TM 5-2410-241-23-1
0022
Table 1. Cab Troubleshooting Procedures - Continued.
0022
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
There is Little or No COLD
7. Low Pressure is Below Normal
1. If high pressure hose is NOT ser-
Airflow when Air Condi-
and High Pressure Reading
viceable - Replace high pressure
tioning is On - Contin-
Normal.
hose (WP 0241). Verify correct
ued
Remove high pressure hose
operation of machine (TM 5-2410-
(WP 0241) and inspect for a
241-10).
restriction.
2. If high pressure hose is service-
able, replace receiver-dryer orifice
tube (WP 0240). Verify correct
operation of machine (TM 5-2410-
241-10).
8. Low Pressure is Normal and
1. If high pressure hose is NOT ser-
High Pressure Reading is
viceable, replace high pressure
Above Normal
hose (WP 0241). Verify correct
Remove high pressure hose
operation of machine (TM 5-2410-
(WP 0241) and inspect for a
241-10).
restriction.
2. If high pressure hose is service-
able, replace receiver-dryer orifice
tube (WP 0240). Verify correct
operation of machine (TM 5-2410-
241-10).
9. Low Pressure is Normal and
1. If low pressure hose is NOT ser-
High Pressure Reading is
viceable, replace low pressure
BELOW Normal
hose (WP 0242). Verify correct
Remove low pressure hose
operation of machine (TM 5-2410-
(WP 0242) and inspect for a
241-10).
restriction.
2. If low pressure hose is service-
able, replace A/C compressor
(WP 0097). Verify correct opera-
tion of machine (TM 5-2410-241-
10).
10. Low Pressure Gauge Reading
Air is in the A/C system. Evacuate and
is Normal, and High Pressure
recharge A/C system. Refer to A/C
Gauge Bounces, or Gauge is
System Service (WP 0263). Verify
Unsteady
correct operation of machine (TM 5-
a. Low pressure gauge reading
2410-241-10).
is normal, but may drop into
vacuum range during the test.
b. High pressure gauge reading
is normal, but the low pres-
sure gauge reading is below
normal.
c.
Airflow from evaporator is
very cold, but will become
warm when low pressure
gauge drops into vacuum.
0022-112
