Alternator Alignment for pseigmund - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stllookn · 03-03-2009, 08:25 PM

Here is my truck which I have not touched...not sure anyone has. I know it has a brand new starter so this might be a replacement alternator as well. I did not check to see if it still had the voltage regulator.

stllookn · 03-03-2009, 11:07 PM

ttt

pseigmund · 03-04-2009, 12:37 PM

Thanks for the pictures and the information. I will take a look when I get home tonight and see if I can figure out what is going on.

Bruce88 · 03-04-2009, 05:22 PM

From your pictures it looks like your ALT pulley is aft and needs to be moved forward.

It could be as simple as a washer in the wrong place (see attached pic)

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Name: ALT-install.gif
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Size: 12.5 KB

You would be surprised as to how many v belt pulleys are out of alignment, normally it’s a small amount even from the factory. Throw in replacing water pumps and alternators it can be visibly noticeable (not all parts are made exactly the same). If you want to fine tune your v belt pulley alignment the technique/concept to figuring out how much shimming or movements of parts are required, I show how in this “How To” http://67-72chevytrucks.com/vboard/s...d.php?t=318240 concept will work on 6 cylinders.

stllookn · 03-04-2009, 05:41 PM

Quote:

From your pictures it looks like your ALT pulley is aft and needs to be moved forward.

Mine looks like the illustration you posted and is aligned perfectly...the picture I took for pseigmund is a little off.

Bruce88 · 03-04-2009, 06:26 PM

My apologies for my misunderstanding of why the pictures where posted.

If pseigmund is having alternator alignment problems what I posted might help him out. Because I don’t know the whole story I might have supplied input that was not needed or sought sorry.

Wrenchbender Ret · 03-04-2009, 07:08 PM

That is a 292 engine. It takes a different pulley then the others. Often people buy a reman alt. & dont change the pulleys. The 292 pulley has a space between the alt. fan & pulley groove. The lower bracket is different from a 250 also but I think you are ok there.

factorystock · 03-04-2009, 09:15 PM

The pulleys are different on some engines. This is a 65 292 with the deeper pulley, yes the 292 was green in 65. But there are also 2 styles of alternator brackets that control the alignment too.

**rockc** · 03-04-2009, 09:33 PM

Bruce 88 that is a great diagram and i can sure use it.

pseigmund · 03-06-2009, 03:12 PM

Bruce88,

Thank you for the diagram, very helpful. I haven't had a chance to figure out what is wrong but will let you know when I find out. Good information on the different alt pulleys for 6 cylinders. Thanks guys, Pete

03-03-2009, 08:25 PM	#1
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Alternator Alignment for pseigmund Here is my truck which I have not touched...not sure anyone has. I know it has a brand new starter so this might be a replacement alternator as well. I did not check to see if it still had the voltage regulator. Attached Images __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

03-03-2009, 11:07 PM	#2
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: Alternator Alignment for pseigmund ttt __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

03-04-2009, 12:37 PM	#3
pseigmund Registered User Join Date: Feb 2009 Location: Whitefish, MT Posts: 27	Re: Alternator Alignment for pseigmund Thanks for the pictures and the information. I will take a look when I get home tonight and see if I can figure out what is going on.

03-04-2009, 05:22 PM	#4
Bruce88 Registered User Join Date: Oct 2008 Location: Everett, WA Posts: 326	Re: Alternator Alignment for pseigmund From your pictures it looks like your ALT pulley is aft and needs to be moved forward. It could be as simple as a washer in the wrong place (see attached pic) You would be surprised as to how many v belt pulleys are out of alignment, normally it’s a small amount even from the factory. Throw in replacing water pumps and alternators it can be visibly noticeable (not all parts are made exactly the same). If you want to fine tune your v belt pulley alignment the technique/concept to figuring out how much shimming or movements of parts are required, I show how in this “How To” http://67-72chevytrucks.com/vboard/s...d.php?t=318240 concept will work on 6 cylinders. __________________ My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=318544

03-04-2009, 06:26 PM	#6
Bruce88 Registered User Join Date: Oct 2008 Location: Everett, WA Posts: 326	Re: Alternator Alignment for pseigmund My apologies for my misunderstanding of why the pictures where posted. If pseigmund is having alternator alignment problems what I posted might help him out. Because I don’t know the whole story I might have supplied input that was not needed or sought sorry. __________________ My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=318544

03-04-2009, 07:08 PM	#7
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,208	Re: Alternator Alignment for pseigmund That is a 292 engine. It takes a different pulley then the others. Often people buy a reman alt. & dont change the pulleys. The 292 pulley has a space between the alt. fan & pulley groove. The lower bracket is different from a 250 also but I think you are ok there.

03-04-2009, 09:15 PM	#8
factorystock Registered User Join Date: Feb 2007 Location: west coast Posts: 3,369	Re: Alternator Alignment for pseigmund The pulleys are different on some engines. This is a 65 292 with the deeper pulley, yes the 292 was green in 65. But there are also 2 styles of alternator brackets that control the alignment too. Attached Images

03-04-2009, 09:33 PM	#9
rockc Registered User Join Date: Jul 2007 Location: SE WY Posts: 634	Re: Alternator Alignment for pseigmund Bruce 88 that is a great diagram and i can sure use it. __________________ 72 chevy 3/4 ton 4X4

03-06-2009, 03:12 PM	#10
pseigmund Registered User Join Date: Feb 2009 Location: Whitefish, MT Posts: 27	Re: Alternator Alignment for pseigmund Bruce88, Thank you for the diagram, very helpful. I haven't had a chance to figure out what is wrong but will let you know when I find out. Good information on the different alt pulleys for 6 cylinders. Thanks guys, Pete



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