MASSEY FERGUSON MF 135 - Page 66

TROUBLE-SHOOTING
TROUBLE-SHOOTING DIESEL TRACTOR
Engine Cranking Failure
1. Dual range shift lever not in '' neu-
tral" position.
2. Loose, grounded, shorted or broken
wiring. Check connections on all switches.
3. Discharged or weak battery.
4. Inoperative starting motor.
Engine Cranks but Fails to
Start-Fuel System
1. Lack of fuel in the tank. Fill tank
and" air-bleed" the system.
2. Excessive air in the fuel system.
"Air-bleed'' the entire fuel system.
3. Fuel shut-off control rod in the "off"
position.
4. Fuel filters "clogged". Replace
filter and "air-bleed" the system.
5. Faulty injector assembly. Have your
MF Dealer test and service or replace the
assembly.
6. Injection pump failure. Have your
MF Dealer check the pump.
7. Injection timing incorrect. Have
your MF Dealer correctly time the pump.
Engine Cranks but Fails to Start -
Air System
1. Air cleaner inlet tube restricted.
2. Plugged or "clogged" air cleaner.
Engine Operation Rough
1. Injection pump incorrectly timed.
2. Faulty injectors.
3. Faulty injection pump.
Excessive Engine Exhaust Smoke
1. Faulty injectors.
2. Incorrect injection pump timing.
3. Clogged air cleaner.
4. Improper valve adjustment.
5. Burned, worn or sticking valves.
6. Excessive operation at low engine
speeds.
Injection Pump Maximum Speed
Incorrect
1. Throttle linkage damaged. Replace
and adjust linkage.
2. Faulty injection pump governor.
Have your MF Dealer check the pump.
Loss of Power
1. Plugged fuel filter.
2. Worn rings, pistons or sleeves,
burned or sticking valves.
3. Faulty injection pump governor link-
age.
4. Faulty throttle or governor linkage.
5. Blown head gasket.
6. Brakes dragging.
7. Improper valve adjustment.
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