Hydraulic pressure not stable
Step Diagnostic Result Action
1 Was the air removed from
the hydraulic valve after
repairs on the hydraulic
system, or before the first
start of the machine?
Yes Calibrate the hydraulic
valve. See Calibrations.
No Remove the air from the
hydraulic system. Go to
step 2.
2 Is the hydraulic pressure
stable?
Yes Diagnostics complete.
No Calibrate the hydraulic
valve. To calibrate the
hydraulic valve, see the
Calibrations section.
Hydraulic system not building pressure
Step Diagnostic Result Action
1 Set the PTO to ON, set
the manual mode to ON
and set the manual
voltage to 5 V. Does
pressure increase in the
hydraulic system?
Yes Go to step 2.
No Go to step 3.
2 Increase the engine rpm
to set the PTO speed to
the standard operation
speed. Is the PTO speed
on the display correct?
Yes Go to step 4.
No See PTO Diagnostics.
3 Set the manual mode to
ON and set the manual
voltage to 5 V. Use a
multimeter to do a check
of the solenoid valve. Can
the multimeter find a 5 V
electrical voltage?
NOTE: The voltage
measured must be ± 1 V
from the voltage that
shows on the terminal.
Yes Go to step 5.
No Replace the solenoid.
4 Is the pressure sensor in
fault mode or does the
display show 0 psi?
Yes Do a check of the
pressure transducer.
Replace the transducer if
necessary.
No Go to step 6.
5 Troubleshooting
SimplEbale
87
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