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Reassembly and Installation. - TM-5-4310-354-140257
Figure 7-49. Gear housing, cover, and timing gears, disassembly and reassembly.

TM-5-4310-354-14 Compressor Rotary; Air Skid Mounted; Diesel Engine 125 CFM 100 PSIG (Davey Model 6M125) Manual
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TM 5-4310-354-14
should not exceed 0.008 inch (0.2032 mm) total
(11) Install cover (14), lock washers (13), and cap
indicator reading. If runout is excessive, remove
screws (12).
the flywheel and check for dirt or foreign matter
between the flywheel and mounting seat on the
(12) Install the starting motor as sembly (figure 4-24).
crankshaft. Reinstall and recheck.
(13) Install the engine on unit (para 5-12. b.
and
(10) Install the lock wires (if used) on cap screws (1,
figure 5-7).
figure 7-46).
Section IX. GEAR HOUSING, COVER, AND TIMING GEARS
7-19. General. The gear housing and cover, mounted
7-20. Gear Housing, Cover, and Timing Gears.
to the front of the engine, covers the engine drive gears.
The gear housing also forms the front support for the
a. Removal and Disassembly.
engine.  The front oil seal for the crankshaft is also
installed in the cover plate.  The cover plate can be
(1) Remove the engine from the unit (para 5-12 and
removed for inspection of the gears without removing the
figure 5-7).
gear housing. The timing gears housed within the gear
housing are the crankshaft drive gear (attached to the
(2) Remove the fan and drive belt (figure 7-33).
crankshaft), camshaft drive gear, an idler gear, and the
fuel injection pump drive gear.
Timing marks are
(3) Remove the alternator and mounting bracket
provided on the crankshaft gear and camshaft gear to
(figure 4-25).
facilitate correct gear timing at assembly. Timing of the
fuel injection pump is found in para 7-8. f.
(4) Remove crankshaft nut (1, figure 7-49) and lock
washer (2) that secure the fan drive
7-54






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