Tightening Torque For Bolts

Torque wrench. For the past 40 years, when the oil and gas industry thought of bolt lubricant, it focused on disassembly — i. The operator reads the torque applied to the joint and immediately realizes if tightening is properly terminated. In the case of bolts and nuts, this elastic deformation between the bolt head and the nut is critical in order to create tension or clamping force to hold the joint together. Tighten to 22 ft/lb 2. fastener supplier will provide a specific stretch figure in thousands of an inch that will achieve desired preload clamp with assembly they specify at a particular torque reading. Technically it is based on the applications. Clamp load (lb. Bolt Torque Calculator - Calculate required bolt torque; Improvised Torque Wrench - Improvise a torque wrench with a luggage scale; Metric Bolts - Tightening Torques - Typical maximum recommended thightening torques for metric bolts. Suzuki : Torque Specs. เช็คน๊อตที่จะขันว่า ขนาด m เท่าไร หรือใช้ลูกบล็อกเบอร์อะไร (ยกตัวอย่าง M10) 2. Stage 3 Tighten 90°. You apply a constant force of 30. Transcribed image text: You are tightening the bolts on your favorite table that have become loose over time. Mar 28, 2013 at 8:27 PM #20 #20. 0 X 5 M 1/4" - 28 8. tightening by bolt torque control. 4 ft/lbs (10 Nm) in alphabetical order. The most common bolts to specify tightening via stretch to be the conrod big. Always refer to the manufacturers recommended torque values if possible. the torque to loosen to establish the proper tightening torque spec. Control bolt hardness and dimensons. , no torque wrench). Some bolts are “torque to yield,” meaning they need to be tightened to a certain specification and then to a certain number of degrees to stretch the bolt and obtain the maximum clamping force from it. Around 50 percent of the torque is used to overcome the friction of the working faces of the nut and bolt or, in the case of a head bolt, between the bolt washer face and cylinder head. Torque wrenches tighten fasteners but for many reasons, are less than ideal. 0L, 85 inch-pounds for the 1994 and later 4. Wheels could become loose if not tightened with a torque of 96 lb-ft (130 Nm). 5 N-m would be the lowest value of torque applied to each of the bolts. Tightening a bolt stretches it, while pulling the head and block together. The remaining 90% is lost due various forms of friction that occur during the tightening process. CDI Torque Products is not responsible for any application of torque or it’s consequences as a result of using this chart. Torque to yield bolts as the name suggests torque right to the yield limit. The elastic limit as we know it (also proof load) is approximately 85 to 95% of the tensile strength of the bolt. When deciding on the type of tool to use for attaining the desired clamp load, it is important to consider the engineering specifications. 55 kg wrench as a rod rotating about its end() and the bolt (9. Before covering up the heads I would like to check and tighten the 20 head bolts. Unfortunately there are many factors involved during the tightening process which must be understood in order to achieve a solid bolted joint. Step 3: Additional 90 degrees (or 75-85 FT/LBS) Use tightening sequence as illustrated above. Fastener Size - Torque ft. Control bolt hardness and dimensons. 4,552 Posts. Using a 3 step torque method as follows: Tighten all bolts to 4. The above Table is applicable only for ASTM A320 Grade L7, A193 Grade B7 and A193 Grade B16 Stud Bolts. the special torque tightening sections) Nrn 34 7-9 18-20 30-33 4548 65-70 99-105 kgf m 1 lbfft Components used during manufacture of the vehicle have different thread formations (Metric, UNF. The customer must satisfy themselves with the performance of the fastener and validity of the data. One can find some of the best tools in the market among which one is torque wrench. Torque (lbft) Torque (kgm) Drive shaft coupling U bolts (rubber cross inner joints) 8 to 12: 1. This is because over-tightening a coupling may result in. This work reveals preload is pro-portional to tightening torque minus removal torque and that taking this torque difference subtracts out friction. Most manufacturers recommend torque values of approx. 266 310 912 1064. Then shut it off. Bentley also has the following info for M16 8. When I set torque 11(although spec shows 16 torque, I was little bit worry about snapping the bolts), those 4 bolts keep turning. Tighten to 22 ft/lb 2. Bolt stretch ±1 to ±8: Use bolts with flat, parallel ends. For other items, check product descriptions before you try to tighten a nut so that you know how much torque is required to tighten it. However since the bolt is used to be tightened into a internal thread part or a nut, the bolt receives twisting torque due to friction torque between thread torque during tightening. 5 m6 x 1 20. The following assumes standard ISO or National Standard bolts and threads are used: = where is the required torque. Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. Be aware that certain automatic tightening tools, such as impact wrenches, can result in significant variations occurring in the torque value and the preload of bolts. It is past this limit where clamping force and its tensile strength are eventually lost as well. Traditional British practice has been to hand tighten ordinary bolts using podger spanners. Over torquing any fastener can result in catastrophic failure. 8L (231) Buick, Chevrolet, Oldsmobile, Pontiac 219 lbs 594-002 1996-69 5. Tighten all bolts to 44. And when you use a wrench on a threaded fastener (such as a bolt, nut, screw, or stud), you're. Do all of you torque them down to these exact numbers or do. m (22 lb ft). Manifold first, then the Int. 35-50 ft/lbs. Hence, the torque tightening process is not very efficient. In bolted joints, clamping force is usually generated by applying torque to bolt head or nut. Rocker cover bolts: All. Tightening in Stages. Just stick it on your toolbox, machine or other metal surface close to your workplace!. This is the actual "tightening" action, though in typical bolted joints only about 10% of the torque you're putting in goes to this factor; the. Tension in the fastener depends largely upon the amount of torque, the tightening, and the size of the thread. 