0000067515 00000 n Along with bearing adjustment, proper lubrication is essential to the ... following adjustment procedure must be followed. If correct end play is not achieved, adjust according to adjustment increments shown in Table 1. h�b``0c``�````�gf@,`̱ (�l�$n�J�,qlK�00. Remove the wheel cover if so equipped. wheel bearing adjustment procedure STEP 1: Lubricate the wheel bearing with clean axle lubricant of the same type used in the axle sump or hub assembly. Manual Wheel Bearing Adjustment Procedures Step 1: Lubricate the tapered roller bearing with clean axle lubricant of the same type used in the axle sump or hub assembly. RP 618 – Wheel End Adjustment Procedures: Outlines a nine-step procedure to achieve a verifiable wheel bearing end play of 0.001” to 0.005”. The Dana LMS™ hub design eliminates bearing adjustment and variables that cause excessive endplay leading to premature wheel seal failures. Finally, remove the rotor itself. At the same time, you need to continue to rotate this rotor, re-torque the nut, this time to 10-foot pounds. 0000003383 00000 n Manual Wheel Bearing Adjustment Procedures Step 1: Lubricate the tapered roller bearing with clean axle lubricant of the same type used in the axle sump or hub assembly. Needless to say, tightening a wheel bearing has to be done carefully and precisely. This deep spalling occurs when the direct contact between rollers and raceway caused by excessive pre-load superheats the bearing, softening the material, and allowing chunks to be torn away from the raceway and rollers during operation. 0000046676 00000 n PRO-TORQ ® AND ZIP-TORQ ® INSTALLATION PROCEDURE FOR HUBS WITH MANUALLY ADJUSTED WHEEL BEARINGS. The pressure between the two inner races and outer races set the pre-load and the paths of the bearings. Also, some manufacturers can have different assembly procedures. Remove socket and verify locking clip tabs have engaged the adjustment slots in the retainer cage. While rotating the rotor to ensure proper seating of the rollers, induce pre-load by using a torque wrench to tighten the adjusting nut to 50-foot pounds. 4 0 obj <> endobj xref 4 57 0000000016 00000 n 0000009442 00000 n Always support vehicle with jack stands. BEARING ADJUSTMENT. Illustration 2. 0000029487 00000 n Place the thrust washer and locking collar onto the spindle. The bearing numbers I got off the bearings. You are setting the initial load and path for the ball bearings and races. Applications Now Being Accepted For Mitchell 1 Scholarship, Advance Launches DieHard Battery-Stocking Program, ASE Expands Availability Of Tests In Spanish, Wheel Bearing Adjustment And Preload Procedures, The Importance of Worn Center Bearing Replacement. 0000008626 00000 n Take your wrench and place it over the wheel bearing nut. 0000001678 00000 n If you don’t get it right, the bearing could turn to molten metal or the wheel could come off the vehicle. Tighten the bearing for the first time. 2. Rotate the hub. 0000089678 00000 n If any looseness is felt, adjust the wheel bearings as follows. We had some issues with rear wheel studs, which involved removal of the entire hub assembly. To help, Timken has established an easily measurable three-step adjustment procedure. TMC’s Recommended Wheel Bearing Adjustment Procedure for Standard Spindle Nuts Bearing Lubrication: Lubricate the wheel bearing with clean lubricant of the same type used in the axle sump or hub assembl y. Mount the indicator’s base as close to the center of the hub rotor as possible. 4. Transcript: The proper adjustment of the two bearings in the hub assembly is one of the most important aspects of the installation process. This very simple system allows very accurate and quick adjustment of bearing play. the undercut groove on each side until the keeper is released. Techs reluctant to over-tighten a wheel bearing may err on the side of caution, preferring a slightly loose bearing to one that is too tight. Transcript: The proper adjustment of the two bearings in the hub assembly is one of the most important aspects of the installation process. But, if you understand what is happening behind the axle or wheel nut, you can gain some confidence. It is rare to find tapered roller bearings on a late model car or truck. Listen to the latest Brake & Front End podcast. Its about 1/4 inch thicker, and protrudes out the back of the wheel a little farther. Refer to Figure 10. Refer to Figures 2, 3, and 4. This process cold presses the inboard flange and inner race so the bearing is pre-loaded. You are not adjusting the rolling elements and races. Wheel End: Servicing Carbon-Ceramic Brakes, News: Applications Now Being Accepted For Mitchell 1 Scholarship, News: Advance Launches DieHard Battery-Stocking Program, Video: VIDEO: The Importance Of Digital Vehicle Inspections. As the damaged area grows due to spalling or brinelling, the grease inside the bearing exceeds the maximum temperature. A neglected cap may take some time to free. NOTE: Never use an impact wrench when tightening or loosening lug nuts or bolts during the procedure. 