61
DE301
5. Slowly release the valve spring compressor while
making sure the valve keepers engage the groove in
the valve stem.
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 cham-
ber 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.
! WARNING
Always wear safety glasses when working with com-
pressed air.
