Traction System Problems (continued)
Problem
Possible Cause
Corrective Action
The hydraulic fluid level in the hydraulic
tank is low (other hydraulic circuit
performance is affected as well).
Adjust the hydraulic fluid level.
The traction pump bypass valve(s) is
open or damaged.
Close or replace the traction pump
bypass valve(s).
One or more orifice or screen in piston
(traction) pump control assembly is
partially obstructed or damaged.
Clean or repair piston (traction) pump
passages.
The charge pressure is low (steering
and lift circuit performance is also
affected).
Verify charge pressure; refer to the
InfoCenter SERVICE–INPUT/OUTPUT
–TRACTION–TRACTION INPUTS
FRONT TRACTION and REAR
TRACTION readings while the machine
is stationary.
The traction pump charge relief valve is
leaking or damaged.
Clean or repair the charge relief valve.
Problem with the piston (traction) pump
control solenoid circuit exists.
Verify traction pedal sensor operation
and the machine wire harness traction
pedal circuit.
Verify the TEC output to the pump
control solenoids are occurring.
Test the machine wire harness pump
control solenoid circuits.
The traction pump relief valves are
leaking or damaged.
Clean or repair the piston (traction)
pump relief valves.
The traction pump is worn or damaged.
Verify traction pump operation; refer to
Traction Pump (P1 and P2) Tests in
the Hydraulic System chapter of this
manual.
The drive axle motor is worn or
damaged.
Repair or replace the drive axle motor.
No traction exists in either direction.
Note:
If a traction circuit component
has internal wear or damage, it
is possible that the other traction
components are also damaged.
An electrical problem exists in the
solenoid valve (SV1) circuit.
Test and replace the valve solenoid if
necessary.
Test the machine wire harness solenoid
valve (SV1) circuit.
Solenoid valve (SV1) in the main
manifold is leaking or faulty.
Clean the solenoid valve and replace
the seals
High range traction speed will not
engage.
Replace solenoid valve if necessary.
An electrical problem exists in the
solenoid valve (SV2) circuit.
Test and replace the valve solenoid if
necessary.
Test the machine wire harness solenoid
valve (SV2) circuit.
Solenoid valve (SV2) in the main
manifold is leaking or faulty.
Clean the solenoid valve and replace
the seals
Replace solenoid valve if necessary.
The parking brake cannot be
disengaged with engine running.
Troubleshooting: Traction System Problems
Page 3–28
Outcross 9060
18234SL Rev B
Summary of Contents for 07511AA
Page 4: ...Reader Comments Page 4 Outcross 9060 18234SL Rev B ...
Page 18: ...Safety Safety and Instructional Decals Page 1 10 Outcross 9060 18234SL Rev B ...
Page 38: ...Specifications and Maintenance Special Tools Page 2 20 Outcross 9060 18234SL Rev B ...
Page 96: ...Engine Service and Repairs Page 4 24 Outcross 9060 18234SL Rev B ...
Page 208: ...Hydraulic System Service and Repairs Page 5 112 Outcross 9060 18234SL Rev B ...
Page 294: ...Electrical System Service and Repairs Page 6 86 Outcross 9060 18234SL Rev B ...
Page 384: ......