Isuzu AU-4LE1T, Maintenance Manual

Page: 104 / 126

99
10. Fuel filter element
replacement
Change element every 500 hours.
★
Shorten depending on fuel management.
11. Water sedimenter
element cleaning
Clean the water sedimenter element every 500 hours.
★
Shorten depending on fuel management.
12. Electromagnetic pump
filter cleaning
Replace the paper-type filter at intervals of 500 operating hours. Clean the steel
mesh-type filter at intervals of 500 operating hours.
★
Shorten depending on fuel management.
13. Injection nozzle check Clean the injection nozzle tips every 1500 hours. (This is a required maintenance)
Check injection opening pressure and spray condition.
14. Coolant level and
fouling check
Check coolant level and add coolant if necessary.
15. Coolant leakage check Repair part for coolant leakage.
16. Radiator filler cap
fitting condition
The radiator cap must be installed tightly.
17. Fan belt tension check Check and adjust fan belt deflection. Look for cracks, fraying and wear.
18. Coolant temperature
registration
Coolant temperature is normal at about 75 to 90°C (167 to 194°F). Check and repair
the cooling system if coolant temperature is abnormal.
19. Coolant replacement
Change coolant at intervals of 12 months if coolant is long life coolant (LLC).
20. Intercooler and
radiator external face
cleaning
According to the equipment manufacturer’s specification.