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
4. Monitor and record low pressure
Low Pressure Gauge and High
Not Blow Cold When A/C
and high pressure gauge read-
Pressure Gauge is Above Normal -
Is Turned On and Tem-
ings.
Proceed to Test Step 4.
perature Control Is Set
Low Pressure Gauge is Above Nor-
To Maximum Cool - Con-
mal, and High Pressure Gauge is
tinued
Below Normal - Proceed to Test Step
5.
Low Pressure Gauge is Below Nor-
mal, and High Pressure Gauge is
Above Normal - Proceed to Test Step
6.
Low and High Pressure Gauges are
Both Below Normal - Proceed to
Test Step 7.
Low Pressure Gauge is Normal and
High Pressure Gauge is Above Nor-
mal - Proceed to Test Step 8.
Low Pressure Gauge is Normal and
High Pressure Gauge is Below Nor-
mal - Proceed to Test Step 9.
Low Pressure Gauge is Normal,
and High Pressure Gauge
Bounces, or High Pressure Gauge
is Unsteady - Proceed to Test Step
10.
Test Step 4. Low Pressure Gauge
and High Pressure Gauge Are
Above Normal.
1. A/C system is over charged.
Evacuate and Recharge A/C Sys-
tem - Evacuate and recharge A/C
system (WP 0295).
Proceed to Test Step 11.
0022-12
