MacDon M1170 - Steering and Ground Speed Control Troubleshooting

214733 412 Revision A
7.6 Steering and Ground Speed Control Troubleshooting
Problem Solution
Section
Symptom: The machine will not steer straight.
Linkage worn or loose
Adjust steering chain tension. Replace
worn parts. Adjust linkage.
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Symptom: The machine moves on flat ground with controls set to neutral.
Neutral interlock misadjusted Contact Dealer.
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Parking brake not functioning Contact Dealer.
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Ground speed lever (GSL) servo
misadjusted
Contact Dealer.
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GSL cable misadjusted Contact Dealer.
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Symptom: Steering wheel will not lock with the GSL set to PARK.
Transmission interlock misadjusted Contact Dealer.
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Faulty GSL neutral switch Contact Dealer.
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Interlock springs not pulling
interlock closed
Replace or reattach springs.
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Faulty switch on PARK Replace switch or adjust.
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Symptom: Insufficient road speed.
Ground speed limit is too low Increase limit.
Adjusting Ground Speed Limit, page
125
Symptom: Maximum ground speed is too slow.
Servo not adjusted properly Contact Dealer.
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Fault with wheel motor control Contact Dealer.
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GSL position sensor not calibrated or
damaged
Contact Dealer.
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Maximum speed limit is set at 10 mph Increase speed limit.
Adjusting Ground Speed Limit, page
125
Symptom: Steering is too stiff or too loose.
Steering chain tension is out of
adjustment
Adjust steering chain tension.
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Ball joints or steering linkage pivot stiff Replace or repair.
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TROUBLESHOOTING