Labrie EXPERT Maintenance Manual page 342

334 Troubleshooting
Problem
Cavitation, excessive noise
or vibration of the pump.
The pump (
engage
No hydraulic pressure
Possible causes
Not the proper grade of oil
Shut-off valve on hydraulic tank Fully open the shut-off valve on the
Low oil level
Oil too thick
Air in the system
Particle contamination or dirty
strainer
Blocked suction hose
) does not Red emergency S
PTO
Engine speed higher than
900 rpm
Electrical failure
Faulty electric dump valve
Pump not engaged
Low oil pressure
Empty oil and refill with anti-
foaming oil. See Recommended
Lubricants on page 235 and
Emptying Hydraulic Tank on
page 280.
hydraulic tank. See Prior to Start Up
on page 15.
Add oil to the required level. See
Replacing Hydraulic Oil on page 283.
See Recommended Lubricants on
page 235 for proper type of oil to
use. See also Emptying Hydraulic
Tank on page 280.
See Pump Cavitation on page 338.
Clean the strainer and change the
return filter. Fill with clean oil. See
Cleaning Strainer on page 280,
Replacing Filter Elements on
page 282, and Replacing Hydraulic
Oil on page 283.
Take an oil sample for further
analysis (see Testing Hydraulic Oil
on page 237).
Unblock or replace the hose.
button(s) Ensure that the red button on
TOP
packer control station is pulled out.
Reduce engine speed below
900 rpm. If the speed cannot be
reduced under 900 rpm, contact
your local chassis dealer.
Check fuses inside the control panel
and the main fuses near the battery.
See Pump on page 337.
Replace the electric dump valve.
Turn on the
See Hydraulic Pressures on page 288.
Solution
switch.
PTO