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TR2/3/3A water pump re-assembly

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sp53

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Well I got engine fired up, but the old back up water pump leaked also, so I shut it down. If I actually do rebuild the pump, my question is did you guys pull the impeller off the back and re- solder it or just push the guts bearings and all out of the pump front to back. I had 2 old trashy pumps that I knocked the guts with a soft hammer that way, but the inner snap ring gets toasted in the process. Actually I do not see how to get access to the inner snap ring. It is probably not a big deal because I can just get another small inner snap ring. Moreover, if rebuilt this way it looks to me that I should be able to leave the impeller on, put a new snap ring in and push the complete assembly back in the housing from the back, put the big snap ring on and be good to go. However, I do see a large gap on the shaft between the rubber seal and what is called the spinner washer and that does not look correct. Perhaps the new seal is larger or the spinner deal is larger and would fix this. Anyways before I take my other 2 pumps in and have the pulley pushed off and if advised have the shafts pushed out from the front to the back maybe I can get some input. I was also thinking about calling the rebuild guys to ask questions and buy parts but I do not want to waste their time.
 
Unless money is an object-or you want the satisfaction(?) of doing it yourself- wouldn't you be better off ordering a new or reconditioned pump from one of the Big Three rather than cobbling together parts of old pumps and having to do it all over again when the pump leaks?
 
If you don't have a press, I'd recommend getting a new/rebuilt pump. With a press the impeller comes off easily using a bearing puller. I have not resoldered any of my impellers, but that only takes a minute with a torch.

My pumps had a small hole to use a punch from the outside to unseat the snap ring.
 
Thanks to youtube there is a good (imo) video on the rebuild process. It's not Triumph but the water pump design appears about the same. An enviable press shown but any press and a few tools will do.
https://www.youtube.com/watch?v=U1x3-R2l03Q

Tom
 
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