825H^Non-Current

Cat C15 Engine with ACERT® Technology

The Cat C15 engine is an increased displacement version of the proven Cat 3406 engine. The C15 is U.S. EPA Tier 3/EU Stage III compliant and features a 3.5 percent horsepower increase over the previous 3406. The four stroke engine delivers fuel economy, durability and reliability in the most demanding conditions. High torque rise delivers performance you can feel with greater rimpull, lift force and faster cycle times. Resilient engine mounts dampen vibration for lower sound levels.

Engine Lubrication

Engine lubricating oil is filtered, cooled and supplied by a gear-type pump.

Mechanical Electronic Unit Injector (MEUI™)

MEUI is a high-pressure, direct injection fuel system that is virtually adjustment-free. It electronically monitors operator and sensor inputs to optimize engine performance.

Air-to-Air Aftercooler (ATAAC) System

The ATAAC system provides a separate cooling for the intake manifold air. It routes hot, compressed air from the turbo and cools it with a single pass, air-to-air aluminum heat exchanger. The cooled, compressed air greatly reduced the emissions produces, meeting U.S. EPA Tier 3/EU Stage III requirements.
• Airflow matched turbocharger with power rating helps reduce emissions.
• 19 percent more bearing area allows the engine to operate at the maximum cylinder pressure.
• Higher cylinder pressure capability helps reduce fuel consumption and improves high altitude operation and provides reduced emissions.
Cylinder heat exhaust port sleeves reduce heat rejection which results in less heat transfer into the water jacket system and provides high torque rise.

Next Generation Modular Radiator (NGMR)

The parallel flow system with six cores standard (seven on the high ambient machine) improves cooling capabilities. Serviceability is also enhanced as there is no top tank to remove. The NGMR uses copper brazed brass tubes and copper fins.

ADEM™ IV (Advanced Diesel Engine Management) System

ADEM IV uses a 32-bit computer with sensors throughout the engine to regulate fuel delivery, valve timing and all other engine systems that require input to manage load and performance. ADEM IV also offers automatic altitude compensation, a cold mode start-up strategy, oil pressure and coolant warnings which result in precise engine speed control, superior cold start capability, low smoke and emissions in all operating conditions.

Transmission

The extreme duty, planetary, powershift Cat transmission features heavy-duty components to handle the toughest jobs. The four planet drives operate in all gears forward and reverse. Electronic controls provide features to enhance productivity, durability and serviceability. The additions of the Electronic Clutch Pressure Control (ECPC) contributes to improved shift quality, reduced torque spikes and overall transmission durabillity. Control Throttle Shift (CTS) offers smoother shifts and improves clutch and power train life.

Torque Converter

The torque converter uses a high-capacity impeller to handle the the engine's increased torque rise (24 percent) and power.

Heavy-Duty Axles

The fixed front and oscillating (±9 degrees) rear heavy-duty axles feature strong gears and bearings in both the differentials and heavy-duty final drives for increased durability. Permanently lubricated, maintenance-free U-joints result in fewer parts and improved serviceability. Free floating axles shafts can be removed independently from the wheels and planetary drives.

Spindles and Final Drives

Planetary units can be removed independently from the wheels and brakes. The final drives feature planetary reduction at each wheel, and with torque developed at the wheel, less stress is placed on the axle shafts.

Differentials

Conventional front and optional No-SPIN rear differentials deliver maximum traction in low traction or inconsistent ground conditions.

Service Brakes

Completely enclosed and located on the two front wheels, the service brakes are self-adjusting with modulated engagement and are designed for easy servicing. With two brake pedals, the right pedal controls standard braking while engine deceleration and braking occurs with the left pedal.

Parking Brake

The spring-applied, oil-released, dry drum design parking brake is mounted on the transmission output shaft driveline for manual operation. The Caterpillar Monitoring System alerts the operator if the transmission is engaged while the parking brake is applied.

Secondary Brake

The secondary brake can be applied manually by the operator. In addition, the Caterpillar Monitoring System alerts the operator if pressure drops and will automatically apply the parking brake.

Cold Start

This feature is improved by not only ADEM IV but also a new larger starter and four higher CCA batteries (1,000 CCA).

