TM 5-3805-292-23
0006
CHASSIS TROUBLESHOOTING - A/C IS NOT COOLING CAB PROPERLY CONTINUED
AN
Disconnect A/C pressure switch
Run engine (TM 5-3805-292-10).
Turn A/C and blower to HIGH.
Does
Connect jumper wire to A/C
Replace A/C pressure switch
YES
pressure switch connector HVC7,
clutch
circuit 009 (DB), harness side, and
engage?
connector AC1, circuit AC (DB),
HVAC).
NO
Shut down engine but leave machine
power ON. Leave jumper wire in
place.
Run engine (TM 5-3805-292-10).
Turn A/C and blower to HIGH.
From inside cab, connect jumper wire
to thermostat connector HJC3, circuit
009B (DB), harness side, and
connector HJC4, circuit 008B (DB),
HVAC).
Does
Replace thermostat (WP 0130).
YES
clutch
engage?
NO
Shut down engine but leave machine
power ON. Leave jumper wire in
place.
Disconnect A/C switch (WP 0135).
Does
Run engine (TM 5-3805-292-10).
Replace A/C switch (WP 0135).
Turn A/C and blower to HIGH.
YES
clutch
Connect jumper wire to AC switch
engage?
connector HVC5-2, circuit 008 (DB),
harness side, and HVC5-3, circuit
002 (R), harness side (WP 0175,
NO
Frame 5. HVAC).
Shut down engine but leave machine
power ON. Leave jumper wire in place.
AL
CONTINUED