MacDon M155 Operators Manual - Manual (Page 413)

TROUBLESHOOTING
Symptom Problem Solution Section
Pump arms have broken shaft
or loose hardware
Repair or tighten.
Brakes binding or not
releasing fully Check pressure on brake release
valve (min. 200 psi [1379 kPa]).
Contact Dealer.
Low oil level Check oil reservoir level.
Checking and
Filling Hydraulic
Oil, page 360
Power hubs disengaged Engage final drives.
Final Drives, page
135
Damaged hydraulic lines
preventing proper oil flow
Replace damaged lines.
Ground speed range control
not working
Contact Dealer.
Contact Dealer.
Steering controls worn or
defective
Check GSL and steering for loose,
worn or damaged ball joints and
connecting rods.
5.7.3 Ground
Speed
Lever (GSL)
Adjustments,
page 276
and
5.7.4 Steering
Adjustments, page
278
Charge pressure relief valve
misadjusted or damaged Check the valve adjustment. Check
valve parts and seat.
Checking Charge
Pump Pressure,
page 368
Both wheels will
not pull in forward
or reverse
Failed pump or motor Contact Dealer. Contact Dealer.
169883
397
Revision A