release all pressure from air receiver.
and release all pressure from air receiver.
(2) Refer to figure 4-16 and unscrew the pilot
(3) Open compressor crankcase drain cock (fig.
valve from the air receiver.
4-16) and drain the crankcase.
(4) Remove the air compressor assembly as il-
b. Inspection and Repair.
lustrated in figure 4-16.
( 1 ) Inspect the pilot valve for worn or damaged
b. lnspection and Repair. Inspect and repair the
parts.
compressor air lines (para 4-24).
(2) Replace a defective pilot valve.
c. Installation.
c. Installation. Refer to figure 4-16 and install the
(1) Install the air compressor assembly as illus-
pilot valve in the air receiver.
trated in figure 4-16.
4-27. Air Compressor
(2) Install the compressor drive belt and belt
guard (para 3-17).
a. Removal.
(1) Remove the compressor drive belt guard and
(3) Refer to LO 5-4930-207-12 and service the
drive belt (para 3-17).
compressor crankcase.
(2) Open the air receiver drain valve (fig. 2-4)
Section VII. AIR LUBRICATION SYSTEM
4-28. General
( 1 ) Open the air receiver drain valve (fig. 2-4) and
release all air pressure from the air receiver.
The air lubricating system contains the components
(2) Remove the air regulator and lines in numeri-
which furnishes regulated and processed air (alcohol
cal sequence as illustrated in figure 4-18.
mist) to the air motor pumps, which dispenses lubri -
eating fluid through hose reels and control valves.
4-29. Air Regulator Valve
a. Removal.
4-22
