RAM 2500 Van V8-5.9L VIN Z (1997)
Thermostat: Service and Repair
Installation
1. Clean mating areas of intake manifold and thermostat housing.
2. Install thermostat (spring side down) into recessed machined groove on intake manifold.
3. Install gasket on intake manifold and over thermostat.
4. Position the thermostat housing to the intake manifold. Note the word FRONT stamped on the housing. For adequate clearance, this must be placed
towards the front of vehicle. The housing should be slightly angled forward after installation to intake manifold.
5. Install two housing-to-intake manifold bolts. Tighten bolts to 23 Nm (200 inch lbs.) torque.
CAUTION: Housing must be tightened evenly and thermostat must be centered into recessed groove in intake manifold. If not, it may result in a
cracked housing, damag4ed intake manifold threads or coolant leak.
6. Install upper radiator hose to thermostat housing.
7. Air conditioned vehicles:
a. Install generator. Tighten bolts to 41 Nm (30 ft. lbs.).
