TM 5-3805-292-23
0006
CHASSIS TROUBLESHOOTING - A/C IS NOT COOLING CAB PROPERLY CONTINUED
AJ
Low side normal, high
side just below normal?
YES
NO
Check for receiver/dryer or liquid
lines between compressor and
Restriction?
Stop.
NO
evaporator for icing, frost, cool to the
touch. This may indicate a restriction.
YES
Remove restriction or replace line(s) (WP 0109),
receiver/dryer (WP 0092) and reclaim, evacuate,
and recharge AC to proper level (WP 0093).
N OT E
System cools during cooler part of the day but not during the hot part of the day.
Both readings
Large amount moisture in system and/or
normal then drops to
receiver/dryer is saturated. Replace receiver/
YES
vacuum and high drops to
dryer (WP 0092). Reclaim, evacuate, and
below normal?
recharge A/C to proper level (WP 0093).
NO
Low side does not
Find and repair refrigerant leaks. Replace
change, high side is at high
receiver/dryer (WP 0092). Reclaim, evacuate,
YES
end of normal?
and recharge A/C to proper level (WP 0093).
NO
AK
CONTINUED