TURBO A 7S8756 - Caterpillar

Illustration 2 g00303123
Remove the bottom half of the axle housing from Tooling (B). Install axle housing assembly (2) on Tooling (B), as shown.
Illustration 3 g00303124Note: To remove retaining ring (3), planetary carrier assembly (5) must be disassembled.
Use Tooling (C) to remove retaining ring (3) from axle shaft (4).
Illustration 4 g00303169
Install Tooling (D) and suitable lifting slings to planetary carrier assembly (5), as shown.
Use a hoist to remove the planetary carrier assembly from the axle housing assembly. The weight of the planetary carrier assembly is 80 kg (175 lb).
Illustration 5 g00303170
Illustration 6 g00303171
Use the following steps to disassemble planetary carrier assembly (5):
Use a hammer and a punch to push spring pin (7) all the way into shaft (6).
Remove shaft (6), thrust washers , and (8) planetary gear (9) from the carrier.
Remove bearing (10) from planetary gear (9).
Use a hammer and a punch to remove spring pin (7) from shaft (6).
Repeat Steps 7.a through 7.d for the remaining two planetary gears.
Remove retaining ring (3) from the carrier.
Illustration 7 g00303172
Illustration 8 g00303173
Install two bolts (11) of a suitable size in the rim of the axle flange. This will prevent the axle shaft from turning when bearing nut (12) is removed.
Illustration 9 g00303174
Use Tooling (E) to remove bearing nut (12) from the axle shaft.
Illustration 10 g00303176
Install Tooling (A) and suitable lifting slings to the axle housing, as shown. Put slight lifting tension on the axle housing.
Illustration 11 g00303177Note: The bearing cone which is located under bearing nut (12) will be removed at the same time as the axle housing.
Fasten Tooling (F) to the axle housing, as shown. Use the center stud to push the axle shaft and the bearing cone from the axle housing. Make sure that upward pressure is constantly applied.
Use the hoist to remove the axle housing and the inner bearing cone from the axle shaft. The weight of the axle housing is 105 kg (231 lb).
Remove the inner bearing cone from the axle housing.
Illustration 12 g00303179
Remove inner bearing cup (13) from the axle housing.Note: Planetary ring gear (15) will be destroyed during removal.
Remove ring gear (15) from the axle housing. Use a torch to cut the ring gear in two places that are directly across from each other. Cut the ring gear at the position of the locating dowels. For an alternate method, make three welds that are equally spaced around the circumference of the ring gear. This will cause the ring gear to shrink.
Remove dowels (14).
Illustration 13 g00303180
Remove Duo-Cone seal (16) and bearing cup (17) from the opposite end of the axle housing.
Illustration 14 g00303181
Remove Duo-Cone seal (19) and bearing cone (18) from the axle shaft.