GASKET 4W7656 - Caterpillar

Disconnect tube assemblies (8) from each service brake unit.
Disconnect clips (9) and remove bolts (10).
Remove bracket assembly (11) and all the tubes as one unit.
Illustration 6 g06016974
Typical example
Remove bolts (12) that fasten differential and bevel gear (13) to the axle assembly.
Illustration 7 g06016987
Attach Tooling (A) and a suitable lifting device to differential and bevel gear (13).Note: Bolts (12) can be used as forcing bolts in the following step.
Attach three bolts (12) in the threaded holes of differential and bevel gear (13). Tighten bolts (12) evenly to separate differential and bevel gear (13) from the housing.
Use Tooling (A) and the suitable lifting device to remove differential and bevel gear (13). The weight of differential and bevel gear (13) is approximately 750 kg (1653 lb). Remove differential and bevel gear (13).
Illustration 8 g06017003
Remove O-ring seal (14) from the differential and bevel gear.Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 439-3941 Link Bracket 3
B 1U-7234 Feeler gauge 1
Thoroughly clean the mating surfaces of the differential and bevel gear and of the axle housing. Replace O-ring seals with new parts.
Illustration 9 g06017003
Install O-ring seal (14).
Illustration 10 g06017048
Use Tooling (A) and a suitable lifting device to install differential and bevel gear (13). The weight of differential and bevel gear (13) is approximately 750 kg (1653 lb). Install differential and bevel gear (13).
Illustration 11 g06016974
Typical example
Install bolts (12). Tighten bolts (12) to a torque of 750 90 N m (553 66 lb ft).
Illustration 12 g06016965
Position bracket (10) and all the tubes as one unit.
Install bolts (10). Tighten bolts (10) to a torque of 750 90 N m (553 66 lb ft).
Connect tube assemblies (8) to each service brake unit.
Connect clips (9).
Illustration 13 g06016915
Install guard assemblies (6) and (7).
Illustration 14 g06016908
Install O-ring seal (5) and pin (4).
Illustration 15 g06017088
Install cover (1) without shim. Install bolts (2). Tighten bolts (2) enough to remove the end play between the pin and cover (1).
Use Tooling (B) to measure the gap between cover (1) and the axle housing. Record the measurement. Use the measurement to determine the correct thickness of required shims.
Install a thickness of shims that will establish a −0.03 mm (−0.001 inch) preload to a 0.03 mm (0.001 inch) end play in the pin.
Illustration 16 g06016900
Install cover (1) with the measured number of shims (3). Install bolts (2). Tighten bolts (2) to a torque of 135 20 N m (100 15 lb ft).
End by:a. Remove the Trunnion Support (Oscillating Axle, Front).b. Remove the Axle Shaft.c. Remove the Oscillating Axle (Rear).