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 Set the manual mode to
ON and set the manual
voltage to 5 V. Does an
object made from iron
attach to the solenoid?
Yes Go to step 6.
No Do a check of the wiring
harness. If there is
damage to the wiring
harness, repair or replace
the wiring harness.
6 Calibrate the hydraulic
valve. Does pressure
increase in the hydraulic
system?
Yes Diagnostics complete.
No Go to step 7.
7 Do a check of the
hydraulic density cylinder.
Does it operate correctly
with no leaks?
Yes Go to step 8.
No Replace the hydraulic
density cylinder.
1 General
SimplEbale
79037906A
35