TH4330,4290,4260
80
ENGINE
TROUBLESHOOTING
Problem
Possible Cause
Remedy
Starter motor does not
operate with key turned to
START
Range shift lever not in neutral
PTO control switch is in ON position
Broken safety switch
Discharged battery
Loose or dirty terminals
Broken main switch
Broken starter
Place range shift lever in neutral.
Turn off PTO control switch.
Consult your dealer.
Charge battery.
Clean and retighten securely.
Consult your dealer.
Consult your dealer.
Starter motor operates but
not at full speed
Discharged battery
Loose or dirty terminals
Defective ground
Improper oil viscosity
Defective engine
Charge battery.
Clean and retighten securely.
Clean and tighten starter mounting.
Replace with oil of proper viscosity.
Consult your dealer.
Starter motor operates but
engine does not start.
Electric fuel pump not operating
Electric fuel control not operating
Air in fuel system
Clogged fuel filter
Fuel is not being supplied
Incorrect preheating procedure
Defective engine
Replace fuse.
Consult your dealer.
Air-bleed fuel system.
Clean filter.
Check fuel level, open fuel valve.
Increase use of glow plugs.
Consult your dealer.
Irregular engine running
Air in fuel system
Clogged fuel filter
Clogged fuel injectors
Fuel line is leaking air
Fuel injection pump timing
Defective engine
Air-bleed fuel system.
Clean filter.
Consult your dealer.
Retighten clamps, replace defective pipes.
Consult your dealer.
Consult your dealer.
When decelerated, engine
stops
Incorrect low idle setting
Malfunctioning fuel injection pump
Improper valve clearance
Defective fuel injectors
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Engine over-speeds
Defective governor
Incorrect high speed setting
Engine oil is getting into combustion chambers
Consult your dealer.
Consult your dealer.
Consult your dealer.
Engine stops unexpectedly
during operation
Insufficient fuel supply
Defective fuel injectors
Defective fuel injection pump
Engine seizure due to low or poor oil
Electric fuel pump not operating
Fill tank and air-bleed fuel system.
Consult your dealer.
Consult your dealer.
(If engine can be turned by pulling fan belt,
fuel system is most probable causes.)
Replace fuse.
Engine overheats
Insufficient coolant
Broken or loose fan belt
Clogged grille, radiator screens
Clogged radiator fins
Defective thermostat
Insufficient engine oil
Top up coolant.
Adjust belt tension or replace.
Clean.
Clean.
Replace.
Inspect oil level and replenish.
Exhaust fumes are white
Clogged air cleaner
High engine oil level
Insufficient fuel delivery
Cold-running engine
Clean or replace elements.
Inspect oil level and correct.
Consult your dealer.
Allow to warm, check thermostat.
Exhaust fumes are too black
Poor fuel
Excessive fuel delivery
Insufficient fuel injector pressure
Insufficient combustion air
Replace with better grade.
Consult your dealer.
Consult your dealer.
Check, clean or replace elements.
Poor engine output
Seized fuel injectors and / or carbon deposit.
Insufficient compression or leaking valves
Incorrect valve clearances
Incorrect fuel injection timing
Insufficient fuel supply
Clogged air cleaner
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Check fuel system.
Clean or replace elements.
Oil pressure monitor is lit
during operation
Insufficient engine oil
Too low oil viscosity
Defective pressure switch
Clogged oil filter
Defective oil pump
Replenish
Replace with oil of proper viscosity.
Replace.
Replace element cartridge.
Consult your dealer.
Charging monitor is lit
during operation
Defective wiring
Defective alternator
Defective regulator
Defective battery
Loose or damaged fan belt
Correct loose or dirty terminals, short circuit,
poor ground etc.
Consult your dealer.
Consult your dealer.
Replace battery.
Adjust belt tension or replace.
Содержание TH4260
Страница 72: ...TH4330 4290 4260 72 FIG 6 34 3 FIG 6 34 4 ...
Страница 91: ...ISEKI TRACTOR 91 ...
Страница 92: ...TH4330 4290 4260 92 ...
Страница 93: ...WIRING DIAGRAM WIRING DIAGRAM WIRING DIAGRAM TH4260F ...
Страница 94: ...WIRING DIAGRAM TH4260FH ...
Страница 95: ...WIRING DIAGRAM TH4290F ...
Страница 96: ...TH4330 4290 4260 WIRING DIAGRAM TH4290FH 4330FH ...