Cooling System
HEAD” facing thermostat. Refer to Cylinder Head Installation on p. 197.

002445
- Cylinder head seal
Inspection
Inspect all parts for cracks, heat damage, or signs of corrosion. Re place damaged p arts. Clean debris from housing and parts.

000756
Assembly
Assembly is the reverse of disassembly. Pay close attention when performing the following additional tasks.
Coat threads of thermostat cover with Gasket Sealing Compound and install new O-ring. Install and tighten cover to a torque of 120 to 144 in. lbs. (13.5 to 16 N·m).
Pressure Relief Valve Servicing
The pressure relief valve assembly should be serviced at the same time as the thermostat.
Disassembly
Remove screws and cove r from pressure valve assembly.

002443
Remove the pressure relief valve assembly.

002459
Inspection
Inspect all parts for cracks, heat damage, or signs of corrosion. Re place damaged p arts. Clean debris from housing and parts.

002442
Pressure Relief Valve Assembly Components
Assembly
Assembly is t he re verse of disassembly. Pay close attention when performing the following additional tasks.
Install a new plunger seal squarely over ridge in housing.
Apply a light coat of Triple-Guard grease to a new cover o-ring and place in groove in housing.

002458
- Plunger seal
- Cover o-ring
