MacDon M150 SP - Manual (Page 219)

TROUBLESHOOTING
* See your MacDon dealer
** Refer to Windrower Technical Manual
Form 169017 / 169087 / 169095
217
Revision C
SYMPTOM PROBLEM SOLUTION SECTION
Both Wheels Will Not Pull In
Forward Or Reverse
(Continued).
Charge pressure relief valve
misadjusted or damaged. Check the valve adjustment.
Check valve parts and seat.
7.12.6.2
Failed pump or motor. Contact MacDon Dealer. *
One Wheel Does Not Pull In
Forward Or Reverse.
One final drive disengaged. Engage final drive. 6.3.8.4
Pump arm or shaft are broken. Contact MacDon Dealer. *
Steering controls worn or defective.
Check GSL and steering for
loose, worn or damaged ball
joints and connecting rods.
7.7.3 &
7.7.4
Damaged hydraulic lines preventing
proper oil flow.
Contact MacDon Dealer. *
Brakes binding or not releasing fully.
Check pressure (min. 200 psi on
brake release valve.
**
Speed-range control not working. Contact MacDon Dealer. *
High pressure relief valve stuck
open, damaged seat. Check valve and clean or
replace.
**
Failed pump, motor or power hub. Contact MacDon Dealer. *
With Steering Wheel Centered,
One Wheel Pulls More Than The
Other.
Leakage at pump or motor.
Contact MacDon Dealer. *
Wheels not in same speed range.
Faulty relief valve. Repair or replace valve. 7.12.6.2
Excessive Noise From Drive
System.
Hydraulic line clamps loose. Tighten clamps. ---
Mechanical interference in steering
or ground speed linkage.
Adjust, repair, replace.
7.7.3 &
7.7.4
Brakes binding or not releasing fully.
Check pressure (min. 200 psi on
brake release valve.
**
Faulty pump or motor. Contact MacDon Dealer. *
Air in system. Check lines for leakage. ---
Hydraulic Oil Filter Leaks At
Seal.
Not properly tightened. Tighten filter element. 7.12.4
Damaged seal or threads. Replace filter or filter head. 7.12.4
8.6 STEERING AND GROUND SPEED CONTROL
SYMPTOM PROBLEM SOLUTION SECTION
Machine Will Not Steer Straight. Linkage worn or loose.
Adjust steering chain tension.
Replace worn parts, adjust
linkage.
7.7.4.2
7.7.4.1
Machine Moves On Flat Ground
With Controls In Neutral.
Neutral interlock misadjusted.
Parking brake not functioning.
GSL servo misadjusted.
GSL cable misadjusted.
Contact MacDon Dealer. *
Insufficient Road Speed.
Speed-range control in field
position.
Move to road position. 6.3.6.3
Steering Wheel Will Not Lock
With GSL In N-DETENT.
Transmission interlock misadjusted. Contact MacDon Dealer. *
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