Page No. 11
Issue Date: Rev 14 28 May 2012
Operating Instructions Form No. 102842
TROUBLESHOOTING GUIDE
WARNING
To help prevent personal injury, always release pump pressure and disconnect hose(s) from
pump before making repairs.
Refer to the appropriate pump parts list during troubleshooting. Repairs must be performed in a dirt-
free environment by qualied personnel familiar with this equipment..
PROBLEM CAUSE SOLUTION
Pump losing pressure. 1. System components
leaking.
1. Repair or replace as
necessary.
2. Directional control valve
leaks or not adjusted
properly.
2.* Reseat, repair, or replace
directional control assembly
and correctly adjust.
3. Fluid leaking past outlet
check seat(s).
3.* Check for dirt. Reseat pump
body and/or replace
poppet(s) or ball(s).
Handle rises after each
stroke.
1. Fluid leaking past outlet
check seat(s)
1.* Check for dirt. Reseat pump
body and/or replace
poppet(s) or ball(s).
Pump not delivering uid. 1. Low uid level in reservoir. 1. Check uid level per
instructions.
2. Intake lter is dirty. 2. Remove reservoir and
clean.
3. Seats worn and not seating
properly.
3.* Repair seats or replace
pump body.
Pump does not reach full
pressure.
1. Low uid level in reservoir. 1. Check uid level per
instructions
2. System components
leaking.
2. Repair or replace as
necessary.
3. Directional control valve
leaks or not adjusted
properly.
3.* Reseat, repair, or replace
directional control assembly
and correctly adjust.
4. Improperly adjusted relief
valve.
4.* Readjust.
5. Fluid leaking past inlet or
outlet checks or high
pressure piston seal
damaged.
5.* Reseat or repair inlet or
outlet checks or replace
high pressure piston seal.
Pump handle can be pushed
down (slowly) without rais-
ing the load.
1. Inlet checks are not seating. 1.* Check for dirt and/or reseat
valve seats.
2. Damaged piston assembly
or piston seals leaking,
2. Damaged piston assembly
or piston seals leaking.