320D2 GC Excavator Machine Systems Main Control Valve - Remove and Install Caterpillar


Main Control Valve - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
A  138-7573  Link Bracket 

Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: Put identification marks on all hoses, on all hose assemblies, on all harness assemblies, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.

Note: Put orientation and location marks on all fittings for installation purposes.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


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

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.


  1. Drain the hydraulic tank.


    Illustration 1g01214585

  2. Lift hood (1). Remove panel (2).


    Illustration 2g01214599

  3. Remove clips (9). Disconnect hose assembly (10). Disconnect hose assembly (11).


    Illustration 3g01214609

  4. Disconnect hose assemblies (12), (13), (14), (15), (16), (17), (18), (19), (20), (21), (22), (23), (24), and (25).


    Illustration 4g01214903

  5. Disconnect harness assembly (26). Disconnect hose assemblies (27), and (28). Disconnect tube assembly (29). Disconnect hose assemblies (30), (31), and (32).


    Illustration 5g01214963

  6. Disconnect tube assembly (33). Disconnect hose assemblies (34), (35), (36), and (37). Disconnect hose assembly (38). Remove tube assembly (39).


    Illustration 6g01214977

  7. Disconnect hose assemblies (40), (41), (42), (43), and (44).


    Illustration 7g01214995

  8. Remove cable straps (45). Remove clip (46). Disconnect hose assemblies (47), and (48).


    Illustration 8g01215018

  9. Remove cable straps (49). Position harness assembly (26) out of the way. Remove hose assemblies (50).


    Illustration 9g01215034

  10. Disconnect hose assemblies (51), (52), and (53).


    Illustration 10g01215037

  11. Remove bolts (54).


    Illustration 11g01215391

  12. Disconnect hose assemblies (55), (56), (57), and (58).


    Illustration 12g01215548

  13. Disconnect hose assemblies (59), (60), and (61).


    Illustration 13g01215552

  14. Disconnect hose assembly (62).


    Illustration 14g01215572


    Illustration 15g01215577

  15. Attach Tooling (A) and a suitable lifting device to main control valve (63). The weight of main control valve (63) is approximately 272 kg (600 lb).

  16. Remove bolts (64) from both sides of main control valve (63). Remove main control valve (63).

Installation Procedure

Note: Cleanliness is an important factor. Before the installation procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.




    Illustration 16g01215572

  1. Attach Tooling (A) and a suitable lifting device to main control valve (63). The weight of main control valve (63) is approximately 272 kg (600 lb).

  2. Position main control valve (63) in the machine.


    Illustration 17g01215577

  3. Install bolts (64) in order to install main control valve (63).


    Illustration 18g01215552

  4. Connect hose assembly (62).


    Illustration 19g01215548

  5. Connect hose assemblies (61), (60), and (59).


    Illustration 20g01215391

  6. Connect hose assemblies (58), (57), (56), and (55).


    Illustration 21g01215037

  7. Install bolts (54).


    Illustration 22g01215034

  8. Connect hose assemblies (53), (52), and (51).


    Illustration 23g01215018

  9. Install hose assemblies (50). Position harness assembly (26) and install cable straps (49).


    Illustration 24g01214995

  10. Connect hose assemblies (48), and (47). Install clip (46). Install cable straps (45).


    Illustration 25g01214977

  11. Connect hose assemblies (44), (43), (42), (41), and (40).


    Illustration 26g01214963

  12. Install tube assembly (39). Connect hose assembly (38). Connect hose assemblies (37), (36), (35), and (34). Connect tube assembly (33).


    Illustration 27g01214903

  13. Connect hose assemblies (32), (31), and (30). Connect tube assembly (29). Connect hose assemblies (28), and (27). Connect harness assembly (26).


    Illustration 28g01214609

  14. Connect hose assemblies (25), (24), (23), (22), (21), (20), (19), (18), (17), (16), (15), (14), (13), and (12).


    Illustration 29g01214599

  15. Connect hose assembly (11). Connect hose assembly (10). Install clips (9).


    Illustration 30g01214585

  16. Install panel (2). Close hood (1).

  17. Fill the hydraulic tank.

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