[WPTA] Water pump TR3

[Jerry Van Vlack]

Great advice, follow it for success.
Applies to 4 and 4A too.
JVV
________________________________
From: Wpta <wpta-bounces at autox.team.net> on behalf of John Styduhar via Wpta <wpta at autox.team.net>
Sent: Monday, March 23, 2026 7:58 AM
To: dharkus at aol.com <dharkus at aol.com>
Cc: WPTA List <wpta at autox.team.net>
Subject: Re: [WPTA] Water pump TR3

Looks like you purchased the uprated water pump.  Like Vic mentioned, the pulley is held on with a nylock nut (and maybe a flat washer).  The pulley is also keyed on the shaft, so you must align the woodruff key in the shaft with the broached slot in the pulley hole.   Make sure the key is fully seated and not tipped (which could prevent the pulley from fully engaging).  As Vic suggested, remove the pulley from the new pump and install the long bolt.   Position the pulley on the shaft to engage the woodruff key.  Seat the pulley on the shaft which should expose the threads and secure the fastener.  If there is room in front of the engine, the pulley can be installed after the water pump is mounted.  Make sure the pump is oriented correctly on the pump housing so the weep hole is facing downward.   P.S. don't hold the waterpump in a vice by the impeller.

On Sun, Mar 22, 2026 at 10:56 PM dharkus--- via Wpta <wpta at autox.team.net<mailto:wpta at autox.team.net>> wrote:
Is there a Allen set screw there should be something that hold it on
Don


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On Sunday, March 22, 2026, 9:38 PM, Charles Giordano via Wpta <wpta at autox.team.net<mailto:wpta at autox.team.net>> wrote:

Good evening.

I was able to get the old water pump off and it was clearly worn out.  The old pump had a nut to get the pulley off.  The new one does not.  I’m assuming the new one is machine fit.  Before I break it.  How do I go about getting this bolt into the water pump housing.  Pictures included.

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