60 Amp Alternator wiring question

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vms1942
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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 2nd, 2014, 6:16 pm

Thanks for the photos guys.

They say a picture is worth a 1000 words and it certainly proves true in this case. It's been a real strain on my brain (which doesn't take very much anymore) trying to visualize what should be there from reading the blurry schematics that came with the harness.

Thanks again

Greg
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

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Re: 60 Amp Alternator wiring question

Unread post by whiterabbit » September 2nd, 2014, 6:59 pm

These guys will get you straight. Lord knows they helped me with all my crazy questions during my rebuild!
Yes, it's hard to visualize what folks are trying to explain so that's why everyone here says we need pics.
That and we like looking at M151s! :D
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vms1942
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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 4th, 2014, 10:16 pm

One simple question.

Is the shaft diameter on a 25 amp two groove pulley the same as the 60 amp three groove pulley?
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

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Re: 60 Amp Alternator wiring question

Unread post by rickf » September 5th, 2014, 7:02 am

The shaft diameter is the same but the pulley diameters are different. The pulleys will interchange but the belt sizes will be different. If you are going to put the two groove pulley on the 60 amp alternator it will not charge at idle I do not believe. Go with the three groove and just use two belts, you will have to get the A2 belt size.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

vms1942
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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 5th, 2014, 8:49 am

Thanks for the info Rick,

I am debating rather to go with the three groove pulley's all the way around, that is what I would really like to do, mainly because I love the way it looks. I assume it would still be correct for the A1 to have 3 groove pulleys if it had a 60 amp Gen/Alt.

I haven't found anyone that has all three of them for sale, any suggestions anyone?

BTW: This week I discovered what a great guy Joe Hall from Vintage Wiring of Maine is. I sent him my photos and questions and he put together a 3 wire harness assembly for me and has shipped it to me no charge! Kudo's to Joe for his customer service!
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

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rickf
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Re: 60 Amp Alternator wiring question

Unread post by rickf » September 5th, 2014, 10:02 am

I am curious what that harness cost. I would like to do the same thing but the last time I checked his prices were outrageous. PM me the price if you don't want to post it.
Three belts on an A1 could be considered correct on later A1's since they were retrofitted with the adapter harness's. Finding three belt pulleys should not be too hard, they were on all A2's and most replacement engines. Should be at least some junkers out there with pulleys on them.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: 60 Amp Alternator wiring question (UPDATE)

Unread post by vms1942 » September 13th, 2014, 8:52 am

Thanks to all of you that helped me with this issue. I bought one of the conversion kits, $18.50 on ebay.
But the best part is that Joe Hall of Vintage Wiring of Maine built me a special harness and sent it to me for FREE! Now that is what I call customer service! The way Joe handled my problem made a point of the old adage, "You Get What You Pay For". VWOM's prices are high, but he made the problem less painful with his actions, and expedient follow-up.

I ended up installing the VWOM harness for two reasons

1. The adapter harness made by VWOM was a perfect fit, which made the harness look like it had been an original 60 amp installation, plus Joe had tagged each connector with where to connect them. This made it a breeze to install

2. The instructions with the government issue kit were confusing at best, no real schematic to follow and the diagram was more focused on the placement of the harness and mounting clips, than it was on making the connections. It was very confusing.

Again thanks to all of you for your help.

Greg
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 13th, 2014, 9:06 am

rickf wrote:The shaft diameter is the same but the pulley diameters are different. The pulleys will interchange but the belt sizes will be different. If you are going to put the two groove pulley on the 60 amp alternator it will not charge at idle I do not believe. Go with the three groove and just use two belts, you will have to get the A2 belt size.
Okay, another problem just raised it's ugly head!

I ordered all three of the 3 groove pulleys from Army Jeep Parts, the pulleys arrived really quick, however when I installed them, the shaft diameter of the alternator pulley they sent me is 7/8". The shaft on my alternator is 5/8". One friend said it looked like an alternator from a Humvee.

