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What goes on this water pump bolt? [message #359327]

Fri, 09 October 2020 13:45

Tilerpep

Messages: 404
Registered: June 2013
Location: Raleigh, NC

Karma: 7

Senior Member

I am finally getting my rebuilt engine back together on the 75 455! I took lots of picture and notes, but not of the front of the water pump apparently..

there is a bolt/stud just over the radiator outlet that is clearly intended to hold a bracket or something. What goes on it?

Not my pic, but can be seen in this photo

http://www.gmcmhphotos.com/photos/data/5504/medium/100_6024.jpg

Thanks

1975 Glenbrook, 1978 Royale rear bath Raleigh, NC

[Updated on: Fri, 09 October 2020 13:46]

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Re: [GMCnet] What goes on this water pump bolt? [message #359328 is a reply to message #359327]

Fri, 09 October 2020 13:51

James Hupy

Messages: 6806
Registered: May 2010

Karma: -62

Senior Member

The stud by the water pump INLET is for the Air Conditioner adjustment
bracket. The end towards the water pump has a hole. The other end has a
slot for belt adjustment.
Jim Hupy
Salem. OREGON

On Fri, Oct 9, 2020, 11:46 AM Tyler via Gmclist
wrote:

> I am finally getting my rebuilt engine back together! I took lots of
> picture and notes, but not of the front of the water pump apparently..
>
> there is a bolt/stud just over the radiator outlet that is clearly
> intended to hold a bracket or something. What goes on it?
>
> Not my pic, but can be seen in this photo
>
> http://www.gmcmhphotos.com/photos/data/5504/medium/100_6024.jpg
>
>
>
> Thanks
> --
> 1975 Glenbrook, 1978 Royale rear bath
> Raleigh, NC
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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Re: What goes on this water pump bolt? [message #359389 is a reply to message #359327]

Sat, 10 October 2020 20:55

Tilerpep

Messages: 404
Registered: June 2013
Location: Raleigh, NC

Karma: 7

Senior Member

Well, with Hupy's reply (thanks Jim), and further digging - I am missing something!
It was three years and a few alternators belts before I figured out I was missing the rear alternator bracket - now I know the previous rebuilder left off this bottom AC bracket as well...

Kept digging for pics and this one shows what I am missing (not my pic, just kept digging in the photo files)
http://www.gmcmhphotos.com/photos/data/5504/medium/100_6033.jpg

Only half of the bar is shown in the OEM diagram - having not seen it in person, I could not tell where it went.
http://www.gmcmhphotos.com/photos/data/5945/1976_AC_Compressor_Mounting_ISO_Drawing.jpg

Mystery solved - now to find one. But, that adjuster bolt goes right in the block - pretty strong, doesn't seem like the bar adds much...? Do I need it?

1975 Glenbrook, 1978 Royale rear bath Raleigh, NC

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