TM 9-4940-549-14&P
General. The gear housing and cover mounted to the front of the
a.
engine covers the engine drive gears. The gear housing also forms
the front support for the engine. The front oil seal for the crank-
shaft is also installed in the cover plate. The cover plate can be
removed for inspection of the gears without removing the gear hous-
ing.
Removal.
b.
Remove the nut (1, figure 12-3), lockwasher (2), and flat wash-
(1)
er (3) that secure the fan drive pulley (6) to the crankshaft.
Use a puller to remove the pulley and pulley cone (5). Remove
the key (7).
(2)
Remove the bolts (8, 10, and 11), lockwashers (9), and nuts
(12 ) that secure the cover (14) to the gear housing. Remove
the cover by pulling it away from the engine.
Remove the thrust plate (19) and gasket (20) from the gear
(3)
cover by removing four bolts (17) and lockwashers (18). Press
the oil seal (21) from the gear cover.
(4)
Remove the fuel injection pump.
If it is necessary to remove the gear housing from the crank-
(5)
case, proceed as follows:
Drain the engine oil and remove the oil pan.
(a)
Remove the front oil pan adapter by first removing the two
(b)
nuts and lockwashers securing the adapter to the cylinder
block and removing the four bolts and lockwashers secur-
ing the adapter to the gear housing.
(27). To keep the shaft from
Remove the camshaft nut
(c)
turning, insert a brass
bar between the crankshaft gear
Using a standard foot type puller
and the camshaft gear.
inserted in holes in the
gear, pull the camshaft gear (28)
from the camshaft.
Remove bolts (32 and 34) and lockwashers (33 and 35).
(d)
Pull the gear housing away from the cylinder block. It
may be necessary to tap the housing with a soft hammer to
loosen it from the dowels or from gasket (40) sticking to
the block.
Cleaning , Inspection, and Repair.
c.
(1) Discard all gaskets and seals.
(2) Clean the gear cover, housing, and attaching parts with clean-
ing solvent. Dry thoroughly. Make sure all old gasket materi-
al is removed from the gasket surfaces.
12-6
