Water Pump

(quoted from post at 05:09:32 04/12/16) A service manual sure would be helpful!

I have OH'ed lots of waterpumps in my time but never one of these, so don't take my thoughts as "gospel"!

In general, you would carefully support the casting in a press with the impeller "up" and use a pusher of appropriate size and press downward on the SHAFT. Measure (with a feeler gauge) the gap between the impeller and the casting so it can be put back together with the same gap.

As the unit bearing moves downward out of the casting, the impeller will come up against the casting and stop and you can continue to press the shaft and bearing downward and out of the impeller and main casting.

(Before trying this look for a snap ring or wire clip of some sort keying the unit bearing to the casting. I don't THINK this pump is set up like that, but better look before breaking something!)

Once it's apart, the pulley or pulley mounting hub can be pulled off. Note it's position, as well, so it can be pressed on the shaft of the new unit bearing so that the distance relationship between the sheave and the pump body casting is the same upon reassembly.

Clean things up, HOPEFULLY the kit will come with some instructions, press the unit bearing into the casting to the same depth as the original, and install the seal following instructions (HOPEFULLY) provided. Use an appropriate sleeve/pusher to press on the outer bearing shell, and NOT on the shaft, which would apply stress to the bearings.

Once that's done, press the pulley/hub onto the shaft to the previously measure location, and the same with the impeller.

When doing this, support one end of the shaft or another so no side load is placed on the bearings.

GOOD LUCK!

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