TM 5-3810-306-20
Section I. SERVICE BRAKES MAINTENANCE
AIR SYSTEM PURGE
TOOLS:
General mechanic’s tool kit: automotive (5180-00-177-7033)
SUPPLIES:
None
EQUIPMENT CONDITION:
Crane wheels are chocked.
PURGE:
WARNING
High pressure air discharge. Do not
open
petcocks
(1)
in
a
dirty
environment. Make sure area is clear
of loose dirt, stones, etc. Wear safety
goggles when purging air reservoirs
(2).
NOTE
Use this task to purge primary,
secondary and supply reservoirs.
Primary reservoir (2) is shown.
1.
PURGE PRIMARY RESERVOIR (2).
a. Slowly turn petcock (1) counterclockwise.
b. Let air escape from reservoir (2) a small amount
at a time.
c. Turn petcock (1) clockwise to close when
reservoir (2) is empty.
2.
REPEAT
STEP
1
FOR
SECONDARY
RESERVOIR.
3.
PURGE SUPPLY RESERVOIR.
11-2
