Engine Adjustments; Adjusting The Drive Belt; Oil Pressure - Westerbeke 3.0 BPMG Operator's Manual

ENGINE ADJUSTMENTS
ADJUSTING THE DRIVE. BELT
The engine's drive belt is located under the engine. To
access the belt, for inspection and/or adjustment, remove
the cover as shown. Inspect the belt for wear along the edges
and for proper belt tension (belt should be tight).
The belt tension can be checked by meassming the
spling length. 11/4ln (31.79mm)
r-~
-r->=:::::::µ..
To set the spring tension at 1-1/4", release the jam nut and
use a rod such as an allen wrench to tum the adjusting: nut (as
shown) to tighten or loosen the spring tension, which in tum
adjusts the tension on the belt.
COVER
. IT IS NORMAL FOR SOME BELT
DUST TO ACCUMULATE IN THE
ENGINE PAN, SIMPLY WIPE CLEAN
BElT ASSEMBi:.Y VIEWED
FROM
BELOW
*
IMPORTANT:
REFER TO THE WESTERBEKE SERVICE
BULLETIN (LAST PAGE IN THIS MANUAL) FOR THE
ADDITION OF A SPACER ON THE 3.0BCG MODEL.
SHEAVE ARRANGEMENT
VIEW FROM UNDER BASE FRAME
The Iub1icating system is a pressure feeding system using an
oil pump. The engine oil is drawn from the oil sump by the
oil pump, which drives the oil, under pressure, through the
oil filter and various lubricating paits in the engine. The oil
then returns to the oil sump to repeat the continuous cycle.
When the oil pressure exceeds the specified prei;sure, the oil
pushes open the relief valve in the oil pump and returns to
the oil sump, keeping the oil pressure within it's specified
range.
TESTING OIL PRESSURE
To test the. oil pressure, remove the oil switch and install a
mechanical oil pressure gauge in it's place, it will be
necessary to ·connect the two switch wires -together for the
engine to run. After warming up the engine, with tlie engine
speed at 2200 rpm, read the oil pressure gauge.
Oil PRESSURE: between 30 and 40 psi at 2200 rpm
NOTE: A newly starter (cold) engine may have an oil
pressure up to 40 psi. A wanned engine can have an oil
pressure as
low
as 30 psi. Oil pressure
will
Val)I
depending
on the load placed on the generator.
OIL PRESSURE SWITCH/SENSOR
The generator is fitted with an oil pressure shutdown
switch. Should the engine's oil pressure drop below the safe
minimum, the switch will shut the engine down to prevent
damage by interrupting the DC voltage to the ignition coil.
NOTE: 77w specified minimum oil pressure is
5 psi. A gradual
loss of oil pressure usually indicates worn bearings. For
additional information
on low oil
pressure reading.1~ see the
ENGINE TROUBLESHOOTING
chart.
lw,WESTERBEKE
Enaines
&
Generators
'25.