T100 Pickup 2WD L4-2.7L (3RZ-FE) (1994)
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Thermostat: Service and Repair
1.
Drain engine coolant, then remove upper radiator hose from engine.
2.
Remove engine water inlet, thermostat and O-ring gasket.
3.
Reverse procedure to install. Use new O-ring. Ensure bleed hole or valve is facing upward.