tools for pulling hydraulic cylinder pins?

[mech-tech]

The problem I am having is I work on the road, with only sometime having a small torch setup. I was wondering what tools you guys use for pulling stubborn cylinder pins? I see some guys weld on a nut for use with a slide hammer. I sometimes have luck knocking in a long punch and beating on the. I often times run onto pins that need to be pulled, but I have no way of hitting on the pin from the back. Besides the slide hammer, what do you guys use? Do they make pullers for the pins?

 

[sberry]

The problem I am having is I work on the road, with only sometime having a small torch setup. I was wondering what tools you guys use for pulling stubborn cylinder pins? I see some guys weld on a nut for use with a slide hammer. I sometimes have luck knocking in a long punch and beating on the. I often times run onto pins that need to be pulled, but I have no way of hitting on the pin from the back. Besides the slide hammer, what do you guys use? Do they make pullers for the pins?

A version with some adapters of a ball joint cclamp. I got a stuck pin out the other day, cut head off, pushed thru ball joint press.

 

[cbalthazor]

Porta Power and an 80ton ram usually works for most seized in pins I've come across; although, it does help that the shop keeps all the tooling needed around. Would be hard (expensive) to acquire enough goodies to be able to pull everything on your own.

If that fails, heat it up with the torch and then apply pressure with the 80ton ram.

With both of these methods, watch out while pulling- especially the really stuck pins- if you break your puller bolt or the pin gives, things tend to go flying.

 

[joecon]

We had a tool that looked like a hammer with one long end that was round and
the other end flat. You put the round end against the pin and beat on the flat end
it had a wood handle so you could hold it.We called it a bulldozer hammer.

 

[crewchief888]

We had a tool that looked like a hammer with one long end that was round and
the other end flat. You put the round end against the pin and beat on the flat end
it had a wood handle so you could hold it.We called it a bulldozer hammer.

also called a pin hammer, or "backout" hammer

 

[justanengineer]

A portable track press works wonders when you cant simply pound them out by hand.

 

[BullfrogJohnson]

also called a pin hammer, or "backout" hammer

Good ole' pin knocker. One of the best tools for a stubborn pin. Only works if you can get to the backside of the pin. Just dont let the OSHA man see you using it or he will ruin your day.

If heat wont budge it, I dont normally waste time trying to figure out a way to use a hydraulic puller. I will just lance it unless its a very expensive pin.

 

[Puckett_k]

For stubborn pins and assuming you have a new replacement an oxygen lance is buy far the best/ easiest way.

 

[Trash Mech]

I use an enerpac 20 ton hollow ram pulling kit, usually you have to weld a 1 inch nut to the pin though. I did make a couple adapters to thread into some Volvo stuff that has 30mm threads already. Or my 21lb slide sledge works pretty good too.