Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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Joined: Apr 2010
Posts: 1,284
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Hi Guys,

I have several of these, and some have up and down movement in the main shaft between the top of the drive gear and the bottom of the housing, others very little. I recently purchased a NOS unit that has about a washer thickness of up and down movement. In the past I have taken this movement out, but I am now thinking it should be there.

Anyone have an idea as to what it should be?

Cheers

Ray


Some say "Street is neat". I prefer "1928 is great"

I have documented my 45 years with a 1928 Chev Tourer, from 1973 to 2018, and regulary add other items that I hope are of interest to others. Your comments are most welcome.The story of the Red Chev can be viewed at http://my28chev.blogspot.com/
Joined: Nov 2001
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That movement should be there.

There is an oil pump thrust washer that sits on top of the oil pump. The washer is approx. .075" thick and this thrust washer causes the distributor main shaft and weight plate to move up in the distributor housing when the distributor is installed. This is done so the weight plate inside of the distributor is not turning on the distributor housing thus causing excessive wear to the inside of the distributor housing.

laugh wink beer2


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"

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