Home » Public Forums » GMCnet » Governor Gear Roll Pin (Make Sure it is Staked In Well)
| Governor Gear Roll Pin [message #279445] |
Tue, 09 June 2015 16:17  |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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Big progress, today. Got the half shaft out of the final drive. Turned the steering to the right. Put three 3" bolts in place of the FD bolts to the transmission; tow at the bottom and one at the top. I put my jack under it, and slid the FD back about 2" until it hit the tie rod.
I eagerly looked for the errant gear and pin on the bottom of the governor. Ahh, no wonder the governor wouldn't come out. The pin was sticking out about 1/2", in fact it couldn't have been hanging on by much. You can see the pin sticking out right below the female spline on the transmission. I was able to weasel in there with some lineman's pliers and work it out. I poked at the gear with a piece of wire until it fell out.
The smart guys call it "staking" the pin in, meaning take a modified chisel and bugger the ends of the hole the pin goes in so it can't come out. The PO made a weak attempt at staking the pin. I can see the marks but they are not much and the pin slid out. (I wonder if the roll pin is the right size?) A three second per side faulty bit of work with a chisel caused several hours of work. Not to mention driving 90 miles in low gear. Get 'em staked in well, when replacing a gear.
My my, the governor comes out very easily when there is not a roll pin hitting the case.
Speaking of roll pin hitting the case, if the pin is sticking out the governor can't spin. The gear made a mighty effort but no deal.
The three guide bolts worked like a charm. Remember, the jack it supporting the weight, but I have not moved the left wheel. When I was shutting the barn door the jack handle was sticking out a tiny bit. I gave a light push and the final drive slipped back into place. No lifting, no aligning. Manny taught me that.
Manny said the governor probably is damaged. (Four eager GMCers following the advice of many attempting to get the governor out. Just twist and pull and it should come right out.) I ordered one of Wally Anderson's rebuilt governors from JimK. I am betting Wally got the pin staked in properly.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: Governor Gear Roll Pin [message #279455 is a reply to message #279445] |
Tue, 09 June 2015 20:14  |
captjack
Messages: 271
Registered: February 2010
Location: Sebastopol, California
Karma: 1
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Senior Member |
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Hi George,
What a job! I didn't check with the schedule you put out several days ago to see if you were following it. Seems like you are moving a bit faster.
I always thought that the purpose of a roll pin was to avoid staking. Roll pins are held in by friction. It makes me wonder if it's the right size, or something else is wrong. Probably a good idea to order a new governor.
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
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| Re: Governor Gear Roll Pin [message #279468 is a reply to message #279455] |
Tue, 09 June 2015 22:08 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Senior Member |
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captjack wrote on Tue, 09 June 2015 20:14Hi George,
What a job! I didn't check with the schedule you put out several days ago to see if you were following it. Seems like you are moving a bit faster.
I always thought that the purpose of a roll pin was to avoid staking. Roll pins are held in by friction. It makes me wonder if it's the right size, or something else is wrong. Probably a good idea to order a new governor.
Jack,
I agree with the thought that a roll pin is designed to hold itself in place, providing the hole is the correct size (not wore out by ?)'
Reusing the roll pin is not a good idea, it may have lost some of the spring tension.
If the staking is too good, then it becomes a hard field job to replace the gear. And of coarse, if it slides out it's impossible.
Is there a photo of how to stake, or what it should look like when done properly?
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: [GMCnet] Governor Gear Roll Pin [message #279470 is a reply to message #279445] |
Wed, 10 June 2015 00:04 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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George,
I hope it doesn't upset you but I copied both of the photos below and put them in an album on the Photo Site, I did that because
they will be easier to find and reference in the future.
Please note I did not include your name, I will if you say it's OK.
Regards,
Rob M.
The Pedantic Mechanic
-----Original Message-----
From: George Beckman
Big progress, today. Got the half shaft out of the final drive. Turned the steering to the right. Put three 3" bolts in place of the
FD bolts to the transmission; tow at the bottom and one at the top. I put my jack under it, and slid the FD back about 2" until it
hit the tie rod.
