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 TM 55-1905-219-14-5
3-89.1. CYLINDER HEAD - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
ASSEMBLY
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" (.3175 cm) diameter brass rod to a brush. After cleaning, dry the
cylinder head with compressed air.
CAUTION
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 lintless cloth so
that sealant will not be washed into the fuel and oil passages.
23. Cylinder
a. Pipe
Install one plug.
Tighten to (18-
head
plugs
22 lb-ft),
(22)
(24.4-29.8 Nm).
b. Pipe
Install five plugs.
Tighten to (14-
plugs
16 lb-ft),
(21)
(18.9-21.7 Nm).
c. Pipe
Install two plugs.
Tighten to
plugs
flush or 1/8
(18)
inch recessed.
d. Pipe
Install seven plugs.
Tighten to (14-
plugs
16 lb-ft),
(14)
18.9-21.7 Nm).
e. Plugs
Install four plugs.
(17)
3-1484
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