Isuzu AU-4LE1T Maintenance Manual page 105

21. Cooling system circuit Clean the cooling system circuit every 12 months or 1000 hours.
cleaning
22. Radiator filler cap Check radiator pressure cap periodically for proper operation according to the
equipment manufacturer's specifications.
function check
23. Electrolyte level check Replenish with distilled water if necessary.
Clean the terminals.
24. Battery cleaning
25. Battery charge Ammeter registration goes to plus (+) side while engine running. In the lamp type, the
lamp is completely being off while engine running.
condition
Check charging circuit if the lamp is not off.
Check according to the equipment manufacturer's specifications.
26. Electrolyte gravity
check
Check wear condition of brush and commutator.
27. Starter and alternator
check and cleaning
Check according to the equipment specifications.
28. Wiring and connection
check
Check preheating condition of the system.
29. Preheating condition
check
Change element according to the manufacturer's specifications.
30. Air cleaner element
replacement
Check turbocharger every 1500 hours. (Clean blower as necessary.)
31. Turbocharger check
100