Troubleshooting
3A6980A 13
Troubleshooting
1. Follow the Pressure Relief Procedure, page 10.
2. Check all possible remedies in the Troubleshooting
Chart before disassembling the pump.
Problem Cause Solution
Ram will not raise or lower. Closed air valve or clogged air line. Open, clear.
Not enough ram air pressure. Increase ram air pressure.
Worn or damaged piston. Replace.
Hand valve closed or clogged. Open, clear.
Ram raises and lowers too fast. Air pressure is too high. Decrease.
Travel rate is not properly adjusted. Move the director valve handle
further open for faster travel.
Move the director valve less open for
slower travel.
Air leaks around cylinder rod. Worn rod seal. Replace.
Fluid squeezes past ram plate
wipers.
Ram air pressure too high. Decrease ram pressure.
Worn or damaged wipers. Replace.
Pump will not prime properly or only
pumps air.
Closed air valve or clogged air line. Open, clear.
Not enough air pressure. Increase air pressure.
Worn or damaged piston. Replace. See pump manual.
Hand valve closed or clogged. Open, clear.
Hand valve is dirty, worn, or
damaged.
Clean, service.
Air assist valve will not hold drum
down or push plate up.
Closed air valve or clogged air line. Open, clear.
Not enough air pressure. Increase air pressure.
Valve passage clogged. Clean.
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