TM 5-4310-386-14
(10)
Inspect gear (11) and camshaft (15) for damage and visible signs of wear.
(11)
Measure journal at drive end of camshaft with outside micrometers. Outside diameter should not be
smaller than 1.57382 inches (40-0.025 mm).
(12)
Inspect bearing bushings in crankcase for damage and visible sign of wear.
(13)
Set dial indicator of inside micrometer to normal inside diameter of camshaft bearing bushing 2.046 + .002
inches (51.97 + 0.06 mm).
(14)
Measure the bearing bore at points 1 and 2 in planes A and B.
(15)
Slightly oil tappets (14) with lubricating oil and install and retain in position.
(16)
Install camshaft (15) from front of engine in bearing bores.
(17)
Install thrust ring (12) on end of camshaft (15).
(18)
Install pin (13) of gear (11) about .079 inches (2 mm) in the direction of the marked side.
(19)
Install gear (11) so that tooth marked 1 engages in gap between teeth marked 15 and 16 of crankshaft
gear. Note camshaft gear (11 ) must be installed from injection pump side of crankcase.
(20)
Rotate camshaft (15) and align holes in camshaft (15) and gear (11).
(21)
Install six screws (8), lockwasher (9), and washers (10) to secure gear (11) to camshaft (15).
(22)
Position eccentric disc (7) on gear (11).
(23)
Install five screws (5) and lockwashers (6) to secure eccentric disc (7) to gear(11). Torque per Appendix
F.
(24)
Measure distance from front face of cover (3) to surface.
(25)
Drive pin (13) into gear (11) so that pin (13) clears joint surface by distance from front face of cover plus
.039 to .079 inches (1 to 2 mm).
(26)
Apply grease to gasket (4), and install on cover (3).
(27)
Install cover (3) and secure with five bolts (1) and lockwashers (2).Torque bolts per Appendix F.
(28)
Check end clearance of camshaft (15). The end clearance must be within .0078 to .0118 inches
(2-3 mm).
If on the low side, correct by driving the gear (11) in the direction of the camshaft cover (3). If the end
clearance is on the high side, dismantle gear and drive pin (13) outward by corresponding amount.
FOLLOW-ON MAINTENANCE
(1)
Install rocker arm and pushrod (para. 5-38).
(2)
Install fuel injector pump (para. 5-30).
(3)
Install alternator (para. 4-44).
(4)
Install engine (para. 4-29).
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