303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Final Drive and Travel Motor - Assemble Caterpillar

Assembly Procedure

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Illustration 1	g01243022

1. Install Duo-Cone Seal Gp (53).
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   Illustration 2	g01243021

2. Install bearing (52) and Duo-Cone Seal Gp (51).
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   Illustration 3	g01243019

3. Install ring gear assembly (49) onto motor housing (50).
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   Illustration 4	g01243018

4. Use Tooling (C) in order to install nut (48).

5. Tighten nut (48) to a torque of 240 N·m (177 lb ft).
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   Illustration 5	g01371953

6. Raise the temperature of bearing (48A).

7. Install bearing (48A) onto shaft (45).
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   Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

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   Illustration 6	g01243016

8. Install spring (45) and seal (47).
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   Illustration 7	g01243015

9. Install piston (43), shaft assembly (45), and rockers (44).
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   Illustration 8	g01243013

10. Install swashplate (42).
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    Illustration 9	g01243012

11. Install pistons (39), bearing (41), and retainer (40).
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    Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

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    Illustration 10	g01243011

12. Install washers (37) and spring (38).
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    Illustration 11	g01243009

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    Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

13. Use a suitable press and Tooling (B) in order to install retaining ring (36).
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    Illustration 12	g01243008

14. Install pins (35).
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    Illustration 13	g01243007

15. Install barrel (32), discs (33), and plates (34).
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    Illustration 14	g01243006

16. Install O-ring seals (31).
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    Illustration 15	g01244899

17. Install piston (30).
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    Illustration 16	g01243004

18. Install O-ring seals (28), O-ring seal (27), and springs (29).
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    Illustration 17	g01243003

19. Install bearing (26) and port plate (25).
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    Illustration 18	g01243001

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    Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

20. Install head (23) and bolts (24). Tighten bolts (24) to a torque of 29 ± 5 N·m (21 ± 4 lb ft).
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    Illustration 19	g01243000

21. Install poppet (22).
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    Illustration 20	g01242998

22. Install spring (21).
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    Illustration 21	g01242996

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    Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

23. Install the O-ring seal and plug (20). Tighten plug (20) to a torque of 196 ± 15 N·m (145 ± 11 lb ft).
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    Illustration 22	g01242992

24. Install washers (16), coupling (17), washer (18), and setscrews (19).
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    Illustration 23	g01242991

25. Install bearings (14), gear (15), and gears (13).
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    Illustration 24	g01242989

26. Install retainers (12) and bolts (11). Tighten bolts (11) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).
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    Illustration 25	g01242988

27. Install carrier (9) and washer (10).
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    Illustration 26	g01242987

28. Install bearings (7), gear (8), and gears (6).
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    Illustration 27	g01242984

29. Install retainer (5) and bolts (4). Tighten bolts (4) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).
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    Illustration 28	g01242982

30. Install cover (3), ring (1), and plug (2). Tighten plug (2) to a torque of 59 ± 10 N·m (44 ± 7 lb ft).

End By:

1. Install the final drive and the travel motor. Refer to , "Final Drive and Travel Motor - Install".