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TM 9-2320-364-34-4
20-255
(28)
Place clean cloth between tops of camshaft
gears (1) and (3).
(29)
Install camshaft nut lock plate (32) and
accessory drive hub (33) on left camshaft
gear (3) with four screws (34). Tighten
screws 35 to 39 lb-ft (47 to 53 N.m).
(30)
Place clean cloth between bottom of
camshaft gears (1) and (3).
(31)
Install accessory drive hub (35) on right
camshaft gear (1) with four screws (36).
Tighten screws 35 to 39 lb-ft (47 to 53 N.m).
(32)
Check end play of camshaft assemblies (1)
and (3). Install dial indicator on engine
block. Push camshaft towards gage and
adjust dial indicator to zero. Force cam
shaft in opposite direction and read end
play. If end play is less than 0.003 in.
(0.076 mm) or greater than 0.018 in.
(0.457 mm), replace camshaft.
NOTE
Minimum backlash for new gears
is 0.002 to 0.008 in. (0.051 to
0.203 mm). If backlash is greater
than 0.010 in. (0.254 mm),
replace gears. Maximum
backlash for used gears is 0.010
in. (0.254 mm).
(33)
Check backlash between camshaft gears
(1) and (3).
(34)
Remove cloth from between bottom of
camshaft gears (1) and (3).
b.
Follow-On Maintenance:
Install crankcase timing gear, (Para 20-74).
END OF TASK
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