Page 114
65-J Desel - Servce & Parts Manual
February 2021
Secton 19 - Troubleshootng
No drive operation
Planetary hub bypass engaged
Check bypass plates located in the center of each planetary hub.
Should be convex. Turn over if not.
System interlock
Check EZ-Cal HELP messages for interlock
Hydraulic oil incorrect for severe
low temperatures
Use hydraulic tank warmer if equipped. Operate drive continuously
until drive begins to operate.
No drive operation
Drive Valve (on drive pump) not
energized
Check Drive output from VCCM Module VP5 and VP6.
Check for power at valve coils located on top of the drive pump.
Drive Valve (on drive pump) not
shifting
Check drive valve for contamination
Brakes not releasing (system
under pressure when drive
attempted)
Check brake valve and brake pressure. See hydraulic diagram for
location.
Drive joystick output failure
Check drive joystick output from GP400 (see 2d2, P10-1) check
joystick enable trigger operation, Check wire connections.
Low pump stand-by pressure
Check at main manifold port GCP (see hydraulic Diagram).
Adjust stand-by pressure to 300 PSI (21 bar).
Incorrectly adjusted or worn
hydraulic drive pump
See Section 25 - Hydraulics for pump adjustment. Inspect or replace
pump.
No drive with platform
elevated
Unit out of level
Lower boom and operate on more level surfaces.
FWD MIN, REV MIN setting
incorrect
Reset drive speeds using EZ-Cal
Hydraulic oil incorrect for severe
low temperatures
Use hydraulic tank warmer if equipped. Operate drive continuously
until drive begins to operate.
Low pump stand-by pressure
Check at main manifold port GCP (see hydraulic Diagram).
Adjust stand-by pressure to 300 PSI (21 bar).
System interlock
Check EZ-Cal HELP messages for interlock
**CE rated models
Axles not parallel
Reposition machine on flat ground
Slow drive with platform
in stowed position and
boom retracted
Slow speed enabled
Check speed switch in platform box. Check 2-speed valve located on
the main manifold (see hydraulic diagram).
Hydraulic oil incorrect for severe
low temperatures
Use hydraulic tank warmer if equipped. Operate drive continuously
until drive begins to operate.
Boom Retract proximity switch
failure
Check for power ground & signal output to Proximity Switch located
inside the rear of boom. Also check EZ-Cal 2C1, P14-10 for input.
Low pump stand-by pressure
Check at main manifold port GCP (see hydraulic Diagram).
Adjust stand-by pressure to 300 PSI (21 bar).
FWD MAX, REV MAX setting
incorrect
Reset drive speeds using EZ-Cal
Wheel motor not functioning
correctly
Inspect wheel motors for damage or wear.
Poor grade-ability or
drive performance
High Speed enabled
Check Speed Switch
Wheel motor not functioning
correctly
Inspect wheel motors for excessive bypass or shift not working
properly
Hydraulic oil incorrect for severe
low temperatures
Use hydraulic tank warmer if equipped. Operate drive continuously
until drive begins to operate.
Planetary hub bypass engaged
Check bypass plates located in the center of each planetary hub.
Should be convex. Turn over if not.
Low pump stand-by pressure
Check at Brake/Axle manifold, should be 300psi (21 bar).
Adjust stand-by pressure to 300 PSI (21 bar).
Incorrectly adjusted or worn
hydraulic drive pump
See Section 25 - Hydraulics for pump adjustment. Inspect or replace
pump.
Drive in one direction
only
Drive valve not energizing in one
direction
Check 12 volts to coil. Check coil. Check valve function (located on
top of drive pump).
No output from VCCM Module
Check output from VCCM VP5 and VP6
Drive joystick output failure
Check drive joystick output from GP400 (see 2d2, P10-1)
Содержание 65-J Diesel
Страница 1: ...Part 95105 February 2021 Serial Number Range 14800000 Up Service Parts Manual 65 J Diesel ART_4883 ...
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