I left this job with a generous amount of penetrating oil on the water thrower, to do its job in the joint between the water thrower disc and the pump’s axle. And while the penetrating oil was doing its job, I fabricated a simple tool from a flat steel strip (think very thin wrench) to support the water thrower as much as possible while hammering the axle out. But I forgot the folded edge of the disc. Luckily there was enough space for the tool between the oil seal and the bearing. And using the oil seal to spread the load, the water thrower disc came of undamaged. Removing the oxidation on the axle shaft above the water thrower on a lathe certainly helped here!
And with all parts removed from the shaft they could be cleaned in preparation for the final stage; reassembly of the water pump's various parts.
The reassembly of the water pump should have been a piece of cake. And it was, right up to the second to last part; the water seal. But while trying to push it in position by hand I managed to break the carbon ring. This might be explained by the fact that the seal came from my spare parts and probably was well over 30 years old. And as such the rubber had probably become too hard and the carbon seal ring to brittle?
Luckily I did have another water pump reconditioning kit, so that was robbed of its coolant seal. This time I used a small round plastic container to press the seal into the bearing cage without breaking the carbon seal. Sadly the plastic container slipped with less than 1 millimetre to go, and the second coolant seal was fit for the bin.
I am glad these seals are now available separately, so a new one was ordered. But it meant some extra time lost while waiting for the new seal to arrive..
This time the water seal went into the brass bearing cage without any problems. Which left me with the final parts. The impeller and its O-ring.
Next job is getting the spanners out and replacing ‘t Kreng’s water pump. This is scheduled for the coming weekend.
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