Kubota M5040 Workshop Manual page 511

M5040, M6040, M7040, WSM
AIR CONDITIONING SYSTEM (Continued)
Symptom
Insufficient Cooling
(Hi-pressure Level is
Too Low)
Insufficient Cooling
(Low-pressure Level
is Too High)
Insufficient Cooling
(Low-pressure Level
is Too Low)
Insufficient Cooling
(Both Hi-pressure
and Low-pressure
Level is Too High)
Insufficient Cooling
(Both Hi-pressure
and Low-pressure
Level is Too Low)
Temperature Cannot
be Controlled
(Temperature Motor
and/or Temperature
Control Dial
Malfunction)
Temperature Cannot
be Controlled (Water
Valve Does Not Open
Properly)
Temperature Cannot
be Controlled (Mode
Motor and/or Mode
Switch Malfunction)
Temperature Cannot
be Controlled (Heater
Hoses Laid is Bad)
Probable Cause
Refrigerant too short
Compressor discharge valve damaged
Compressor gasket damaged
Low-pressure pipe in trouble (Cracked or
clogged)
Refrigerant overcharged
Heat-sensitive tube in poor contact
Expansion valve too open
Refrigerant too short
Gas leak at heat-sensitive tube
Evaporator frosted
Low-pressure pipe in trouble (Cracked or
clogged)
Expansion valve clogged
Refrigerant overcharged
Refrigerant too short
Temperature motor defective
Temperature control dial defective
Wiring harness controller disconnected
Cable wrongly set
Cable disconnected
Mode motor defective
Mode Switch defective
Wiring harness controller disconnected
Heater hose caught
Heater hose twiseted or bent
Check with manifold
gauge
Replace
Replace
Replace
Check with manifold
gauge
Check and repair
Replace
Check with manifold
gauge
Replace
Clean or replace
Replace
Replace
Check with manifold
gauge
Check with manifold
gauge
Replace
Replace
Repair or replace
Repair
Repair
Replace
Raplace
Repair or replace
Repair
Repair or replace
10-S3
CABIN
Reference
Solution
Page
10-S21
10-S39, 40
10-S39, 40
10-S39
10-S21
–
–
10-S21
–
–
10-S39
–
10-S21
10-S21
10-S28
10-S26
10-S26
–
–
10-S28
10-S26
10-S26
–
–
W1014322
KiSC issued 06, 2008 A