My questions now are;

1. What should the outside diameter of the alternator pulley be?

2. Can anyone confirm that this alternator is from a Humvee?

3. Any idea on how I would order a pulley for this alternator? Order for a Humvee?

4. Would a pulley for the Humvee be the correct size diameter to charge the system properly?
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

Fil Bonica
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Re: 60 Amp Alternator wiring question

Unread post by Fil Bonica » September 13th, 2014, 9:44 am

Alternators of that amp rating are all the same. There is no such thing as a special 60 amp HMMWV version
Just measured a a shaft off of one and it is 5/8 "
Probably you were shipped the wrong pulley.

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rickf
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Re: 60 Amp Alternator wiring question

Unread post by rickf » September 13th, 2014, 12:11 pm

I have never heard of a 60 amp alternator with a different size shaft from the others. The Humvee is mounted on a diesel so the idle RPM is around 650 which should work out but they run five or six belts on the water pump so I don't know how many go around the alternator. That pulley would not fit if it had that many grooves, it would be too long. I thought you were staying with the 25 amp system you have?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

vms1942
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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 13th, 2014, 4:11 pm

Ok, it sounds like they just shipped the wrong pulley. I tried calling Army Jeep Parts on Friday but apparently I called too late. They are in the Eastern time zone and I'm in the Central time zone.

Rick, I had an aftermarket alternator that came on the M151a1. I am replacing it with the 60amp system. I ordered a 60 amp harness from VWOM, but it turns out they sent me a 25amp harness. Joe Hall, made up an adapter harness and sent it to me free of charge to correct my harness to include the connections to the 60 amp alternator. You may be thinking about my decision of keeping the 25 amp harness and adapting it versus sending it back to VWOM for an exchange. I already had the harness installed, so I wasn't willing to pull it out and then install another harness.

Thanks for all your help guys, I really appreciate it.

Greg
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

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rickf
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Re: 60 Amp Alternator wiring question

Unread post by rickf » September 13th, 2014, 4:59 pm

The front harness is an easy change, the rear one is the bear.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

vms1942
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Re: 60 Amp Alternator wiring question

Unread post by vms1942 » September 13th, 2014, 5:42 pm

I know what you mean. It took me and another guy almost 3 hours to get the rear harness threaded through the frame. It's seems to be a lot like installing the heater and defroster, there's just not an easy way to do it!
1942 WC-54, Restored and now in Fagen Memorial Museum, Granite Falls, MN
1942 Ben Hur Trailer Completed
1942 M3 Anti Tank Gun (Missouri Military Academy)
1944 MB tub (made one from two bad ones. one wrecked back and one wrecked front) Completed
1942 GPW, Matching serial numbers (Restoration pending)
1945 WC-51 Completed
1966 M151a1, Completed

acudanut

Re: 60 Amp Alternator wiring question

Unread post by acudanut » July 19th, 2018, 8:32 pm

vms1942 wrote:I need help with wiring a NOS 60 amp alternator.

Bare with me guys, this is the first M151 I have restored, but I need your help on this.

I bought a NOS 60 amp Alternator to install on an M151a1. The vehicle came with an aftermarket 60 amp alternator and the leads are cut, and I have replaced the wiring harness with a new one from Vintage Wiring of Maine.

The schematics that came with the harness show three wires going to the alternator, #5, #3, # 568, The new alternator has one wire coming from it which I assume plugs into the #5 by separating the metal connector (I don’t know why this connector came with a 60 amp harness, but it is tagged #5 and has a rubber connector to remove the metal connector.

My pictures can better describe my situation. I had a friend send me a photo of his 60amp alternator wiring and I placed my questions etc. on that photo which is included below.

Hopefully one of you M151 Guru's can tell me how to wire this?

Image
Photo #1 : Wiring for alternator from Vintage Wiring of Maine

Image
Photo #2: Inside Connector

Image
Photo #3: Wiring connector on my NOS 60 amp alternator

Image
Photo #4: Photo of my friends M151 (A2 engine?) 60 amp alternator / I have written questions, etc on the photo.

I too now have the same problem. The only wire coming from my jeep is a male 3 pin connection. No where to plug it in.

acudanut

Re: 60 Amp Alternator wiring question

Unread post by acudanut » July 19th, 2018, 8:37 pm

Hopefully, surveyor can post 2 pic's for me. :D

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