3/9-16 lugs require a torque of between 20 and 30 foot-pounds. English Lug Bolts. 25 17 12 26 19 36 27 5/16" - 24 17 13 26 19 37 27 M 8 X 1 18 13 28. Whether you're a mechanic, a machinist, or you work in a fabrication shop, your days are filled with loosening and tightening nuts and bolts. Essential bolt torques are: main bearing cap bolts connecting rod cap bolts cylinder head bolts close. 75 inch-pounds for the 1993 4. See Figure 8. its power and torque. Torque angle gauges are generally used for higher-torque applications like head bolts and studs. (aka: Rocker cover bolts) This is very very small torque, if you exceed this, the tin metal bends, and gasket leaks. Re: TORQUE SPECIFICATIONS-1994-2001 CHEVY S10’s & GMC SONOMA’s First Picture is the tightening sequence for VIN Z 4. Vibration Damper Bolt 60 ft/lbs. If you’re tightening the bolts on your car’s tires, you can refer to the owner’s manual to see the torque that's required to tighten them. 2: GRADES 8, 8. STEP 6: (Torquing the bolt) When tightening bolts, particularly TITANIUM rods, bolts must be torqued to 20% of the total required torque and then in one smooth motion torque the bolt to the final torque spec without stopping. I just did mine yesterday, fitting the blue Fel-Pro Permadry gasket. It is extremely important to realize that this tightening value is valid only so long as all Of the aspects Of the application remain constant. 2:nd = 101 ft/lbs. Bolts are M24 x 130, grade 8. Based on a torque wrench accuracy of 5%, 85. A “clicker” torque wrench will make an audible click once you’ve reached the torque level you’ve set. Condition: Unmetered air leaks or exhaust manifold gasket not sealing. c) Tightening Suspension Mounting Bolts d) Any other NUT OR BOLT with Specified Torque range matching the Torque Range of this wrench. 15 lb ft is the listed torque for Spark Plugs in the 2006-2007-2008 Solstice manuals for both the 2. PRELOAD (TORQUE) RECOMMENDATIONS 12. Invented way back in 1948, they come in all types of. Torque to yield bolts as the name suggests torque right to the yield limit. 4 DIT Engine Torque Specifications Values are in foot pounds, Ft Lbs, Main Crankshaft Bearing Cap Bolts 72 - 80 Flywheel Bolts ( for crankshaft with 6 flywheel bolts and 2 dowel pins ) 57. They usually include engine images, displacement, dimensions and weight, essential bolt tightening torques, plus characteristics of the engine e. K is the coefficient of friction. During tightening the torque you're putting in gets "used" in three ways: Stretching the bolt/compressing the joint via the "ramp" action of the threads. While tightening, or applying torque, to a bolt, the clamping force clamps the parts with a tremendous amount of force that will ideally remain very high and consistent. The outer socket rotates clockwise and tightens the nut to an initial bedding torque. As bikes have become more precise, with more delicate materials, those numbers have become more and more important. Two bolts tightened to the same torque may have widely different clamping force. 9 bolts (metric coarse) bolt diameter x pitch thread stress area mm2 tightening torque nm pre load kn tightening torque nm pre load kn m5 x 0. 7ft lbs is as you make your round tightening the bolts some pressure is taken off the ones you started at as the gasket crushes and more bolts are taking the load (The first ones you did, may loosen up). Description Tightening Torque 1 Connecting rod bolt 14–16 2 Flywheel nut 80–90 3 Crankcase cover bolt 20–23 4 Cylinder cover bolt 28–32 5 Rocker arm shaft bolt 20–23 Wearing Parts Ref. The Bolt Torque & Preload calculator can be used to calculate the torque required to achieve the desired preload on a bolted joint. 25 17 12 26 19 36 27 5/16" - 24 17 13 26 19 37 27 M 8 X 1 18 13 28. The operator reads the torque applied to the joint and immediately realizes if tightening is properly terminated. OTHERWISE, ENGINE HAS CAPSCREWS. Stainless Steel Fasteners - Pre-load and Tightening Torques. Start with the top bolt and tighten one quarter turn, then switch to the bottom bolt. 4 mm The values are for slightly lubricated bolts. This is true for all makes and models. 0 N at 110° from the wrench at its end (15 cm long). Next each may receive an additional 90-degree rotation. Torque; Rocker cover bolts (6x for 599c or 5x for 698cc) - Initial Torque Rocker cover bolts (6x for 599c or 5x for 698cc) - Final Torque: All 450 & 452: 12Nm 9. Cylinder Head Torque & Tightening Spec. km figure is required for calculating first tightening torque value and Vk is required for calculating final tightening torque. Re: Tightening torque for top and bottom rear shock bolts. 266 310 912 1064. 3: M16 x 2: 157: 67: 30. #7 · Jan 26, 2014. You are tightening the bolts on your favorite table that have become loose over time. 50 132 528. Download the relevant PDF document to get instructions and torque settings. Stage 2: tighten short bolts an additional 180 degrees. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. 4 DESCRIPTION N·m Ft. So, when the clamping of a joint is critical, then it is best practice to add additional clamping force (more bolts) or if that isn’t possible, then to study the torque to tighten vs. The following assumes standard ISO or National Standard bolts and threads are used: = where is the required torque. 15 lb ft--Solstice 2. Tighten large bolts (1) again in the number sequence shown to a torque of 435 ± 20 N m (320 ± 15 lb-ft). KenLyns, Mar 28, 2013 #19. Often they specify a second turn of X degrees. If re-laxation is suspected and the part-turn method has been used, the bolts should be replaced and tightened one by one. tightening torque for flywheel bolts to crankshaft. There is no torque difference for fine or coarse threads. Then for the second stage,they should be tightened up 12 -18 Nm in the correct tightening sequence. Over 6,000 Automotive Torque Specs. Specify the correct tightening torque: Whenever feasible, specify the tightening torque. 