D6N Track-Type Tractor Power Train Steering Planetary and Brake - Assemble Caterpillar


Steering Planetary and Brake - Assemble
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1.1. Assembly Procedure

Assembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
138-7575  Link Bracket 
6V-6640  Sealant 


    Illustration 1g00819345

    Note: Orient the disc spring with the outer edge downward.

  1. Install ring (30) and spring (29) in housing (5).


    Illustration 2g00622157

  2. Apply clean oil to seal ring (28).

    Note: Orient the seal ring with the lip downward. Refer to Illustration 2.

  3. Install seal ring (28) in piston (24).


    Illustration 3g00622156

  4. Install piston (24) and O-ring seal (27) in the housing.


    Illustration 4g00996858

  5. Lower the temperature of bearing cups (25). Install bearing cups (25) in retainer (23).

    Note: Orient the seal ring with the lip downward. Refer to Illustration 4.

  6. Apply clean oil to seal ring (26). Install seal ring (26) in retainer (23).


    Illustration 5g00622132

  7. Install retainer (23) on piston (24). Align the oil passage in retainer (23) with the oil passage and the O-ring seal in the housing. Install bolts (22).


    Illustration 6g00996857

  8. Install sun gear (16) in planetary carrier (11).

  9. Install bearings (18) in planetary gear (19).

  10. Install discs (17) and planetary gear (19) in planetary carrier (11). Install shaft (20).


    Illustration 7g00996861

    Note: If the rubber in pin (21) is damaged, replace pin (21).

  11. Align the hole in shaft (20) with the hole in planetary carrier (11) and install pin (21). Install pin (21) until the pin is even with the surface of planetary carrier (11).

  12. Repeat Steps 9 through 11 for the remaining planetary gears.


    Illustration 8g00622127

    Note: If bearing cone (15) was removed from planetary carrier (11), a new bearing must be installed.

  13. Raise the temperature of bearing cone (15). Install the bearing cone on planetary carrier (11).

  14. Apply Tooling (D) to the flange of slinger (12).

  15. Install slinger (12) on planetary carrier (11). Install bolts (13). Tighten bolts (13) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).

  16. Install ring (14) in planetary carrier (11).


    Illustration 9g00622176

  17. Position housing (5) on planetary carrier (11).

  18. Raise the temperature of bearing cone (9). Install bearing cone (9) on planetary carrier (11).


    Illustration 10g00818972

  19. Position plate (8) on the planetary carrier.

    Note: Install shim pack between plate (8) and planetary carrier (11), only if there was a shim pack originally installed in the differential group and if the same planetary carrier (11) is being reused. Shim pack thickness should be 0.31 mm (0.012nch).

  20. Install bolts (7) .


    Illustration 11g00622110

  21. Install friction discs (6) and brake plates. Alternate the friction discs and the brake plates.


    Illustration 12g00622109

  22. Position ring gear (4) on housing (5).

  23. Install bolts (3). Tighten bolts (3) to a torque of 135 ± 20 N·m (100 ± 15 lb ft).


    Illustration 13g01234433

  24. Use Tooling (A) and a suitable lifting device (not shown) in order to position the planetary group and brake (1) on final drive (2). The weight of the planetary group and brake (1) is approximately 135 kg (300 lb).

  25. Install bolts (1A) that hold the planetary group and brake (1) on the final drive.

End By:

  1. Install the right hand final drive, the planetary group, and the brake. Refer to Disassembly and Assembly, "Final Drive, Steering Planetary, and Brake (Right Side) - Install".

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