TM 5-3805-292-23
0006
CHASSIS TROUBLESHOOTING - A/C IS NOT COOLING CAB PROPERLY CONTINUED
AI
Run engine (TM 5-3805-292-10).
Turn A/C and blower to high (TM
5-3805-292-10). Connect gauge
Run engine (TM 5-3805-292-10).
A/C
set (WP 0093). Ensure gauges
Turn A/C and blower to high.
compressor
YES
read correctly. Refer to Table 1 in
Check if A/C compressor engages.
engaged?
this WP for correct gauge
pressures.
NO
Turn power off (TM 5-3805-292-10).
Disconnect A/C compressor
connector (WP 0012).
Turn machine power on (TM 5-3805-
292-10).
Voltage
Turn blower switch to HIGH (TM 5-
Replace A/C compressor (WP 0012).
YES
present?
3805-292-10).
Measure voltage between A/C
compressor connector AC2, circuit
AC (DB), harness side, and ground
Find and repair refrigerant leak.
Both
Reclaim, evacuate, and recharge
readings
YES
too low?
A/C to proper level (WP 0093).
NO
NO
Low side
There is air in system, reclaim,
normal high
evacuate, and recharge A/C to
YES
side
AN
proper level (WP 0093).
bounces?
CONTINUED
NO
There is moisture in system or receiver/
Low side too
dryer is saturated. Replace receiver/dryer
low, high side
YES
(WP 0092). Reclaim, evacuate, and
too high?
recharge A/C to proper level (WP 0093).
NO
AJ
CONTINUED
