Testing Oil Pressure; Oil Pump (Rotor Type) - Westerbeke Universal M-50 Operator's Manual

WBRICATION SYSTEM
TESTING OIL PRESSURE
1. Remove the oil switch and set a pressure gauge.
2. Start the engine. Measure the oil pressure both at idling and at the rated speed.
3. If the measurement is not within the reference value, check the oil pump, oilways, oil
clearances and pressure regulating valve.
NOTE FOR MEASURING: Supply the specified amount of recommended oil. The oil filter must not
be clogged or broken. See engine specifications.
OIL PUMP (ROTOR TYPE)
Checking Rotor Lobe Clearance
1. Insert a feeler gauge into the gap between the inner and outer rotors and measure the
clearance.
2. If the clearance exceeds the allowable limit, replace. See engine specifications.
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