Hein-Werner HW93806 3-Ton Heavy-Duty Truck Engine CraneHein Werner HW93806 3 Ton Heavy Duty Truck Engine Crane Hein Werner HW93806 3 Ton Heavy Duty Truck Engine Crane The Hein Werner HW93806 3 Ton Heavy Duty Truck Engine Crane is equipped with an air pump that operates on standard shop air and has smooth rise, hold, and lowering control. The HW93806 features 3 boom extension positions, 3 leg extension positions, swivel hook for full rotation of load, and roller bearings in wheels for ease of movement.