266 310 912 1064. Applying the appropriate torque to bolts and verifying that the tool that applied the torque was correctly calibrated is essential for structural bolt tightening and for running a safe, effective plant or job site. It is also important to tighten lug nuts or bolts incrementally to the final torque specification and doing so in the proper sequence. Torque Auditing after Assembly: The residual torque should be checked as soon as after tightening operation as possible, in a slow manner in order that dynamic effects on the torque gauge are minimized. 16 for "lubricated" conditions K = 0. If you own a Honda and a Kawasaki keep in mind the torque and torque patterns vary between. Torque values calculated from formula T=KDF, where Lubricated Clamp Load F based on 75% of Yield Dry Clamp Load F based on 40% of Yield to avoid Galling. Bolt torque values range from around 4 to 300 lbf⋅ft (5 to 400 N⋅m), depending on the factors in the above bolt tightening torque calculation formula. The remaining 90% is lost due various forms of friction that occur during the tightening process. 0 kg-m, 22 ft-lb) in numerical sequence. TIGHTENING TORQUES FOR IMPERIAL (U. Bolts, clutch cover 2. Release the power switch and remove the tool, at this point the spline will remain attached, and continue tightening all other bolts in the joint to the bedding torque. Continue tightening to achieve approximately 25% recommended torque. The elastic limit as we know it (also proof load) is approximately 85 to 95% of the tensile strength of the bolt. Load Cell, Torque Sensor, Force Sensor, Pressure Sensor. The VDI 2230 standard assumes equal values for friction coefficients of the thread, the head of the bolt, and the washer. it was up but got deleted, the torque spec is 64 ft-lbs for the bolts. Robotic Bolt Tightening automation can be used to fasten Bolts within assembly processes, tightening to the correct torque with consistent results. 5/8-11 lug bolts should be torqued to between 55 and 70 foot-pounds. But, since I am planning on my next Pan drop and Filter change soon, I figured I would try to do it the "right" way this time around. Screw head in contact with plastic; clamp load generated 3. Pitdad42 , Sep 27, 2015. This is done with a torque wrench. (mm) Typical Maximum. Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. 2 Nm 87~100 in lbs Campagnolo® (3-piece) 32~38 Nm 282~336 in lbs Campagnolo® Ultra-Torque 42 Nm 371 in lbs Race Face® 54 Nm 480 in lbs Shimano® 34~44 Nm. Torque is a measure of rotational or "twisting" force. The endcap that screws over it compresses a face o-ring and seals it when it butts with the flange on the cylinder. เช็คน๊อตที่จะขันว่า ขนาด m เท่าไร หรือใช้ลูกบล็อกเบอร์อะไร (ยกตัวอย่าง M10) 2. However, only about 10% of the torque applied is transferred into clamping force. 35 N-m (26 lb ft) Turbocharger Stud [4x] 10 N-m (89 lb in) Reusable Threaded Fastener Tightening Specifications. Whether you're a mechanic, a machinist, or you work in a fabrication shop, your days are filled with loosening and tightening nuts and bolts. For instance, we first tighten the bolts to a torque of 35 foot-pounds. A properly tightened bolt has its material stretched slightly, but not beyond its elastic limit. Wheels could become loose if not tightened with a torque of 96 lb-ft (130 Nm). Clutch (1997 - 2006) If you choose to replace your Wrangler’s clutch yourself you will need these specs along with those of the transfer case, transmission, and belly pan. 10 Results in: *When μ = 0. Bolt Torque Spec Chart for Ford 260, 289, 302 Fastener Type Torque Spec Main cap bolts 60-70 ft. Since a torque wrench senses friction, there are a lot of variables that can, affect proper tightening. 16 for "lubricated" conditions K = 0. In order to tighten bolts, a degree of bolt preload scatter is to be expected. This time, with perfection, all 5-wheel bolts were tightened surprisingly-lightly, but correctly, to 120Nm. The screws holding the rotors in place I never use a torque wrench setting for. So, they may well be on too tight. So, the expansion rate of aluminum heads will stretch typical bolts; past their yield point and can snap them. This wrench has special springs that do not permit over-tightening of bolts. Tighten large bolts (1) again in the number sequence shown to a torque of 435 ± 20 N m (320 ± 15 lb-ft). 5 N·m (40 in. I thought I read a thread here earlier to make sure and sequence the tightening of the bolts and torque to specs as well to prevent warping the. ) PLUS 1/4 turn in sequence shown. Some of the sockets had the top cut off and a short pipe welded between the top and bottom pieces to get a socket deep enough for some of the keel bolts. Bolt Diameter x Pitch Thread Stress Area mm 2 *When μ = 0. Tightening Torque Tightening Torque Tightening Torque Tightening Torque The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Fastener Torque Specs. I used the "seems about right" spec when I tightened them up. fastener supplier will provide a specific stretch figure in thousands of an inch that will achieve desired preload clamp with assembly they specify at a particular torque reading. Do all of you torque them down to these exact numbers or do. The user assumes all responsibility for the use of this material. I'm prepping to do a pad and rotor change this afternoon and I'm looking for the caliper bracket bolts torque specs. 