Water pump is out.
In the end I believe in the end the issue was simply the fuel line that was on the way!
Regarding the water leak, I think the problem is that the surface of the bronze thrust washer is scored, and the carbon ring too.
I have new carbon ring, but it seems quite difficult to change it. So my plan is to try to fix the old one on the shaft somehow and turn it in the lathe to surface it flat.
For the bronze thrust washer, I plan to cut it flat by fixing the pump body on a table cutter. Hopefully the spring will compensate for the little that will be cut.
The bearing seems in good condition. But the shaft has some resistance as I believe that instead of a felt washer, a rubber oil seal has been installed previously behind the bearing. But I would prefer not to take off the bearing. So I might leave it in.
The oil seal might have been a later upgrade of the pump? it is listed in the pump spare scheme, even if not pictured.
In the spare drawing there are two felt washers, but may be later the inner one became a rubber oil seal?
The only think that might be lose, is the shaft in the rear bush. What do you think? it is a bit scored too.
I am not able to measure the ID of the bush, but is should be 1/2. but I don't know the real size.
(bush size found here:
http://www.ac2litre.com/ohaulcooling.html).
The shaft is 0.498 thou, so I have theoretically a clearance of 2 thou. but I don't have the tools to measure it.
thanks,
Eddie
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