LeeBoy 685D - Troubleshooting Common Problems

TROUBLESHOOTING CHART
The troubleshooting chart below identies the most common symptoms of mechanical problems. Fault codes are
also shown on the Digital Display unit on the Operator Control Panel. If the problem persists, contact your authorized
LeeBoy dealer for assistance or repair.
Table 5-4. Troubleshooting Chart
SYMPTOM CAUSE REMEDY
Engine difcult to start
or does not start.
Defective battery or low battery
charge.
Replace or charge battery.
Insufcient fuel supply. Fill fuel tank.
Wrong grade fuel.
Use only ULSD (Ultra-Low Sulfur Diesel) fuel with
a maximum sulfur content of 15 ppm (parts per
million).
Debris or dirt in fuel.
Drain small amount of fuel into a clean container.
Inspect for debris. If any is noted, drain and ush
fuel system. Change fuel lter.
Water in fuel Drain fuel. Change fuel lter and rell tank.
Worn piston rings or low compression. See your authorized dealer.
Blown head gasket. See your authorized dealer.
Faulty wiring.
Inspect to ensure wires are tight.
Repair or replace wiring if needed.
Starter solenoid doesn’t function
properly or faulty ignition switch.
Clean solenoid plunger.
Replace solenoid coil.
Replace or rebuild starter or solenoid.
Replace ignition switch.
Intake or exhaust system restricted.
Inspect, clean and remove any debris or foreign
objects in system.
Engine cranking speed too low.
Clean battery terminal connections.
Charge or replace battery.
Insufcient fuel supply to injector. Check fuel system. Clean or replace fuel lter.
Air in the fuel system.
Check for air leaks in the low-pressure side of the
fuel system.
Prime fuel system.
Engine turns over but
does not start.
Low fuel. Add fuel to fuel tank.
No voltage to fuel shut-off solenoid.
Voltage should be 9 volts with the ignition switch
in the ON or START position.
No fuel to injector pump. Check fuel supply system.
Fuel lter plugged or restricted. Replace fuel lter.
Intake or exhaust system restricted. Check for and remove restrictions.
Loose or dirty connections at
batteries.
Clean battery posts and cable ends. Reinstall
cables.
Wrong oil weight in low temperatures. Change oil and oil lter.
Maintenance
LeeBoy 685D Motor Grader5-44