A few pounds difference one way or the other may be enough to cancel out the pull. Any or all of the following conditions can aggravate an existing torque steer problem as well as cause it to appear in a FWD vehicle that previously didn't experience torque steer: Unequal front tire inflation pressure side to side. Control arm bushings that are too soft and allow too much movement under load, Excessive front wheel offset (deep dish aftermarket wheels). A short intermediate shaft is plugged into the long side of the transaxle, with a support bearing at the outboard end to hold it steady. A shortened right side driveshaft, which is equal in length to the left side driveshaft, is then connected to the intermediate shaft to complete the driveline. Thus the direction of torque steer in a vehicle with a left mounted transaxle is usually towards the right. . If the vehicle then showed a tendency to drift or pull to one side while driving at normal speeds, a tire or alignment problem would be the cause. Under light loads, the difference is insignificant. Engine torque also loads the control arm bushings and causes the front wheels to change toe alignment under hard acceleration. Lowering the front end, in this case, changed wheel geometry enough to lessen the effects of torque steer. . But under hard acceleration, the wheel with the shorter shaft gets more torque, causing that wheel to pull harder than the other wheel. And double-check tire inflation pressures just to be safe. Dec 29, 2013 | Dodge Cars & Trucks. If the front wheels are also aimed straight ahead, the car goes straight. In theory, the intermediate shaft becomes an extension of the transaxle itself because the shaft is rigidly mounted and does not change angles with motions of the suspension. I've done some digging and I've seen everywhere from 80 ft/lbs to like 250 ft/lbs. . This means the position of the differential gears is also off-center, which requires unequal length driveshafts. . Toe-out is a necessary function built into all steering systems to compensate for the fact that the inner and outer wheels follow different arcs of travel when turning. Its causes are complex but it can be cured. Chrysler issued on of the first technical service bulletins on the subject way back in 1981 (bulletin #17-03-80). Toe misalignment (both static toe or toe-out when steering). If you are planning on installing a wheel on your vehicle, it is important to be aware of the manufacturer recommended torque settings. The thing that causes torque steer is the fact that the front wheels, which do the steering, are now also doing the driving. 8mm bolt = 17 ft lbs. It means torque steer is an inherent though undesirable characteristic of front-wheel drive. Increased engine torque (hopping up the engine in a FWD car that already has a torque steer problem will make torque steer worse). It's also next to impossible to maintain much steering control over wheels that are slipping. Here's what it said: "A slight amount of vehicle lead to the right on heavy acceleration from a standing start, most noticeable with manual transmission and manual steering, is the result of a torque steer condition. Check Pages 1 - 24 of FWD, RWD & 4 W/D front axle nut torque specifications in the flip PDF version. The stronger wheel tends to pull ahead of the other wheel, which creates the induced steering pull towards the opposite side. . side with the shortest axle (if axles are unqeual in length) will often change toe more than the one with the longer shaft, causing the vehicle to pull. The first order of business when a torque steer problem is encountered is to check front tire pressures for equal inflation, and to check for steering play. With equal length driveshafts, a car may pull either right or left during hard acceleration depending on other factors that affect driveline geometry and traction. Before you install your wheels, check your vehicle’s recommended torque. Before you install your wheels, check your vehicle’s recommended torque. If the ride height was greater than seven inches, then the cure was to lower the front suspension by replacing the front springs. The problem of maintaining steering control can be further aggravated by the fact that the front wheels toe-out when steered. Some torque steer is normal on front-wheel drive vehicles.". With front wheel drive, the dynamics are entirely different. Chrysler's suggested cure, in this instance, was to check the front suspension height by measuring from the center of the lower control arm pivot bolt to the floor. Your browser will redirect to your requested content shortly. Example: 6mm bolt = 7 ft lbs. The driver can't countersteer because the wheels have already lost traction. Lug Nut Torque Chart; Lug Nut Torque Chart. towards the right. In a rear-wheel drive chassis, the driving force generated at the rear axle pushes through the center of the car along an imaginary line called the thrust line. Tue Aug 16, 2011 10:59 am. Four wheel alignment is highly recommended because misalignment of the rear axle will prevent the rear wheels from tracking properly. Re: axle nut torque spec? 1 Answer Specs for Mazda 6. That's why some vehicles have shims under the right motor mount. towards the right. ))). The factory "fix" for an offset transaxle, therefore, has been to divide the longer shaft into two parts. An earlier Chrysler FWD car with unequal length driveshafts could be retrofitted with a late model transaxle or equal length driveshafts to cure a torque steer problem, but it would be an expensive retrofit. But it works against front-wheel drive during hard acceleration because it encourages torque steer. Under normal