This 848 has been transformed into a forwarder, utilizing the Pitts trailer.
Breakdown:
848-front blade is stationary as it has the capability to attach to the FDR Forestry Dozer Blade. All functions work on the blade, https://www.fdrlogging.com/
Pitts Trailers- (matching wheel options)
Autoload-( works like container system) trailer capacity 150k liters, unloads into a large wood pile on the ground (seen in screen shots) the pile can store 550k liters.
Non Autoload- Trailer has chains and binders once strapped