The National Crane 671E2 is one of five models in the 600E2 Series boom truck lineup.  It is equipped with a 27-71 ft. (8.23-21.64 m) three-section telescopic main boom. This model comes with an optional 25-45 ft. (7.62-13.72 m) two-section jib for a maximum tip height of 125 ft. (38.25 m).

Best in class performance and serviceability

• The steel torsion box and flatbed further reduce frame flex
• Speedy-reeve boom tip and sheave blocks simplify rigging changes by decreasing the time needed to change line reeving
• Crane components painted before assembly reduce the chance of rust, improve serviceability and enhance the appearance of the crane
• A control knob located on the swing motor brake release valve can be easily adjusted to the crane operator’s swing speed preference
• Engine start/stop switches
• Emergency stop overrides located at the crane operator control station
• Hydraulic reservoir capacity of 66 gal

Serviceability

• Bearings on the boom and retract cables can be greased through access holes in the boom side plates.
• Removable winch allows the internal telescoping cylinder to be removed quickly, without dismantling the boom
• Internal anti-two-block wire routing eliminates external reel and wire to protect crane components
• The boom sheave case is open, allowing access to replace the internal anti-two-block wire and to observe internal boom components
• Internal boom parts have been reduced, decreasing service time when rebuilding the machine