Steering And Ground Speed Control Troubleshooting - MacDon M1170 Operator's Manual

7.6 Steering and Ground Speed Control Troubleshooting

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