roll pin into output shaft
 

hey guys we are trying to put the roll pin into the output shaft but we cant seem to get it in we tryed expanding the metal with heat ,oil and we already broke 2 of the roll pins we cant get it in Any other temas having problems with this

Re: roll pin into output shaft
 

We're having the same problem, and totally destroyed two of the roll pins trying to get it in. Actually we order some new pins but they only come in big bunches. Like you asked before, how do you get it in? We tried hammering lightly, using a rubber mallet, and using oil as liberation.

Re: roll pin into output shaft
 

Had some problems, but got what seemed like a reliable method:

1. Opened the holes a bit with a punch. This should allow the pin to fit in slightly at first.
2. Lightly tapped it in with a steel hammer, until it is set in the shaft and won't fall out.
3. Switch to a hammer with a softer head material (not too soft though), and continue tapping.
4. If the pin begins to deform or bend, shape carefully back into place with pliers or a hammer. You might have to do this a couple times.

Should work, just be careful with it and don't try to hammer it in with all your force.

Re: roll pin into output shaft
 

We assembled our transmissions a few days ago - the roll pin went in fine on one, broken on the other. Just make sure you get it straight before forcing it in with either a hammer or a press.

Re: roll pin into output shaft
 

When putting the roll pin in, the less hits the better. If you watch the assembly video on andymark.biz, you'll notice he gets it in with about 4-5 hits. We tried it slow at first and mushroomed the head, then gave it 3 good quick wacks, WAHLAH! perfect.

Re: roll pin into output shaft
 

I agree with Chuck, you have to do a few hard hits or else it will flatten the top. The first one went in fairly easily for me, but you have to bend it back with a pair of pliers so it stays straight. The second time, I didn't bend it back and it went in way crooked. I ended up breaking off the bent and mangled mess, and after that there was only 1 or 2 mm left on each side, which happened to be enough to hold the gear on.

Re: roll pin into output shaft
 

We started it with a few light taps and finished it off with a few big hits.

Re: roll pin into output shaft
 

I first tried using an Arbor press which pretty much mangled the first pin, and then I used their suggestion of light taps with a hammer. It worked rather well for me, though it took awhile. It mushroomed a little bit but it went in and is holding the gear in rather well.

Re: roll pin into output shaft
 

maybe drill the hole out a few thou?

Re: roll pin into output shaft
 

The key to getting a tight rolled pin in is to make sure it starts to fold in on itself (axial). We noticed that on end of the pin was slightly more tappered than the other. A sqeeze with pliars will encourage the fold as you smack it with a hammer. It should go in fine after that. If you don't get an overlap it just plain won't go in.

Re: roll pin into output shaft
 

A really big hammer!

Our team had the same problem. We stated it with a little hammer tapping and then used a vise as a press to finish it off.

Re: roll pin into output shaft
 

Yeah we just did those today.

We just used a Vice to get the pin through the hole and then we hammered it to get it all the way through.

However the end that we hammered mushroomed we tried our best to fix it but the gear that rests on it has a slight wobble

Is that bad?

Re: roll pin into output shaft
 

bigflip: i would just try to take a pair of pliers and break off the "mushroom head" that's making it wobble. Like I said, all you need is 1 or 2 mm on each side. The last thing you want is the gearbox to bind or jam in the middle of a round.

Re: roll pin into output shaft
 

we stopped by the hardware store today and bought two 3/32" split pins for 32 cents including tax.

Re: roll pin into output shaft
 

we broke 2 of our's and now we have to buy a new output shaft since the pin broke halfway inside and is completely jamed...