TB 9-2320-360-13&P-1
0
A/C DOES NOT OPERATE
Personnel
INITIAL SETUP:
Two
Maintenance Level
Direct Support
References
TM 9-2320-360-20
Tools and Special Tools
Tool Kit, General Mechanic (Item 12, WP 0060 00)
Equipment Conditions
Goggles (Item 4, WP 0060 00)
Engine off (TM 9-2320-360-10)
A/C Test Set Subassembly (Item 11, WP 0060 00)
Parking brake applied (TM 9-2320-360-10)
Detector, Leak (Item 8, WP 0060 00)
Wheels chocked (TM 9-2320-360-10)
Materials/Parts
Gloves, Rubber (Item 4, WP 0061 00)
N OT E
Technician must be certified in mobile A/C to work on refrigeration system of A/C.
Connect A/C test set recovery/recycling manifold gages to A/C service valves as indicated in Step 1, before per-
forming this work package.
A/C receiver/dryer must be replaced whenever system is recovered.
KNOWN INFO
START
TEST OPTIONS
Power to A/C system OK.
Visual Inspection.
A/C circuit wiring OK.
A/C controls OK (except for A/C
REASON FOR QUESTION
binary switch and A/C
If A/C receiver/dryer moisture
thermostatic switch).
indicator is not blue, moisture has
WARNING
1.
POSSIBLE PROBLEMS
entered system.
Read WARNING on
A/C receiver/dryer moisture
page 0042 00-3.
indicator indicates moisture in
system.
Is A/C receiver/dryer moisture
A/C receiver/dryer sight glass
indicator blue?
indicates desiccant breakdown or
oil in system.
A/C system charge low.
A/C compressor faulty.
Restricted A/C hose.
A/C thermostatic switch faulty.
Air or other contaminant in A/C
system.
A/C engine fan control circuit
Perform leak test (WP 0038
faulty.
00), repair any leaks found,
A/C condenser faulty.
and replace A/C receiver/
NO
A/C expansion valve faulty.
dryer (WP 0054 00) and
A/C system overcharged.
R-134a (WP 0056 00). Go
YES
A/C system leaking.
to Step 2 of this fault.
A/C receiver/dryer faulty.
A/C evaporator faulty.
A/C binary switch faulty.
(0042 00-1 Blank)/0042 00-2