470GLC - EXCAVATOR 3340 Backhoe & Excavator Frames Parts group 3340 Backhoe & Excavator Frames 3340 Backhoe & Excavator Frames . Heavy Duty Boom, 7.0 m Boom 6.3m Standard Boom Pins and Light Arm 3.4m Pins and Seals, 3.4 m Arm Arm (2.9 m) Pins and Seals, 2.9 m Arm Arm (3.9 m - 12 ft 10 in.) Bucket Link Arm Link Boom Hydraulic Lines (7.0 m)