MacDon M1170 - Traction Drive Troubleshooting; Windrower Fault Codes

214733 410 Revision A
7.5 Traction Drive Troubleshooting
Problem Solution
Section
Symptom: The warning alarm sounds and the low charge pressure warning appears on the Harvest Performance
Tracker (HPT).
Low hydraulic oil level
Stop engine, and add oil to hydraulic
system.
5.7.3 Checking Hydraulic Oil, page 290
Low hydraulic pressure Contact Dealer. Contact Dealer
Faulty sender Contact Dealer. Contact Dealer
Symptom: Wheels lack necessary ability to pull on a grade or when pulling out of a ditch.
Internal pump or motor damage Contact Dealer. Contact Dealer
Insufficient torque at drive wheels
Maintain engine rpm, decrease GSL
setting.
—
Loose or worn controls Check controls. Contact Dealer
Brakes binding or not releasing fully
Check charge pressure. Contact Dealer
Relief valve in tandem pump dirty or
damaged
Replace relief valve. Contact Dealer
Symptom: With the steering wheel centered, one wheel pulls more than the other wheel.
Leakage at pump or motor Contact Dealer. Contact Dealer
Binding or interference with controls
under cab
Contact Dealer. Contact Dealer
Faulty relief valve Repair or replace valve Contact Dealer. Contact Dealer
Symptom: Both wheels will not pull in forward or in reverse.
Loose hardware on pump controls Repair or tighten. Contact Dealer
Brakes binding or not releasing fully Check charge pressure. Contact Dealer
Low oil level and low charge pressure Check oil reservoir level. 5.7.3 Checking Hydraulic Oil, page 290
Wheel drives disengaged Engage wheel drives.
Servo input loose Check servo. Contact Dealer
Failed pump Contact Dealer. Contact Dealer
Symptom: One wheel will not pull in forward or in reverse.
Broken pump arm or shaft Contact Dealer. Contact Dealer
Steering controls worn or defective
Check GSL and steering for loose,
worn or damaged ball joints and
connecting rods.
Contact Dealer
High pressure relief valve stuck open,
damaged seat
Contact Dealer. Contact Dealer
Brakes binding or not releasing fully Check charge pressure. Contact Dealer
Failed pump, motor or final drive Contact Dealer.
Contact Dealer
TROUBLESHOOTING