345C MHPU Mobile Hydraulic Power Unit Machine Systems Caterpillar


Main Control Valve - Assemble

Usage:

345C L B6N

Assembly Procedure




    Illustration 1g01189278

  1. Install O-ring seals (205) .



    Illustration 2g01189198

  1. Position housing (202) onto housing (204) .

  1. Install bolts (203) .



    Illustration 3g01189197

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

    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.

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

  1. Install sleeve (194), pin (195), sleeve (196), spool (197), spring (198), retainer (199), O-ring seal (200), and plug (201) .



    Illustration 4g01189196

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

    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.

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

  1. Install O-ring seal (193), O-ring seal (192), pin (191), sleeve (190), sleeve (189), piston (188), piston (187), spring (186), spring (184), shims (183), the backup rings, O-ring seals (182), piston (181), and O-ring seal (180) .

  1. Install the O-ring seal, plug (185), plug (178), cover (179), and bolts (177) .



    Illustration 5g01189194

  1. Install O-ring seals (174), covers (175), and bolts (176) .



    Illustration 6g01189193

  1. Install O-ring seal (169) and plug (170) .

  1. Install O-ring seals (171), covers (172), and bolts (173) .



    Illustration 7g01189191

  1. Install O-ring seal (168) and plug (167) .

  1. Install O-ring seal (166), cover (165), and bolts (164) .



    Illustration 8g01189195

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

    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.

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

  1. Install sleeve (163), piston (162), spring (160), backup rings (154), O-ring seals (155), and cover (159) .

  1. Install rod (156), shim (157), spring (152), ball (158), and O-ring seals (153) .

  1. Install housing (151) and bolts (161) .

  1. Install O-ring seal (150) and plug (149) into housing (151) .



    Illustration 9g01189189

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

    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.

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

  1. Install valve assembly (142) and valve assembly (137) .

  1. Install bolt (138), spring (139), poppet (140), spool (141), the O-ring seal, valve (143), spring (144), the O-ring seal, guide (145), O-ring seal (146), housing (147), and bolts (148) .



    Illustration 10g01189188

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

    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.

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

  1. Install retainer (128), spring (129), retainer (130), and bolt (131) .

  1. Install spool assembly (127) .

  1. Install O-ring seals (132), plate (133), O-ring seal (134), cover (135), and bolts (136) .

  1. Repeat Steps 18 through Step 20 for valve assembly (126) .



    Illustration 11g01188326

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

    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.

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

  1. Install retainer (119), spring (120), retainer (121), bolt (125), and spool assembly (118) .

  1. Install O-ring seal (122), housing (123), and bolts (122) .

  1. Repeat Step 22 through Step 23 for valve assembly (117), valve assembly (116), valve assembly (115), valve assembly (114), and valve assembly (113).



    Illustration 12g01188325

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

    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.

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

  1. Install spool (107), O-ring seal (112), piston (111), piston (106), spring (110), and O-ring seal (109) .

  1. Install O-ring seal (108), plug (104), housing (105), and bolts (103) .



    Illustration 13g01188324

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

    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.

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

  1. Install retainer (93), washer (94), O-ring seal (102), piston (101), spring (100), piston (95), O-ring seals (99), retainer (98), spring (97), and sleeve (96) .

  1. Install O-ring seal (89), O-ring seal (91), housing (88), nut (92), O-ring seal (87), housing (86), O-ring seal (85), valve (84), and nut (83) into housing (90) .



    Illustration 14g01188322

  1. Install valve (82), O-ring seal (81), and plug (80) .

  1. Install O-ring seals (79), O-ring seals (78), and check valve (77) .



    Illustration 15g01188321

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

    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.

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

  1. Install O-ring seals (75) and check valves (76) .

  1. Install backup ring (72), the O-ring seal, O-ring seal (73), and plug (74) .

  1. Install poppet (71), spring (69), the O-ring seal, backup ring (70), and valve (68) .



    Illustration 16g01188320

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

    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.

