Kubota M108S, Workshop Manual

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10-S1
M108S, WSM CABIN
1. TROUBLESHOOTING
COMPRESSOR
W1013580
AIR CONDITIONING SYSTEM
W1013718
Symptom Probable Cause Solution
Reference
Page
Noisy
(Compressor ON) Bearing of compressor worn or damaged Replace 10-S39
Valves in compressor damaged Replace 10-S39
Belt slipping Adjust or replace G-29
Compressor bracket mounting screws loosen Tighten –
Piping resonant Tighten or add clamp –
Noisy
(Compressor OFF) Blower defective Repair or replace 10-S25
Bearings of magnetic clutch, idle pulley or crank
pulley worn or damaged Replace 10-S39
Does Not Cool
(No Air Flow) Fuse blown Replace –
Blower relay defective Replace 9-S26
A/C blower motor defective Replace 10-S25
A/C blower switch defective Replace 10-S24
Wiring harness disconnected or improperly
connected Repair –
Does Not Cool
(Compressor Does
Not Rotate) Fuse blown Replace –
Magnetic clutch defective Repair or replace 10-S22
A/C switch defective Replace 10-S26
Pressure switch defective Replace 10-S29
Belt slipping Adjust or replace G-29
Does Not Cool
(Others) Insufficient refrigerant Check with manifold
gauge 10-S21
Expansion valve defective Replace –
Compressor defective Replace 10-S39
Insufficient Cooling
(Insufficient Air
Flow) Air filter clogged Clean or replace G-28
Evaporator frosted Clean or replace
thermo switch –
A/C blower motor defective Replace 10-S25
A/C blower resistor defective Replace 10-S25
Insufficient Cooling
(Many Bubbles in
Sight Glass) Insufficient refrigerant Check with manifold
gauge 10-S21
Gas leaking from some place in refrigerating
cycle Repair and charge
refrigerant 10-S11
Air mixed in Check with manifold
gauge 10-S13
Insufficient Cooling
(No Bubbles in Sight
Glass) Too much refrigerant Check with manifold
gauge 10-S21
KiSC issued 06, 2007 A