MACK RD688 Knuckle Boom

MACK RD688 Knuckle Boom featuring a heavy-duty vocational RD688 truck used as a carrier for a knuckle boom crane, with 19' Steel Flatbed, Hiab H322 Hipro, Lifting Capacity 22k, Allison Automatic, E7-350 with Super-Low Miles 36k and Real Clean. Located in Bay Shore NY 11706

MACK RD688 Knuckle Boom description featuring 19' Steel Flatbed with Hiab H322 Hipro, 22k lifting capacity, Allison Automatic, E7-350, heavy-duty cab, super-low miles 36k, and real clean. Located in Bay Shore NY 11706, a location that gives buyers a clear pickup and shipping reference.

This Mack RD688 knuckle boom listing is for buyers and sellers of used heavy equipment—fleet managers, contractors, dealers, and construction or agricultural companies—looking at a 1998 Mack R688 knuckleboom flatbed truck with a 19 ft steel bed, VIN 1M2P286C9WM036209, 36,596 miles, E7-350 engine, Automatic Allison HT 740RS transmission, 4:64 ratio, Hiab H 322 Hipro crane, and 22,000 lbs lifting capacity. It gives equipment buyers comparing used heavy machinery a clear look at specs, use cases, lifting capacity, chassis design, operator considerations, pricing factors, and shipping or pickup logistics before a sale. It is a severe-service Mack chassis commonly used where lifting and hauling happen on the same jobsite, and the RD688 chassis supports heavy-duty knuckle boom loaders and is engineered for severe-duty, harsh-environment work. The RD688 platform is also known for reinforced double-frame construction; RD688 trucks are commonly powered by Mack E7 engines in the 300 to 400 HP range and can be equipped with heavy-duty manual transmissions, while this unit has the E7-350 with an Allison automatic. Heavy-duty trucks in this class often use tandem rear axle layouts, and RD688 models typically use Camelback suspension for off-road articulation, so buyers comparing condition, driving load support, front axle and rear axle carrying context, and overall truck setup should also expect pricing for used heavy equipment to vary widely by condition.

A knuckle boom truck combines heavy hauling and precise lifting, so one truck can load, transport, and unload cargo. These trucks are widely used in material handling because they load and transport heavy materials efficiently. That combination matters on jobsites where one truck needs to place loads in tight spaces instead of relying on separate hauling and lifting equipment. It is built for precise material placement when the work requires accuracy at the jobsite. It also excels at horizontal load placement, which is useful when setting materials exactly where they need to go. The crane's two articulated booms improve maneuverability around structures and obstacles, while giving operators maximum visibility, more freedom of movement, and a strong lift-to-weight ratio. The articulated boom helps handle heavy materials in tight spaces where straight-boom equipment is less practical, and its horizontal folding design helps avoid vertical clearance restrictions. It can also fold compactly to preserve cargo space on the flatbed. Knuckle boom crane capacity commonly ranges from about 5 to 24 tons, and this Hiab unit's 22,000 lb rating shows where this truck fits in real lifting work. Common uses include loading and unloading heavy building materials, moving heavy machinery around construction sites, and supporting utility work such as positioning transformers. The crane setup typically uses hydraulic outriggers for stability and provides 360-degree rotation for flexible positioning, and knuckle booms can also work on uneven terrain with only slight leveling. That versatility can reduce the need for separate forklifts on the same job. Buyers should also note that the articulated design requires more operator skill for safe positioning and more frequent maintenance from hydraulic complexity, while giving the truck a clear advantage when accessing confined spaces and moving loads over obstacles; the crane weight can also put added stress on the chassis axles.

Super-Low Miles, Auto Trans, Hand Held Olsberg Controller 6F MD2 Display, Equipped w/Battery Charger, No A/C

Excellent Running, Mack Dependable - R Model Strong, Current Owner Has Owned This Truck for 25 years

Zero Down - Easy Fast Apply!

Sold AS IS/WHERE IS with no warranty; public inspection is open before bidding, and any inspection report provides basic item condition details only. Buyers should review all terms of sale, confirm title and property details, and note that at auction or direct sale full payment is typically required within stated hours before equipment is removed.

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