Toro 650D Operator's Manual page 69

1.69
TROUBLE SHOOTING
PROBLEM
Differential lock non
operational.
Hydraulic oil system
overheating.
Incorrect brake operation.
TROUBLE SHOOTING
Continued.
POSSIBLE CAUSE
Defective switch.
Defective solenoid valve.
Defective wiring.
Blocked radiator screen.
Blocked oil cooler fins.
Blocked secondary screen.
Blocked engine radiator matrix.
Low relief valve setting.
Low oil level.
Brakes engaged.
Cutting cylinders tight on bottom
blades.
Defective fan or fan drive.
Faulty wheel motor brake assembly.
Worn brake discs.
1.69
REMEDY
Check switch and replace if neces-
sary.
Service or replace solenoid valve.
Check wiring/connections as
necessary.
Clean screen.
Clean fins.
Clean screen.
Clean matrix.
Have relief valve cleaned and
pressure checked. Consult
your Toro dealer.
Fill reservoir to correct level.
Disengage brakes.
Readjust settings.
Check fan operation and ser-
vice as required.
Consult your Toro dealer.
Replace brake discs.
Consult your Toro dealer.
111-1033TH051006