WALL AS-LH 3447352 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3939 Link Bracket As 1
Illustration 1 g01208414
Position the machine onto suitable cribbing below the first roller, as shown. Ensure that the master pin is above the center line of the sprocket.
Separate the track. Refer to Disassembly and Assembly, "Track - Separate".
Illustration 2 g01208420
Remove bolts (1) that hold sprocket (2) to the final drive.
Illustration 3 g01208441Note: Use several washers between Tooling (A) and sprocket (2). This will prevent damage to the sprocket.
Attach Tooling (A) and a suitable lifting device to sprocket (2), as shown.
Remove sprocket (2). The weight of sprocket (2) is approximately 40 kg (90 lb). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 439-3939 Link Bracket As 1
B - Loctite 243 -
Illustration 4 g01208441Note: Use several washers between Tooling (A) and sprocket (2). This will prevent damage to the sprocket.
Attach Tooling (A) to sprocket (2), as shown. The weight of sprocket (2) is approximately 40 kg (90 lb).
Position sprocket (2) onto the final drive.
Illustration 5 g01208420
Before assembly, remove compound, oil, and dust from female threads, then apply Tooling (B) to threads of bolts (1).
Tighten bolts (1) in an alternating sequence to a torque of 250 25 N m (184 18 lb ft). Turn an additional angle of 35 5 degrees. Refer to Service Magazine , M0083843 , "An Improved Bolt Tightening Procedure for the Critical Joints Is Now Used on all Excavators" for more detailed information.
Remove Tooling (A).
Connect the Track. Refer to Disassembly and Assembly, "Track - Connect".
Remove the cribbing from the front roller.