Thermostat; Air Intake Filter/Silencer - Westerbeke 5.0Kw BCDR Operator's Manual

ENGINE COOLING CIRCUIT
TO COOLANT
; RECOVERY TANK
FROM COOLANT
RECOVERY TANK
COOLANT EXPANSION
COOLANT RETRACTION
NOTE:
Periodically check the condition of the radiator
pressure cap. Ensure that the upper and lower rubber seals
are in good condition and check that the vacuum valve opens
and closes tightly. Carry a spare cap.~ _ _
RUBBER
. AIR INTAKE FILTER/SILENCER
There is a replaceable paper intake filter that should be
inspected every 100 hours of unit operation or more fre-
quently in dusty operating conditions. Contaminants in the
filter can be shaken out or removed with the aid of com-
pressed air. However, if this can not be accomplished the ele-
ment/filter must be replaced.
NOTE:
T9 operate efficiently a diesel
~ngine
must intake a
continuous volume of clean air. Hard starting, an erratic idle,
and black exhaust smoke are all symptoms of a restricted air
intake.
AIR INTAKE
SILENCER·
~--AIR
SCREEN
. FILTER
THERMOSTAT
A thermostat, located near the front of the engine, controls
the engine's coolant temperature, as the coolant continuously
flows through the engine's closed cooling system .. When the
engine is first started and the thermostat is closed, engine
coolant by passes the thermostat to provide proper circulation
and cooling via a by-pass hose located between the circulat-
ing pump and below the thermostat. As the engine coolant
reaches operating temperature, the thermostat gradually
opens to allow coolant to flow through it. The thermostat is
accessible and can be checked. cleaned or replaced as
needed. Carry a spare thermostat and housing gasket.
15
To Replace the Thermostat
Remove the cap screws and disassemble the thermostat
housing as shown. When installing the new thermostat and
gasket, apply a thin coat of sealant on both sides of the
gasket before pressing it into place. Do not over-tighten the
cap screws.
Roo the engine and check for normal temperatures and that
there are no leaks at the housing.
~_.-.,-.rfiJ
GASKET
III
II
,
COOLANT
TEMPERATURE.
SENDER
SEAL WITH HI-TACK