PIN 1987889 - Caterpillar

This is a 42.0-hour job
If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.
Two claims are allowed per truck.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
Refer to the Service Manual if/as necessary.
Assemble new mid-axle support bearing:
1. Use induction bearing heater or oven to heat 428-7803 Bearing (no more than 120 degrees C)
2. Set Guide on table with larger diameter down
3. Apply thin bead of Loctite 648 or 609 to top portion of smaller diameter (see picture)
4. Install heated bearing onto guide and assure it seats onto the shoulder (may have to use slight press)
5. Let temperature stabilize
Image1.1.1
Image1.1.2
Insert bearing and guide into housing:
1) Set housing on table
2) Insert bearing assembly with guide into housing
- Bearing will be tight slip fit on OD
- May have to slightly drive bearing into housing
4) Install retaining ring into groove.
Image1.2.1
Remove the following in this order:
1) Final Drive Cover
2) Outer Sun Gear
3) Outer Planetary Gear Set
4) Ring Gear
5) Inner Planetary Gear Set
Remove the four lubrication tubes in order to access the retainer plate.
Remove the retainer plate. The bolts used to attach the retainer plate cannot be reused.
Keep the shim pack. It will need to be used during assembly.
Remove the mid-axle support housing.
Install the mid-axle bearing components, shim pack and retainer plate using the 177-9755 Bolts and 9X-8399 Washers. Use the following torque procedure:
1) Install 10 bolts equally spaced. Tighten to 450Nm +/- 50Nm (330lb-ft +/- 40lb-ft) using an alternate sequence.
2) Install the remaining 10 bolts. Tighten to 800Nm +/- 100Nm (590lb-ft +/- 75lb-ft) plus a 90 degree rotation.
3) Tighten bolts in step 1 to 800Nm +/- 100Nm (590lb-ft +/- 75lb-ft) plus a 90 degree rotation.
Reattach the 4 lubrication tubes.
Image1.5.1
Install the inner planetary group. Verify that the planetary pin holes are aligned with the lubrication tubes by using 1/2" dowels or rods during installation.
Image1.6.1
Image1.6.1
Install the following in this order:
1) Ring Gear
Replace the 7X-4781 O-ring when installing the ring gear.
2) Outer Planetary Gear Set
3) Outer Sun Gear
4) Final Drive Cover
Replace the 150-8791 Seal when installing the final drive cover.
When installing the final drive cover, apply Loctite 247 to the bolts and tighten to 320Nm +/- 40Nm (240lb-ft +/- 30lb-ft)
Attach rear final drive, brake, & wheel group according to KENR8715.
The 147-0169 Bolts will need to be replaced with new bolts when installing the assembly. Replace the 314-4127 Toric Ring when installing the final drive, brake & wheel group to the machine.
For trucks equipped with 392-6516 Axle Shaft, it will need modified as shown. Trucks equipped with 292-0243 Axle Shaft will discard this shaft and install 428-9377. Either shaft will require the installation of the new 8C-3103 O-ring. Lubricate the o-ring with 60wt oil or other lubricant to help keep o-ring in place during assembly.
Attach the new Rear Axle Shaft according to KENR8715. Replace the 180-4365 O-ring when installing the