Isuzu 1999 RODEO Workshop Manual page 588

6B–6 ENGINE COOLING (X22SE 2.2L)
Removal
1. Disconnect battery ground cable.
2. Drain engine coolant from the radiator and engine.
3. Disconnect radiator hose from the inlet pipe.
4. Remove thermostat housing.
Inspection
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 92°C (197.6°F)
Confirm the temperature when the valve is fully opened.
Valve full open temperature 107°C (224.6°F)
Make necessary repair and parts replacement if extreme
wear or damage is found during inspection.
Thermostat
Installation
1. Before installing thermostat, coat sealing surface with
silicon grease.
2. Install gasket.
3. Install thermostat housing and tighten bolts to the
specified torque.
Torque: 15 N·m (11 lb ft)
4. Installation rubber hose.
5. Replenish engine coolant (EC).
6. Start engine and check for EC leakage.
031RW012