driving conditions and moderate acceleration, torque steer is rarely noticeable, unless a vehicle also has unequally inflated tires or an alignment problem, or there is excessive compliance (flex) in the control arm bushings. if not CRX then 1300 carbureted: D15A3: 1500 fuel injected: D15B1: 1.5 liter DPFI: D15B2: 1.5 liter DPFI: D15B6: 1.5 liter MPFI: D16A6: 1.6l SOHC PGM-FI with catalytic converter So like a team of horses pulling a wagon, the wagon goes which ever way you aim the horses. Wheel Torque Chart. This completely changes the thrust geometry and how it acts upon the chassis. Tue Aug 16, 2011 5:23 pm . Be sure to realign the wheels afterwards. . To diagnose the condition, the technician was advised to test drive the vehicle on a level road to rule out road crown as a cause of the steering pull. Unequal camber (the car will pull towards the side with the greatest amount of positive camber). Using the manufacturer recommended torque also helps guarantee that there isn’t either too much or too little pressure on any of the assemblies to which the wheel attaches. The front wheels should be adjusted as closely as possible to the factory preferred settings with equal camber and caster side-to-side. 12mm bolt = 59 ft lbs. Rear axle nut is 57 ft lbs minimum. They recommend a general torque guide for other body bolts etc. Wheel spin isn't a problem with your typical under-powered FWD passenger car, but it can be a problem with higher powered or turbocharged engines in FWD cars. The torque for the axle nut is 185 ft. lbs. Bolt - Lower triangle lever bearing pin housing Bolt - Caliper to stub axle - Front Cars prior to Car Serial Number 1800 . Re: axle nut torque spec? )), +((!++(!!)+!!+!!+!!+!!+!!+!!+!!+)+(!++(!!)+!!+!!)+(+!!)+(!+-(!!))+(!++(!!)+!!+!!+!!+!!+!!+!!)+(!++(!!)+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!)+(+!!))/+((!++(!!)+!!+)+(!++(!!)+!!+!!)+(!++(!!)+!!+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!+!!)+(!++(!!)+!!+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!)+(!++(!!)+!! Not so with a bicycle. This, in turn, may cause the driver to countersteer slightly (an off center steering wheel) which causes the front wheels to toe out -- and you know the rest. Somewhere along the way, engineers discovered that switching to equal length driveshafts helped even out the torque loads, which in turn reduced the tendency to torque steer. Back to Front Wheel Drive | Back to Info Main Page, High Quality Online manuals, fast download. Cars after and including Car Serial Number 1800 Bolt - Caliper to stub axle - … .. Bolt - Lower triangle levers . Safe, in this case, meaning both what the transaxle and typical driver are capable of handling. +((!++(!!)+!!+!!+!!+!!+!!+!!+)+(!++(!!)+!!)+(!++(!!)+!!+!!+!!+!!+!!+!!)+(!+-(!!))+(!++(!!)+!!+!!)+(+!!)+(!++(!!)+!!+!!+!!+!!)+(!++(!!)+!!+!!)+(!++(!!)+!!+!!+!!+!!+!!))/+((!++(!!)+!!+!!+)+(!++(!!)+!!)+(!++(!!)+!!+!!+!!+!!)+(!++(!!)+!!)+(!+-(!!))+(!++(!!)+!!+!!)+(!+-(!!))+(!++(!!)+!!+!!+!!+!!)+(+!! Unequal length driveshafts, however, have been found to deliver more torque to the wheel with the shorter driveshaft (which is usually the left wheel). Shock bolt torque is 22 ft lbs. If the vehicle drove normally, however, but still pulled to the right only during acceleration then it was suffering from torque steer. Torque specs: Torque specs: ... BALL JOINT CASTLE NUT 40ft-lbs (480in-lbs) LCA TO DAMPER FORK LOWER NUT 47ft-lbs (564in-lbs) DAMPER FORK UPPER BOLT 32ft-lbs (384in-lbs) 32mm AXLE SPINDLE NUT 134ft-lbs (1608in-lbs) OIL DRAIN PLUG 33ft-lbs (396in-lbs) (all B series) TRANNY FILL PLUG . An obvious cure for the traction problem would be to use a limited slip differential in the transaxle. In their later turbocharged front-wheel drive cars such as the Daytona and Laser, Chrysler used equal length driveshafts to control torque steer. The same trick can work for many other front-wheel drive vehicles. Engine torque also loads the control arm bushings and causes the front wheels to change toe alignment under hard acceleration. But if one or both wheels break traction and start to spin, the rear of the car can "fishtail" or drift sideways. This process is automatic. The BEST resource for Honda CRX related talk and Technical Information! FWD, RWD & 4 W/D front axle nut torque specifications was published by on 2015-06-14. Misalignment between the transaxle, driveshafts and chassis. The wheel on the. The factory spec is 134 ft-lbs. if CRX then 1500 carbureted. CONDITIONS THAT CAN INCREASE TORQUE STEER. The transaxle in a typical front-wheel drive car with a transverse mounted engine is offset to one side to physically accommodate the engine within the engine compartment. Traction is further diminished by the fact that physics is also working against front-wheel drive. Yet except for a few high end FWD cars, limited slip differentials are not available as a factory option on most FWD cars. A locked differential can't be used with FWD because of the adverse effects it would have on steering control. You can't ride a tricycle no handed but you can a bike. The slant of the engine in the chassis, for example, can have an affect. 10mm bolt = 33 ft lbs. By raising or lowering the right side of the engine slightly, any tendency to torque steer one way or the other can be neutralized. Find more similar flip PDFs like FWD, RWD & 4 W/D front axle nut torque specifications. Likewise, changing the relative height of the intermediate shaft bearing by repositioning its mount can be used to fine tune the driveline. Using the proper torque helps ensure that the wheel assembly is securely installed.
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