302.5C Mini Hydraulic Excavator Machine Systems Caterpillar

Assembly Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

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Illustration 1	g01177915

1. Install studs (96) from cover (97) .

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Illustration 2	g01177914

2. Refer to Steps 37 through Steps 38 for housing (94), plug (92), and housing (95) .

3. Install valve (91) and valve (93) .

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Illustration 3	g01177912

4. Install valve (90) .

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Illustration 4	g01177911

5. Refer to Steps 37 through Steps 38 for housing (87), plug (85), O-ring seal (88), and housing (89) .

6. Install valve (84) and valve (86) .

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Illustration 5	g01177910

7. Install valve (83) .

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Illustration 6	g01177909

8. Refer to Steps 14 through Steps 16 for cover (79), plug (80), housing (81), and O-ring seal (82) .

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Illustration 7	g01177908

9. Install O-ring seal (78) .

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Illustration 8	g01177906

10. Install valve (77) .

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Illustration 9	g01177905

11. Refer to Steps 37 through Steps 38 for housing (76), and housing (75) .

12. Install valve (73) and valve (74) .

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Illustration 10	g01177902

13. Install valve (72) .

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Illustration 11	g01177900

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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.

14. Install O-ring seal (62), scraper (61), plate (60), and bolts (59) .

15. Install spool (64), O-ring seal (65), scraper (61), retainer (67), spring (69), retainer (70), housing (68), and bolts (71) .

16. Install O-ring seal (63) .

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Illustration 12	g01177898

17. Install O-ring seal (58) .

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Illustration 13	g01177896

18. Install valve (57) .

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Illustration 14	g01177894

19. Refer to Steps 37 through Steps 38 for housing (51), plug (55), and housing (53) .

20. Install valve (54) and valve (56) .

21. Install O-ring seal (52) .

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Illustration 15	g01177892

22. Install valve (50) .

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Illustration 16	g01177891

23. Refer to Steps 37 through Steps 38 for housing (44), plug (48), and housing (46) .

24. Install plug (47) and plug (49) .

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Illustration 17	g01177890

25. Install valve (43) .

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Illustration 18	g01177889

26. Refer to Steps 37 through Steps 38 for housing (42), plug (40), and housing (41) .

27. Install valve (39) .

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Illustration 19	g01177887

28. Install valve (38) .

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Illustration 20	g01177885

29. Refer to Steps 37 through Steps 38 for housing (37), O-ring seal (34), plug (35), and housing (36) .

30. Install valve (33) .

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Illustration 21	g01177883

31. Install valve (32) .

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Illustration 22	g01177881

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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.

32. Install O-ring seal (20), scraper (19), plate (18), and bolts (17) .

33. Install housing (31) and bolts (30) .

34. Install spool (22), O-ring seal (23), scraper (24), washer (29), housing (25), spring (26), and retainer (27) .

35. Install plug (21) and O-ring seals (28) .

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Illustration 23	g01177880

36. Install valve (16) .

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Illustration 24	g01177879

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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.

37. Install the O-ring seal, housing (5), and bolts (6) .

38. Install spool (9), retainer (10), spring (11), washer (12), spring retainer (14), housing (15), and bolts (13) .

39. Install plug (8) and O-ring seals (7) .

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Illustration 25	g01177878

40. Install valve (4) .

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Illustration 26	g01177877

41. Install O-ring seal (3) .

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Illustration 27	g01177875

42. Install cover (2) and nuts (1) .

End By: Install the main control valve. Refer to Disassembly and Assembly, "Main Control Valve - Install".