Spring for original 8N drawbar hanger

Nszydlek · Jun 24, 2015

Does anyone know of a source for the spring in the original 8N drawbar hanger that locks the clevis pin (8N804) in place?
I have seen the pins but not the spring.

TheOldHokie · Jun 24, 2015

(quoted from post at 15:24:51 06/24/15) Does anyone know of a source for the spring in the original 8N drawbar hanger that locks the clevis pin (8N804) in place?
I have seen the pins but not the spring.

Interesting. I had to look at the OEM clevis to even begin to comment and it's not what I would have guessed. The spring appears to be nothing more than a conventional music wire sort of compression spring with 2-3 coils. That part is easy. Buy a spring of the suitable diameter and wire size, cut off 2-3 coils, and install in the clevis. The bigger question is how is it installed inside the stamped steel cover of the clevis. The cover on mine is attached to the body of the clevis with three rather substantial (~3/8" long) welds. So to replace the spring it appears one would have to grind off the welds, position a new spring in place, and reweld the cover.

Simple ehh?

TOH

Nszydlek · Jun 24, 2015

(quoted from post at 18:34:28 06/24/15)

(quoted from post at 15:24:51 06/24/15) Does anyone know of a source for the spring in the original 8N drawbar hanger that locks the clevis pin (8N804) in place?
I have seen the pins but not the spring.

Click to expand...

Interesting. I had to look at the OEM clevis to even begin to comment and it's not what I would have guessed. The spring appears to be nothing more than a conventional music wire sort of compression spring with 2-3 coils. That part is easy. Buy a spring of the suitable diameter and wire size, cut off 2-3 coils, and install in the clevis. The bigger question is how is it installed inside the stamped steel cover of the clevis. The cover on mine is attached to the body of the clevis with three rather substantial (~3/8" long) welds. So to replace the spring it appears one would have to grind off the welds, position a new spring in place, and reweld the cover.

Simple ehh?

TOH

I think it can be done by turning the spring ,like a screw, into the hanger.
From some of the pictures I have seen, it looks like a washer was attached to the spring, or at least was on top of it, and provided a flat surface for the pins on the clevis pin to ride on.
I guess I'll try the hardware store and see if I can find a spring that will do the job.

Thanks for your help!

John Smith8N · Jun 24, 2015

I don't know of any source other than borrowing one from another bracket. The spring is cone shaped, snug to the pin on the outer end and larger on the end against the bracket. It has to be that way so the coils can compress inside each other. The spring basically flattens out when the pin is inserted and turned under the stops. A straight spring won't work as the coils bind before the pin can be pressed in far enough to turn. The spring can be replaced (if you are patient and careful) by starting with one end of the coil and "screwing" it in or out through the retainer hole.

Nszydlek · Jun 24, 2015

(quoted from post at 20:28:01 06/24/15)
I don't know of any source other than borrowing one from another bracket. The spring is cone shaped, snug to the pin on the outer end and larger on the end against the bracket. It has to be that way so the coils can compress inside each other. The spring basically flattens out when the pin is inserted and turned under the stops. A straight spring won't work as the coils bind before the pin can be pressed in far enough to turn. The spring can be replaced (if you are patient and careful) by starting with one end of the coil and "screwing" it in or out through the retainer hole.

That's good information. I did not think about it being a conical spring. It makes complete sense.

TheOldHokie · Jun 25, 2015

(quoted from post at 20:35:38 06/24/15)

(quoted from post at 20:28:01 06/24/15)
I don't know of any source other than borrowing one from another bracket. The spring is cone shaped, snug to the pin on the outer end and larger on the end against the bracket. It has to be that way so the coils can compress inside each other. The spring basically flattens out when the pin is inserted and turned under the stops. A straight spring won't work as the coils bind before the pin can be pressed in far enough to turn. The spring can be replaced (if you are patient and careful) by starting with one end of the coil and "screwing" it in or out through the retainer hole.

Click to expand...

That's good information. I did not think about it being a conical spring. It makes complete sense.

I considered the posibility that it could be "screwed" in but that looked pretty difficult. In any event here is a source for conical springs of various lengths and gauges. Looks like you might be able to cut a section the proper size out of one of the larger diameter ones

[u:cd5cc7a48f]Confined Space Conical Springs[/u:cd5cc7a48f]

TOH

Spring for original 8N drawbar hanger

Nszydlek

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TheOldHokie

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Nszydlek

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John Smith8N

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Nszydlek

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TheOldHokie

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