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Pump Power Head Replacement
311283H
13
Pump Power Head Replacement
Removal
1.
Relieve pressure
, page 5.
2. Remove hydraulic lines (100, 101) from head (75).
3. Loosen four mounting bolts (7) on the adapter
enough to lift and remove assembly.
4. Remove power head from unit.
Installation
1. Install power head on unit.
2. Tighten power head bolts (7). Torque bolts to 400 +
10 in-lb (45 + 1 N•m).
3. Attach hoses (100, 101) to head (75). Torque to 450
+ 10 in-lb (50.84 N•m).
4. To purge air from hydraulic lines, increase pressure
enough to start hydraulic motor stroking and allow
fluid to circulate for 15 seconds.Turn pressure
down. Turn prime valve horizontal (closed).
100
101
75
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7
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101
100
75
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