Troubleshooting
337
Pump
The pump is operated by a button switch located on the control panel. When it is engaged, the switch
turns green.
Three conditions must be met for the pump to engage and the switch to turn green:
Air pressure must be at approximately 70 PSI
Engine speed must be lower than 900 RPM
Emergency S
TOP
button (red) must be pulled out
Air pressure condition is verified by a pressure switch, and engine speed, by the transmission control
module (TCM).
If the pump does not engage when the pump switch is turned on, it may be related to a voltage supply
problem in the pump circuitry.
The following test will help resolve pump-related problems. Prior to the test, ensure that all these
conditions are met:
Parking brake applied
Engine is running (idle speed)
Arm does not respond to
joystick (assuming that the
pump switch is ON)
Cut off or defective power
cables
Follow wires on the electrical
schematic for 12-volt supply (move
joystick to get signal).
Faulty joystick
Contact Labrie
Plus
.
Packer moves forward but
stops at end of stroke
Packer wear pads are worn out Replace wear pads (see
Packer extend proximity switch
needs adjustment
Adjust packer extend proximity
switch.
Packing is insufficient
Low hydraulic pressure
Adjust hydraulic pressure. Call
Labrie
Plus
for support.
Packer proximity switches are
not properly set up
Verify and adjust packer proximity
switches (see
Loss of pressure due to leak
inside cylinder
Perform a cylinder leak test (see
Detecting Cylinder Internal Leaks
Optional regeneration valve
malfunctioning
Inspect regen valve and/or adjust
pressure (see
Problem
Possible causes
Solution
Summary of Contents for EXPERT
Page 1: ...EXPERT TM MAINTENANCE MANUAL...
Page 2: ......
Page 3: ...EXPERT MAINTENANCE MANUAL...
Page 10: ...viii Table of Contents...
Page 18: ...8 Introduction...
Page 244: ...234 General Maintenance...
Page 251: ...Lubrication 241 Figure 4 11 Glass compartment lubrication chart optional...
Page 252: ...242 Lubrication Figure 4 12 EXPERT lubrication chart...
Page 264: ...254 Lubrication...
Page 320: ...310 Hydraulic System...
Page 357: ...Troubleshooting 349...
Page 358: ...350 Troubleshooting...
Page 386: ...378 Multiplexing...