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

  1. Install sleeve (66), O-ring seals (65), sleeve (64), spool (63), spring (62), spool (61), spring (60), shims (59), washer (58), the O-ring seal, the backup ring, O-ring seal (57), housing (56), O-ring seal (55), rod (54), and nut (53) into housing (67) .



    Illustration 17g01188319

  1. Install the O-ring seals and check valves (51) .

  1. Install the backup ring, the O-ring seals, and plug (52) .

  1. Install the O-ring seals and plugs (50) .



    Illustration 18g01188318

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

    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.

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

  1. Install plug (41), O-ring seal (42), shims (43), spring (44), ring (45), poppet (47), sleeve (48), and O-ring seal (49) .

  1. Install the O-ring seal and plug (46) .



    Illustration 19g01188317

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

    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.

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

  1. Install spool (35), O-ring seal (34), and plug (33) .

  1. Install sleeve (30), spring (31), O-ring seal (40), and plug (32) .

  1. Install O-ring seals (38) and plugs (39) .

  1. Install O-ring seals (37) and plugs (36) .

  1. Install O-ring seals (29) and plugs (18) .



    Illustration 20g01188316

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

    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.

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

  1. Install bolts (20), housing assembly (21), spring (22), poppet (23), ring (24), sleeve (25), spring (26), and poppet (27) .



    Illustration 21g01188315

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

    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.

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

  1. Install sleeve (18), poppet (15), spring (12), valve (9), O-ring seal (8), plate (7), and bolts (6) .

  1. Install sleeve (19), backup ring (13), O-ring seal (16), and plug (10) .

  1. Install backup ring (14), O-ring seal (17), and plug (11) .



    Illustration 22g01188313

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

    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.

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

  1. Install poppet (5), spring (4), O-ring seal (2), backup ring (3), and plug (1) .

  1. Repeat Step 49 for the remaining plugs.

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

Caterpillar Information System:

345C MHPU Mobile Hydraulic Power Unit Machine Systems Main Control Valve - Disassemble
Pin Grabber Quick Hitch Quick Coupler Installation and Removal
Pin Grabber Quick Hitch Quick Coupler - Lubricate
345C MHPU Mobile Hydraulic Power Unit Engine Supplement Muffler - Remove and Install
390D Excavator Machine Systems Joystick Control - Remove and Install - Right Hand
390D Excavator Machine Systems Joystick Control - Remove and Install - Left Hand
325C Excavator Engine Supplement Air Inlet Cover - Remove and Install
325C Excavator Engine Supplement Bottom Guard (Engine) - Remove and Install
303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators Engine Oil and Filter - Change
303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators Engine Oil Sample - Obtain
Pin Grabber Quick Hitch Quick Coupler - Inspect
303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators Engine Oil Level - Check
303.5E2, 304E2, 305.5E2 and 305E2 Mini Hydraulic Excavators Fuel Tank Cap and Strainer - Clean
365C Excavator Machine Systems Control Manifold (Pilot Oil) - Remove
365C Excavator Machine Systems Control Manifold (Pilot Oil) - Install
302.5C Mini Hydraulic Excavator Machine Systems Upper Frame and Undercarriage Frame - Connect
C13, C15, and C18 Tier 4 Final Engines Valve Mechanism
302.5C Mini Hydraulic Excavator Machine Systems Swing Gear and Bearing - Remove and Install
302.5C Mini Hydraulic Excavator Machine Systems Swing Motor - Disassemble
302.5C Mini Hydraulic Excavator Machine Systems Swing Motor - Assemble
365C Excavator Machine Systems Relief Valve (Pilot) - Install
345C MHPU Mobile Hydraulic Power Unit Engine Supplement Exhaust Manifold - Remove and Install
365C Excavator Machine Systems Pedal Control (Travel) - Remove
365C Excavator Machine Systems Pedal Control (Travel) - Install
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.