HTH618C - HARVESTER 20 Mechanical Parts group 20 Mechanical 20 Mechanical . Tilt Unit With Swivel (310) Link Link (310 Light Duty Rotator) Rotator (310 Standard) Rotator (310 Light Duty) Rotator (Continuous Rotation) Hydraulic Assembly (Continuous Rotation) Manifold (Continuous Rotation) Swivel ( - 000018) Swivel - Limited Travel (000019 - ) Tilt Frame (310) (000025 - ) Tilt Frame (310) (000026 - ) Tilt Frame (Continuous Rotation) Head Main Frame Main Frame Guards Cover ( - 000018) Cover (000019 - ) Cutterbar Wear Plate Delimber Unit Standard Delimb Arms Delimb Arms (Cut to Length) Measuring Unit Length Measuring Wheels Feed Unit - Fixed Feed Unit ( - 000024) Feed Unit (000025 - ) Feed Unit Arms Feed Unit Feed Arm Motors Seal Kit (TMVW 500 / 630 Motors) Feed Wheel Options Lower Delimber Arms Lower Delimb Bushings