TM 9-2330-275-14&PTable 4-1. Unit Troubleshooting Chart (con’t).HYDRAULIC SYSTEM (con’t).9. PUMP PISTON RAISES BY ITSELF UNDERPRESSURE.Initial Setup:Equipment Conditions:Tools and Test Equipment:l Dolly set parked on level surface withGeneral mechanic’s tool kithandbrakes applied (para 2-2).Common no. 1 shop setRemove hydraulic pump from dolly (para 4-75,4-78, or 4-81). Remove components of pumpvalve from hydraulic pump. Clean componentsof hydraulic pump valve. Clean and seat ballvalves (para 4-76, 4-79, or 4-82). Install hy-draulic pump on dolly (para 4-75, 4-78, or 4-81).(para 4-75, 4-78, or 4-81).END OF TASK4-27
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