RING 4L3758 - Caterpillar

Install pinion gears (9) on pinion shaft (10). Repeat for pinion gears (11) and pinion shaft (12). Lubricate the assembly with clean axle oil.
Illustration 9 g00651730
Install pinion shaft (12) and pinion gears (11), as shown.
Rotate pinion gears (11) until the pinion shaft rests in the slots of the actuator housing.
Illustration 10 g00651733
Install pinion shaft (10) and two pinion gears (9), as shown.
Illustration 11 g00470451
Illustration 12 g00651744
Assemble gear (8) and actuator housing (7). Align the keys of the actuator housing with the slots in the case, as shown.Note: Lubricate the plates with clean axle oil. Lubricate the friction discs with clean axle oil prior to assembly.
Illustration 13 g00891840
Illustration 14 g00651747
Install friction discs (6) and plates (5). Start with a friction disc and end with a plate.Note: The following steps show the procedure to measure the end play gap.
Illustration 15 g00651748
Install Tooling (A) on the differential assembly, as shown.Note: The center pusher bolt of Tooling (A) must have M16 X 2.0 thread to apply the proper preload.
Illustration 16 g00651750
Tighten the center bolt of Tooling (A) to a torque of 27 N m (20 lb ft) to apply 900 kg (2000 lb) of preload on the disc packs.
Illustration 17 g00651753
Mount the magnetic base of Tooling (B) on Face (A), as shown.
Zero the dial indicator on Face (A), as shown.
Illustration 18 g00651754
Rotate the magnetic base of Tooling (B) until the dial indicator is touching (Face B).
Record the reading in three different areas of face (B).
Average the three readings. This average is the end play gap.Note: If the existing disc packs were installed in Step 4, continue with Step 21. If new disc packs were installed in Step 4, continue with Step 22.
If the end play gap in Step 20 was greater than 0.81 mm (0.032 inch), replacement of the existing disc packs is necessary.Note: Use Steps 22 through 26 if new disc packs are used.
The case is marked. Replace the old disc packs with the same disc packs. The disc packs cannot be mixed.
Install the new disc packs. Measure the end play that was described in Steps 14 through 20. The measured end play must be between 0.203 mm (0.0080 inch) and 0.508 mm (0.0200 inch).
If the measured end play gap does not yet meet specifications, replace the pinion shafts and/or both actuator housings.
Illustration 19 g00651755
Change the mark on the housing for future reference If the disc packs were changed.
Illustration 20 g00651759
Install thrust washer (4) in bevel gear (2).Note: Apply a small amount of grease to the back side of the thrust washer prior to installing. The grease will retain thrust washer (4) during the installation of bevel gear (2).
Illustration 21 g00651760
Invert bevel gear (2) and install the bevel gear on case housing (3).
Install bolts (1). Refer to "Specifications", Bevel Gear and Pinion for the correct torque specification for bolts (1).End By:
Install the differential.