The 633E Series II Elevating Scraper is a versatile, fast machine with a two-speed elevator drive and high hydraulic horsepower for maximum hauling and loading performance.
Proven components combine to deliver the most durable, reliable power train in the industry, keeping costs low and production high.
Proven Cat engines provide the power and torque rise for excellent lugging in tough loading conditions.
The fuel system and Electronic Control Module on the 3408E tractor engine economically and precisely deliver fuel.
High injection pressures, independent of engine speed, decrease smoke and emissions while improving response.
Variable Injection Timing
Variable injection timing and duration improve fuel efficiency and cold starting, decrease smoke and emissions.
Injection Rate Shaping
Injection rate shaping reduces emission and engine noise.
Fewer mechanical parts in the fuel system improves reliability.
Electronic control provides automatic altitude deration and automatic air filter restriction deration.
Multiple Horsepower Ratings
Multiple horsepower ratings limit output in first and second gears unless the operator has the auger or elevator engaged.
Neutral Start Control
Neutral start control prevents engine from starting unless transmission is in neutral.
Throttle back-up provides the operator with a preset engine speed control in the event of a throttle input failure.
Directional Shift Management
Directional shift management prevents the operator from shifting out of neutral when engine rpm is above a preset level.
Controlled Throttle Shifting
Controlled throttle shifting increases drivetrain life by reducing the fuel injection rate just prior to shifting.
Automatic Ether Starting Aid
Automatic ether starting aid greatly improves cold weather starting.
Electronic Ground Level Shutoff
Electronic ground level shutoff enables the operator to stop the engine from the ground with the flip of a switch.
Steel Spacer Plate
Steel spacer plate between the block and head eliminates the need for counterbores and helps prevent associated cracking problems.
Oil-cooled pistons and full-length water-cooled cylinder liners provide maximum heat transfer for longer component life.
The aftercooler lowers intake charge air temperature to increase power and reduce thermal stresses that can cause premature wear of pistons, rings, and liners.
Engine Oil Cooler
Engine oil cooler maintains optimum oil temperature for proper cooling and longer lubricant life.
Laminated thermal-shield improves tractor protection by reducing the temperature of exposed engine surfaces, cools engine and operating compartments, extends hose and wiring life.
The optional retarder can extend brake life.
Eight-speed power shift transmission provides automatic, on-the-go shifting for simple, reliable operation.
Neutral Coast Inhibitor Control
Neutral coast inhibitor control helps prevent the transmission from shifting to neutral at speeds above 8.1 km/h (5 mph).
Top Gear Control
Top gear control helps prevent shifting above a programmed gear to better regulate haul road speeds.
Electronic Programmable Transmission Control (EPTC II)
Electronic Programmable Transmission Control (EPTC II) records both current and intermittent faults.
Electronically Controlled Cushion Hitch
Smoother ride improves productivity.
The Caterpillar electronically controlled cushion hitch design dampens shocks to provide a smoother ride.
Nitrogen-over-oil accumulators absorb and dampen road shocks.
Cushion Hitch Lock
Electronically controlled cushion hitch locks down for positive control of the cutting edge during loading and dumping.
Double Kingbolt Design
Double kingbolt design withstands high external forces and allows easy installation and removal.
Extensive use of steel castings eliminates many welded joints, making a strong hitch.
Low, wide, large-capacity design boosts production.
Wide cutting edge scoops large volume loads from shallow cuts, while the low-profile design of the bowl offers less resistance to incoming materials.
Cellular construction adds strength and dent resistance to bowl sides and floor.
Steel router and edge supports, floor plates and high-abuse components are tempered for strength.
Bulldozer Ejection system
Cat bulldozer ejection system combines constant spreading control with bowl-cleaning efficiency.
Two-Stage Ejection System
The 633E II is equipped with the two-stage ejection system. The floor slides back as the ejector moves forward. Actuated by smooth, double-acting hydraulics.
Angled Top Plate
Angled top plate on ejector helps retain load.
The infinitely variable-speed elevator matches loading speed to material - from high speed for normal or loose conditions to low speed for tough materials.
Comfort and control increase operator efficiency.
Standard rubber-mounted cab reduces noise and vibration for comfortable, shift-long operation.
Low-effort controls are easily accessible for sure, precise operation.
Hydraulic servo-steering system provides low-effort automotive feel and excellent maneuverability.
Tilt steering column adjusts to five different positions for operator comfort and control.
A suspension seat delivers a comfortable ride.
Electronic Monitoring System
The Electronic Monitoring System checks important machine systems and provides a three-level warning.
The operator's station includes radio compatible wires in the cab.
Multifunction Bowl Lever
Multifunction bowl lever gives operators the ability to control important scraper functions without removing their hands from the bowl lever.
Engine Overspeed Indicator Light
Engine overspeed indicator light and alarm sound when the engine rpm exceeds 2700.
Simplified service means more productive uptime.
Scraper-mounted fuel tank improves access to tractor engine compartment.
Improved wiring harness incorporates color coded and numbered circuits for quick identification, minimum 10-amp fuses and improved connectors.
Diagnostic connector, with the aid of a service tool, allows quick analysis of the starting and charging circuits.
O-Ring Face Seals
O-ring face seals help keep these machines 'dry'.
Centralized Lubrication Blocks
Centralized lubrication blocks for the hitch and steering reduce lube time.
Service points for the engine are grouped on the right side for easy access.
Service platforms and numerous handholds improve access and safety.
Increased component commonality with other Caterpillar scrapers/machines improves parts availability.
Electronic ground-level engine shut-offs for convenient operator and services areas.
Cat is committed to provide the most dependable machines on the market.
The optional retarder extends brake life when working on severe, downhill slopes.
Extensive use of castings in the frame, hitch and bowl provide long service life.
Wiring Harness and Hose Assemblies
Wiring harness and hose assemblies run down the draft arms to eliminate the need for "jump-over" line which can reduce hydraulic system efficiency.
Standard tires provide the maximum flotation of the available options.
Scraper Driveline Guard
Scraper driveline guard protects the output case, differential and ejector cylinder to help minimize driveline maintenance costs.
Laminated Thermo-Shield helps keep surface temperatures in the engine compartment below the flash point of diesel fuel.
Complete Customer Support
When you buy a Cat machine, you get Caterpillar's total commitment to customer support.
Your Caterpillar Dealer offers a wide range of services that can be set up under a customer support agreement when you purchase your equipment.
Make detailed comparisons of the machines you are considering before you buy.
Improving operating techniques can boost your profits. Your Cat dealer has training videotapes, literature and other ideas to help you increase productivity.
More and more equipment buyers are planning for effective maintenance before buying equipment.
Repair, rebuild or replace? Your Cat dealer can help you evaluate the costs involved so you can make the right choice.
You will find nearly all parts at our dealer parts counter.