Construction and other equipment - I600 fork lift tractor starter question

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I600 fork lift tractor starter question

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=203851
Printed Date: 27 Oct 2024 at 5:29am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: I600 fork lift tractor starter question

Posted By: Jaylt1
Subject: I600 fork lift tractor starter question
Date Posted: 26 Oct 2024 at 3:12pm

Hello, forgive me if this sounds a bit newbie...
I have a 1960s i600 gas engine fork lift tractor and I believe it is positive ground system. There is a yellow generator on the front end accessories, and someone thought they would put a 12v car battery (800cca) to fire it up out of a 25 year slumber..
Now the starter won't turn, while the battery was in it hooked to neg. Frame ground and positive to the solenoid, I did get 12vdc reading and 17vdc to the small post when momentary contact was closed during "start" from the key..
But there is a no crank situation. I did take the starter out and disassembled it to check the brushes and the armature, the armature and the small copper ring
Behind the windings do not have continuity.
I'm assuming that is correct.

But all four brushes do have continuity to the solenoid (starter side) and continuity between all four brushes, and the field pads inside of the case ..

Is this correct? What else would I need to troubleshoot the starter to verify everything that has continuity does, and everything that does not have continuity doesn't?

Please help me understand this starter!!
It is a ac Delco Starter 1107758
12v 1960 on... I think??
Thanks in advance

Replies:

Posted By: DiyDave
Date Posted: 26 Oct 2024 at 3:44pm

To verify the ground, look at the way the coil and points are wired. If the + terminal on the coil goes into the points, it's a + ground. (that is, if someone hasn't effed with it.)

Also, if the battery terms were reversed, one clamp will show evidence of tightening, and the other will have evidence of being spread (assuming that the clamps have not been replaced) + and - battery posts are not the same size, one is smaller, I have forgotten which...

Have you tried to start, with the starter removed, and grounded to the frame?

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Posted By: Jaylt1
Date Posted: 26 Oct 2024 at 3:51pm

Have haven't tried to bench test it with power yet, just been cleaning and a lot of Internet research to figure out what I'm dealing with here.
I am not familiar with trouble shooting positive ground systems.

I wasn't sure if I should ground the frame of the starter and hit the lead from the solenoid with 12+ or reverse that to bench test it ?

Posted By: Ian Beale
Date Posted: 26 Oct 2024 at 7:07pm

IIRC the starter won't be fussy

Posted By: Jaylt1
Date Posted: 26 Oct 2024 at 7:30pm

So I found some numbers on both sides of the engine and on the bell housing of the transmission..

Sitting in the seat of the forklift engine behind you,
Left side was NJ198 located below the steering knuckle
Right side on a raised block was "I60 14023-R

And on the bell housing on the same side was 1974...
Hopefully this helps to find a wire diagram... I've been searching for hours with no luck