Articulated Truck is suitable for use in tough terrain.
Press Release Summary:
Model 735 offers electronically controlled engine and purpose-built, 8F/1R, electronic autoshift transmission. Other features include oscillating A-frame front suspension system, cooling system mounted to rear of cab, integrated operator station, and center-mounted cab. It has cross-axle differential lock and inter-axle differential lock systems. Rated at 35 tons (payload), truck produces 365 hp (net power) from its Cat® 3406E diesel engine.
Original Press Release:
Caterpillar Introduces the 735 Articulated Truck, Designed for Maximum Performance in Tough Terrain
The new Caterpillar® 735 Articulated Truck features a new electronically controlled engine and purpose-built transmission, a new front suspension system, a new hitch design, a cooling system mounted to the rear of the cab and integrated with new styling, a new operator station and center-mounted cab. The 735 replaces the previous model, the D350E II, and offers improved productivity and fuel efficiency, smoother ride, enhanced comfort and superior visibility. The new model retains the cross-axle differential lock and inter-axle differential lock systems proven in the previous model.
The 735 is rated at 35 tons (31.7 metric tons) payload and produces net power of 365 hp (272 kW) from the Cat® 3406E diesel engine. The 735 is designed to deliver a superior horsepower-to-weight ratio as well as excellent flotation and traction to haul efficiently in difficult terrain.
Such attributes enable the 735 to excel in applications in general construction, road building, sand and gravel hauling, land restoration and mine reclamation, and landfill operations.
Electronically controlled engine and transmission
The electronically controlled engine and transmission offer complete system integration for maximum efficiency. The Cat 3406E air-to-air aftercooled turbocharged engine with electronic unit injection powers the 735. High torque rise of 53 percent delivers superior acceleration and lugging force on steep grades and in tough underfoot conditions. The engine has excellent fuel efficiency primarily due to electronically controlled unit injection fuel system, turbocharging and air-to-air aftercooling. The electronic control module, ADEM(TM) III (Advanced Diesel Engine Management III), improves performance, reduces exhaust emissions and aids diagnostics. The engine meets Tier 2/Stage II emissions regulations.
The eight-speed electronically controlled transmission is designed specifically for the articulated truck. The automatic transmission features Electronic Clutch Pressure Control with Controlled Throttle Shifting to manage shift torque and provide exceptional shift smoothness. The system reduces powertrain stress and clutch wear by coordinating engine speed, torque converter lock-up and transmission clutch engagements. Eight gears allow operators to precisely match operating speeds to job conditions for high productivity.
The standard engine compression brake provides additional braking force on downhill grades and reduces the need to apply the service brakes. Four modes of operation allow matching retarding power to the operating conditions.
The 735 incorporates the new radiator design that characterizes the Cat 700-Series trucks. The radiator is mounted behind the cab to improve the forward viewing area dramatically, protect the radiator from front impact and offer service access from both sides. The radiator is mounted at an angle to prevent heat transfer to the cab. A variable speed hydraulically driven fan improves efficiency and reduces sound levels.
New front suspension system for smoother ride
The new front suspension allows the axle to oscillate six degrees to provide a smoother ride and faster travel speeds over rough terrain. The front suspension uses an oscillating A-frame. The tie rod limits lateral movement of the A-frame. Independent, low-pressure oil-nitrogen suspension cylinders contribute to a smooth ride. Low pressure ensures consistent damping and increased seal life. The suspension mounting points are integrated into the axle housing for reliability and durability.
The new suspension system eliminates the need for lowering the suspension to transport the truck. The result is less downtime for moves from one site to another. The rear suspension features a mechanical walking beam design that extends component life and provides a stable ride for excellent load retention.
The traction control system uses a wet-clutch inter-axle differential and cross-axle differentials with wet clutches. All differentials can be engaged and disengaged on the go for fast cycle times. Inter-axle differential lock splits torque between the tractor and the trailer, and cross-axle differential lock provides full driveline locking for pulling through the worst conditions.
Oil-immersed, oil-cooled brakes are fitted to the front axles and the center axles. The fully enclosed brakes offer superior stopping capability and extended durability.
New front frame and hitch ensure durability
The front frame uses large box-section frame beams to handle torque loads. Castings handle areas with stress concentrations. The divergent frame design decreases stress in the hitch area and optimizes suspension geometry.
The articulating, oscillating hitch is a new two-piece construction. A durable, cast steel head is bolted to a forged steel tube. Large, hardened bearing areas and a hardened thrust face extend wear life.
New cab and operator's station for high productivity
The new center-mounted cab combines with the new front suspension for a comfortable ride in all operating conditions. A smoother ride promotes higher productivity and reduces fatigue for consistent production during the entire work shift.
The center-mounted cab, curved windshield, increased glass area and low sloping hood give the operator of the new Cat truck the best all-round viewing of any articulated truck. The spacious cab is resiliently mounted and makes extensive use of sound-absorbing barrier materials to keep noise low.
The new Cat Comfort air suspension seat enhances operator comfort with a dual-sided support recliner and thicker cushions. It is fully adjustable to provide an optimal driving position. The cab also includes a full-size trainer seat. The steering column telescopes and tilts to accommodate the operator, and suspended pedals create more leg and foot room and are easier to reach.
The wrap-around, curved dashpanel exemplifies the ergonomic layout. Instruments are easy to read and controls are easy to reach. The switch for the inter-axle differential lock now is positioned next to the operator's footrest for ease of operation. The Electronic Monitoring System (EMS III) constantly monitors critical machine functions and alerts the operator to potential problems. Flash memory in EMS III allows the software to be updated easily.
Reduced maintenance, quicker service
The 735 has extended engine oil change and hydraulic oil change intervals, extended life coolant, and no wheel-bearing adjustments required. Lubrication points are grouped together as are service points under the hood. The hood is raised and lowered electrically for easy access, and a manual override is provided. Test points are behind the cab and accessible from the ground.
For additional information, customers should contact their local Cat dealer or visit the Cat website at www.cat.com.
Basic Specifications for 735 Articulated Truck
Engine Cat 3406E
Net power 365 hp (272 kW)
Transmission 8F/1R, electronic autoshift
Rated payload 35 tons (31.7 metric tons)
Body capacity 24.8 cu yd (19 cu m)
(heaped, SAE 2: 1)
Operating weight (empty) 65,609 lb (29 760 kg)
Top travel speed 34.7 mph (55.8 km/h)