16 for "lubricated" conditions K = 0. tightening torque for class 12. I have a FSA SLK carbon crank and would like to replace the chainrings. Tightening Torque of Main Bolts and Nuts (N. Have someone put a breaker bar on the damper and hold it while you torque the back, or put the bar on the front, turn the engine to wedge it against the frame or whatever, and torque the rear. Bolt Torque Spec Chart for Ford Engines These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Its fairly common to find aftermarket (and some OE) bolts to require tightening via stretch, or give specs for both. g Hyundai Grand i10 Wheels : 65~79 lb-Ft, Nm 88~107) b) Tightening Brake Calliper Carrier Bolts which is recommended when changing Brake Disc. However, only about 10% of the torque applied is transferred into clamping force. m (22 lb ft). In this case, the cylinder head gasket can be reused. Posted: Apr 6, 2012 at 4:27. Based on my previous posts you may familiar with grades of bolt, torque of bolt, torque calculations and slip factors. The long bolts that go into the engine block will have a different torque values then the short ones that thread into the cover. It is the task can be rightly done by experienced operators only. The tightening torques below are for imperial US bolts with tension approximately 70% of yield strength. Valve Cover Bolts (centerbolt and perimeter bolt designs) 4 ft/lbs. 35-40 foot pounds. Merida's Adjustable Torque Wrench is the perfect tool for quick and easy bolt tightening. Install Exh. The reason for it is, to get a more consistent stretch in the bolts. And as far as i can find out the head bolts (RIBE M12) is supposed to be tightend i 4 steps 20Nm, 40Nm, 90degrees and 90 degrees, but im wondering if that is correct. Torque coeffi cient and friction coeffi cient Note: The values in this table are for standard screw joints. 3,364 Posts. Tighten all bolts to the specified torque (see chart below for specifications). Many modern engines use Torque-To-Yield (TTY) bolts, which can't be reused. 55 kg wrench as a rod rotating about its end() and the bolt (9. Im replacing the head on my 1. Critical fasteners—cylinder-head bolts are the poster child here­—are so difficult to properly tighten that not only does the manufacturer specify torque-plus-angle tightening, the bolt is a. Over tightening these bolts can damage the timing cover and the gaskets or composite seals. Repeat tightening each bolt one quarter turn, then alternating to the other bolt, until both bolts are torqued to 25 Nm. In the same manner as Step a) again, tighten them to 105 N. casting) and attach the bracket to the cylinder head and. Torque angle gauges are generally used for higher-torque applications like head bolts and studs. You apply a constant force of 30. " It shows how your torque value will change with different k-factor values at 1-ksi (root area) bolt load. The values are just smaller. lbs) – SUPER TIGHT!!! Get someone on the bike to weigh it, jam the rear brake, keep gear in Neutral (do NOT put into gear), and unfasten the nut. As bikes have become more precise, with more delicate materials, those numbers have become more and more important. ) max For loosening and tightening - drive pinion nut in conjunction with 32 mm socket VW 162,. The torque-angle tightening method is known to give a consistently high preload but does involve more care and consideration on the tightening process With the torque-angle tightening method an initial tightening torque is specified that is typically about 50% of the torque that would induce yield into the thread. However since the bolt is used to be tightened into a internal thread part or a nut, the bolt receives twisting torque due to friction torque between thread torque during tightening. These bolts elastically deform and return to their original dimensions when loosened. Loosen all bolts 180° in the reverse order of installing and loosen them an additional 180°. You are tightening the bolts on your favorite table that have become loose over time. Install main bearing bedplate to engine block bolts (11-20), and torque each bolt to 28 Nm (20 ft. tightening method was assessed. Tightening Torque Not to be used for structural fasteners or structural applications. 9 dohc cylinder head torque specs and sequence Cylinder head bolt tightening procedure: CYLINDER HEAD BOLT TIGHTENING. 1 kgf-m, 22. 2) Tighten cylinder head bolts. Bolting torque to develop 50% Bolt Yield Stress at Nut Factor, K=0. Recommended Torque Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass Grade 2, 5, and 8 values are for plated bolts. know how to use it properly … comes with experience or just Google it or you tube. 90 SEDAN / BASE/S 1988 – 1995 90 ft-lbs. Bolt Torque Spec Chart for Ford 260, 289, 302 Fastener Type Torque Spec Main cap bolts 60-70 ft. TTY bolts typically have an angle tightening specification rather than a specific torque value (which requires using an angle gauge when tightening the bolts). Removing the bolts while the engine is hot can cause cylinder head warpage. I know it is bad explain but it is like bolts not grab by a housing. It is estimated that only about 10% of the tightening torque actually results in useful bolt tensioning. Tighten all bolts again to the specified torque. 1 - 6 of 6 Posts. Camshaft cover, bolts. The general mechanic would assume that bolts are to the tightened via torque alone, or torque plus angle. The Powermaster Bolt Tightening software in many cases would recommend a preferred bolt stress based on bolt loads specified in the different bolt flange specifications. 6 and M 16 (course threads) are shown in table 4 of BSENISO 3506-1:1997. No, absolutely not. You apply a constant force of 30. Suggested Maximum Torque Values for Screws and Bolts. The wrench is set to a torque value in accordance with the table below. 15 lb ft--Solstice 2. There are specific tightening sequences depending on what lug nut/bolt pattern you have – 4, 5, 6 or more… The below example shows the 3 typical bolt patterns and tightening sequences for most automotive applications. / ( n-m) axle spindle nut: dakota: 190 (258) lh body: 70-90 ( 95-122) all others: 180 (244) ball joint clamp bolt. First round - 30% of final torque (flange sequential order) Second round- 60% of final torque (flange sequential order) Third round - 100% of final torque (flange sequential order). The mice had the chewed the insulation of the wires for 2 of the sensors. Calculating Tightening Torque Tightening Torque A common question asked is for the recommended tightening torques of a bolt. Video Transcript. So, the expansion rate of aluminum heads will stretch typical bolts; past their yield point and can snap them. If you approximate the 0. I am testing a perforated hollow cylinder with M48x2 bolt size on one end. They usually include engine images, displacement, dimensions and weight, essential bolt tightening torques, plus characteristics of the engine e. The torque procedure for tightening a TTY head bolt involves tightening it until a certain torque reading is reached. 