oldsmobile Workshop Repair Guides

Oldsmobile Workshop Service and Repair Manuals

Water Pump > < Cooling - Thermostat Design Change|Page 2893
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Thermostat: Service and Repair

1. Disconnect battery negative cable.
2. With engine cool, drain engine coolant below thermostat level.  Never open cooling system with engine hot. Failure to follow this warning may

cause personal injury.

3. Disconnect radiator hose from thermostat housing.
4. Remove thermostat housing retaining bolt(s), then the housing, gasket and thermostat.
5. Reverse procedure to install noting the following:

a. Prior to installation, ensure thermostat gasket area is thoroughly clean.
b. Install thermostat with new gasket.
c. Tighten thermostat housing retaining bolt(s) to specifications.
d. Refill and bleed cooling system as needed.

Water Pump > < Cooling - Thermostat Design Change|Page 2893