315C Excavator Machine Systems Main Control Valve - Remove Caterpillar


Main Control Valve - Remove
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1.1. Removal Procedure

Removal Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     138-7573     Link Bracket     2    
ZZ     6V-9508     Face Seal Plug     44    
6V-9829 Cap Assembly     44    
6V-9509 Face Seal Plug     6    
6V-9830 Cap Assembly     6    
6V-9510 Face Seal Plug     3    
6V-9831 Cap Assembly     3    
6V-9511 Face Seal Plug     13    
6V-9832 Cap Assembly     13    
6V-9512 Face Seal Plug     3    
6V-9833 Cap Assembly     3    

Start By:

  1. Release hydraulic system pressure. Refer to Disassembly and Assembly, "Hyrdraulic System Pressure - Release".

Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.

Note: A hydraulic oil sample should be obtained before any maintenance is performed in order to establish the system contaminant level. Refer to Operation and Maintenance Manual, "Sampling Interval and Location of Sampling Valve".


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, "AVSpare Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on AVSpare products.

Dispose of all fluids according to local regulations and mandates.



NOTICE

Keep all parts clean from contaminants.

Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.

To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.

Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.


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

At operating temperature the implement hydraulic oil tank is hot and under pressure. Hot oil can cause burns.

To prevent possible injury, release the pressure in the implement hydraulic system before hydraulic lines or components are disconnected or removed.

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  1. Drain the oil from the hydraulic oil tank into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the procedure. The capacity of the hydraulic tank is approximately 105 L (27.7 US gal).

    Note: Put identification marks on all of the hose assemblies that are connected to the main control valve. Identification marks are for installation purposes and for the purpose of orientation during the installation procedure.




    Illustration 1g00804724

    This view is from the top of the main control valve.

  1. Disconnect all of the hose assemblies and all of the tube assemblies from the top of the main control valve.

    Note: Not all of the hoses need to be disconnected in order to remove the main control valve. Some of the hoses are routed from one location to another location on the main control valve.




    Illustration 2g00804786

  1. Loosen the bolt and clip (2) that fastens tube assemblies (1) on the right hand frame.



    Illustration 3g00804789

  1. Remove the bolts and bracket (3). Slide tube assemblies (1) away from the main control valve.



    Illustration 4g00804792

  1. Remove sheet (4) for easier access to the main control valve.



    Illustration 5g00804838

  1. Disconnect harness assemblies (5) .

  1. Disconnect hose assemblies (7) from the main control valve.

  1. Remove bracket (6) and hose assemblies (7) from the main control valve.



    Illustration 6g00804881

  1. Remove the bolts and move check valve (8) away from the main control valve.



    Illustration 7g00804910

  1. Install Tooling (A) and a suitable lifting device onto the main control valve.



    Illustration 8g00804888

  1. Remove panel (9) that is located under the main control valve.

    Note: The hydraulic hose assemblies that are located under the main control valve can be removed with the engine in chassis. However, the degree of difficulty will be greatly reduced for the installation of the hydraulic hose assemblies if the engine is removed.




    Illustration 9g00804929

    The engine is removed in this side view of the hydraulic hose assemblies under the main control valve.




    Illustration 10g00804966

    This view of the hydraulic hose assemblies under the main control valve is from the bottom of the machine.

  1. Remove the remaining hydraulic hose assemblies from the bottom of the main control valve.

    Note: Carefully inspect the main control valve for any hydraulic hose assemblies or for any harness assemblies that must be disconnected prior to removal.

  1. Remove bolts (10) .

  1. Remove the main control valve from the machine. The weight of the main control valve is approximately 204 kg (450 lb).

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