0000036322 00000 n Chock one of the other wheels on each side of the car. 0000011534 00000 n On the other side of the spectrum, loosening the adjustment nut too much will cause excessive end play in the bearings, allowing a rocking motion that disrupts the even distribution of force along the rollers. The Industry Needs A Better Wheel Bearing Adjustment Solution. 2. Wheel Bearing Adjustment Procedure . For standard grease or oil axles using cotter pin: 1. Failure to back off the nut will cause the bearing to run hot and be damaged. 1. Tighten the nut until it is firm and cannot be tightened anymore. 0000056780 00000 n These types of bearings are often called Gen 1 wheel bearings. 2. (2) Tighten adjusting nut (2) while rotating the wheel until there is a slight bind to be sure all bearing surfaces are in contact. Never use an impact wrench when tightening or loosening lug nuts or bolts during this procedure. Follow these installation procedures carefully to obtain proper wheel bearing adjustment and increase service life. Back off the inner adjusting nut one full turn. New Wheel Bearing Adjustment Procedure For The Rear Wheels Of 776, 776B Tractors and 777, 777B Trucks. While oscillating, push the rotor in and read the dial indicator. It’s important to adjust the wheel bearing end play to the proper specifications. WARNING: Never work under a vehicle supported by only a jack. It wouldn't be too much of … I've used the above procedure for 20 + years & have never had a wheel bearing failure. An out-of-adjustment bearing affects the operation and service life of the spindle, wheel seal and brake components. Step 6. Install retainer (4) without shims (5). Put spindle housing (7) on a support (or floor) with the small end up. BEARING ADJUSTMENT. Tapered roller bearings can carry a heavy load because of a larger contact patch between the rollers and races. * Looseness of end play in the bearings can cause performance loss in the wheel end, which can lead to unnecessary repair costs. Basically, there should be no play in the bearings. Tighten the nut until it is firm and cannot be tightened anymore. Acceptable End Play: The dial indicator should be attached to the hub or brake drum with its magnetic base. This hub has an adjustment nut on the left hand side of the wheel compatible with the hub wrench M40123. TMC RP 618A, Wheel Bearing Adjustment Procedure, appears in TMC’s 2010-2011 Recommended Practices Manual, and is published by the Technology & Maintenance Council (TMC) of American Trucking Associations; 950 N. Glebe Road, Arlington, VA 22203; (703) 838-1763; http://tmc.truckline.com. Once again, loosen the adjusting nut, this time by only 1/6 to 1/4 turn. With the indicator tip against the end of the spindle, set the indicator to zero. This procedure applies to steer, drive and trailer axle assemblies using conventional double nut or single nut systems on Class 6, 7 and 8 trucks. nuts, is an ideal wheel-end bearing adjustment solution. The adjustment procedure is below. Remove the outer bearing. Oil is the recommended wheel-end lubricant in this procedure but alternatively grease may be used. STEP 2. Back off 1/10 turn (1 wheel stud) Check Endplay. This can, however, damage the rotor, so it's best to use a mallet only if you are not planning on reusing the same rotor. Lubricate the wheel bearings with oil. The seals and pads numbers I got from RockAuto During adjustment, position the rollers tightly against the bearing cone (inner race) large rib. After placing the hub, bearings, Video tutorial on how to preload a tapered roller wheel bearing on a vehicle. 0000007545 00000 n Setting wheel bearings correctly requires diligence on the technician's part, and of course adherence to procedures and the right tools. News: ASE Expands Availability Of Tests In Spanish. 