Play in water pump shaft

[bigd1101]

Hi guys, the water pump on the 28 has about a 1/2 in of play when running. The shaft slides back and forth and makes a clicking sound as it turns. Is this normal?

[WHN]

That’s one of the reasons we replaced our orginal pump with a leakless. 25 years of trouble free driving, no leaks or drips. Inside of engine compartment stays clean. Enjoy.

[Ray in La Mesa]

No, it's not normal. End play should only be a few thousands, you could loose the fan through the radiator if something breaks. Fix it or replace it.

[Chuck Sea/Tac]

You can buy a lock collar from the venders, and that will keep it from moving backwards. If the pump moves too far forwards, then you’ll need to rebuild or replace. They are easy to do.
The most work is probably getting it out of the car if all is stock.

[bigd1101]

It's got way too much play. I just ordered a new pump. Rumor has it I'll have to remove the radiator and shroud?

[darrylkmc]

Sponsored Links (Register now to hide all advertisements)

Be sure to check the location on the Impeller on the shaft.

Many years ago l purchased a Leakless water pump kit, a couple years ago l decided to use it. The shaft moved back and forth quite a lot. I took it apart and compared the location of the impeller to an original, it was off by a large amount. Put it in my press and adjusted it correctly, it now has very little thrust. This impeller was Not pinned.

Darryl in Fairbanks

[bigd1101]

I just bought a stock water pump like the one on the car. I would assume they are all "leak-less" when new, LOL! I'm 66 and will drive the car a few hundred miles a year so the new pump should outlast me


Don

[WHN]

Originally Posted by bigd1101

I just bought a stock water pump like the one on the car. I would assume they are all "leak-less" when new, LOL! I'm 66 and will drive the car a few hundred miles a year so the new pump should outlast me


Don

There is a difference between leakless and orginal style water pumps.

[bigd1101]

Just read my Les Andrews repair book.......looks like I'm home free. I have the two blade fan! I just need to remove the hood and the radiator supports and tilt the radiator forward just enough to remove the old pump.......thank God. I did not want to remove the who deal that's for sure......

[Bob C]

With as much end play you have the stop in the head is probably worn so be
sure to install a collar on the new pump as it will probably have to much play also.


Bob

[bigd1101]

Originally Posted by Bob C

With as much end play you have the stop in the head is probably worn so be
sure to install a collar on the new pump as it will probably have to much play also.


Bob

Bob, where does that collar actually go?

[Cool Hand Lurker]

You can pick up a two piece shaft collar at most any hardware store. These can be installed without removing the water pump. Cheap fix.

[bigd1101]

Originally Posted by Cool Hand Lurker

You can pick up a two piece shaft collar at most any hardware store. These can be installed without removing the water pump. Cheap fix.

So I would need two correct? Both on the exposed shaft at each end? Shouldn't effect the balance right?

[Cool Hand Lurker]

Originally Posted by bigd1101

So I would need two correct? Both on the exposed shaft at each end? Shouldn't effect the balance right?

You only need one. put it on the end of the shaft that is nearest the fan. The fan will keep the shaft from moving toward the block and the collar will keep it from moving toward the radiator.

[bigd1101]

Originally Posted by Cool Hand Lurker

You only need one. put it on the end of the shaft that is nearest the fan. The fan will keep the shaft from moving toward the block and the collar will keep it from moving toward the radiator.

So where do I get one? What size?

[Cool Hand Lurker]

Here is a photo.

[redmodelt]

The thrust washer between the impeller and casting may be gone adding to amount of end play.
The 2 piece might be ok except, there would be no way to install the plastic thrust washer between it and the bearing. the thrust washer keeps the metal to metal contact from happening.

[daren007]

The title of this thread made me think of something else.

[bigd1101]

I contacted the previous owner of the A and he says and I quote " it is on with simulated studs, so you can take it off without taking the radiator off." I wasn't planning on taking the rad off anyway as a two blade fan doesn't require that, but what in the H are "simulated studs"?

[aermotor]

I would like to see some kind of C shaped spacer of different thickness, as needed, that be can be slipped over the worn stop on the head. Would something like this restore the head stop to the correct depth?

John