Tim,
I seem to recall seeing water pump rebuilding instructions in the Complete
Official Sprite/Midget manual. To do it correctly, you really should have a
press. There are some clearances between the impeller and seat that must be
gotten just right. The seat should be smooth and free of pitting, if the
pump is to operate at rated capacity (I used to rebuild pumps as part of my
job, years ago).
The bearings and seals should be available at your friendly, local bearing
supply house. Actually, I'm surprised that no one has gotten into
rebuilding Brit car water pumps......
Bud Osbourne
----- Original Message -----
From: "Timothy H. Collins" <thcollin@mtu.edu>
To: <spridgets@autox.team.net>
Sent: Tuesday, May 19, 2009 8:36 PM
Subject: [Spridgets] Spridget Water Pump
>I opened my box of used Sprite parts and found an old cast iron water pump
>there. I remember it leaking about 35 years ago so it was changed out.
>Today as I held it in my hand I wondered "what's in one of those - can they
>be repaired?" So the tear down began. I used a gear puller and pulled the
>fan mount off of the shaft. That wasn't to difficult although I used a bit
>of heat. Then I used an aluminum drift and punched the shaft out the
>impeller end of the pump. So far so good. The shaft came out with the
>bearing(s) and race attached. Next, I took the gear puller and tried to get
>the race loose. It was at this step that the explosion occurred that spread
>shrapnel and grease around the garage. After I settled down, I found the
>bearing race (this is a piece about 2 inches long and 1 inch in diameter
>and about 1/16 thick) had split into at least 4 pieces (I'll know better if
>and when I find the rest of the parts). I found 8 ball bearings and two
>bearing cages. I think there were 6 balls per bearing, but I'll know better
>when I find the rest of the parts. I'd like to see an exploded view of a
>Spridget water pump. I saw an exploded view today, but it went by to quick
>to study.
>
> Tim Collins
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