TM 5-4930-244-14
WARNING
Handling hot items presents a serious burn potential. Temperature resistant
gloves are required.
NOTE
Insufficient heat or delay in installing gear (15) could cause the gear to become
jammed on the camshaft (22), whereas overheating may cause softening of the
gear (15).
(5)
Heat the camshaft gear (15) to straw yellow and install it on the camshaft (22) without delay.
(6)
When the gear (15) has cooled sufficiently, install the plate (19) and screw (18). Torque screw to 27 5 Ib-ft (37.5
Nm).
(7)
With the engine standing on its flywheel, place the tappets (23) in their original pisitions and push them as far as
they will go into the crankcase (3).
(8)
Lightly oil the camshaft (22) and bearings (25, 26, 27) with new engine oil.
(9)
Carefully install the camshaft (22) through the gear end of the crankcase (3).
(10)
Align holes in gear (15) with holes for screws (20) and install screws (20).
(11)
Using dial indicator, check clearance (endfl oat) on front face of spur gear (15). Clearance should be between
0.005 inch to 0 012 inch (0.13 mm to 0 31 mm) and is not adjustable.
(12)
If camshaft (22) clearance is not within tolerances, install new plate (21).
WARNING
Handling hot items presents a serious burn potential. Temperature resistant
gloves are required.
NOTE
Insufficient heat or delay in installing gear (14) could cause the gear to become
jammed on the crankshaft, whereas overheating may cause softening of the gear
(14).
(13)
Heat the crankshaft gear (14) to straw yellow and install it on the crankshaft without delay. Make sure that mark
on crankshaft gear (14) is aligned between two dots on camshaft gear (15).
(14)
Install plate (13), without the packing (17), and install screw (16). Torque to 27.5 Ib-ft (37.5 Nm).
(15)
When the gear (14) has cooled sufficiently, remove the plate (13).
(16)
Install new packing (17) on plate (13) and install plate by pushing it into position. resistance will be felt due to the
new packing (17).
(17)
Install screw (16) and torque to 27.5 Ib-ft (37.5 Nm).
6-28
