The centrifugal-type water pump (Fig. 1) circulates the
engine coolant through the cylinder block, cylinder head,
The sealed type ball bearing is filled with lubricant at the
radiator, and the oil cooler. The drive end of the pump
time it is assembled to the pump shaft, and no further
shaft is supported by a sealed double-row combination
lubrication is required.
radial and thrust ball bearing. The pump shaft serves as
the inner race of the bearing.
Remove Water Pump
The water pump uses a ceramic insert and spring
Refer to Figs. 2 and 3 and remove the pump as follows:
loaded seal assembly. The spring-loaded water pump
seal assembly bears against the insert. The ceramic
1. Open the drain cock in the pump body and drain the
insert prevents coolant from passing along the shaft,
which does not include a slinger, to the sealed ball
2. Loosen the hose clamps and slide the water pump
inlet hose back against the pump cover.
The impeller is a press fit on one end of a stainless steel
3. Remove the two bolts and lock washers that attach
the pump outlet flange to the cylinder block. Remove
the flange and packing ring.
The pump is mounted at the front end of the blower (Fig.
2) and is driven by the lower blower rotor shaft. The
4. Remove the three bolt and seal assemblies that
drive coupling, pressed on the end of the pump shaft,
attach the pump to the blower assembly.
has an integral oil thrower that shrouds the flange end of
the pump body and deflects the oil away from the
5. Withdraw the pump and remove the gasket.
Fig. 2 - Water Pump Mounting
Fig. 1 - Water Pump With Ceramic Insert in Impeller