CLEANING (SHEET 2 OF 2)
Compressed air used for cleaning purposes will not exceed 30 psi. Use
only with effective chip guarding and personal protective equipment
(goggles/shield, gloves, etc). Failure to do so could cause serious
injury to eyes and possible blindness.
If you hurt your eyes or if a
foreign object is blown into your eyes, seek medical attention
(3) Clear cylinder head bores and passages using compressed air.
Cover piston tops with clean cloths and scrape all gasket material from
cylinder block using putty knife. Clean residue from cylinder block top
using cleaning solvent P-D-680 and remove cloths from pistons.
INSPECTION (SHEET 1 OF 2)
Inspect cylinder head (3)
for cracks or thread dam-
age. Using straight edge
and 0.005 inch thickness
gage, check for warpage at
each side, between all
cylinders, and end-to-end
in at least six positions.
Measure cylinder head
height. If 0.005 inch
thickness gage fits under
straight edge, cylinder
head must be machined. If
cylinder head is cracked,
threads are damaged, or
head height after machin-
ing is less than 4.080
inches, replace cylinder
Remove valves from defective cylinder head (page 3-75) and forward de-
fective cylinder head to general support maintenance for repair. Then
install valves in machined or replacement cylinder head (page 3-86).
(2) Inspect rocker arm studs (6) for cracks and damaged threads. Remove
defective stud using pliers. Put retaining compound on cylinder head
threads of new stud (6), install stud, and tighten to 40 to 45 lb-ft.