TM 5-3810-307-24-1-1
30. Close drain cock on the secondary reservoir
36. Service brakes on rear axles only should
and recharge the air system.
apply.
31. Simulate a full air leak in the primary air
37. Assure brake lights on rear of crane come on
system by depressing needle in center of automatic
when service brakes are applied.
drain valve on the main supply reservoir.
38.
Release service brakes.
32. Low Air Pressure light and warning buzzer will
come on when primary system air pressure drops
39.
Check that all wheels can turn freely.
below 70 5 psi. Keep needle on automatic drain
valve depressed.
40. Release needle on automatic drain valve and
recharge primary air system.
33. Secondary system air pressure should not
drop below 85 5 psi.
41.
Retract and stow outriggers.
34.
Check that all wheels can turn freely.
This completes the Air System Test, if all test results
are acceptable, the crane may be returned to
35.
Apply service brakes.
service.
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