Isuzu C240 - Hot Plug

TCM. SHOP MANUAL
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SJ
HOT PLUG
Hot Plug Dey
1. Clean the cylinder head lower face, taking care not
to damage the hot plug surfaces.
2. Use a straight edge and a feeler gauge to measure
the hot plug depression in a straight line from the
No. 1 hot plug to the No. 4 hot plug.
If the measured value exceeds the specified limit,
the hot plugs must be replaced.
Hot Plug Depression mm (in)
[+]
Limit
0.02 (0.0008)
Combustion Chamber Inspection
1, Remove the carbon adhering to the inside of the
combustion chamber. Take care not to damage the
hot plug fitting positions.
2, Inspect the combustion chamber, the hot plug hole,
and the hot plug machined faces for cracking and
other damage.
If cracking or damage is present, the cylinder head
must be replaced.
Note:
Be absolutely certain that there are no scratches or
protuberances on the combustion chamber surfaces
which will be in contact with the hot plug after it is
installed. These flaws will prevent the hot plug from
seating correctly.
Hot Plug Replacement
Hot Plug Removal
1, Insert a 3.0 - 5.0 mm (0.12 — 0.20 in) diameter brass
bar into the nozzle holder fitting hole until it makes
contact with the hot plug.
2. Lightly tap the bar with a hammer to drive the hot
plug free.
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