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Old 09-11-2017, 07:40 PM   #1
71CHEVYSHORTBED402
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Carrier bearing mounting bolts, cotter pin bolts?

Just curious if the carrier bearing mounting bolts are supposed to be cotter pin bolts. I don't see a good reason for cotter pin bolts.

As I found them, there was a bolt and washer below, and a lock washer and nut on top. There were no cotter pins, though one bolt had what was left of one. Thank you
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Old 09-11-2017, 07:58 PM   #2
randy500
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Re: Carrier bearing mounting bolts, cotter pin bolts?

Fine thread too, right? They always have those but I have never seen cotter pins in the holes...
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Old 09-11-2017, 09:23 PM   #3
Steeveedee
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Re: Carrier bearing mounting bolts, cotter pin bolts?

Welcome back, Kotter! Couldn't help myself. Nope, no Cotter pins required in that application. Looks like someone went in and did a little dirty work at some point.
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Old 09-11-2017, 09:31 PM   #4
71CHEVYSHORTBED402
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Re: Carrier bearing mounting bolts, cotter pin bolts?

Quote:
Originally Posted by randy500 View Post
Fine thread too, right? They always have those but I have never seen cotter pins in the holes...
Yep. The bolt threads are 7/16-20 x 1.1/8. The heads are small too. 5/8" head using a 11/16" OD nut.

Quote:
Originally Posted by Steeveedee View Post
Welcome back, Kotter! Couldn't help myself. Nope, no Cotter pins required in that application. Looks like someone went in and did a little dirty work at some point.
A great show. Especially Horsehack .......... Judging by Randy & your responses, sounds like it's a normal application, less the cotter pins. Yeah, someone busted a cotter pin in one, left it in there. I didn't even notice until I cleaned it.



Thanks for the responses.
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Last edited by 71CHEVYSHORTBED402; 09-11-2017 at 09:50 PM.
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Old 09-11-2017, 10:00 PM   #5
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Re: Carrier bearing mounting bolts, cotter pin bolts?

Those are the right bolts and nuts. I guess maybe they had voter pin sin them from the factory, I just don't ever remember seeing them.
I lost one of those oddball nuts a couple weeks ago...I know the direction it went so I guess it will turn up.
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Old 09-11-2017, 10:40 PM   #6
71CHEVYSHORTBED402
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Re: Carrier bearing mounting bolts, cotter pin bolts?

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Originally Posted by randy500 View Post
Those are the right bolts and nuts. I guess maybe they had voter pin sin them from the factory, I just don't ever remember seeing them.
I lost one of those oddball nuts a couple weeks ago...I know the direction it went so I guess it will turn up.
I imagine you're like me "I got to find that nut". I was thinking the bolt head was irregular, but I see you're right, it's the nut.
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Old 09-12-2017, 02:49 PM   #7
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Re: Carrier bearing mounting bolts, cotter pin bolts?

Quote:
Originally Posted by 71CHEVYSHORTBED402 View Post
Yep. The bolt threads are 7/16-20 x 1.1/8. The heads are small too. 5/8" head using a 11/16" OD nut.
That is correct for that size. I have the same bolts on my C30 carrier bearing
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Old 09-13-2017, 01:23 AM   #8
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Re: Carrier bearing mounting bolts, cotter pin bolts?

I dont think a cotter pin would be as effective as a lock washer in that application. I have had several of these trucks and never observed a hole in the bolt for a cotter pin used in that location. so dont read too much or over analyse the hole deal.
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