TM 5-2420-231-23-1
0029
Table 1. A/C System Pressure Indicator Fault.
0029
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
A/C System Pressure
Test Step 1. Verify Correct Operation
Indicator Fault
of A/C System Pressure Indicator.
1. Turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
2. Turn fan speed switch (Figure 1,
Item 1) to the highest setting and
A/C temperature switch (Figure 1,
Item 3) to the maximum clockwise
position (TM 5-2420-231-10).
3. Start and operate engine for
approximately 10 minutes (TM 5-
2420-231-10).
4. Check A/C system pressure indi-
A/C System Pressure Indicator On -
cator (Figure 1, Item 2) (TM 5-
Proceed to step 5.
2420-231-10).
A/C System Pressure Indicator Off
and A/C Not Working - Isolate fault
using A/C Compressor Does Not
Operate (WP 0032) and then proceed
to Test Step 6.
Figure 1. Instrument Cluster Air Conditioning System.
0029