8 bolts of sizes M24 and M30. Subscribe To Our YouTube Channels:COMP Cams http://www. It is past this limit where clamping force and its tensile strength are eventually lost as well. What are the torque specs for bolting the torque converter to the flex plate? Will has the answer. Then when tightening my brand new from LC engineering bolts for the pressure place to 14ft/lbs, one broke off in the hole. Valve cover bolts into header? VC bolts torque to 60 in-lbs (5 lb-fts). 0 N at 110° from the wrench at its end (15 cm long). In the case of multiple fasteners on one part, it is also to prevent warping. 8 grade: 200 Nm torque which seems excessive for aluminum threads. 14 ft/lb (30. torque the cylinder head bolts. TIGHTENING TORQUE MAGNETIC CHART FOR SAE & METRIC BOLTS + WRENCH INTERCHANGE CHART is a real time and money saver. Along with our general purpose tensioners and torque wrenches we also offer many industry specific bolt tightening tools and solutions. Tightening torque values are not given in this standard. Torque specifications are shown either as an exact figure, or a specific range. The torque spec was listed as 80 ft lb in the service manual. 10 Results in: *When μ = 0. (a) bolts and nuts are new, standard finish, uncoated and not lubricated* (b) the load will be 90% of the bolt yield strength (c) the coefficient of friction (µ) is 0. If torque is specified, it may be possible to use tensioning, if accessible. Controlled bolting techniques. The long bolts that go into the engine block will have a different torque values then the short ones that thread into the cover. In “Manual Mode” the user enters the information such as bolt diameter, clamp length & bolt load and the. Remove the. When deciding on the type of tool to use for attaining the desired clamp load, it is important to consider the engineering specifications. As per bolt tightening methods or guidelines, cross tightening sequence is followed. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation. 9 for bolts and screws and with property classes 8 to 12 for nuts, to check their tightening performance in the elastic range. 16v Camshaft Carrier Cap bolts. Specify the correct tightening torque: Whenever feasible, specify the tightening torque. In the same manner as Step a) again, tighten them to 105 N. ) max For loosening and tightening - drive pinion nut in conjunction with 32 mm socket VW 162,. RE: Tightening Anchor Bolts with torque wrench. This can damage components, such as a crank ridden with a loose mounting bolt. (2) Tighten all bolts to 22 ft-lb in alphabetical sequence. The cylinder head tightening sequence is a five step process. 2 79 m12 x 1. the torque to loosen to establish the proper tightening torque spec. Pan bolts, timing cover bolts and valve cover bolts are examples of non-critical fasteners having no detailed fastening procedures. Torque specifications are shown either as an exact figure, or a specific range. Torque in 3 steps to 65 ft/lbs. 3L Intake Manifold Bolts 1994-1995 Second Picture is for 1996 & Newer-Intake Manifold Tightening Sequence **Third picture is for the tightening sequence of Cylinder head bolts on 1996+Newer models. Often they specify a second turn of X degrees. Technically it is based on the applications. Re: Tightening torque for top and bottom rear shock bolts. I just tighten the oil pan bolts until just a smidge after they snugged up. Here are the torque specs you asked for but please get the manual before you take the torque wrench to the head bolts. Over torquing any fastener can result in catastrophic failure. Critical fasteners. The Bolt Torque Formula The formula that expresses the relationship between the load in a bolt and applied torque is: T = K F d K is the coefficient of friction. Extreme caution should be used when using a formula for torque/tension relationships. Joints that are significantly less stiff than the bolts, such as joints involving gaskets, suffer much worse from crosstalk. Torque is a measure of rotational or "twisting" force. Then when tightening my brand new from LC engineering bolts for the pressure place to 14ft/lbs, one broke off in the hole. 5 N·m (40 in. Instructions for Mounting Wheel Bolts. Set bolt heads firmly into the edge countersink using a heavy hammer. Often they specify a second turn of X degrees. Continue with the 2,3 and 4 bolts, tightening them to 9 foot-pounds as well. Have someone put a breaker bar on the damper and hold it while you torque the back, or put the bar on the front, turn the engine to wedge it against the frame or whatever, and torque the rear. And 36 Inch Pounds is hardly anything, having torqued 20 amp QOB's to spec I can tell you 99. ) Bolts, clutch cover 4. While tightening, or applying torque, to a bolt, the clamping force clamps the parts with a tremendous amount of force that will ideally remain very high and consistent. Torque to yield bolts as the name suggests torque right to the yield limit. Fastener Size - Torque ft. Tighten all bolts to 22. 7L (350) Chevrolet, GMC Truck 75 lbs. The torque values are approved for spiral wound graphite and PTFE filled gaskets, graphite. I am testing a perforated hollow cylinder with M48x2 bolt size on one end. I used the "seems about right" spec when I tightened them up. The only way to get it right is with the best bike torque wrench. by Duane Ausherman: A philosophy of torque on a BMW motorcycle. 10 Results in: *When μ = 0. 