307E2 Mini Hydraulic Excavator Machine Systems Main Control Valve - Disassemble Caterpillar


Main Control Valve - Disassemble
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1.1. Disassembly Procedure

Disassembly Procedure


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 1g06024366
The above graphic is provided as a point of reference.
(1) Outlet
(2) Auxiliary
(3) Auxiliary
(4) Blade
(5) Stick
(6) Bucket
(7) Left Travel
(8) Right Travel
(9) Boom
(10) Swing
(11) Inlet


    Illustration 2g06025078

  1. Remove nuts (12) and the washers. Remove outlet manifold (1) and the O-ring seals.


    Illustration 3g06025055

  2. Remove nuts (13) and solenoid assemblies (14).


    Illustration 4g06025084

  3. Remove auxiliary control valve (2) and the O-ring seals.


    Illustration 5g06024864

  4. Remove bolts (20) and cover (18). Remove O-ring seal (16). Remove check valve (15) and the O-ring seal. Remove bolts (21) and cover (19). Remove O-ring seal (17) and O-ring seal (22).

  5. Repeat Step 3 and Step 4 for auxiliary control valve (3).


    Illustration 6g06025333

  6. Remove blade control valve (4).


    Illustration 7g06025368

  7. Remove bolts (27) and lock washer (26). Remove cover (25) and O-ring seal (24). Remove check valve (23) and the O-ring seal. Remove bolts (30) and lock washer (31). Remove cover (29). Remove O-ring seal (28) and O-ring seal (32).

  8. Repeat Step 6 and Step 7 for stick control valve (5) and bucket control valve (6).


    Illustration 8g06025600

  9. Remove spacer (33) and the O-ring seals.


    Illustration 9g06025630

  10. Remove left travel control valve (7) and the O-ring seals.

  11. Remove right travel control valve (8) and the O-ring seals.

  12. Repeat Step 6 and Step 7 for left travel control valve (7) and right travel control valve (8).


    Illustration 10g06025644

  13. Remove spacer (34) and the O-ring seals.


    Illustration 11g06025695

  14. Remove boom control valve (9) and the O-ring seals.

  15. Repeat Step 9 and Step 10 for boom control valve (9) swing control valve (10).


    Illustration 12g06025705

  16. Remove rods, washers, and nuts (35) from inlet manifold (11).

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