Cooling System: Description and Operation

Coolant system
The engine is liquid cooled by a mixture of water and anti-freeze circulating around the coolant passages. The coolant pump is mounted on the LH side of the cylinder block and is driven from the crankshaft nose by a three point belt drive (which includes the alternator). The pump is a fully assembled bolt-on unit. The coolant is fed into the cylinder block at two places via an external delivery pipe. The coolant is drawn from the cylinder head via a self-contained thermostat housing back to the radiator or recirculated according to the thermostat position.

Single or dual thermostatically controlled electric fans are used on air conditioned models. The radiator mounted thermostatic switch contacts close when coolant temperature exceeds approximately 200°F, energizing the cooling fan relay. The cooling fan relay then completes the circuit to the cooling fans. The cooling fans will operate regardless of ignition switch position.