7040 Alternator
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=195044
Printed Date: 13 Aug 2025 at 1:41pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7040 Alternator
Posted By: Red Bank
Subject: 7040 Alternator
Date Posted: 08 May 2023 at 9:17pm
| Looking for an alternator for a 7040. Has a Wilson 90-01-3081 on it currently(Delco Remy style). Does anyone know where I could possibly get a one wire alternator with the tach terminal on it? Thanks in advance. |
Replies:
Posted By: steve(ill)
Date Posted: 08 May 2023 at 9:33pm
something like this ? ............ pulley diameter is important to get right rpm indication. ------------- Like them all, but love the "B"s. |
Posted By: Red Bank
Date Posted: 08 May 2023 at 9:40pm
| Steve, yes that may work , thanks for finding that I looked at their website and couldn’t find it, I will have to use my old pulley probably because it’s a two groove pulley. |
Posted By: ryan(IN)
Date Posted: 09 May 2023 at 5:54am
|
Why do you want a 1 wire? ------------- ryan 1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62 |
Posted By: Gary Burnett
Date Posted: 09 May 2023 at 6:43am
DB has the alternators with the double pulley,very good company BTW.
|
Red Bank wrote:Posted By: Red Bank
Date Posted: 09 May 2023 at 7:15am
| I want a one wire because right now the keyed ignition wire going to the two wire plug on the alternator does not have power on it at all, so what I have been doing is cranking tractor and then jumping across the two terminal plug to excite the alternator. I could run a new wire from the ignition switch to the alternator but one wire alternator kinda makes everything easy |
Posted By: Steve in NJ
Date Posted: 09 May 2023 at 8:50am
|
Take a visit to our Website and read about 1 wire Alts vs 3 wire Alts. There's a lot more information there than "easy". Especially on larger Tractors that have more current usage up at the dash... If you go down the header to "More" a drop down window appears. You want to click on more Technical Info. Roll down to the Alternator information. Makes for a good read. Steve@B&B bb-customcircuits.com ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |