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Maintenance
SYMPTOM
Engine cranks slowly
(continued).
Engine surges or stalls
frequently.
Engine misses, operates
erratically, or operates
poorly at low speed.
5-44
Table 5-3. Troubleshooting Chart (Cont.)
CAUSE
Starter motor malfunctions.
Air entering charge side of fuel system.
Fuel tank cap vent clogged.
Water or debris in fuel.
Fuel "jelled" due to low ambient
temperature.
Fuel filter clogged.
Return line from injection pump to tank
restricted.
Air filter elements clogged.
Fuel transfer pump clogged.
Injection pump or nozzle(s)
malfunctions.
Basic engine malfunction. Leaking
head gasket, sticking or burnt valves,
valve clearance or valve timing
incorrect, or worn or broken piston
rings.
Air entering charge side of fuel system.
Water or debris in fuel.
Fuel tank cap vent clogged.
Return line from injection pump to tank
restricted.
Slow idle speed set too low.
Fuel transfer pump malfunctions.
Injection pump or nozzle(s)
malfunctions.
REMEDY
Seized bushings, bent armature shaft, worn
bushings, and armature "dragging". Check
starter current draw. See your authorized
dealer for starter repair.
Check fuel filter for air bubbles. Tighten
fittings and connections. Inspect lines for
damage.
Remove cap. Listen for air entering tank
suddenly. Clean and replace cap.
Drain water from sump in fuel tank. Check
drained fuel for debris. Drain and flush fuel
system. Replace fuel filter.
Drain fuel system. Refill engine with correct
grade fuel. Replace fuel filter.
Check for debris in fuel system. Replace
filter.
Check line for kinks or damage. Check line
for debris. Clean with compressed air.
Clean or replace air filter elements.
Repair or replace pump. See your
authorized dealer.
See your authorized dealer.
Refer to Cummins engine manual.
Check fuel filter for air bubbles. Tighten
fittings. Inspect lines for damage.
Drain water from sump in fuel tank. Check
drained fuel for debris. Drain and flush fuel
system. Replace fuel filter.
Remove cap. Listen for air entering tank
suddenly. Clean and replace cap.
Check line for kinks or damage. Check line
for debris. Clean with compressed air.
Check for bent, worn, or loose speed
control linkage. Repair as needed. Adjust
linkage and reset slow idle speed.
Repair or replace fuel transfer pump.
See your authorized dealer.
LeeBoy Model 695 Motor Grader
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