JD 318 rear Alternator

7529 Views 27 Replies 12 Participants Last post by Marcintosh, Jan 25, 2012

toolmaker1045

Discussion Starter · Jan 21, 2012

Install new alternator to rear of jd 318 it has a stub shaft coming out of the rear will not use PTO will turn as soon as engine starts.Running 110 amp with timing belt also dc thermal electric heater Here is the plate I made for the rear which holds alt and drive shaft to stub shaft.Will send photo,s when finish.Will only draw 1 1/2 hp under full load which i do not see.

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D-Dogg

· #2 · Jan 21, 2012

Looks like you'll have all the power you need for heat and lights. Nice job!

PA318Guy

· #3 · Jan 21, 2012

Now that in a great idea!

Alberta 7.3

· #4 · Jan 21, 2012

Is that an automotive alternator, or something you got from JD?

toolmaker1045

Discussion Starter · #5 · Jan 21, 2012

Its a new boat alt with a bi directional fan you can get so you can run alt in either direction Delco 10SI

Alberta 7.3

· #6 · Jan 21, 2012

I like your idea. I wish my tractor had a rear output. I have to cram my alternator under the hood.

blown67

· #7 · Jan 21, 2012

I thought the Delco 10SI needed to hit 3000 rpms before it started to charge when set-up as a one-wire? Or is this not being setup up that way?

D-Dogg

· #8 · Jan 21, 2012

blown67 said:
I thought the Delco 10SI needed to hit 3000 rpms before it started to charge when set-up as a one-wire? Or is this not being setup up that way?

Coming straight off the pump shaft, he ought to be seeing 3,450 RPM. :fing32:

blown67

· #9 · Jan 21, 2012

Oh, I didnt realize, I thought it was 2000 rpm for some reason.

gburnett

· #10 · Jan 21, 2012

Also speed depends on the size of the pulleys on the tractor and the alternator

biker3777

· #11 · Jan 21, 2012

Rear shaft turns same rpm as the engine.

bvp2000

· #12 · Jan 21, 2012

Now this could become a very useful modification, I look forward to seeing it completed!

toolmaker1045

Discussion Starter · #13 · Jan 21, 2012

Almost done bracket made flange bearing and adapter shaft made.It is a little easyier for me since I am a toolmaker and have all the machine i need to make anything.Will put up pictures of everything Monday nite have all other parts at work. On the bracket I made you will see radius of threaded holes that to adjust timing belt.
Ok snowing in CT waiting.

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D-Dogg

· #14 · Jan 21, 2012

[email protected] said:
Almost done bracket made flange bearing and adapter shaft made.It is a little easyier for me since I am a toolmaker and have all the machine i need to make anything.Will put up pictures of everything Monday nite have all other parts at work. On the bracket I made you will see radius of threaded holes that to adjust timing belt.
Ok snowing in CT waiting.

I missed that you are using a timing belt the first read through. Will you maintain a 1:1 ratio?

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toolmaker1045

Discussion Starter · #15 · Jan 21, 2012

Yes I will maintain 1 to 1 ratio,also if it was not for this forum I would never know about the stub shaft running 1 to 1 with the engine. Also I saw the rear tiller for the 318 and saw the pto without the 2000 rpm unit just a pulley so I said HMMMMMMMMMMMMMMMMM.

Glockem

· #16 · Jan 21, 2012

This is pretty neat. Looking forward to details and pictures.

stladrill

· #17 · Jan 21, 2012

Glockem said:
This is pretty neat. Looking forward to details and pictures.

:ditto: :thThumbsU

toolmaker1045

Discussion Starter · #18 · Jan 25, 2012

The latest picture

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toolmaker1045

Discussion Starter · #19 · Jan 25, 2012

Next picture

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toolmaker1045

Discussion Starter · #20 · Jan 25, 2012

Third one

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