PUMP GP-PISTON 3658177 - Caterpillar

1. Position the final drive drain plug (3) on the bottom as shown. Remove drain plug (3) and drain approximately 11.4 liters (3 U.S. gal.) of oil from the final drive.2. Remove the center cover. Remove the O-ring seal from the cover.3. Use tooling (A) and remove outer axle (2).
Three bolts [tooling (B)] must be threaded in 25.4 mm (1 in) to hold the planetary carrier.
4. Remove three equally spaced bolts that hold planetary carrier (5) to hub (4). Install tooling (B) in place of three bolts as shown.5. Remove the remaining bolts (1) that hold the planetary carrier to the hub.6. Use a pry bar and move planetary carrier (5) out of the hub as far as the bolts [tooling (B)] will permit. 7. Adjust the upper hanger bracket on tooling (C) so distance (X) is 203 mm (8 in). Install lower plate (6) so the spacers are down and toward the vertical leg of the bracket.8. Attach a hoist to tooling (C) and install it onto the planetary carrier.9. The weight of the planetary carrier is 132 kg (290 lb). Remove the three bolts [tooling (B)] and remove planetary carrier (5) from the hub. Remove the O-ring seal.10. To disassemble the planetary carrier, see Disassemble Final Drive in this module.
Ring gear (8) will be free to fall when retainer (7) is removed. To prevent possible personal injury, tooling (D) and (E) must be in position to hold ring gear (8) and the hub in position when retainer (7) is removed.
11. Put tooling (D) under final drive hub (4) to hold it in position when retainer (7) is removed. Install tooling (E) to hold ring gear (8) in position. Use the bolts that hold the planetary carrier in position to install tooling (E).12. Remove the bolts and retainer (7).13. Remove the lip-type seal from the end of the spindle.Install Final Drive Planetary Carriers (In Chassis)
1. Use tooling (F) and install lip-type seal (9) into the end of the spindle. The lip of the seal must be toward the inside of the spindle. Put clean oil on the lip of the seal. 2. Put retainer (7) in position on the spindle and install the bolts that hold it. Tighten the bolts to a torque of 135 15 N m (100 11 lb ft).3. Remove tooling (D) and (E) from the final drive.4. For assembly of the planetary carriers, see topic, Assemble Final Drive in this module. 5. Install the O-ring seal onto the planetary carrier.6. Use tooling (C) and a hoist and put the planetary carrier in position on the hub. Push the planetary carrier in until it is approximately 25.4 mm (1 in) from the hub.7. Thread three bolts [tooling (B)] in 25.4 mm (1 in), evenly spaced, to support the planetary carrier. Remove tooling (C). 8. Install bolts (1). Remove tooling (B) and install the remaining three bolts that hold the planetary carrier to the hub.9. Use tooling (A) and install outer axle