Fill the engine with Heavy Duty Coolant. Refer to Pro-
cedure 1-09. Start the engine, and check for leaks.
Thermostat Seal (1-31)
Inspection
Visually inspect the thermostat seal for cracks, corrosion,
or other damage. Replace if necessary.
Removal
Remove the thermostat seal. Avoid damaging the ther-
mostat cover.
Clean and inspect the thermostat housing for cracks,
pitting, or other damage.
Replace if damage is found.
Thermostat Seal (1-31) Section 1 - Cooling System
N14Page 1-68
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