MacDon M155 - Hydraulic and Traction Drive Problems

TROUBLESHOOTING
6.3 Hydraulics Troubleshooting
Symptom
Problem
Solution Section
Appropriate solenoids not being
energized by activating switch
Contact Dealer. Contact Dealer
Header or reel not
lifting
Contaminant in relief valve
Clean relief valve at cylinder
control valve.
Header or re
el lifts
but lacks po
wer
Relief pres
sure too low or
contaminan
tinreliefvalve
Check/adju
st/clean relief v alve at
cylinder co
ntrol valve.
Contact Dealer
HEADER DRIVE switch not
engaged
Engage HEADER DRIVE switch.
Engaging and
Disengaging the
Header, page 202
Flow controls adju sted too low
Toggle s
peed controls on CDM to
increas
e flow.
D-Series
: 4.6.7
Draper Sp
eed,
page 286, and
4.6.6 Ree
l Speed,
page 282
A-Serie
s: 4.7.1
Auger Sp
eed,
page 294
R-Serie
s: 4.8.1
Disc Sp
eed, page
302
Reel and/or
conveyor not
turning
Appropriate sole no id on flow
control block not being energized
Contact Dealer.
Reel and/or
conveyor turns
but lacks power
Relief pres s u re too low Check/adjust/clean relief valve.
Contact Dealer
Hydraulic oil cooling system not
working properly
Check/clean cooling box.
Maintaining
Engine Cooling
Box, page 358
Hydraulic oil
high-temperature
alarm
Faulty bypass valve
Clean or r ep lace. Contact Dealer
Hydraulic oil
low-temperature
alarm
Hydraulic oil too cold
Run engine until hydraulic oil
warms up.
—
147649 436 Revision A