35-40 foot pounds. Created Date: 9/8/2006 11:12:23 AM. TIGHTENING WITH CONTROLLED TORQUE Using a tool (electronic torque wrench or screwdriver with torque control) which measures the torque is a first step towards a correct and "certified" tightening operation. It is past this limit where clamping force and its tensile strength are eventually lost as well. 35-50 ft/lbs. 66: Drive shaft nut (front hub, drum brakes). 28(17:16:23) 2019. Start with the top bolt and tighten one quarter turn, then switch to the bottom bolt. Tighten plastic insert or crimped steel-type lock nuts to approximately 50 percent of the dry torque shown in the chart, applied to the nut, no to the bolt head. This is the most widely used method. In the early 20th century,. 4-6 Bolt Tightening Reliability and Bolts Bolt tightening reliability and bolts 62 4-7 Construction of a Tightening Reliability System Construction of a tightening reliability system 63 4-8 Shifting from Torque Control to Tightening Assurance System (1) Tohnichi tightening assurance system 64 (2) System configuration examples 66 4. DO NOT torque all the bolts to 25-30 ft. Get detailed information on the 2012 Toyota Prius including specifications and data that includes dimensions, engine specs, warranty, standard features, options, and more. 55 kg wrench as a rod rotating about its end() and the bolt (9. Please be careful and let's stop the insanity of snapping caliper bolts and stripping caliper threads. 8L (231) Buick, Chevrolet, Oldsmobile, Pontiac 219 lbs 594-002 1996-69 5. Nutting Bolting Renewing And Creating Luck Ienatsch Tuesday Cycle World. Have someone put a breaker bar on the damper and hold it while you torque the back, or put the bar on the front, turn the engine to wedge it against the frame or whatever, and torque the rear. following the torque sequence in the image below then repeat the sequence and then torque them to 25-30 ft. First with stretch bolts automated engine assembly is much easier as the tightening of the bolt can vary by as much as 1/2 turn in most cases and provide the same clamp force. Tightening torque Values for Metric Coarse Bolts Tightening Torque Values for Metric Fine bolts Tensile Strength Comparison Chart – Steel & Alloy Bolts Torque Conversion Chart, psi to MPA & MPa to psi Conversion Chart. As bikes have become more precise, with more delicate materials, those numbers have become more and more important. , then 60 ft. Tightening torque values are calculated from the formula T = KDP, where T = tightening torque, lb-in. The user assumes all responsibility for the use of this material. #8 - 14 in. To avoid the risk of over tightening, or in special applications with very big screws, it is preferable to use the loosen-tighten method: Loosening the coupling a few degrees (for example 10, but depends on the characteristic torque / angle of the joint), and detecting the torque to screw it back to the original position. If bolts are to be torqued "dry", increase wrench setting by 20%. 0 N at 110° from the wrench at its end (15 cm long). Torque values calculated from formula T=KDF, where Lubricated Clamp Load F based on 75% of Yield Dry Clamp Load F based on 40% of Yield to avoid Galling. Dear Readers,Wish You a Happy Durga Pooja. Head Bolts and Studs. Plain: 1⁄4: 20. Install and tighten the bolts as follows: 3114 Cylinder Head Tightening Sequence 3116 & 3126 Cylinder Head Tightening Sequence a. Tightening Torque Tightening Torque Tightening Torque Tightening Torque The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Repeat tightening each bolt one quarter turn, then alternating to the other bolt, until both bolts are torqued to 25 Nm. This instrument allows fasteners to be tightened to the proper tension, helping avoid damage from over tightening or joints coming apart from under tightening. , and finally 90 ft. Critical fasteners can be identified because the repair procedure for the engine details exact tightening information. 31,571 Posts. Torque use tightening sequence starting at center 4 bolts working your way to the outer bolts, and repeat sequence. The torque-up method relies on friction between nut and bolt threads to produce the reaction to the tightening torque. 50 103 371 M20 2. The only way to get it right is with the best bike torque wrench. Torque to yield bolts and angle tightening are reasonably new developments in engine rebuilding - but how do they work, and why have they moved to this style. DO NOT torque all the bolts to 25-30 ft. A tight, compound joint of engine block, cylinder-head gasket, cylinder head, and head bolts. 4,552 Posts. Too much torque can break the bolt. Tightening torque-to-yield bolts is done in several stages using a combination of torque and turning angle. From there we rotate each bolt, a specified degree. Camshaft Non - Oiled Sprocket Bolt 122 90 — Bearing Cap Bolts 11 — 100 Timing Chain Cover—Bolts 54 40 — Connecting Rod Cap—Bolts 27 20 — PLUS 90° TURN Bed Plate—Bolts Refer to Procedure Crankshaft Damper—Bolt 175 130 — Cylinder Head—Bolts M11 Bolts 81 60 — M8 Bolts 26 19 — 9. Fasteners - Bolts, nuts and threaded rods - torque, tension and loads; Related Documents. Depending on what bolt I'm tightening, I'm moving my hand up the handle on the wrench to get less torque. Torquing -Tightening flanged joints in which torsional loads are applied to the bolts causing the bolt to stretch, due to the relative movement between the nut threads. Proper torqueing is vital to the function of the bolt and is determined by several, often conflicting factors. Threaded fasteners in an engine can be divided into two general categories: critical and non-critical. Essential bolt torques are: main bearing cap bolts, connecting rod cap bolts, cylinder head bolts. Bolts are tightened in order to achieve tension – torque is only a by-product of this relationship to reach proper tension. The second method, (gasketed), uses a low gasket seating bolt torque, applied to a soft elastomeric gasket, for lower pressure applications (like landfill gas collection or use with torque-limited PVC or