Troubleshooting
Symptom
Possible Cause
Corrective Action
Water leakage from under
manifold
Worn packing or cracked
plunger
Install new packing or plunger
Slight leak, oil leaking in the
area of the crankshaft
1. Worn crankshaft seal or
improperly installed oil seal
1.Remove oil seal retainer and install new oil
seal
2. Bad Bearing
2. Install new bearing
Water in crankcase
1. Humd air condensing into
water inside the crankcase
1. Change oil
2. Worn packing and/or
cracked plunger
2. Replace packing and/or plunger
Loud knocking noise in
pump
1. Cavitation or sucking air
1. Check that water supply is turned on
2.Broken or worn bearing
2. Replace bearing
Pump Servicing
Discharge Valve Removal
1. Remove the valve cap and inspect the
o-ring for damage and replace if neccessary.
2. Use a pair of needle nose pliers to remove
the check valve.
3. Use a small probe to move the poppet
up and down inside the valve to insure it is
function properly.
4. Remove any debris lodged between the
spring and poppet or the poppet and seat.
5. Inspect the seat o-ring for damage and
replace if damage is discovered.
Discharge Valve Installation
1. Insert the valve assembly squarely into the
valve port and firmly push it in using your
finger.
Should be quite snug when seated all of the
way.
2. Install the valve cap and torque it to down
221 ft. lbs.
