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Roll Pin Question


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#1 glgrumpy ONLINE  

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Posted September 05, 2012 - 10:30 PM

Tore into GT14 front axle today. There were two rollpins in the steering arms! One big one, say 5/16" and another inside of that, say 3/16". Is that factory or just some mechanics trick?? Have never seen that before. The ends were painted, but could have been a repainting really.

#2 chris m OFFLINE  

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Posted September 05, 2012 - 10:40 PM

I have never run into that before.

Sounds like someone might have sheared one off before and then tried using 2 to make it stronger?

You just never know. But I have worked on machines from all over the world and probably have removed and installed thousands of roll pins and haven't seen that as a factory install.

But you never know.

#3 Cvans ONLINE  

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Posted September 05, 2012 - 10:44 PM

Sometimes when the pins get loose and the holes become distorted they will drill the holes out to get them round again and install a larger roll pin. I've seen it done and have done it myself. Nothing wrong with the practice as long as the holes aren't enlarged to the point that the parts loose their strength.

#4 chris m OFFLINE  

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Posted September 05, 2012 - 10:53 PM

Sometimes when the pins get loose and the holes become distorted they will drill the holes out to get them round again and install a larger roll pin. I've seen it done and have done it myself. Nothing wrong with the practice as long as the holes aren't enlarged to the point that the parts loose their strength.

Done that many times myself. I just never saw a pin inside a pin before.

#5 KC9KAS OFFLINE  

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Posted September 06, 2012 - 04:10 AM

I have seen people install a smaller diameter roll-pin into a larger roll-pin when the spring tension of the larger pin has been lost.
I would not think that a roll-pin from the factory would have lost it's tension before it was sold, so that is an "after-market" repair.

#6 KennyP ONLINE  

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Posted September 06, 2012 - 05:09 AM

I have seen people install a smaller diameter roll-pin into a larger roll-pin when the spring tension of the larger pin has been lost.
I would not think that a roll-pin from the factory would have lost it's tension before it was sold, so that is an "after-market" repair.

I'm thinking the same thing. Some one just wanted to tighten it up. Probably time for a new pin.

#7 JDBrian OFFLINE  

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Posted September 06, 2012 - 05:55 AM

Thats a neat idea to keep in mind when one of those pins starts to loosen.

#8 mjodrey OFFLINE  

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Posted September 06, 2012 - 05:59 AM

I have seen that once or twice,but that's it.

#9 GWest OFFLINE  

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Posted September 06, 2012 - 07:59 AM

The Wheel Horse factory did do that and have seen it illusrated in the parts lists.

If you look at the shaft that the snowthrower auger runs on, the left side wheel arm item 28 is a roll or split pin. Item 29 is the smaller spirol pin inside it. Snowthrower model number 86-42ST01.
https://lookup3.toro...fm?xCaller=Toro

Often hardware sizes are not posted. Have figured many of them out if anyone needs some.

Garry
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#10 bh115577 OFFLINE  

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Posted September 06, 2012 - 08:17 AM

Double roll pins are sometimes used in steering and axle parts for extra safety. I have seen some turf equipment and golf carts that even have a safety wire running through it.
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#11 glgrumpy ONLINE  

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Posted September 07, 2012 - 11:44 PM

G-west is correct. I was looking over the cluttered parts book for it and there it was, two pins each side. Same sizes I mentioned in orig post. Hmmm! New one to me! :smilewink:




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