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3-35
3
DE301A
Assembling Pre-Combustion
Chambers/Glow Plugs
1. Carefully clean all carbon and cleaning residue
from the sealing surfaces of the pre-combustion
chambers/cylinder head being careful not to nick
or scratch the cylinder head.
NOTE: Non-caustic solvents may be used to
assist in carbon removal. Dry with compressed air.
2. Making sure any spacers/shims are correctly
installed, place the pre-combustion chamber into
the cylinder head with the glow plug opening
directed toward the glow plug bore.
NOTE: To simplify installation/orientation of the
pre-combustion chamber, install the chamber on
the removal tool; then place into the head. Remove
the tool after completing step 3.
DE326A
DE321A
3. Insert the Pre-Combustion Chamber Index Tool
into the glow plug bore while slightly shifting the
chamber until the alignment tool properly engages
the opening in the chamber; then completely
thread the tool in and tighten securely.
DE322A
4. If the removal tool was utilized, remove it from
the chamber. Install the pre-combustion chamber
ring nut and using the Pre-Combustion Chamber
Ring Nut Tool, tighten the ring nut to an initial
torque of 72 ft-lb; then to a final torque of 130
ft-lb.
DE311A
5. Remove the Pre-Combustion Chamber Index Tool
and repeat steps 2-4 for the second pre-combustion
chamber; then install the glow plugs and tighten to
18 ft-lb.
6. Install the unit injectors (see Section 4).
7. Install the governor linkage (see Speed Governor
in this sub-section).
! WARNING
Always wear safety glasses when working with com-
pressed air.
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