Troubleshooting - LeeBoy 695 Operation, Service And Parts Manual

TROUBLESHOOTING

The troubleshooting chart below identifies the most common symptoms of failure. Use this chart to help identify the
failed component.
NOTE: The following troubleshooting solutions include common problems encountered with
diesel engines. For additional information and troubleshooting procedures, see the engine
manufacturer's operation and maintenance manual.
SYMPTOM
Engine cranks but does not start,
or starts hard.
Engine cranks slowly.
LeeBoy Model 695 Motor Grader
Table 5-1.Troubleshooting Chart
CAUSE
Fuel tank empty.
Water in fuel or water frozen in fuel
lines. Water frozen in fuel filter.
Fuel tank cap vent clogged.
Debris or dirt in fuel.
Wrong grade fuel for low ambient
temperature.
Air entering charge side of fuel
system.
Fuel transfer pump malfunctions.
Air filter elements restricted with dirt,
snow, or water.
Injection pump malfunctions.
Injection nozzle(s) malfunctions.
Worn piston rings or low
compression.
Blown head gasket.
Wrong weight oil for low ambient
temperature.
Loose or dirty connections at
batteries.
Loose or dirty connections at starter.
Batteries discharged or failing to
take a charge.
Maintenance
REMEDY
Check fuel level and fill as required
Thaw and/or drain water from fuel tank
sump. Thaw ice in fuel lines and drain.
Install new fuel filter
Remove cap. Listen for air entering tank
suddenly. Clean and replace cap.
Drain small amount of fuel from tank
sump into clean container. Inspect for
debris. Drain and flush fuel system and
change fuel filter.
Fuel "jelled" in tank or lines. Warm
machine. Drain fuel system and change
fuel filter. Refill tank with correct fuel.
Check for bubbles in fuel filter. Tighten
connections. Inspect fuel lines for
damage.
Repair or replace fuel transfer pump.
Clean or replace filter elements.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
Drain and refill with correct weight oil.
Change oil filter.
Clean battery posts and cable ends.
Reinstall cables.
Clean connections at start relay and
starter.
Disconnect batteries from machine
and each other. Recharge batteries
separately. Replace both batteries if
either fails to charge. Check alternator
output (28 volts), wiring for shorting to
ground, and alternator tension. Repair
or replace components as required.
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