UNDERCARRIAGE / Upper And Lower Roller DISASSEMBLE LOWER ROLLER W166-03-06-006 1 - Floating Seal (2 Used) 3 - O-Ring (2 Used) 5 - Pin (2 Used) 7 - Bushing (2 Used) 2 - Axle 4 - Collar (2 Used) 6 - Plug (2 Used) 8 - Roller W3-6-8 4 5 6 3 2 1 7 8 7 1 3 4 7 5 6