Westerbeke WPDS-20 Technical Manual page 54

A31
AIR INTAKE SILENCER
The air intake silencer is located behind the heat exchanger and exhaust
manifold. The intake is covered by a metal screen which does not have to be
replaced. Depending on operating conditions check to see the screen is clear when
performing maintenance checks. If clogged it will impair proper engine operation.
Clean screen with fuel oil and lint free cloth.
LUBRICATING OIL DIPSTICK
The engine oil pan contains a boss on either side of the engine to accept
the dipstick assembly. The opposite side contains a plug. Depending on your
application they may be reversed if desired.
LUBRICATING OIL LINES
Note the positioning of the lines before removing them for any service as
they must be replaced exactly as originally installed. If reversed the filter
will not function as it is· designed to pass and filter in only one direction.
SERVICE HINTS
1. When replacing the heat exchanger or if you should have to remove the air
intake silencer it is easier to remove the exhaust Inanifold assembly with
these attached rather than each part individually.
2. The zinc is located on the bottom of the heat exchanger at the forward
end of the engine.
3. The rear most petcock on the heat exchanger is the raw water drain and
the one forward of that is the fresh water.