Service Manual 250-300 HP 3.4 L E-TEC Cooling System [Pressure Relief Valve Servicing]

The pressure relief valve assembly should be ser viced at the same time as the thermostats.

Disassembly
Remove hose clamps and hoses from pressure valve.

1. Hoses

Remove screws securing the bracket to power head. Remove the pressure valve housing.

PRESSURE RELIEF VALVE SERVICING Remove the bracket and the cap from the housing. Remove the pressure valve assembly.

1. Bracket
2. Cap

Inspection

Inspect all parts for cracks, heat damage, or signs of corrosion. Replace damaged parts. Clean debris from housing and parts.

Assembly
Assembly is the reverse of disassembly. Pay close attention when performing the following additional tasks.

Tighten bracket and cap screws to a torque of 60 to 84 in. lbs. (7 to 9.5 N·m).

Install valve on powerhead. Tighten nuts to a torque of 60 to 84 in. lbs. (7 to 9.5 N·m). Install hoses and secure with clamps.