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Distributor gear removal
#1359146 Thu May 07 2020 09:57 PM
Joined: Jul 2013
Posts: 428
G
GMJager Offline OP
Shop Shark
Any tips on driving out the roll pin holding the dist. gear on? Trying to remove the gear and switch it out (worn) for my 292 rebuild and am having a heck of a time!

Re: Distributor gear removal
GMJager #1359149 Thu May 07 2020 10:11 PM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
Most of those pins are peened over somewhat, making the ends of the pin bigger than the part that goes through the gear and shaft. Grind the ends flush with the gear, and support the gear on a V block while using a starter punch to get the pin moving. Then drive it on through with a proper sized pin punch.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Distributor gear removal
GMJager #1359163 Fri May 08 2020 01:21 AM
Joined: Dec 2017
Posts: 809
D
Shop Shark
Grind off the head of the pin. Drive the pin out. Don’t use a pointed punch. It will expand the pin and you won’t get it out. If you are having trouble getting the pin out, and that does happen occasionally, grind off the other side of the pin and see if it will drive out in that direction.

Attached Files
672C9A4A-14F3-4011-A130-BB110EED406B.jpeg (177.97 KB, 131 downloads)
7070B774-8690-45F2-B3E9-5898E5748196.jpeg (217.13 KB, 133 downloads)
03187D89-CED2-4CBB-A85E-AFA0C5443CAD.jpeg (169.07 KB, 131 downloads)

Mike
Re: Distributor gear removal
GMJager #1359225 Fri May 08 2020 02:24 PM
Joined: Apr 2008
Posts: 796
F
Shop Shark
Are the pins slightly tapered so they would drive out easier in one direction? Correct me if I'm wrong.


Ed
Re: Distributor gear removal
GMJager #1359235 Fri May 08 2020 03:39 PM
Joined: Dec 2017
Posts: 809
D
Shop Shark
the NOS pins I have are not tapered but keep in mind that these style solid pins were essentially peened on with a dedicated piece of equipment. As HRL noted above, if there was any variation in the hole for the pin in the distributor gear, the peening process would hvae filled that in, or in other words, a little bulge that would make getting the pin out in that direction pretty hard if not impossible with out breaking the gear. So if you use the other side that was not peened, you might get it out in that direction.

That being said, I have never been able to use an original style solid pin when installing a new gear. I cant get the pin to peen down snug enough by hand so I have always used hardened delco remy roll pins or after market pins made specifically for distributpr gears.


Mike
Re: Distributor gear removal
GMJager #1359270 Fri May 08 2020 07:34 PM
Joined: Jul 2013
Posts: 428
G
GMJager Offline OP
Shop Shark
Grinding down one side slightly to remove the lip worked wonders. I also sprayed it several times with a penetrant yesterday/this morning.

Thanks for the tips all!

Re: Distributor gear removal
GMJager #1359278 Fri May 08 2020 09:20 PM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
After installing thousands of rivets as an aircraft assembly line worker back in the 1960's, I've always used an air rivet gun and a semi-circle shaped bucking bar to install those pins. I'm a little spooked by a glass-hard hollow roll pin carrying the driving load of an oil pump. "Different strokes for different folks!"
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Distributor gear removal
GMJager #1359281 Fri May 08 2020 10:05 PM
Joined: May 2015
Posts: 2,801
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
I wouldn't worry about using roll pins. I doubt they'd break. I've also seen multi-layer pins (rolled up like a rug) as opposed to the springy C-shaped ones, but have never found a source for new ones of those.
The main issue is, you don't want the pin working its way out of the hole. But do what you're comfortable with, and what works.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Distributor gear removal
GMJager #1359295 Sat May 09 2020 12:05 AM
Joined: Dec 2017
Posts: 809
D
Shop Shark
The roll pins are fine to use. In fact, if you look up the part number for a stock delco pin for say a 235 chevy, you don’t get a solid pin, you get a roll pin. The vertex magneto on one of my 261 motors uses a roll pin. On the other hand, you can actually safety wire the roll pin on a 235/261 distributor.

Attached Files
Last edited by Dragsix; Sat May 09 2020 12:07 AM.

Mike
Re: Distributor gear removal
GMJager #1359329 Sat May 09 2020 04:07 AM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
MSD sells the heavy duty coiled roll pins, but they're pricey. Cheap insurance, however, if you don't want to go to the trouble of peening a solid pin properly.

https://www.ebay.com/i/264720724994?chn=ps

Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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