D11R Track-Type Tractor Machine Systems Caterpillar

Disassembly Procedure

Start By:

1. Remove the pilot control valve.

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Illustration 1	g00558151

1. Remove bolts (5). Separate valve body (1), bulldozer tilt control valve (4), ripper lift control valve (2), ripper tilt control valve (3) and manifold (6) .

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Illustration 2	g00558152

Note: The bulldozer tilt control valve, the ripper lift control valve and the ripper tilt control valve are disassembled in the same way. Follow steps 2 through 7 in order to disassemble the control valves.

2. Remove three O-ring seals (8) and three O-ring seals (9) from the valve body.

3. Remove housing (7) from the valve stem and the valve body.

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Illustration 3	g00558153

4. Remove O-ring seal (10) and seal (11) from housing (7) .

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Illustration 4	g00558154

5. Remove housing (12) from the valve body. Remove the O-ring seal from housing (12) .

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Illustration 5	g00558155

6. Remove valve stem (13) from the valve body.

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Illustration 6	g00558156

7. Remove retainer (16), spring (15) and retainer (14) from the end of valve stem (13). If necessary, remove plug (17) and the O-ring seal from the end of valve stem (13). Remove plug (17) and the O-ring seal from the valve stems of the ripper tilt control valve and the ripper lift control valve.

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Illustration 7	g00558157

8. Remove plug (18) and the O-ring seal from valve body (1) .

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Illustration 8	g00558158

9. Remove spring (20) and valve stem (19) from valve body (1) .