ENGINE AR 4W0280 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
B 1U-9200 Lever Puller Hoist 3
C 439-3939 Link Bracket As 4 Start By:
Remove the tire and rim.
Remove the center drive shaft.
Remove the stabilizer rod for the center axle.
Remove the center axle oil cooler pump and motor.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Drain the oil from the center axle housing. Refer to Operation and Maintenance Manual, "Differential and Final Drive Oil - Change".
Illustration 1 g06133413
Remove bolts (1) and plate (3) and reposition hose assemblies (2). Repeat for the opposite side of the frame.
Illustration 2 g06135279
Attach Tooling (B) to the rear section of center suspension frame (4) on each side of the machine as shown. The weight of center suspension frame (4) is approximately 234 kg (516 lb).
Illustration 3 g06135281
Typical Example
Use a suitable bar stock and clevis and attach Tooling (B) to the front of center suspension frame (4) as shown. The weight of center suspension frame (4) is approximately 234 kg (516 lb).
Illustration 4 g06133368
Remove tube assembly (5).
Illustration 5 g06133370
Remove bolts (6) and plate (7).
Illustration 6 g06133372
Disconnect harness assembly (9) and reposition harness assembly (9).
Disconnect hose assemblies (8).
Remove tube assembly (10).
Illustration 7 g06133406
Remove straps (14) and disconnect hose assemblies (12) and (14).
Remove tube assembly (11).
Illustration 8 g06133414
Attach Tooling (C) and a suitable lifting device to axle (17). The weight of axle (17) is approximately 1141 kg (2515 lb).
Remove bolts (15) and (16).
Illustration 9 g06133421
Use two people to remove bracket (20). The weight of bracket (20) is approximately 21 kg (46 lb). Remove bolts (19) and bracket (20).
Lower and remove axle (17).Installation Procedure
Install axle (17) in the reverse order of the removal.
Tighten bolts (19) to a torque of 900 100 N m (664 74lb ft)
Tighten bolts (18) to a torque of 270 40 N m (199 230b ft).
Tighten bolts (16) to a torque of 900 100 N m (664 74lb ft)
Tighten bolts (15) to a torque of 270 40 N m (199 230b ft).