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TM 9-2320-360-34-1
(2)
Loosen locknut (3) on exhaust valve
rocker arm push rod (4).
NOTE
If a .012 in. -.020 in. feeler gage will
pass between the valve bridge and
the valve rocker arm pallet, the valve
clearance is OK, go to step (6)
(3)
Insert feeler gage between valve bridge
(5) and valve rocker arm pallet (6).
(4)
Adjust push rod (4) until slight drag is felt
on .016 in. feeler gage.
(5)
Remove feeler gage and tighten push rod
locknut (3). Check clearance.
(6)
Repeat steps (1) thru (5) to adjust exhaust
valves (7) on remaining seven cylinders.
b.
Engine Brake Retarder Adjustment
CAUTION
Ensure exhaust valves are closed
and
injector
follower
is
fully
depressed to prevent damage to
engine.
NOTE
Exhaust valves are fully closed when
push rod sides of rocker arms are at
their
lowest
point
and
injector
follower is fully depressed.
(1)
Insert 0.059 in. feeler gage between slave
piston foot (1) and exhaust valve bridge
(2).
(2)
Loosen locknut (3) and turn adjusting
screw (4) until slight drag is felt on feeler
gage.
(3)
Check both feet of slave piston (1) with
feeler gage.
(4)
Hold adjusting screw (4). Torque locknut
(3) to 180-216 lb-in. (20.3-24.4 Nm).
Check clearance.
Change 1 3-137
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