TM 5-2410-240-23-1
0021
Table 1. Cab Troubleshooting Without Codes. - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Air Conditioning Does Not Blow
Test Step 12.
Cold When Maximum Cooling is
1. Turn ignition switch and bat-
Selected - Continued
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Disconnect harness connec-
tor EN-C10 (WP 0018, Figure
127) from A/C clutch (WP
0092).
3. Start and run machine (TM 5-
2410-240-10).
4. Select manual A/C mode, and
turn HVAC blower motor to
highest setting (TM 5-2410-
240-10).
5. Using digital multimeter, mea-
Voltage Less Than Specified
sure for voltage (WP 0283)
Range - Proceed to step 7.
between harness connector
Voltage Within Specified Range
EN-C10 (WP 0018, Figure
- Proceed to step 6.
127) terminal 1 and ground.
There should be approximately 18
to 26 volts.
6. Using digital multimeter, mea-
Voltage Less Than Specified -
sure for voltage (WP 0283)
Proceed to step 19.
between harness connector
Voltage Within Specified Range
EN-C10 (WP 0018, Figure
- A/C compressor clutch faulty;
127) terminal 1 and harness
replace A/C compressor (WP
connector EN-C10 (WP 0018,
0093). Ensure all harness connec-
Figure 127) terminal 2.
tors are reconnected. Verify proper
There should be approximately 18
operation of machine (TM 5-2410-
to 26 volts.
240-10).
7. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
8. Disconnect harness connec-
tor PL-C29 (WP 0018, Figure
231) from A/C clutch solenoid
relay (WP 0018, Figure 239).
9. Disconnect harness connec-
tor PL-C26 (WP 0018, Figure
229) from reversing fan relay 1
(WP 0018, Figure 238).
10. Connect reversing fan relay 1
(WP 0018, Figure 238) on har-
ness connector PL-C29 (WP
0018, Figure 231).
0021-68