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Page Title: Section IX. FLYWHEEL AND FLYWHEEL HOUSING
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TM 10-3930-632-34
d.
b.
Disconnect the linkage from the governor lever
Clean the bearings and all remaining parts
(TM 10-3930-632-12).
with cleaning solvent P-D-680 and dry thoroughly. Dip
e.
Disconnect the hose to the engine oil filter
the bearings in clean engine oil and wrap them in paper
to protect them from dust and dirt.
from the gear cover. Drain the oil from the filter and
c.
Inspect the gear cover for cracks, distortion,
f.
Remove the hex locknuts (fig. 2-3) and lower
damaged sealing surfaces, and other damage; replace a
damaged gear cover.
support pads from the stud of the engine assembly.
d.
Inspect the idler gear and shaft for worn or
Hoist the engine just enough to raise the upper support
chipped gear teeth and a scored or worn shaft; replace if
pad off the frame. Block the engine in this position.
g.
Disconnect the hydraulic  lines  from  the
damaged.
e.
Inspect all other parts for cracks, distortion,
hydraulic pump (TM 10-3930-632-12).
h.
Remove the capscrews and bolts (fig. 9-19),
worn or damaged threads, and other damage; replace
damaged parts.
nuts, lockwashers and copper washers that secure the
gear cover to the engine block; remove the gear cover
from the engine block.
9-21.
Reassembly and Installation
I.
Remove the governor lever and related parts
a.
Refer to figure 9-19 and reassemble and
from the gear cover (para 9-6).
install the idler gear and gear cover.
j.
Remove the idler gear (33, fig.  9-19) and
b.
Connect the hydraulic lines to the main
spindle (35). Remove the gear screw (31) and thrust
hydraulic pump (TM 10-3930-632-12).
washer (32) from the shaft.
c.
Lower the engine so that the support pad is
k.
Press the seal (18) from the gear cover.
resting on the truck frame; install the bottom support
l.
Remove the bearing from the shaft of the idler
pads, spacer and nuts (fig. 2-3).
gear only if necessary for replacement.
d.
Connect the hose from the engine oil filter to
the gear cover; fill the crankcase (LO 10-3930-632-12).
e.
Secure the crankshaft pulley (4, fig. 9-20) to
WARNING
the crankshaft, using the bolt (1) and washer (2).
f.
Dry cleaning solvent, P-D-680, used to clean
Position the fan and generator drive V-belts on
parts is potentially dangerous to personnel and
the pulleys (TM 10-3930-632-12). Connect the linkage
property.  Avoid repeated and prolonged skin
devises to the lever.
g.
contact.
Do not use near open flame or
Install the muffler, radiator, and counterweight
excessive heat. Flash point of solvent is 100 F.
(TM 10-3930-632-12).
- 138F. (39 C. - 59 C.).
9-20.
Cleaning and Inspection
a.
Discard and replace all gaskets and seals.
Section IX. FLYWHEEL AND FLYWHEEL HOUSING
9-22.
General
WARNING
The flywheel is connected to the rear of the
crankshaft to help smooth the rotational force produced
Dry cleaning solvent, P-D-680, used to clean
by the engine. It is provided with a ring gear around its
parts is potentially dangerous to personnel and
exterior. The pinion of the engine starter engages this
property.  Avoid repeated and prolonged skin
ring gear to turn over the engine when starting.  The
contact.
Do not use near open flame or
excessive heat. Flash point of solvent is 100 F.
flywheel housing houses the flywheel and provides a
- 138 F. (39 C. - 59 C.).
mounting from the equipment driven by the engine.
9-23.
Removal
9-24.
Cleaning, Inspection, and Repair
a.
Clean the flywheel and flywheel housing with
With the engine removed from the truck, remove the
cleaning solvent P-D-680 and dry thoroughly.
flywheel and flywheel housing as follows:
b.
Inspect the flywheel housing for cracks,
a.
Remove the six nuts (24, fig.  9-20) and
distortion, and damaged threads; replace a damaged
lockwashers (25) that secure the flywheel (27) to the
flywheel housing.
crankshaft (26); remove the flywheel.
c.
Inspect the flywheel for chipped, cracked, or
b.
Remove the screws (29 and 32, fig. 9-26) and
washers (30 and 33) that secure the flywheel housing
(35, fig. 9-20) to the block; remove the flywheel housing.
9-16

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