Find the movie of this MOC on youtube:
https://youtu.be/riV3-7A4528

This MOC is an improvement of the official set 8263.
The goal was to motorise the snowgroomer movement and tools with Power Function.

The tracks have been enlarged to be more realistic.
Propulsion is done by a PF-XL motor while steering is done through a PF-M. A system of 
double differential based on the Sariel's works is used.

Front and aft blade are actuated by mini-linear actuator each thanks to PF-L motor.

Cabin has not be modified at all and a crane with winch and lights have been added.