Service Repair Manual
Models
329DL EXCAVATOR
Note: Cleanliness is an important factor. Before the disassembly procedure, clean the exterior of
the component . Cleaning will prevent dirt from entering the internal mechanism.
Note: Only the right pump control is equipped with the proportional reducing valve. The left
pump control starts with Step 4.
Illustration 1
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1. Remove bolts (2) , pump control (1) , and fitting (3) .
Illustration 2
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Right Pump Only
2. Remove bolts (4) . Remove proportional reducing valve (5) from pump control (1) .
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329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
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Illustration 3
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Right Pump Only
3. Remove O-ring seal (9) , O-ring seal (8) , O-ring seal (7) , and O-ring seal (6) from the
proportional reducing valve.
Illustration 4
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4. Remove nut (10) from the pump control.
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329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
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Illustration 5
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5. Measure the length of screw (13) for installation purposes. Remove screw (13) . Remove
bolts (11) . Remove cover (12) from the pump control.
Illustration 6
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6. Remove stopper (14) from the pump control.
Illustration 7
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7. Remove O-ring seal (15) and backup ring (16) from the stopper.
8. Repeat Step 4 through Step 7 for the other side of the pump control.
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329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
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Illustration 8
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9. Place the pump control in a soft jawed vise. Support pin assembly (17) . Remove piston (18)
from the pump control. Remove pin assembly (17) from the pump control.
Illustration 9
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10. Remove dowel pin (19) from the pin.
Illustration 10
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329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engin