Engine Cooling: Diagnosis Isuzu Axiom I

INSPECTION

Make necessary repair and parts replacement if extreme wear or damage is found during inspection. Should any of the following problems occur, the entire water pump assembly must be replaced.

1. Crack in the water pump body
2. EC leakage from the seal unit
3. Play or abnormal noise in the bearing
4. Cracks or corrosion in the impeller

Scheme 3

1. Install gasket, clean the mating surface of gasket before installation.
2. Install water pump assembly and tighten bolts to the specified torque. Torque: 25 N.m (18 lb ft) Tightening order The tightening order in the illustration. NOTE: To prevent the oil leakage, apply the LOCTITE 262 or an equivalent, to the arrow marked fixing bolt thread.
3. Idle pulley Install idle pulley and tighten bolt to the specified torque. Torque: 52 N.m (38 lb ft)
4. Timing belt Install timing belt. Refer to «TIMING BELT»(ref-194298-S30508445852005092700000) .
5. Connect radiator inlet hose and replenish EC.
6. Connect battery ground cable.

Scheme 4

Suspend the thermostat in a water-filled container using thin wire. Place a thermometer next to the thermostat.

Do not directly heat the thermostat.

Gradually increase the water temperature. Stir the water so that the entire water is same temperature.

Confirm the temperature when the valve first begins to open.

Valve opening temperature: 74.5C - 78.5°C (166.1°F - 173.3°F)

Confirm the temperature when the valve is fully opened.

Valve full open temperature and lift: More than 8.5 mm (0.33 in) at 90°C (194°F)

Make necessary repair and parts replacement if extreme wear or damage is found during inspection.

Check drive belt for wear or damage, and replace with a new one as necessary.