Bulldozer Control Valve - Disassemble
Disassembly Procedure
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Required Tools     | |||
Tool     | Part Number     | Part Description     | Qty     |
A     | 1P-0510     | Driver Gp     | 1     |
B     | 1P-1857     | Retaining Ring Pliers     | 1     |
Start By:
- Remove the bulldozer control valve. Refer to Disassembly and Assembly, "Bulldozer Control Valve - Remove" for the machine that is being serviced.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
- Remove three nuts (2) and cover (1) .
Note: The disassembly of the two-stem bulldozer control valve are similar to the disassembly of the three-stem bulldozer control valves. Only the three-stem control valve is shown.
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Illustration 1 | g00723677 |
- Separate valves (5), (3) and (6) from manifold (4). Remove O-ring seals (7). Remove shims (9) between each of the valves and manifold (4). Remove studs (8) .
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Illustration 2 | g00723680 |
- Do the following procedure to disassemble valve (3) and valve (5) :
- Remove plug (11), valve (10), spring (13) and springs (14) from body (12). Remove the O-ring seal from the plug.
Show/hide tableNOTICE Do not, at any time, mix the components etween the valve groups during the disassembly or the assembly.
- Remove bolts (15), retainer (17), guard (16) and filter (18) from body (12) .
Show/hide tableIllustration 4 g00723697
- Remove two bolts (19) and housing (21) .
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- Remove spool (20) from body (12) .
- Compress spring (22). Remove bolt (24) and spacer (23). Remove retainer (26), spring (22) and retainer (25) from spool (20) .
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- Remove valve (27) from body (12). Remove the three O-ring seals from the valve.
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- Remove seat (28) and ball (29). Remove the O-ring seal from the seat.
- If necessary, remove the seal from each end of body (12) .
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Illustration 3 | g00723694 |
- Do the following procedure to disassemble valve (6) :
- Remove plug (31), valve (30), spring (34) and spring (35) from body (32). Remove the O-ring seal from the plug.
- Remove plug (37), spring (36) and valve (35) from body (38). Remove the O-ring seals and the backup ring from the plug.
Show/hide tableIllustration 9 g00723709
- Remove body (38). Remove the O-ring seals and the backup ring from the body.
- Remove two bolts (41), retainer (39), guard (42) and filter (40) .
Show/hide tableIllustration 10 g00723711
- Hold retainer (45) in position with a press and Tool (A). Remove snap ring (43) with Tool (B) .
Show/hide tableIllustration 11 g00723715
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- Remove retainer (45) and spring (44) from housing (46) .
- Remove piston (49) and eight balls (47) from housing (46). Remove the washer from housing (46) .
Show/hide tableIllustration 13 g00723723
- Remove three bolts (48) and housing (46). Remove the O-ring seal from the housing.
- Remove O-ring seals (52) and (53) from the piston. Remove seals (50) and (51) from the piston.
Show/hide tableIllustration 14 g00723725
- Remove spool (54) from body (32) .
Show/hide tableIllustration 15 g00723729
- Compress spring (60). Remove shaft (58) and coupling (57) from spool (54) .
Show/hide tableIllustration 16 g00723732
- Remove retainer (56), spring (60), spacer (55) and retainer (59) .
- Remove valve (62) from body (32). Remove the O-ring seals from the valve.
Show/hide tableIllustration 17 g00723736
- Remove seat (61) and ball (63). Remove the O-ring seals from the seat.
- If necessary, remove the seals from each end of body (32) .
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Illustration 8 | g00723707 |
Caterpillar Information System:
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