TM 5-4310-386-14
f.
Compressor Oil. (figure 4-4)
(1)
The compressor oil level must be checked at eight hour intervals of operation or more often should oil
consumption increase.
(2)
A new or reconditioned compressor shall have the oil changed after 25 hours of operation. Thereafter, the
interval is lengthened to 250 hours.
(3)
Before draining the compressor, operate the compressor until the ENGINE HEAD TEMPERATURE gage on
the instrument panel reads 110°F (46°C) to ensure suspension and drainage of particles.
(4)
Stop compressor unit, place container under drain plug (1) located on left side of compressor and remove
drain plug.
(5)
After oil has drained completely, install drain plug (1).
(6)
Remove the oil filter cap (2).
(7)
Fill compressor with oil to the top indentation on dipstick (3).
(8)
Operate the compressor unit until the ENGINE HEAD TEMPERATURE reads 100°F (46°C)
(9)
To ensure proper operation of the oil pump, perform the following:
(a)
Loosen vent screw (4) by one or two turns until oil emerges free of air bubbles. Then tighten vent
screw.
(b)
Loosen coupling (5) until bubble free oil emerges. Then tighten coupling.
g.
Clutch. (figure 4-5) Remove the front panel on the compressor unit, and lubricate the following grease fittings with
grease using hand operated grease gun as follows:
(1)
Remove four bolts (1), lockwashers (2), and washers (3) and remove panel (4).
(2)
Lubricate throw-out collar (5) one stroke of grease gun, every 10 hours.
(3)
Lubricate main shaft bearing (6). four strokes of grease gun, every 50 hours.
(4)
Lubricate lever shaft (7) (2 places), one stroke of grease gun, every 10 hours.
(5)
Lubricate pilot bearing (8), two strokes of grease gun, every 100 hours.
(6)
Install panel (4) and secure with four washers (3), lockwashers (2), and bolts (1).
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