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#1 |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Bracket for drive shaft carrier bearing
The previous owner welded the carrier bearing to the bracket that it bolts to and there no longer seem to be any bolt holes for the carrier bearing to attach to even if I was able to cut off the bearing. Does anyone know if there is a replacement bracket that can bolt on where the current bracket is?
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#2 |
Registered User
Join Date: Apr 2015
Location: East Tn (In the heart of the Smoky Mtns)
Posts: 1,869
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Re: Bracket for drive shaft carrier bearing
It sounds like you’re going to need a new cross member.
At the very least, you need to fabricate the mount point. It needs to all be lined up as it was from the factory, or you’ll forever have driveshaft issues |
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#3 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,240
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Re: Bracket for drive shaft carrier bearing
Quote:
Look on the parts board, though you have to be a paying member to do that.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 07-21-2024 at 10:31 AM. |
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#4 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,492
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Re: Bracket for drive shaft carrier bearing
Quote:
He doesn't have to be a paying member to look, or buy items posted for sale on the parts board. He would have to be a paying member to post a want to buy though, I think that is what you were thinking about.... .
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#5 |
Senior Member
![]() Join Date: Dec 1999
Location: TX
Posts: 1,570
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Re: Bracket for drive shaft carrier bearing
Post some pictures of what you are working with. Maybe we can point you to exactly what you need...
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#6 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,240
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Re: Bracket for drive shaft carrier bearing
Quote:
Probably, thanks
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#7 |
Born Psycho
![]() Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,882
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if you can post a picture of your bracket someone on here can help i'm sure.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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#8 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: Bracket for drive shaft carrier bearing
Long or short bed?
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#9 |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
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#10 |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
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#11 |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
That's what I was afraid of
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#12 |
Senior Member
![]() Join Date: Dec 1999
Location: TX
Posts: 1,570
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Re: Bracket for drive shaft carrier bearing
Since you are new here, to post a picture, click the "Go Advanced" button underneath the "Quick Reply" section "Message" box where you would normally type your reply in this thread.
Once on the advanced page there is a Paper Clip icon where you can attach files. |
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#13 |
Registered User
Join Date: Feb 2011
Location: Under the Truck Dreaming
Posts: 704
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Re: Bracket for drive shaft carrier bearing
X2 for pictures. Because the bearing has been welded to the bracket does not mean that it can't be salvaged. Welding is just extra metal and that can be be removed. But I guess it depends on how bad the "weld" is.
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__________________
72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks... |
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#14 |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
Thanks for the help so far. Here are photos of the bracket. Let me know if a different angle would be helpful.
I am starting to think that I can just cut of the old bearing strap and grind the bracket till it is smooth but would love y'alls opinions. |
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#15 |
Registered User
Join Date: Feb 2011
Location: Under the Truck Dreaming
Posts: 704
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Re: Bracket for drive shaft carrier bearing
I would get that whole unit off of there and put it in a plastic 5 gallon bucket and use the magic electrolysis (lots of videos on how to do this) to get it cleaned up. Then you can come up with a plan on what to do. At first glance I think it can be saved. One thing about electrolysis is it gets in between the parts that are spot welded or not accessible with mechanical methods.
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__________________
72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks... |
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#16 | |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
I can give that a shot. Would you just drill out the rivets that are holding the bracket onto the cross member?
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#17 |
Senior Member
![]() Join Date: Dec 1999
Location: TX
Posts: 1,570
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Re: Bracket for drive shaft carrier bearing
I would not worry too much about that surface rust.
Your plan of attacking it with a grinder to get back to the flat surface where you can bolt a new carrier bearing sounds perfect. If you don't mind the expense get the billet carrier bearing like this: https://www.summitracing.com/parts/wst-bcb-6372 or this - https://www.amazon.com/Driveshaft-re.../dp/B0B7WTDM7R The reason whey they welded the previous one is because the quality of the carrier bearings like you have has gone to crap, the factory style. I have one of the factory style on a truck that I have welded back together at lest 3 times. Never considered just welding it to the truck, but I guess that fixed it until the next guy has to change the carrier bearing again. |
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#18 | |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
Love this idea. Thanks!
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#19 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
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Re: Bracket for drive shaft carrier bearing
If it turns out the crossmemver is too far gone, I have crossmemver I can cut out of the frame for you. Lemme know
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1967custom |
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#20 | |
Registered User
Join Date: Feb 2011
Location: Under the Truck Dreaming
Posts: 704
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Re: Bracket for drive shaft carrier bearing
Quote:
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72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks... |
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#21 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,142
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Re: Bracket for drive shaft carrier bearing
I'm going to try and clear some misconceptions up. The carrier bearing in question is for the basic coil spring 1/2 ton truck. These trucks did not come with a sliding joint in the rear drive shaft like the 3/4 tons and leaf spring 1/2 ton trucks like 71CHEVYSHORTBED402 shows.
I have seen 3 different styles of carrier bearings for the various 67-72 trucks and there may be more I haven’t seen so it's no wonder as to why there is confusion. Photo #1 shows the basic 1/2 ton driveline with no sliding joint. When the truck's rear axle moves up and down the drive shaft moves fore and aft. On trucks like 71CHEVYSHORTBED402's the slip joint absorbs this move by collapsing and expanding as needed. On the basic 1/2 ton the movement is absorbed by the yoke on the end of the transmission moving in and out of the tailshaft. In the 2nd photo the red arrows indicate the fore and aft movement of the driveline. Since the bearing doesn't slide on the driveline the rubber bushing flexs to allow the bearing to move fore and aft. The green arrows point to the rubber bushing that must flex. The rubber will only flex so far so the carrier bearing MUST be installed with no preload on the rubber when the truck is at ride height. The yellow arrow points to the slots in the bearing mount that allow the carrier to be installed with no preload at ride height. Things get problematic when the truck is lowered (or raised) too much and the adjustment range provided by the factory isn't enough and the bearing gets installed with a preload either forward or aft. When that happens the rubber cannot flex enough and the bracket then is forced to flex, eventually work hardening the steel and breaking apart. Another common cause of carrier failure on a stock height truck is installing the carrier with the rear axle hanging and not sitting at ride height. 2 post lifts are nice but..... As mentioned you can replace the factory style carrier bearing with the billet style but you MUST replace the complete driveline with one that has the sliding joint in the rear half of the driveline as the billet carrier does not flex. Billet style shown in last photo. Green arrow indicates the sliding joint. I hope this helps. If not just shout out and hopefully I answer the questions.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#22 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,406
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Re: Bracket for drive shaft carrier bearing
^ I learned this lesson 50 years ago-
"Another common cause of carrier failure on a stock height truck is installing the carrier with the rear axle hanging and not sitting at ride height. 2 post lifts are nice but....." It includes cars, like my '64 Impala. BTDT
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#23 | |
Registered User
Join Date: Mar 2021
Location: Dallas, TX
Posts: 8
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Re: Bracket for drive shaft carrier bearing
Whoa! This is hugely helpful. And definitely saved me from a mistake. Thank you.
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#24 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,337
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Re: Bracket for drive shaft carrier bearing
HO455 thanks for educating us who are not so experienced…
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71 C-20 07 Magnum RT AWD |
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#25 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,240
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Re: Bracket for drive shaft carrier bearing
Quote:
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 07-31-2024 at 09:50 PM. |
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