Forestry Machine Cab Mounting Cylinder Pin Removal

This timber harvesting machine was suffering from a worn spherical bearing in the lower end of a hydraulic cylinder which controls the levelling system for the cab and crane. The decision to replace the bearing during a routine service period was taken. The cylinder mounting pin was found to be very tight (a 30 ton jack couldn’t move it.). The obvious answer would have been to drill out the pin using a heavy duty drill; however access in line with the centre of the pin was extremely tight. The metal disintegration machine was used, fitted with an “Offset” arm to split the pin along its axes so allowing it to be driven out from the cylinder and the machine’s chassis. In this case, access was the main problem but this method can also be used when the pin is made from very hard materials, where drilling can be difficult.

High capacity Timber Harvesting Machine in action in the forest	Metal disintegration machine fitted with offset arm to allow access to end of pin