TROUBLE SHOOTING YOUR PUMP
PROBLEM
CAUSE
SOLUTION
Loss of pump performance
Slide Valve not all the way pushed in or
Put slide valve all the way in
out.
appropriate position. Tighten
handle nut if valve moves during
operation.
Leak in system.
Check all connections
for leaks.
A ball trap is stopping air flow
Drain ball trap and/or empty tank.
Air filter and/or strainer are plugged up.
Check the filter and/or screens.
Clean or replace if necessary.
A valve is open that should be closed.
Check all valves for correct
position. Make sure flush valve is
closed.
Plumbing and/or various other attachments
Tighten all plumbing and anything
are loose.
else connected to the system.
Motor is running too slow.
Adjust throttle so that the pumps
are running between 1200-1750
rpm.
Belt is slipping due to lack of tension on
Adjust motor base to allow for 1/2”
belt.
of free play at center of pulleys.
Relief valves are faulty.
Check relief valves and reset if
necessary.
One or more pump vane is sticking or is
Flush out pump and replace vanes
worn.
if necessary.
Piston cups inside of slide valve are worn out. Install new piston cups.
Pulley is not secure to shaft.
Re-secure the pulley to shaft using
set hole.
Blockage within plumbing.
Locate and remove the substance
causing blockage within plumbing.
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