TM 5-3805-293-23-2
0022
Table 1. Cab Heating, Air Conditioning, and 12 Volt Power Inverter Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Air Conditioning Does
Test Step 3. Inspect Drive Belt, Pul- Drive Belt Worn - Replace drive belt
Not Blow Cold When A/C leys, and Monitor AC Pressure
(WP 0093).
Is Turned On and Tem-
1. Inspect the condition of the alter-
perature Control Is Set
nator drive belt, pulley, vibration
To Maximum Cool - Con-
damper, belt tensioner, refriger-
tinued
ant compressor pulley, and crank-
shaft pulley (WP 0032).
Alternator Pulley Damaged -
Replace pulley (WP 0094).
Refrigerant Compressor Pulley
Damaged - Replace compressor
assembly (WP 0096).
Crankshaft Pulley Damaged -
Replace crankshaft pulley (WP 0083).
Vibration Damper Damaged -
Replace vibration damper (WP 0083).
Belt Tensioner Binds or Sticks -
Replace belt tensioner (WP 0093).
2. Connect refrigerant reclaimer
(WP 0045).
N OT E
Refer to A/C Performance Test (WP 0045) for normal operating pres-
sures.
3. Perform A/C Performance Test
(WP 0045).
0022-11