fiberglass flanges), followed by the mandatory re-torque 4 hours to 24-hours after the initial torque. Properly tightening head bolts to a. Bolt Torque Spec Chart for Ford 260, 289, 302 Fastener Type Torque Spec Main cap bolts 60-70 ft. Clamp loads estimated as 75% of proof load for specified bolts. In principle, in order to minimise stresses, you need to pull the cylinder head evenly down onto the block. All other torque values are in foot-pounds. TIGHTENING TORQUE MAGNETIC CHART FOR SAE & METRIC BOLTS + WRENCH INTERCHANGE CHART is a real time and money saver. Not much you can do besides tightening them periodically, unless you go with LH threaded bolts. The operator of the torque wrench sets the specification of the pressure prior to tightening a bolt. 2 SCOPE This procedure is applicable to all flanged connections in piping systems and connections to equipment regardless of sizes and classes identified and required tightening by bolt torque /. A calibrated torque tool should therefore be used for the final tightening operation or inspection. Over-tightening, misalignment, or uneven tightening can break brittle material flanges. It is the responsibility of the user to verify the accuracy of this material before use. 14 Results in: Tightening Torque Nm Pre-load kN Tightening Torque Nm. Example - Required torque for tightening a Imperial bolt. Install Exh. So, the expansion rate of aluminum heads will stretch typical bolts; past their yield point and can snap them. 35 – 44: Valve Cover 16v ( more forgiving this cover, but the 6mm bolts must never be over this number! or they will snap. PISTONS WITH RINGS AND PIN 11 25 530 REMOVING AND INSTALLING/REPLACING ALL PISTONS (N62) Special tools required: 00 9 120 11 8 141 11 8 151 11 8 152 11 9 500 (engine removed) 2005 BMW 745i. I know the torque for the primary clutch bolt is 96 foot pounds (Todd mentioned that in the videos). 4L-207ci-V6 Engine Torque Specs. Rocker cover breather channel plate bolts (2x) - Final Torque. Applying a wrenching torque to the head of the fastener generates the initial tightening torque on the bolt. from failing when tightening. 2014 JEEP Grand Cherokee with 3. 1 174 M16 2. Remove two bolts from the rear fuel injection side of the cylinder head. Then the bolt is given an additional turn to a specified angle to load the bolt beyond its yield point for maximum clamping pressure. The values are just smaller. Torque for HT / HSFG Bolts. Torque tightening is the accurate application of torque to a nut so that a bolt can hold its load securely without breaking. Crankshaft pulley to vibration damper bolts. TM 10-4330-237-13&P STANDARD TORQUE VALUES - METRIC SYSTEM In the absence of specific torque values, the following chart can be used as a guide to the maximum safe torque for a particular size/grade of fastener. Install main bearing bedplate to engine block bolts (11-20), and torque each bolt to 28 Nm (20 ft. 4 bolt Flange. If you need new wrenches, heads, or testing systems, then we can. a warm engine. Exceptions are given in other sections of the service Manual where needed. Here is the reason why: When you torque a fastener, the male threaded portion elongates and the female threads compress. Repeat tightening each bolt one quarter turn, then alternating to the other bolt, until both bolts are torqued to 25 Nm. I know a relation Torque= 0. Continue tightening until next split pin slot aligns. Connecting rod cap bolts: Stage 1 Pause for 2 sec. Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. Recommended Torque Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass Grade 2, 5, and 8 values are for plated bolts. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). The above Table is applicable only for ASTM A320 Grade L7, A193 Grade B7 and A193 Grade B16 Stud Bolts. accordance with the APS Flange Sequence Procedure. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation. ** Torque values for 1/4" and. K=torque-friction coefficient; D = nominal bolt diameter. They measure the torque applied to the fastener as the wrench tightens the bolt. Tightening the pan bolts is the most common advice given. 4 DIT Engine Torque Specifications Values are in foot pounds, Ft Lbs, Main Crankshaft Bearing Cap Bolts 72 - 80 Flywheel Bolts ( for crankshaft with 6 flywheel bolts and 2 dowel pins ) 57. scocar Prebunking. In the same manner as Step a), tighten them to 53 N. Using the same alternating pattern re-toque the bolts (you will find most bolts were out of torque due to the compression of the backing. Most manufacturers recommend torque values of approx. Main: 103 ft/lbs. When you tighten one of these bolts, the torque setting that is used is designed to get the bolt close to the point that it starts to stretch. * Tightening Torque (in-lbs through M8; M10 & over ft-lbs) METRIC FASTENERS Nominal Size or Basic Screw Dia. Fully tighten, 8Nm (6 ft-lb) (10mm socket 3/8" / 3/8" torque wrench & extension). #21 · Aug 4, 2017 (Edited) The original fasteners on Alfas are superb quality. from failing when tightening. Minimum breaking torque (M b,min) for austenitic grade bolts and screws between M 1. The elastic limit as we know it (also proof load) is approximately 85 to 95% of the tensile strength of the bolt. The values are just smaller. following. Torque Values Stainless Steel Bolt Table Chart. agradecere la orientacion que puedan darme. japonica, tightening torque and thread torque follow the profile of clamp force: first rising, then falling after reaching a peak value. Every manual for every modern bike has lists of torque values for how tight each of its bolts needs to be. 4 and 8 Bolt flanges. Below is a list of the recommended. 3,364 Posts. 9 TORC - Offering Manual Torque Wrench, For Tightening And Loosening Bolts, Warranty: 1 Year at Rs 2370/piece in Mumbai, Maharashtra. 52 N-m (38 ft. FORD/MAZDA WL/WLT - 1005 1024, 1105 1077. Stainless Steel Fasteners - Pre-load and Tightening Torques. Quick View. Front caliper bolts are 16. 