Troubleshooting

*Diagnosis & Maintenance*
*Problem*	Probable Cause		*Solution*
Low Pressure		Worn or Plugged Nozzle	*Replace or clean nozzle, of proper size*
		Belt Slippage	Tighten or replace belt
		Air leak in inlet plumbing	Disassemble, reseal and reassemble inlet
		Pressure gauge inoperative or not registering accurately	Check with new gauge; replace worn or damaged gauge
		Relief / Unloader valve stuck, partially plugged or improperly adjusted; valve seat worn	Repair /replace and adjust relief / unloader valve; check for worn and dirty valve seats
		Inlet suction strainer clogged or improper size	Clean, use adequate size, check more frequently
		Worn seals, abrasives in pumped fluid or severe cavitation, inadequate water supply	Install and maintain proper filter, replace seals, check inlet water supply, Max 6 inch inlet vacuum
		Fouled or dirty inlet or discharged valves	Clean inlet and discharge valve assemblies
		Worn inlet or discharge valves	Replace worn valves
		Leaky discharge hose	Replace discharge hose
*Pump runs extremely rough; pressure very low*		Restricted inlet or air entering the inlet plumbing	*Proper size inlet plumbing; check for air tight seal at fittings & filter*
		Inlet restrictions and / or air leaks, stuck inlet or discharge valves	Replace worn seals, clean out material in valves or replace worn valves.
		Plugged inlet filter	Clean or replace filter

Water leakage from under the manifold	Worn inlet seals, cracked plunger	Replace seals, install new plunger
Oil leaking in the area of crankshaft	Worn crankshaft seal, bearing or case o-ring	Replace crankshaft seal, bearing or case o-ring
Oil leaking in the area of crankshaft	Bad Bearing	Replace Bearing
Oil leaking between crankcase and pump section	Worn crank case oil seals	*Replace crankcase oil seals*
Excessive play in the end of the crankshaft	Worn bearing	Replace ball bearing

Water in crankcase	May be caused by humid air condensing into water inside the crankcase	Change oil at 3 month or 500 hour intervals call 1-800-338- 7373 for Pump Oil Viscosity
Water in crankcase	Worn or improperly install inlet water seals	Replace inlet water seals
Oil leaking at the rear portion of the crankcase	Damaged or improperly installed sight glass or crankcase rear cover gasket and drain plug gasket	*Replace sight glass, crankcase cover gasket or drain plug gasket*
Loud knocking noise in pump	Pulley loose on crankshaft	Check key and tighten set screw
Loud knocking noise in pump	Broken or worn bearing	Replaced bearing
Strong surging at the inlet and low pressure discharge	*Foreign particles in the in let or discharge valve or worn inlet and / or discharge valves*	Replace worn valves, check supply tank for contamination, install and regularly clean filter, never pump abrasive fluids

For Service Call