Hydraulics Troubleshooting - MacDon M105 Operator's Manual

6.3 Hydraulics Troubleshooting

Symptom Problem
Appropriate solenoids not being
energized by activating switch
Header or reel not
lifting
Contaminant in relief valve
Header or reel lifts Relief pressure too low or
but lacks power contaminant in relief valve
HEADER DRIVE switch not
engaged
Reel and/or
conveyor not
Flow controls adjusted too low
turning
Appropriate solenoid on flow
control block not being energized
Reel and/or
conveyor turns Relief pressure too low
but lacks power
Hydraulic oil cooling system not
Hydraulic oil
working properly
high-temperature
alarm
Faulty bypass valve
Hydraulic oil
low-temperature Hydraulic oil too cold
alarm
Header or reel lifts
Air in system
unevenly
169890
TROUBLESHOOTING
Solution
Contact Dealer.
Clean relief valve at cylinder
control valve.
Check/adjust/clean relief valve at
cylinder control valve.
Engage HEADER DRIVE switch.
Toggle speed controls on CDM to
increase flow.
Contact Dealer.
Check/adjust/clean relief valve.
Check/clean cooling box.
Clean or replace.
Run engine until hydraulic oil
warms up.
Fully raise header or reel and hold
switch.
325
Section
Contact Dealer.
Contact Dealer.
Engaging and
Disengaging the
Header, page 124
D-Series:
4.6.7
Draper Speed,
and
page 171,
4.6.6 Reel Speed,
page 169
A-Series:
4.7.1
Auger Speed,
page 179
Contact Dealer.
Maintaining
Engine Cooling
Box, page 250
Contact Dealer.
—
4.4.1 Header
Safety Props, page
117
Revision A