MacDon M150 SP - Manual (Page 220)

TROUBLESHOOTING
* See your MacDon Dealer
** Refer to Windrower Technical Manual
Form 169017 / 169087 / 169095
218
Revision C
SYMPTOM PROBLEM SOLUTION SECTION
Steering Wheel Will Not
Unlock.
Transmission interlock cylinder not
working.
Contact MacDon Dealer. *
Steering Is Too Stiff Or
Too Loose
Steering chain tension is out of
adjustment.
Adjust steering chain tension 7.7.4.2
8.7 CAB AIR
SYMPTOM PROBLEM SOLUTION
SECTION
M150 M200
Blower Fan Will Not
Run.
Burned out motor.
Burned out switch.
Motor shaft tight or bearings worn.
Faulty wiring - loose or broken.
Blower rotors in contact with housing.
Contact MacDon Dealer. *
Blower Fan Operating
But No Air Coming Into
Cab.
Dirty fresh air filter. Clean fresh air filter. 7.7.6.1
Dirty recirculating air Clean recirculating filter 7.7.6.2
Evaporator clogged. Clean evaporator. 7.7.6.4
Air flow passage blocked. Remove blockage. ---
Heater Not Heating.
Heater shut-off valve at engine closed. Open valve. 5.10.1
Defective thermostat in engine water
outlet manifold.
Replace thermostat.
**
Heater temperature control defective. Replace control.
No thermostat in engine water outlet
manifold.
Install thermostat.
Odour From Air
Louvers.
Plugged drainage hose.
Blow out hose with compressed
air.
---
Dirty filters. Clean filters. 7.7.6.1 & 7.7.6.2
Air Conditioning Not
Cooling.
Low refrigerant level. Add refrigerant *
Switch contacts in thermostat burned
excessively, or sensing element defec-
tive.
Replace thermostat. **
Clutch coil burned out or disconnected. Contact MacDon Dealer. *
Condenser fins plugged. Clean condenser. 7.10.2
Blower motor disconnected or burned
out.
Contact MacDon Dealer. *
Loose or broken drive belt.
Replace drive belt and/ or tighten
to specs.
7.8.10.2 7.9.10.2
Compressor partially or completely
seized. Remove compressor for service
or replacement.
**
Dirty filters.
Clean fresh air and re-circulation
filters.
7.7.6.1 & 7.7.6.2
Broken or disconnected electrical wire.
Check all terminals for loose
connections. Check wiring for
hidden breaks.
---
Broken or disconnected ground wire.
Check ground wire to see if loose,
broken, or disconnected.
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