195
12） ENGINE GLOW PLUGS
(185366190)
Description
The engine glow plugs, 1, are located on
the right side of the engine cylinder head,
near the fuel injectors.
The glow plugs are used to preheat the air in
the pre-combustion chamber. This aids in the
starting of the engine when cold.
Removal
1. Disconnect the negative ( － ) battery
cable from the battery.
2. Remove the three (3) nuts, 1, and
washers securing the electrode bar, 2, to
the glow plugs.
3. Remove the glow plugs from the engine
cylinder head.
Engine Glow Plug Testing
1. Clean carbon from the sheath end of the
glow plug.
NOTE:
Do not test resistance using the glow plug
sheath.
2. Using an ohmmeter, touch one test probe
to the glow plug electrode. Touch the
other test probe to the glow plug body.
3. Observe the ohmmeter. A resistance
reading of 1.0 ohms maximum is normal
for the ST tractor, glow plug. If the
resistance is too high, the glow plug is
defective and needs replaced.
Installation
1. Thread the glow plugs into the engine
cylinder head. Torque each glow plug to
15-20 N･m {1.5～ 2.0 kgf･m}.
2. Install the electrode bar and the washers
onto the glow plugs. Secure with the
three (3) nuts.
3. Connect the negative (－ ) battery cable
to the battery.
542Y
543Y
544Y
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