Isuzu 4LE2 - Cleaning the Radiator Exterior; Fuel Filter

5-21
INSPECTION AND MAINTENANCE
10. When the engine has cooled down, the inside of the radiator will be at a
negative pressure and coolant will automatically be supplied to the radiator
side from the reserve tank. After making sure that the coolant has cooled down,
slowly remove the radiator cap and if the coolant level has lowered, add the
coolant up to the radiator filler opening. If the coolant level is abnormally low,
check for coolant leaks.
11. Firmly close the radiator cap.
12. Fill the reserve tank with the coolant up to the specified level, and close the cap
of the reserve tank.
Cleaning the Radiator Exterior
When the radiator fin is clogged with debris such as dirt and dry grass, it may
interrupt the air flow and cause overheat.
Periodically check for the clogging condition, and when clogging is observed, clean
the radiator fins with tap water.
Fuel Filter
The fuel filter has the function of removing debris or moisture in the fuel. The fuel filter
has a significant impact on the performance and service life of the engine and fuel
economy, so use of the "Isuzu genuine parts" is recommended.
Also, depending on the machine, an electromagnetic fuel pump which incorporates a
fuel filter may be equipped.
Electromagnetic Fuel Pump
→ Refer to Page 5-26
CAUTION
When moisture is not discharged, starting difficulties may be caused due to
freezing.
Because clogging of the fuel filter element could cause a decrease in engine
output, engine failure, engine stopping, or could cause the engine failure
indication light to come on, perform periodic inspection and maintenance.
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Periodic Inspection and Maintenance
List → Refer to Page 5-36
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