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 TM 5-2420-224-34
CYLINDER HEAD REPLACEMENT (CONT)
INSTALLATION
CAUTION
Make sure all gasket material
h a s been removed from mating
s u r f a c e s to prevent damage to
equipment.
1.
INSTALL new GASKET (1) with word TOP or
"OBEN" UP.
2.
MEASURE length of 23 BOLTS (2). Maximum
a l l o w a b l e length is 4.41 in. (112 mm).
R E P L A C E any BOLT(S) (2) that exceed
maximum length.
APPLY light COAT of LUBRICATING OIL to
3.
THREADS of 23 bolts (2) and 2 BOLTS (3).
4.
INSTALL cylinder HEAD (4), 23 bolts (2), and
2 bolts (3).
NOTE
Each tightening sequence must be
completed before performing next
step.
5.
USING SEQUENCE shown, TIGHTEN 25
BOLTS (2 and 3) to following values:
Step a: 44 Ib-ft (60 N.m)
Step b: 66 Ib-ft (90 N.m)
Step c: 81 Ib-ft (110 N.m)
INSTALL 12 push RODS (5).
6.
7.
INSTALL rocker ARM assembly (6), two bolts
(7), and bolt (8).
NOTE
M a k e s u r e l a r g e e n d o f nipple
assembly is facing rear of engine.
INSTALL spring (9), two nipples (10),
8.
(11 ), rocker ARM assembly- (12); two bolts
(13), and bolt (14). TIGHTEN BOLTS (7, 8,
13 and 14) to 74 Ib-ft (100 N.m).
3-27
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