LEGO Technic Excavator (8851) original instructions manual | eBay
LEGO Technic Pneumatic Excavator 8851. - YouTube
Vintage Lego Technic Set 8851 Review...Also With Motorized Version! - YouTube
Lego Technic 8851 Excavator (1984) - YouTube
LEGO® Technic 8851 Excavator – LC-jrx
LEGO 8851 Technic Excavator | BrickEconomy
Recently pieced together this old pneumatics set from 1984 from a used lot so I thought I would compare it to some of my more modern pneumatic sets : r/lego