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Maintenance
SYMPTOM
Engine emits excessive
black or gray exhaust
smoke.
Excessive blue or white
exhaust smoke.
Detonation (excessive
engine knock).
Abnormal engine noise
(rattle, knock, or squeal). and
repair leaks.
5-46
Table 5-3. Troubleshooting Chart (Cont.)
CAUSE
Restricted air filter element.
Incorrect grade of fuel.
Engine overloaded.
Turbocharger gasket leakage.
Incorrect injection pump timing.
Excessive fuel delivery. Injection pump
or nozzle(s) malfunctions.
Engine will not start. Incorrect grade of
fuel used.
Injection pump or nozzle(s)
malfunctions.
Basic engine malfunction Excessive oil
consumption.
Stuck starting aid solenoid or switch.
Injection pump timing or pump advance
faulty.
Incorrect fuel (gasoline mixed with
diesel fuel).
Low engine oil level.
Oil viscosity too low for high ambient
temperatures.
Fuel in engine oil.
Loose or worn hydraulic pump drive
coupling.
Injection pump timing incorrect.
Turbocharger bearing or turbine
damaged.
Excessive valve clearance.
Internal engine component wear.
REMEDY
Check, clean or replace air filter elements.
Drain and flush fuel tank and fill with correct
grade of fuel. Replace fuel filter.
Remove load. Run at fast idle to clear the
engine.
Repair or replace. See your authorized
dealer.
Repair or replace pump. See your
authorized dealer.
See your authorized dealer.
Cranking speed too slow.
Drain and flush fuel tank and refill with
correct grade of fuel. Replace fuel filter.
See your authorized dealer.
Refer to Cummins engine manual.
Repair or replace solenoid or switch.
See your authorized dealer.
Drain and flush fuel tank and refill with
correct fuel. Replace fuel filter.
Fill reservoir to correct level.
Drain and refill reservoir with correct
weight oil.
Drain and refill reservoir with correct oil.
Check fuel system to find le
Repair or replace damaged coupling.
See your authorized dealer.
Remove turbo air inlet hose and check
vertical movement of shaft. Repair or
replace shaft. See your authorized dealer.
Adjust clearance.
Refer to Cummins engine manual.
LeeBoy Model 695 Motor Grader
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