| [GMCnet] Removing the rear pin retainer screws [message #363535] |
Mon, 19 April 2021 21:38  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Helping an owner of a 73. I've never replaced the rear pins/bushings in the 73 or 74. 78. Yes. Rust is minimal except for the pin retainer bolts. Lots of penetrant for 2 days. First bolt twisted off with very little effort. I've been avoiding posting. But I need some ideas to avoid issues with the other 3 bolts. Ken Shafer has built his 73 into an amazing GMC.
Bob Dunahugh
78 Royale since 2003.
4 real COPO Yenkos
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| [GMCnet] Re: Removing the rear pin retainer screws [message #363538 is a reply to message #363535] |
Mon, 19 April 2021 23:56  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Bob,
we take Allen wrench cut off, use a large Ball peen hammer and shock it
with blows to loosen it up .
Also use moderat 3/8 impact and run it back and forward .
If you use our 1 1/4 pins
you do not need to use those keepers as you will be able to use the
optional bracket that tie in both pins.
On Mon, Apr 19, 2021 at 7:38 PM Bob Dunahugh wrote:
> Helping an owner of a 73. I've never replaced the rear pins/bushings in
> the 73 or 74. 78. Yes. Rust is minimal except for the pin retainer bolts.
> Lots of penetrant for 2 days. First bolt twisted off with very little
> effort. I've been avoiding posting. But I need some ideas to avoid issues
> with the other 3 bolts. Ken Shafer has built his 73 into an amazing GMC.
> Bob Dunahugh
> 78 Royale since 2003.
> 4 real COPO Yenkos
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
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| Re: [GMCnet] Removing the rear pin retainer screws [message #363544 is a reply to message #363535] |
Tue, 20 April 2021 08:53 |
Ken Shaffer
Messages: 89
Registered: September 2017
Location: Marion Iowa
Karma: -1
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Good news! I will call you later today Jim. I sure wasn't looking forward to drilling and tapping those retainer screw holes.
Ken Shaffer
Marion Iowa
73 Canyon Lands, 455, Micro-level, Alum radiator, Alcoa wheels, Lenzi hubs/bearings, Howell EFI/EBL, Rostra Cruise, Custom interior
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| Re: [GMCnet] Removing the rear pin retainer screws [message #363933 is a reply to message #363535] |
Mon, 10 May 2021 18:47 |
rickmike
Messages: 252
Registered: September 2011
Location: United States
Karma: 0
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When I disassembled my 74 bogies, I discovered that the antirotation screws for the pivot pins on the backside of the bogie box had the heads broken off. (3 of 4)
Upon close inspection, the allen socket in the oversized heads were cut deep enough to actual start to enter the shaft of the screw!! This leaves very little shaft metal next to the head and almost guarantees that the head will break off when trying to remove them.
Rick M.
1974 26' Canyonlands
aka "The General"
Clinton, TN
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| [GMCnet] Re: Removing the rear pin retainer screws [message #363934 is a reply to message #363933] |
Mon, 10 May 2021 19:01 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Go ahead and brake those screws as we supply the retaining plate on the
front side to prevent rotation.
There is a chance you might have the plate already on the assembly.
On Mon, May 10, 2021 at 4:47 PM Richard Michelhaugh <
rick.michelhaugh@frontiernet.net> wrote:
> When I disassembled my 74 bogies, I discovered that the antirotation
> screws for the pivot pins on the backside of the bogie box had the heads
> broken
> off. (3 of 4)
> Upon close inspection, the allen socket in the oversized heads were cut
> deep enough to actual start to enter the shaft of the screw!! This leaves
> very
> little shaft metal next to the head and almost guarantees that the head
> will break off when trying to remove them.
>
> Rick M.
> --
> 1974 26' Canyonlands
> aka "The General"
> Clinton, TN
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
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