I600 fork lift tractor starter question

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   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 

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Jaylt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 hours 31 minutes ago Location: Michigan Points: 4	Post Options Post Reply Quote Jaylt1 Report Post Thanks(0) Quote Reply Topic: I600 fork lift tractor starter question Posted: 12 hours 20 minutes ago 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

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DiyDave Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: Gambrills, MD Points: 51530	Post Options Post Reply Quote DiyDave Report Post Thanks(0) Quote Reply Posted: 11 hours 48 minutes ago 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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Jaylt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 hours 31 minutes ago Location: Michigan Points: 4	Post Options Post Reply Quote Jaylt1 Report Post Thanks(0) Quote Reply Posted: 11 hours 41 minutes ago 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 ?

Ian Beale Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 03 Oct 2011 Location: New South Wales Points: 973	Post Options Post Reply Quote Ian Beale Report Post Thanks(0) Quote Reply Posted: 8 hours 25 minutes ago at 7:07pm
	IIRC the starter won't be fussy

Jaylt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 hours 31 minutes ago Location: Michigan Points: 4	Post Options Post Reply Quote Jaylt1 Report Post Thanks(0) Quote Reply Posted: 8 hours 2 minutes ago 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