Yamaha PW3028A, Руководство по обслуживанию

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11
DIAGNOSIS AND MAINTENANCE
Oil leak

Crankcase oil seals.

Crankshaft oil seals
and o-rings.

Drain plug.

Bubble gauge.

Bearing cover.

Filler cap.

Replacing oil.

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

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.
Pump runs extremely
rough

Inlet conditions.

Pump valves.

Pump seals.

Restricted inlet or air entering the inlet
plumbing.

Stuck inlet/discharge valves.

Leaking V-Packing, Hi-Pressure or
Lo-Pressure seals.

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.
Premature seal failure

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 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.