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 TM 55-1905-219-14-6
3-164.1. CYLINDER HEAD - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
ASSEMBLY
Wear protective eye goggles when using compressed air.
Apply a small amount of dual-purpose sealer to the
threads of the plugs only. Work the sealant into
the threads and wipe the excess with a clean lint-
free cloth so that the sealant will not be washed
into the fuel and oil passages.
NOTE
If a service replacement cylinder head is to be
installed, it must be thoroughly cleaned of all
rust preventive compound, particularly inside the
integral fuel manifolds, before installing the plugs.
A simple method of removing the rust preventive
compound is to immerse the head in solvent, oleum,
or fuel oil. Then scrub the head and go through
all of the openings with a soft bristle brush. A
suitable brush for cleaning the various passages in
the head can be made by attaching a 1/8 inch (.317
cm) diameter brass rod to a brush. After cleaning,
dry the cylinder head with compressed air.
24.
Cylinder
a. Pipe
Install one plug.
Tighten to 18-
head
plug
22 lb-ft (24.4-
(19)
29.8 Nm).
b. Pipe
Install five plugs.
Tighten to 14-
plugs
16 lb-ft (18.9-
(18)
21.7 Nm).
c. Pipe
Install two plugs.
Tighten to
plugs
flush or 1/8
(15)
inch recessed.
d. Pipe
Install seven plugs.
Tighten to 14-
plugs
16 lb-ft (18.9-
(12)
21.7 Nm).
3-2740
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