I eagerly looked for the errant gear and pin on the bottom of the governor. Ahh, no wonder the governor wouldn't come out. The pin
was sticking out about 1/2", in fact it couldn't have been hanging on by much. You can see the pin sticking out right below the
female spline on the transmission. I was able to weasel in there with some lineman's pliers and work it out. I poked at the gear
with a piece of wire until it fell out.
http://www.graestone.org/GMC/ThePin.jpg
The smart guys call it "staking" the pin in, meaning take a modified chisel and bugger the ends of the hole the pin goes in so it
can't come out. The PO made a weak attempt at staking the pin. I can see the marks but they are not much and the pin slid out. (I
wonder if the roll pin is the right size?) A three second per side faulty bit of work with a chisel caused several hours of work.
Not to mention driving 90 miles in low gear. Get 'em staked in well, when replacing a gear.
My my, the governor comes out very easily when there is not a roll pin hitting the case.
Speaking of roll pin hitting the case, if the pin is sticking out the governor can't spin. The gear made a mighty effort but no
deal.
http://www.graestone.org/GMC/TheGear.jpg
The three guide bolts worked like a charm. Remember, the jack it supporting the weight, but I have not moved the left wheel. When I
was shutting the barn door the jack handle was sticking out a tiny bit. I gave a light push and the final drive slipped back into
place. No lifting, no aligning. Manny taught me that.
Manny said the governor probably is damaged. (Four eager GMCers following the advice of many attempting to get the governor out.
Just twist and pull and it should come right out.) I ordered one of Wally Anderson's rebuilt governors from JimK. I am betting Wally
got the pin staked in properly.
George
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Governor Gear Roll Pin [message #279472 is a reply to message #279470] |
Wed, 10 June 2015 00:38 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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USAussie wrote on Tue, 09 June 2015 22:04George,
I hope it doesn't upset you but I copied both of the photos below and put them in an album on the Photo Site, I did that because
they will be easier to find and reference in the future.
Please note I did not include your name, I will if you say it's OK.
Regards,
Rob M.
The Pedantic Mechanic
Fine to use my name, Rob. I put it on my site because I am using my iPhone while my Internet Provider works on the transmitter that didn't survive a storm.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: Governor Gear Roll Pin [message #279473 is a reply to message #279468] |
Wed, 10 June 2015 00:42 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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Adrien G. wrote on Tue, 09 June 2015 20:08captjack wrote on Tue, 09 June 2015 20:14Hi George,
What a job! I didn't check with the schedule you put out several days ago to see if you were following it. Seems like you are moving a bit faster.
I always thought that the purpose of a roll pin was to avoid staking. Roll pins are held in by friction. It makes me wonder if it's the right size, or something else is wrong. Probably a good idea to order a new governor.
Jack,
I agree with the thought that a roll pin is designed to hold itself in place, providing the hole is the correct size (not wore out by ?)'
Reusing the roll pin is not a good idea, it may have lost some of the spring tension.
If the staking is too good, then it becomes a hard field job to replace the gear. And of coarse, if it slides out it's impossible.
Is there a photo of how to stake, or what it should look like when done properly?
Wally Anderson's site (search Wally & Sue GMC. He shows a modified tool and the stake.
I agree with roll pin discussion. By nature they are spring steel and should be way too tight to slip out. I am wondering if the hole was reamed a bit due to using it as a guide to drill new gears. That and then heat expanding the hole could make it loose. I was puttering along when this happened, so I don't think there was any undue force.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: [GMCnet] Governor Gear Roll Pin [message #279478 is a reply to message #279470] |
Wed, 10 June 2015 04:31 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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IN CASE YOU MISSED THE LINK
http://www.gmcmhphotos.com/photos/donate.html
On Wednesday, June 10, 2015, gene Fisher wrote:
> Nice job george n rob
> Reminds me - to all -
> SEND MONEY TO BDUB
> He is our life and future with the photo store
>
> Erf
>
> On Wednesday, June 10, 2015, Robert Mueller > wrote:
>
>> George,
>>
>> Done!
>>
>>
>> http://www.gmcmhphotos.com/photos/transmission-governor/p58158-govenor-pin-out.html
>>
>> Thanks,
>> Rob M.
>>
>> -----Original Message-----
>> From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of
>> George Beckman
>>
>> Fine to use my name, Rob. I put it on my site because I am using my
>> iPhone while my Internet Provider works on the transmitter that
>> didn't survive a storm.
>>
>> George
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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