470GLC - EXCAVATOR 3340 Backhoe & Excavator Frames Parts group 3340 Backhoe & Excavator Frames 3340 Backhoe & Excavator Frames . Heavy Duty Arm (3.4 m - 11 ft. 2 in.) Semi-Long Arm (3.9 m - 12 ft 10 in.) Long Arm (4.9 m - 16 ft. 0.91 in.) Standard Boom, Pins and Light Heavy Duty Boom, 7.0 m Arm Link