302.5C Mini Hydraulic Excavator Machine Systems Caterpillar


Main Control Valve - Disassemble

Usage:

302.5C GBB

Disassembly Procedure

Start By:

  1. Remove the main control valve. Refer to Disassembly and Assembly, "Main Control Valve - Remove".



    Illustration 1g01177875

  1. Remove nuts (1) and cover (2) .



    Illustration 2g01177877

  1. Remove O-ring seal (3) .



    Illustration 3g01177878

  1. Remove valve (4) .



    Illustration 4g01177879

    ------ WARNING! ------

    Personal injury can result from being struck by parts propelled by a released spring force.

    Make sure to wear all necessary protective equipment.

    Follow the recommended procedure and use all recommended tooling to release the spring force.

    ----------------------

  1. Remove bolts (6), housing (5), and the O-ring seal.

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

  1. Remove plug (8) and O-ring seals (7) .



    Illustration 5g01177880

  1. Remove valve (16) .



    Illustration 6g01177881

    ------ WARNING! ------

    Personal injury can result from being struck by parts propelled by a released spring force.

    Make sure to wear all necessary protective equipment.

    Follow the recommended procedure and use all recommended tooling to release the spring force.

    ----------------------

  1. Remove bolts (17), plate (18), wiper (19), and O-ring seal (20) .

  1. Remove bolts (30) and housing (31) .

  1. Remove retainer (27), spring (26), housing (25), washer (29), wiper (24), O-ring seal (23), and spool (22) .

  1. Remove plug (21) and O-ring seals (28) .



    Illustration 7g01177883

  1. Remove valve (32) .



    Illustration 8g01177885

  1. Repeat Steps 4 through Steps 5 for housing (37), O-ring seal (34), plug (35), and housing (36) .

  1. Remove valve (33) .



    Illustration 9g01177887

  1. Remove valve (38) .



    Illustration 10g01177889

  1. Repeat Steps 4 through Steps 5 for housing (42), plug (40), and housing (41) .

  1. Remove valve (39) .



    Illustration 11g01177890

  1. Remove valve (43) .



    Illustration 12g01177891

  1. Repeat Steps 4 through Steps 5 for housing (44), plug (48), and housing (46) .

  1. Remove plug (47) and plug (49) .



    Illustration 13g01177892

  1. Remove valve (50) .



    Illustration 14g01177894

  1. Repeat Steps 4 through Steps 5 for housing (51), plug (55), and housing (53) .

  1. Remove valve (54) and valve (56) .

  1. Remove O-ring seal (52) .



    Illustration 15g01177896

  1. Remove valve (57) .



    Illustration 16g01177898

  1. Remove O-ring seal (58) .



    Illustration 17g01177900

    ------ WARNING! ------

    Personal injury can result from being struck by parts propelled by a released spring force.

    Make sure to wear all necessary protective equipment.

    Follow the recommended procedure and use all recommended tooling to release the spring force.

    ----------------------

  1. Remove bolts (59), plate (60), wiper (61), and O-ring seal (62) .

  1. Remove bolts (71), housing (68), retainer (70), spring (69), retainer (67), wiper (61), O-ring seal (65), and spool (64) .

  1. Remove O-ring seal (63) .



    Illustration 18g01177902

  1. Remove valve (72) .



    Illustration 19g01177905

  1. Repeat Steps 4 through Steps 5 for housing (76), and housing (75) .

  1. Remove valve (73) and valve (74) .



    Illustration 20g01177906

  1. Remove valve (77) .



    Illustration 21g01177908

  1. Remove O-ring seal (78) .



    Illustration 22g01177909

  1. Repeat Steps 27 through Steps 29 for cover (79), plug (80), housing (81), and O-ring seal (82) .



    Illustration 23g01177910

  1. Remove valve (83) .



    Illustration 24g01177911

  1. Repeat Steps 4 through Steps 5 for housing (87), plug (85), O-ring seal (88), and housing (89) .

  1. Remove valve (84) and valve (86) .



    Illustration 25g01177912

  1. Remove valve (90) .



    Illustration 26g01177914

  1. Repeat Steps 4 through Steps 5 for housing (94), plug (92), and housing (95) .

  1. Remove valve (91) and valve (93) .



    Illustration 27g01177915

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

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