Kubota M9540, Workshop Manual

Page: 566 / 619

10-S2
M8540, M9540, WSM CABIN
AIR CONDITIONING SYSTEM (Continued)
W1013580
Symptom Probable Cause Solution
Reference
Page
Insufficient Cooling
(Compressor Does
Not Rotate Properly) Belt slipping Adjust or replace G-31
Magnetic clutch defective Repair or replace 10-S22
Compressor defective Replace 10-S43
Insufficient Cooling
(Others) Thermostat defective Replace –
Water valve defective Replace –
Condenser fin clogged with dust Clean G-31
Expansion valve defective Replace –
Insufficient Heating Water valve defective Replace –
Temperature motor defective Check and repair 10-S28
Insufficient coolant Replenish G-9
Too Low Air Flow
Rate (Blower Motor
Does Not Run) Blower fan switch defective Check and repair 10-S24
A/C compressor relay defective Replace 9-S42
Brush in poor contact Replace –
Fuse blown out Replace 9-S11
Wrong wiring or loose connections Check and repair –
Too Low Air Flow
Rate (Flow Rate Does
Not Change in 4
Steps) Blower resistor defective Replace 10-S27, 45
Relay defective Replace 9-S42
Blower fan switch defective Replace 10-S24
Too Low Air Flow
Rate (Others) Blower is not tightened enough Check and repair 10-S27, 45
Blower deformed Replace 10-S45
Blower in contact with casing Check and repair –
Obstacle at or near suction port Check and repair –
Evaporator frosted Clean or replace –
Filter clogged Clean or replace G-30
Blow duct clogged or missing Check and repair –
Insufficient Cooling
(Compressor
Magnetic Clutch
Does Not Work) Low battery voltage Charge –
Rotor in contact with stator Replace 10-S44
Wrong wiring loose connections Check and repair –
Relay defective Replace 9-S42
Coil shortage Replace –
Ground malfunction Check and Repair –
Coil burst out Replace –
Insufficient Cooling
(Hi-pressure Level is
Too High) Refrigerant overcharged Check with manifold
gauge 10-S21
Condenser clogged with dust and dirt Clean G-31
Air mixed Check with manifold
gauge 10-S15
KiSC issued 09, 2008 A