Troubleshooting
12
3A8564C
* To determine if fluid hose or gun is obstructed, follow
, page 9. Disconnect fluid hose
and place a container at pump fluid outlet to catch any fluid. Turn on air just enough to start pump. If pump starts
when air is turned on, the obstruction is in the fluid hose or gun.
Erratic or accelerated pump speed. Exhausted fluid supply.
Refill and prime.
Fluid is too heavy for pump priming. Use drain/purge valve. Use a ram.
See Supply Units Operation manual
313526.
Increase ram air pressure.
Held open or worn intake valve or
seals.
Clear valve. Replace seals.
Held open or worn priming piston.
Clear; service.
Worn packings in displacement
pump.
Replace packings.
Problem
Cause
Solution
