Testing Glow Plugs; Testing Oil Pressure - Westerbeke 5.5 EGCD Operator's Manual

ENGINE ADJUSTMENTS
. GLOWPWGS ·
The glow plugs are wired through the preheat solenoid.
When PREHEAT is pres$ed at the control panel tbis solenoid
should "click" on and the glow plug should begin to get hot
INSPECTION.
To inspect the plug, remove the electrical tennina). connec-
tions, then unscrew or unclamp each plug from tqe cylirider
bead.
Thoroughly clean each plug's tip and
threads
W,ith
a
soft brush and cleaning
solution to remove
an
the c8rbon and
oil"
deposits. While cleaning, examine the tip for
wear
and
bum erosion; if it has eroded too
much,
replace the ·plug.
TESTING·
An accurate way to test glow plugs is with an ohmmeter.
Touch .. one prod to -the glow plug's wire connection,.
~d
the
other to the body of the glow plug, as shown. A
good ·glow ·
plug will have a 1.0 - 1.5 ohm resistance. This meth04 can: be
used with the plug in or out of the engine. You can also use
an multimeter to
test
the power drain (8 - 9 amps per plug).
A
WARNING:
These glow plugs will become very hot
to
the touch. Be careful not
to
burn your fingers when
testing the plugs.
GLOW PLUGS
Re-install the plugs
in the engine and test them agaiil. The
plugs should get very hot
(at
the tetminal end) within 7 to 15
seconds. If the plugs don't heat up quickly, check for a short
circuit When reinstalling the glow plugs, use anti-seize
comp9und on the threads.
A
WARNING:
Do not keep a glow.plug on for mare
than 30 seconds.
GLOW PLUG TIGHTENING TORQUE
1.0- 1.5 M-KG (7 -11 FT-LB)
· USING A
·TEST UGHT
OIL PRESSURE
To test the oil pressure, remove the oil pressure sender, then
install a mechanical oil pressure gauge in it's place. After ·
wanning up
the
engine, set the engine speed at 1800 rpm and , .
read the oil pressure gauge. ·
Oil Pressure 35- 551biin• {2.5- 3.8 kg/em')
, LOW OIL PRESSURE
. A gradual loss of oil pressure usually indicates a worn bear- :
ings. A rapid loss of oil pressure indicates a specific bearing ·
failure. For additional information on low oil pressure
read-
ings, see the ENGINE TRO_UBLESHOOTING .chart.
.
TESTING OIL PRESSURE ·
OIL GALLERY
OIL PRESSURE SWITCH
The
oil pressure
safety
shut-down
switch
is
located at the
front of the
engine. Adjacent
to the switch
is
an
access port
l/8npt that will allow for the connecting of a mechanical oil
pressure gauge when checking for proper oil pressure during
engine
operation.
/-.y-/WESTERBEKE
l
!Engines. ~ Generato.rs
25.