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ENGINE ADJUSTMENTS
GLOW PLUGS
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
~e
cylirider
bead. Thoroughly clean each plug's tip and threads
W,ith
a
soft brush and cleaning solution to remove
an
the carbon and
o]J
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 gocid·glow ·
plug
will
have a 1.0- 1.5 ohm resistance. This meth6c;l 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 bum 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 terminal end) within 7 to 15
seconds. If the plugs don't beat up quickly, check for
a
shoit
circuit When reinstalling the glow plugs, use anti-seize
comppund on the threads.
.
.,
..
A
WARNING:
Do not keep a g/ow.plug on
tor
more
than 30 seconds.
GLOW PLUG nGHTENJNG TORQUE
1.0 ·1.5 M-KG (7 -11 Ff-LB)
TIP
USING A
·TEST LIGHT
OIL PRESSURE
To test the oil pressure, remove the oil pressure sender, thert
install a mechanical. oil pressure gauge in it's place. After
warming up the engine, set the engine speed at 1800
rpm
and
read the oil pressure gauge.
Oil Pressure 35 - 55 lb)in
2
(2 .5 • 3.8 kg/cm
2 )
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 infonnation on low oil pressure read-
ings, see the ENGINE
TROUBLESHOOTING 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
1/Snpt that will allow for the connecting of a mechanical oil
pressure gauge when checking for proper
oil
pressure during
engine operation .
+
. Engines & GeneriJJors.
25
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Troubleshooting
