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GLOW PLUG SYSTEM
Glow Plug
The glow plug is a self regulating type, consisting of
two metal heating element coils; a rush coil and a brake
coil, Fig. 2. The rush coil provides rapid heating of the
tip of the glow plug. The brake coil decreases current to
the glow plug by increasing resistance as the tempera-
ture rises, regulating the temperature of the glow plug.
Glow Plug Specifications
Rated Voltage
11V
Rated Current
9.5A
1.0 Ω
Normal Resistance
Remove Glow Plug
Disconnect glow plug wiring from connector.
1. Remove glow plug connector nuts and connector.
2. Remove glow plugs, Fig. 3.
Handle glow plugs with care. Do not drop. Do not
scratch heater section.
Test Equipment
The digital multimeter, Tool #19390 is required to test
the glow plug.
Testing Glow Plug
With meter selector switch in
continuous tone indicates continuity (complete circuit).
No tone indicates no continuity (incomplete circuit). An
incomplete circuit will be displayed as "OL."
1. Check glow plug for continuity as shown, Fig. 4.
a. If meter indicates NO continuity, replace glow
plug.
4
position, a
11
RUSH
BRAKE
COIL
COIL
Fig. 2 – Glow Plug
Fig. 3 – Removing Glow Plugs
Fig. 4 – Testing Glow Plugs
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