49
4...MAINTENANCE
Engine will not
crank over
Engine cranks
over, but will not
start
Loader starts, but
foot pedals will
not release
Engine will not
stop when the
key is tuned OFF
Battery failure
Battery cable
failure
Starter failure
Fuse burnt
Defective relay
Ignition switch
failure
Auxiliary
hydraulics
engaged
Defective glow
plug relay
Defective glow
plugs
Broken connection
or defective wire
No fuel
Electro solenoids
not releasing valve
spools
Defective fuel
solenoid switch
Check battery, charge or
replace
Check for loose or
corroded connectors.
tighten and clean as
required. Use di-electric
grease to prevent
corrosion.
Check continuity of cables
and replace if defective
Repair or replace
Check and replace
Check relay continuity if
defective, replace
Check continuity and if
defective, replace
Engine will smoke but not
run unassisted by starter.
Disengage aux. hydraulics
Check continuity and if
defective, replace
Check continuity and if
defective, replace
Disconnect the ROPS
harness from the engine
harness. Open the dash
panel and check continuity
of the circuit not
functioning properly in
both engine and ROPS
harness.
Check fuel levels and
system
Defective solenoid or
solenoid lock. Loosen
screws and readjust
Check and correct
6. Electrical
Control levers do
not operate
smoothly
Internal pump
and/or motor
leakage
Control lever
linkages out of
adjustment
See troubleshooting
hydrostatic system
Adjust control lever
linkages
4. Control Levers
Brake will not
hold machine
Brake will not
release machine
Brake valve will
not release
pressure
Brake parts
damaged or worn
Brakes are
disengaged
No power to brake
valve solenoid
No pressure in
supply line to
brake valve
Brakes are
engaged
Verify position of override
Sect 4.6 - 5
Consult your Dealer or
Thomas Service Dept.
Engage parking brake
Check fuse, If fine, consult
Dealer or Thomas Service
Dept.
Consult your Dealer or
Thomas service Dept.
Release brake
5. Park Brake
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