938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Machine Systems Main Control Valve - Install Caterpillar


Main Control Valve - Install
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1.1. Installation Procedure

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
8S-7630  Stand 
8S-7631 Tube 
8S-7615 Pin 
8S-8048 Saddle 
138-7575  Link Bracket 


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, PERJ1017, "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 1g00984335

  1. Attach Tooling (B) and a suitable lifting device onto main control valve (23). The weight of main control valve (23) is approximately 34 kg (75 lb). Position main control valve (23) and install bolts (24).


    Illustration 2g00984332

  2. Position clamps (22) and install bolts (21). Connect tube assemblies (18) and (20). Connect fitting (19).


    Illustration 3g00984330

  3. Position clamp (17) and install bolts (16).

  4. Repeat Step 3 for the other side.


    Illustration 4g00984322

  5. Connect hose assemblies (14) and (15). Connect fitting (13).


    Illustration 5g00984320

  6. Connect hose assemblies (11) and (12). Connect fitting (10).


    Illustration 6g00984315

  7. Connect hose assemblies (8) and (9). Connect tube assemblies (5), (6), and (7).


    Illustration 7g00984314

  8. Position clamps (4) and install bolts (3).


    Illustration 8g00984591

  9. Position cover (2) and install nuts (1).

  10. Fill the hydraulic system with oil. Refer to Operation and Maintenance Manual, "Capacities (Refill)" and Operation and Maintenance Manual, "Lubricant Viscosities".


    Illustration 9g00277573

  11. Raise the lift arms off Tooling (A). Remove Tooling (A) and lower the bucket to the ground.

  12. Release the parking brake.

End By:

  1. Separate the steering frame lock. Refer to Disassembly and Assembly, "Steering Frome Lock - Seperate and Connect".

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