Running Rough

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ajhbike
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Re: Running Rough

Postby ajhbike » Tue Sep 12, 2017 7:08 pm

I took the band off and there is some fibrous material on the inside circumference...and it broke in half when it expanded. Does this need to be replaced and if so, what is the material?

Bob McCarty
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Re: Running Rough

Postby Bob McCarty » Tue Sep 12, 2017 8:20 pm

Does it look like a thick waxed/unwaxed brown kraft paper? That was sometimes under the band.
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staninlowerAL
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Re: Running Rough

Postby staninlowerAL » Tue Sep 12, 2017 8:43 pm

ajhbike wrote:I took the band off and there is some fibrous material on the inside circumference...and it broke in half when it expanded. Does this need to be replaced and if so, what is the material?
This is intended to act as a dust/moisture seal for the generator. You can use a paper type material or do like the generator/starter repair shop that's near me and use 2 inch wide duct tape and cover it with the band, then trim off the excess width.

ajhbike
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Posts: 418
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Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Tue Sep 12, 2017 8:54 pm

Thanks

ajhbike
Cub Star!!
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Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sat Sep 16, 2017 6:09 am

Need a bit of help here...I disconnected the brushes and the 2 wires from the generator body and I forgot to shoot a pic of how to reconnect. Which wire goes to which brush?
Attachments
Generator wires resized.jpg

Jim Becker
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Re: Running Rough

Postby Jim Becker » Sat Sep 16, 2017 8:11 am

The one directly across from the grounded brush connects to the A terminal. The other brush is offset from the other 2 and connects to the field winding.

ajhbike
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Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sat Sep 16, 2017 7:15 pm

So put the generator back with the new belt and after half a day I learned 2 things....1 is that I wired the brushes wrong (Jim- I had already committed and didn't know that I didn't do it right...wrong!) because although the cub started up right away, the generator started smoking a bit and got hot. The ammeter was pinned on the discharge side. I reversed the wires on the ammeter and it pinned to the charge side. Figured I wired the brushes wrong. But the PITA was getting the generator mounted and connected to the new belt. It was clear that the belt is too short....like a linear inch!

I got it at NAPA and they had cross referenced the one I brought in that was probably 30 years old. It was a 4L210W and it has to be too short. I checked the belt on my Loboy which ran well with its generator and the alternator when I converted and it seems narrower but the numbers are N7215 Extra Service T2. I will try and source the right belt.

Anyway, the tractor runs, I will put the Loboy generator on when I get the right belt and then try and figure out what I did wrong with the generator I cleaned up. I flunked old Wrenching with Rachel's class on Generators

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Don McCombs
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Re: Running Rough

Postby Don McCombs » Sat Sep 16, 2017 7:35 pm

These are the two NAPA belts for your Cub...

Gen - NBH 4L220W
Fan - NBH 2524308
Don McCombs
MD, Deep Creek Lake

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Proud Member of Maryland Chapter 39

ajhbike
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Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sun Sep 17, 2017 8:07 am

Thanks Don, it looks like I bought the right fan belt but the fan belt was definitely wrong.

ajhbike
Cub Star!!
Cub Star!!
Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sun Sep 17, 2017 5:44 pm

Yep, that belt was the right one. Installed, wired and she fired right up! Now I will open the other generator that got hot and see what I did. You think I ruined it if the brushes were wired backwards for 10 mins?

Jim Becker
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Re: Running Rough

Postby Jim Becker » Mon Sep 18, 2017 3:02 pm

Here is the wire placement. You may have also caused the damage by failing to polarize the generator (temporarily jump a wire from A to BATT before starting engine, explained in multiple past threads.
GeneratorWires.jpg

ajhbike
Cub Star!!
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Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Mon Sep 18, 2017 3:46 pm

okay, thanks....I will try and figure out which of the brushes is grounded (presume there is a short wire to that plate/end cap). Yep, didn't polarize it, wouldnt think that would damage it...how would you test or tell if the generator is damaged?

Jim Becker
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Re: Running Rough

Postby Jim Becker » Mon Sep 18, 2017 7:13 pm

ajhbike wrote:okay, thanks....I will try and figure out which of the brushes is grounded (presume there is a short wire to that plate/end cap).


The one I labeled "GROUNDED" in the picture.

ajhbike wrote:...how would you test or tell if the generator is damaged?


viewtopic.php?f=1&t=97017

ajhbike
Cub Star!!
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Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Mon Sep 18, 2017 7:46 pm

I got that it is the one marked grounded...couldn't miss that. Assuming the bulge/phlange in the cap is to the right (out of your picture), I now know what brush is in the grounded position relative to the phlange where the bolt goes through. Thank you.

ajhbike
Cub Star!!
Cub Star!!
Posts: 418
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub- Lorelai
1956 Lo-Boy FH- Rory
1951 Super C FH- Emily
Woods 59 CLF
54A Blade
54-L Blade
72" Rear Blade
Carryalls
Pallet Forks
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Tue Sep 19, 2017 7:39 am

Hoping I have this clear
Attachments
My Gen wiring resized.jpg


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