Manitowoc Published 05-03-17, Control # 228-03 8-7
16000 SERVICE/MAINTENANCE MANUAL UNDER CARRIAGE
Air Removal
To remove air, use the following procedure:
1. Close the valve finger-tight-only.
2. Position the pump higher than the cylinder. Position the
cylinder so the rod is down.
3. Operate the pump to fully extend the cylinder rod.
4. Open the valve and retract the cylinder rod to force oil
and trapped air back into the pump.
Repeat these steps until the cylinder operates smoothly.
Erratic operation indicates air in the system.
S135
S137
S138
Notch in Dipstick
(Enerpac Pump)
Hose
Cylinder
Vent/Fill Cap
(Simplex Pump)
Extend
Cylinder
Close
Valve
Open
Valve
Retract
Cylinder
Pump
OR
FIGURE 8-4
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