DIAGNOSIS AND MAINTENANCE
Oil leak
Crankcase oil seals.
Crankshaft oil seals
and o-rings.
Drain plug.
Bubble gauge.
Bearing cover.
Filler cap.
Replacing oil.
Pump runs extremely
rough
Inlet conditions.
Pump valves.
Pump seals.
Premature seal failure
Worn crankcase oil seals.
Worn crankshaft oil seals or o-rings on
bearing cover.
Loose drain plug or worn drain plug
o-ring.
Loose bubble gauge or worn bubble
gauge gasket.
Loose bearing cover or worn bearing
cover o-ring.
Loose filler cap or excessive oil in
crankcase.
Loosen filler cap
Restricted inlet or air entering the inlet
plumbing.
Stuck inlet/discharge valves.
Leaking V-Packing, Hi-Pressure or
Lo-Pressure seals.
Scored plungers.
Over pressure to inlet manifold.
Abrasive material in the water being
pumped.
Excessive pressure and/or temprature
of pumped water
Running pump dry.
Starving pump of adequate water.
Eroded manifold.
Replace crankcase oil seals.
Remove bearing cover and replace
o-rings and/or oil seals.
Tighten drain plug or replace o-ring.
Tighten bubble gauge or replace
gasket.
Tighten bearing cover or replace
o-ring.
Tighten filler cap. Fill crankcase to
specified capacity.
Fill with CAT oil to red dot on the
bubble gauge.
Correct inlet sized plumbing. Check
for air tight seal.
Clean out foreign material or install
new valve kit.
Install new seal it. Increase frequency
of service.
Replace plungers.
Reduce inlet pressure per
specifications.
Install proper filtration at pump inlet
and clean regularly.
Check pressure and inlet water
temperature.
DO NOT RUN PUMP WITHOUT
WATER.
Inadequate water supply, minimum
35 PSI and hose size 3/4"-5/8".
Replace manifold. Check water
compatibilty.
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