Many customers have a discussion about pulling pivot pins that are seized, stuck, rusted in place? We are in the process of removing the lift and crowd cylinders in construction machines like excavator, doozer or wheel loader, skid steer whose lubricator stopped working, and it has been a real struggle. We are not sure of what proper equipment to use, how to secure the loader arms safely, we have just been trying to beat the pins out with hammers and drifts and it's painfully slow and treacherous going.

How can we get the pins out of the base ends of the lift cylinders? The other ends of the pins are buried in the machine. How can we secure the loader arms properly so they dont come down on us when we get the pins out? How can we safely sling the cylinders so we can lift them out? Most importantly, how can we safely work in the loader arm area with so many trip/slip fall hazards and such heavy equipment to hold with our hands?

Bison provide special solution for that common problem - its heavy duty threaded adapters 

we offer a solution in a few steps

Please see one an example

Our cliet asked us: I want to pull the main pin from a D6 CAT dozer blade. 

Step one  - When you pull the top cap off you can see the main shaft has threads in it to pull it.  The main shaft has a number 160-5691 and thread size M30

Step two - screw the threaded adapter into the hole on the shaft

Step three - screw the Bison high strength puller  threaded rod into the hole on the adapter and press pulling the bottom pin out using our hollow cylinder