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1928 Chev 4 Distributor Part 635B #231112
01/17/12 12:00 AM
01/17/12 12:00 AM
Joined: Apr 2010
Posts: 1,281
Melbourne, Victoria, Australia
1928isgreat Offline OP

ChatMaster - 1,000
1928isgreat  Offline OP

ChatMaster - 1,000
Joined: Apr 2010
Posts: 1,281
Melbourne, Victoria, Australia
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?



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
Vintage Auto Garage - 6 Volt
Re: 1928 Chev 4 Distributor Part 635B [Re: 1928isgreat] #231114
01/17/12 12:22 AM
01/17/12 12:22 AM
Joined: Nov 2001
Posts: 28,725
Eagle Point, Oregon
Junkyard Dog Offline

Tech Advisor
Junkyard Dog  Offline

Tech Advisor
ChatMaster - 25,000
Joined: Nov 2001
Posts: 28,725
Eagle Point, Oregon
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.

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The Mangy Old Mutt

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

Moderated by  AntiqueMechanic 

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