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REPAIR KIT 0544537 - Caterpillar

0544537 REPAIR KIT Caterpillar parts REPAIR
Alternative (cross code) number:
Caterpillar 0544537 REPAIR KIT
Weight: 0.80 pounds 0 kg.

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This is a 3.0-hour job
If there has been a previous locknut repair, part age will apply. Retain documentation of the previous repair in the dealer's records for audit purposes, and specify repair date and machine hours in the " additional Comments" section of the warranty claim.
This program will cover after failure resultant damage parts and required labor. Explain the resultant damage, additional parts and labor required in the claim story.
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
Illustration 1.1.1: 286-3688 Locknut. 1. Thrust Washer, 2. Locking Washer, 3.Nut, 4.Retainer.
Before failure INSTALLATION PROCEDURE With the Differential installed in the Axle:
1. Drain oil from one final drive, remove that final drive's cover, pull axle shaft and sun gears to disengage the axle shafts from differential.
2. Remove drive shaft and seal retainer housing.
3. Measure the rolling torque at the pinion and record this value. The preferred torque wrench should be a dial type and read between 1-10 Nm.
4. Loosen the setscrews on the 184-4265 or 250-7858 locknut and remove the locknut and thrust washer.
5. Using a RUBBER hammer hit the pinion shaft several times to loosen the outer bearing on the pinion shaft. Measure the rolling torque and check for a reduction in the rolling torque. If there is no reduction in rolling torque hit the pinion shaft with the rubber hammer again and check the rolling torque. If there is still no reduction in rolling torque continue to step 6.
6. Install the new thrust washer and nut that come with the 286-3688 locknut assembly.
The old thrust washer needs to be removed or the 286-3688 locknut assembly will not fit correctly and could cause a failure.
Illustration 1.1.2: Correct direction to install the nut. The retainer groove should be towards the thrust washer. Some locknuts have two retainer grooves making installation direction irrelavent.
6. Tighten the locknut till you have increased the rolling torque to the value recorded in step #3. The overall rolling torque value should be equal to the rolling toque measured in Step #3. If no reduction in rolling torque was seen during step 5, then increase the rolling torque by 0.5 Nm.
7. Install the locking washer onto the nut so the tabs line up with the grooves on the thrust washer. The locking washer has eight different positions on the nut in order to get the tabs to align with the thrust washer slots. The nut should not be moved in order to get the locking washer to align with both the nut and the thrust washer.
If the locking washer does not fully align with the nut and the thrust washer. Position the locking washer on the nut so that it is very close to fitting into the thrust washer grooves so the nut has to turn TIGHTER. Rotate the nut tighter until locking washer fits into the grooves on the thrust washer.
The nut should not have to be moved more than 1 degree to align the locking washer and thrust washer. If the Locknut

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