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Removing Distributor Gear
#1338288 Thu Dec 19 2019 01:52 AM
Joined: Feb 2016
Posts: 197
C
Gabriel Sandoval
Greetings stovebolters, I need to change my cast iron distributor gear (1958-1960 235 distributor) for a steel gear off of my 1947 216 distributor. As you guys know, they don't have a pin holding them on. They have a dab of metal on each side, which I ground down, but found no pin to punch out. Are these pressed on, or what is the usual removal process? Thanks

Last edited by ClassicsR4Me; Thu Dec 19 2019 01:53 AM.
Re: Removing Distributor Gear
ClassicsR4Me #1338290 Thu Dec 19 2019 01:59 AM
Joined: Feb 2016
Posts: 197
C
Gabriel Sandoval
first is the steel one ground down, second is cast iron.

Attached Files
Distributor 1.jpg (105.9 KB, 196 downloads)
Distributor 2.jpg (111.46 KB, 199 downloads)
Distributor 3.jpg (143.97 KB, 190 downloads)
Re: Removing Distributor Gear
ClassicsR4Me #1338293 Thu Dec 19 2019 02:09 AM
Joined: Feb 2019
Posts: 790
P
Jack of all Trades, Master of None
Take a closer look. If your like most of us, put on your 3x cheaters. That dab of metal that you ground off is the end of the pin that was factory swaged. I can see in your picture a slightly different color where the pin is. Use a slightly smaller pin punch (with a flat face) and back the gear up on a vice opened about 3/8”. You may need a helper to support the distributor so you can use two hands for the hammer and punch. Lightly tap that area with a small hammer and that punch and the pin should reveal itself.

Good Luck!

Last edited by Phak1; Thu Dec 19 2019 02:17 AM.

Phil

1952 Chevrolet 3100
Project Journals
‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: Removing Distributor Gear
Phak1 #1338295 Thu Dec 19 2019 02:15 AM
Joined: Feb 2016
Posts: 197
C
Gabriel Sandoval
I did see that nice little round metal spot, but was not sure if it was a pin. And how do I go about securing it to the other shaft? Maybe tach weld? Thanks for the info Phil

Re: Removing Distributor Gear
ClassicsR4Me #1338297 Thu Dec 19 2019 02:21 AM
Joined: Feb 2019
Posts: 790
P
Jack of all Trades, Master of None
I used a similar sized roll pin, tapped it thru, cut it off with a cutoff wheel, then ground it flush to the gear.

Make sure you don’t leave any burrs and clean up any metal filings that might get into the crankcase.

Last edited by Phak1; Thu Dec 19 2019 02:26 AM.

Phil

1952 Chevrolet 3100
Project Journals
‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: Removing Distributor Gear
ClassicsR4Me #1338300 Thu Dec 19 2019 02:44 AM
Joined: Feb 2016
Posts: 197
C
Gabriel Sandoval
Thanks Phil, I used the same pin, I was able it had just enough metal left that I could mushroom it just a bit. I doubt it will work its way loose.

Re: Removing Distributor Gear
ClassicsR4Me #1338303 Thu Dec 19 2019 03:01 AM
Joined: Feb 2019
Posts: 790
P
Jack of all Trades, Master of None
That’s good to here. Congratulations on your sucess!


Phil

1952 Chevrolet 3100
Project Journals
‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: Removing Distributor Gear
ClassicsR4Me #1338553 Sat Dec 21 2019 04:47 AM
Joined: Sep 2007
Posts: 410
R
Shop Shark
This is from Deve's TechNet (for next time - if there is a next time)

To reinstall the gear, get the proper length and size of roll pin. I use high strength stainless steel ones from McMaster-Carr. The 3/16" pin will be tight in the shaft, but I do not rely on that single roll pin. Put another M2.5 (x30) pin inside the first one making sure the openings are opposite each other. This almost guarantees that gear isn't going anywhere. Test it to make sure there is no slop introduced by the pin combination and then cut off the pins flush same as the one that was there in the first place. If by some chance there is any slop in the gear to shaft connection, drill both the gear and the shaft out to the next size roll pin combination which is 7/32" and 1/8".


It's a small world, but I wouldn't want to paint it.
Re: Removing Distributor Gear
ClassicsR4Me #1338563 Sat Dec 21 2019 01:51 PM
Joined: Dec 2017
Posts: 795
D
Shop Shark
The delco remy number for the pin references a roll pin that is the same length as the sold pin that comes with an nos gear. The solid pin was to be squashed peened down but the roll pin is not so the roll pin Is actually too long so you have to cut them down after install. A roll pin for a Ford is actually a perfect fit.

On the other hand, and believe it or not, you can safety wire the pin on our distributors.


Mike
Re: Removing Distributor Gear
Rusty Shackleford #1338582 Sat Dec 21 2019 04:11 PM
Joined: Jan 2013
Posts: 1,661
S
Shop Shark
Originally Posted by Rusty Shackleford
This is from Deve's TechNet (for next time - if there is a next time)

To reinstall the gear, get the proper length and size of roll pin. I use high strength stainless steel ones from McMaster-Carr. The 3/16" pin will be tight in the shaft, but I do not rely on that single roll pin. Put another M2.5 (x30) pin inside the first one making sure the openings are opposite each other. This almost guarantees that gear isn't going anywhere. Test it to make sure there is no slop introduced by the pin combination and then cut off the pins flush same as the one that was there in the first place. If by some chance there is any slop in the gear to shaft connection, drill both the gear and the shaft out to the next size roll pin combination which is 7/32" and 1/8".


This is timely for me, I am in the middle of an engine (235) assembly now. Have a nos gear I'm using.
I wonder though how a non rated 2.5mm spring pin that is only 1/2mm thick inside the 3/16" pin is really going to make a difference in the overall picture. Any others want to offer up an opinion?

Last edited by sstock; Sat Dec 21 2019 04:20 PM.

1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration
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