0000009034 00000 n After a non-drive-wheel bearing has been properly adjusted, the wheel should have how much end play? Back off the inner adjustment nuts as per chart below. Video: VIDEO: Where Should Brake Lubricants Be Applied? Nobody wants a wheel-off occurrence. Pre-loading the bearings assures that the races in the hubs are 100% in place against their machined stop points and keeps the hub from wobbling after a few miles. Hub and Outer Bearing Assembly - Oil Lubricant 14 ... T82006 Stud Replacement Procedure Table 1: Relative wheel-end literature preparinG Trailer For Service Information for trailer preparation, safety and precautionary statements, refer to Hendrickson literature 0000055495 00000 n In order to ensure correct adjustment, the tapered bearings are required to have “zero end play” at all times. Bearing Adjustment Scope: This service procedure is intended to provide general instructions for reinstallation of a hub onto an axle after removal for any service requirements. Lubricate the wheel bearings with oil. This very simple system allows very accurate and quick adjustment of bearing play. THIS PROCEDURE WILL CONSISTENTLY PRODUCE A BEARING SETTING OF .001” TO .003” END PLAY. The following is intented to be a rough guide for tightening up the tapered wheel bearings commonly found on 70, 80 and 100 series (fronts only) Land Cruisers but in reality can be applied to most 4x4s - they key thing is to make sure the bearings are bedded in properly. When using Pro-Torq, use a screwdriver to carefully pry the keeper arm from . 0000036435 00000 n Place the inner bearing into the back of the hub and install a new bearing seal. Wheel Bearing Tightening Procedure. This hub has an adjustment nut on the left hand side of the wheel compatible with the hub wrench M40123. Wheel Bearing Adjustment Loose bearings will lead to excessive inner tire wear and will also lead to vauge turn-ins. Install the wheel hub and bearing onto spindle and Torque the inner adjusting nut to 200 ft-lbs while rotating the hub assembly. VIDEO: Where Should Brake Lubricants Be Applied? 0 votes. Doctor Preload® Delivers. While some techs I've spoken to say a wee bit in the front wheels may be OK, all of them say there should be absolutely no play in the rear wheel … Safely. 0000036660 00000 n I measured the seal to verify it had clearance when installed. 0000012222 00000 n %PDF-1.5 %���� wheel bearings adjustment. It appears to be OK. PART NUMBERS. 0000001436 00000 n Hub end-float adjustment not required. 0000122368 00000 n To help, Timken has established an easily measurable three-step adjustment procedure. Adjusting semi- truck wheel bearings according to the RP 618 procedure Re-torque the inner adjusting nut to 50 ft-lbs while rotating the wheel hub assembly. Actually, unlike ball bearings, which can run with a slight preload, taper roller bearings MUST have some slight running clearance. The bearing end play is equal to the total indicator movement, which should be between .001 and .005 inches. INSTALLATION PROCEDURE AND WHEEL BEARING ADJUSTMENT REMOVE THE KEEPER FROM THE NUT: A, B, C Use a small screwdriver to carefully pry the keeper arm from the undercut groove on each side until the keeper is released. 0000056305 00000 n this process, components (hub, seal, inner and outer bearings) are specified and individually assembled, one at a time, onto the spindle (or into the hub bore) The Standard Service wheel-end includes components available from Hendrickson, but specified by the customer Whereas Hendrickson’s Extended Life wheel- This means achieving an endplay between .001 inches and .005 inches. 0000033674 00000 n Can someone help me with obtaining the correct procedure for reinstallation of the rear wheel hub on a 1981 R-Model with the standard rear end housing. When using Pro-Torq, use a screwdriver to carefully pry the keeper arm from . Wheel Bearing Adjustment Procedures 942296 New technology placed on specific components within the wheel end system, required modifications to existing tapered wheel bearing adjustment procedures. Wheel Bearing Adjustment. A non-drive-wheel bearing adjustment procedure includes a final spindle nut tightening torque of _____ asked Feb 8, 2017 in Trades & Technology by MyTHIC. My chassis is a 1999 F53, 20,500lb chassis. 0000055875 00000 n Then loosen the adjusting nut one full turn. 3. Excessive tightening of the adjustment nut, otherwise known as excessive pre-load, can cause the rapid deep spalling shown in these pictures. NOTE: Never use an impact wrench when tightening or loosening lug nuts or bolts during the procedure. Many hub units do not require an adjustment or pre-load procedure. 0000003417 00000 n The following service procedures apply to the wheel end assemblies of the Dana steer and drive axle models listed. 2. Consistently. Fit the wheel in the frame or fork and tighten the quick release skewer using a reasonable force; 2. RP 622 – Wheel Seal and Bearing Removal, Installation, and Maintenance: Guidelines for acceptable storage, handling and installation of wheel bearings and seals.
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