1 - 6 of 6 Posts. ^ 200 IN LBS FOR ENGINES WITH 5/16″ BOLTS. the components involved. Number of Bolt / Stud. The bolt material, most commonly steel, resists this natural stretching and creates a clamping force upon the assembled substrates. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation. Did same on all the nuts. Like Goldilocks, we want torque that’s just right. Disclaimer: The following information is intended for reference material only. Bolts and Tightening There is a lot of confusion amongst bolt suppliers and those using them as to what the different grades mean. at least two bolts that would accept additional tightening. TORQUE SPECIFICATION. The tightening torque required to achieve the desired tension is the actual tightening torque that should be used for that given application. This website covers technical aspects of the original ASTM A325 specification which was withdrawn by ASTM international in 2016 and replaced by ASTM F3125. This torque stick advertises limiting torque to 100lb-ft, before purchasing I knew the actual end torque would be about 10-15lb lower and that my car needs 88lb-ft torque on my wheel nuts. Over 6,000 Automotive Torque Specs. calculating the suggested tightening torque is the same for machine screws as it is for bolts. from failing when tightening. 5/16" -18 3/8"-16 1/2"- 13 5/8"-11 3/4"-10 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 0 SAE Grade 2 Bolts SAE Grade 5 Bolts SAE Grade 73 SAE Grade 84 Tensile Size Bolt Stress Tensile Proof Clamp2 Tensile Proof Clamp2 Clamp2 2. Have someone put a breaker bar on the damper and hold it while you torque the back, or put the bar on the front, turn the engine to wedge it against the frame or whatever, and torque the rear. It is extremely important to realize that this tightening value is valid only so long as all Of the aspects Of the application remain constant. Torque on the side that’s likely to produce the least friction. All other torque. ARP offer two different options for the 1. Critical fasteners. Remarkably, a simple ratio, with an added K factor, also applies to the torque required to tighten bolted joints. If you approximate the 0. Tighten all bolts to 22. I seem to remember a specific paste type product for torqueing bolts used by engine assemblers. I usually just use blue loctite and a few good "umphs" and haven't had any issues. The only way to get it right is with the best bike torque wrench. Bolt Diameter x Pitch Thread Stress Area mm 2 *When μ = 0. This method employs a hydraulic ram placed over the nut and a threaded puller which attaches to the ram. to achieve a particular target preload. ) Tightening Torque min max min max min max min max. วิธีการเช็คค่า Torque จากน็อตที่ใช้ ง่ายๆ 3 ขั้นตอน. A torque to yield or TTY are one time use A rust damage this mostly happens to fasteners that are exposed to the weather likes the outer cylinder head off most domestic V8 engines A upgraded performance , higher compression and turbo charging or super charging causes increased stress on all engine fasteners most of all the cylinder head bolts. The screws holding the rotors in place I never use a torque wrench setting for. Enerpac DSX Torque Wrench. * SAE J429 grade 5 bolts do not exceed 1-1/2" diameter. Chapter Bolt Tightening C 2-3 Torque Coeffi cient (1) Formula of torque coeffi cient (2) The torque coeffi cient is not stable d is the nominal screw diameter [mm] Table 2-2. Transcribed image text: You are tightening the bolts on your favorite table that have become loose over time. " In AvE's test, it takes around 10 percent less torque to loosen a bolt than what was put into tightening it. The number of run-downs needed to determine a torque specification varies. Often, the bolts are tightened again to a slightly higher torque as a second stage. Explore EvoTorque. Start with the top bolt and tighten one quarter turn, then switch to the bottom bolt. Torque spec for front Brembo caliper mounting bolts is 80 ft/lbs. 8 zinc plated finish bolts. the breakout torque seen at the bolt head or at the nut of the fastener. 75 in) (1/12 ft/in) (1 - (0%) / (100%)). TM 5-4310-386-14 Table F-2. Pre-load in a bolt is an axial force that creates tension. Torque wrench definition is - a wrench that measures and indicates the amount of turning and twisting force applied in tightening a nut or bolt. Tighten all bolts to 9. Clutch (1997 - 2006) If you choose to replace your Wrangler’s clutch yourself you will need these specs along with those of the transfer case, transmission, and belly pan. Proper Tightening of Nuts and Bolts: Why Is This Important? February 14, 2018. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation. Atlanta Rod and Manufacturing's Torque charts for bolts Tightening Torque (ft lbs) Galv. Remove the. You can run the car up onto wood planks for more crawl space. I used the "seems about right" spec when I tightened them up. Traditional British practice has been to hand tighten ordinary bolts using podger spanners. Its fairly common to find aftermarket (and some OE) bolts to require tightening via stretch, or give specs for both. m (22 lb ft). 3), tightening of non-preloaded bolts shall be conducted as follow:. ** IF SPEC NUMBER BEGINS WITH 95, USE THE LOWER VALUE. Cylinder Head Bolt Torque Sequence. 4 93 m12 x 1. U bolts that have been torqued to a set preload are recommended to be re-torqued after a short time to take-up the stretch in the set of the material. I torqued the caliper sliding pin to 25 ft-lb. See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data. M30 torque 60 Nm settling time 20 min. Some bolts are “torque to yield,” meaning they need to be tightened to a certain specification and then to a certain number of degrees to stretch the bolt and obtain the maximum clamping force from it. Instructions. TIGHTENING TORQUE MAGNETIC CHART FOR SAE & METRIC BOLTS + WRENCH INTERCHANGE CHART is a real time and money saver. Example - Required torque for tightening a Imperial bolt The required bolt clamping force for a joint is 20000 lbs. We use a "torque wrench" when applying force to rotate bolts and such.