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BStone 
Orange Level
Joined: 15 Sep 2009
Location: Texas
Points: 2847
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 Topic: 7045 alternator
Posted: 28 Nov 2010 at 6:12pm |
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The 7045 has a delco style alt. on it and it want line up with the water pump and crank.The alt is shaft is to short.Has anyone else had this problem?If so how do you get it lined up?
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 20993
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Posted: 28 Nov 2010 at 9:07pm |
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First off, a 7045 didn't come with a Delco alternator. I'd guess you have the wrong pulley ..... the correct pulley will line up with the waterpump and crank pulley.
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BStone
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Joined: 15 Sep 2009
Location: Texas
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Posted: 28 Nov 2010 at 9:47pm |
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Yes I'm sure it's been changed from the original.Would the correct pulley need to be OEM, or will a alt. supply co. be able to get it?
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MikeKroupa
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Joined: 12 Sep 2009
Location: pierce,nebraska
Points: 77
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Posted: 29 Nov 2010 at 8:15am |
Just use the pulley off a neihoff alt., oem, and you will have correct rpm. Make sure though that the grooves are not wore out and you have good belts., Mike
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
Points: 2316
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Posted: 29 Nov 2010 at 8:29am |
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The delco alternator should use a larger (tach correcting) pulley for the tach to operate correctly ,otherwise the rpm will register higher than it should.I don't know the exact dimension of the pulley.I get them from Select Parts in Omaha.
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BStone
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Joined: 15 Sep 2009
Location: Texas
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Posted: 29 Nov 2010 at 5:51pm |
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Lynn so your using the delco style alt with a pulley from Select Parts and the belts line up correctly and the rpm is correct? Thanks everyone for the help.Was thinking about making another bracket to use with the delco alt.
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Hurst
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Joined: 11 Sep 2009
Location: Midway, Ky
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Posted: 29 Nov 2010 at 6:28pm |
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The 7000 used a Delco 10si with a tach output on the alternator (3rd spade terminal). I wonder if this pulley would line up and be the correct size for the other 7000 series?
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
Points: 2316
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Posted: 29 Nov 2010 at 10:14pm |
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Yes on both counts,belts line up and tach is correct.At least as correct as can be with a belt driven system like this.Hurst-the 7000 tractor pulley is to small,plus it use a smaller width belt than the 7045.
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