Hydraulic System

The hydraulic system provides low-effort blade control. Seat mounted levers send electrical signals to a pilot valve mounted on the front frame, moving the sound, heat and effort caused by the hydraulic valve out of the operator's station.

Command Control Steering

A mechanical feedback system combines with valve ratio to provide quarter-turn, side-to-side steering. Unlike systems that rely on steering wheel velocity to activate steering cylinders, Command Control steering directly links the steering wheel position to articulation. The speed the machine turns is proportional to the steering wheel position. The benefit is precise control, quicker response and dramatically reduced operator motion and effort.

Load Sensing Steering

With load sensing steering, machine performance is maximized because power is directed to the steering system only when the operator steers the machine. This allows more power to be applied to the ground when the machine is not being steered. It also helps decrease fuel consumption since the steering system does not constantly draw on the engine.

Positive Displacement Hydraulic Pumps

All hydraulic pumps are mounted on a single pump drive for improved serviceability.

XT-3™ and XT-6™ Hose

Reliable XT-3 ES and XT-6 ES hoses, along with o-ring face seals and a large capacity life cylinder complete the hydraulic system. Reliable components reduce the risk of leaks and blown lines, helping protect the environment and reducing operating costs.

Structure Construction

Combines the use of robotic welding on up to 90 percent of the 825H, while castings are used in several areas to increase strength by helping to spread the loads and reduce the number of parts. This provides highly consistent welds with deep plate penetration and excellent plate fusion. The benefits are increased durability and fatigue strength. The computer controlled machining ensures the alignment of pin bore, axle pad, cab mount and transmission/engine components.

Box Section Engine End Frame

Designed to resist twisting and torsional forces, the box section engine end frame provides a solid foundation for the axles, engine and transmission.

Front Frame

The two-plate front frame provides maximum structural strength during compaction and dozing applications.

Spread Hitch Design

The spread hitch design improves load distribution by reducing loads to the hitch bearings. The large center hitch design improves hydraulic line routing and makes service access easier.

Upper and Lower Hitch Pins

The hitch pins pivot on double-tapered roller bearings. Box-style sections in the hitch pins and crossmember assembly improve frame structure strength. Increased diameter lower hitch pins add to the robust design.

Engine and Transmission Mounts

A rubber isolation mount design reduces noise and vibration.

Chevron Tamping Tip Design

The modified chevron tamping wheel tip design provides greater ground pressure, more compaction, excellent traction and a smooth ride.

Wheel Tips

There are 13 tips per row and 65 tips per wheel for excellent compaction.

Compaction

Compaction is achieved from the bottom of the lift to the top. The tapered tips walk out of the lift without "fluffing" the soil. The top of the lift is compacted and the surface is relatively smooth and sealed so hauling units are able to maintain a high speed when traveling over the fill. The 825H travel speed allows four forces of compaction: pressure, manipulation, impact and vibration. Since the 825H can also spread fill, the number of spreader tractors may be able to be reduced.

High Density Wheels

Designed with longer and narrower tips, high density wheels provide higher ground contact pressure and provide the ability to achieve more difficult density requirements. They are capable of liquid ballast for additional compactive benefit and self-seating valves can relieve pressure from the ballast. High density tips meet stringent compaction specification requirements. Tip height is 215 mm (8.5 in) and tip width is 168 mm (6.6 in).

Standard Tips

Standard tips are used in typical soil compaction applications where compaction specification requirements are 95-100 percent Standard Proctor. Tip height is 188.3 mm (7.4 in) and tip width is 224 mm (8.8 in).

Symmetrical Tamping Tip Pattern

Equal compaction is forward or reverse is the result of the symmetrical tamping tip pattern. Tips are full perimeter and replaceable. The tip is welded to a base assembly, which then is welded directly to the drum.

Cleaner Bars

Each wheel has two cleaner bars to keep the drums free of carryover dirt, regardless of rolling direction so efficiency is maximized.

Adjustable Cleaner Bar Tip

The adjustable cleaner bar tips are heat-treated and direct hardened, cutting edge steel to increase wear life, which translates into lower operating costs.

Straight Blade

The straight blade is standard on the 825H.

Outside Mounted S-Blade

The S-Blade features multiple box-section construction, including heat treated moldboard and DH-2 steel cutting edges and engine bits for long life. The outside mounting is a stronger design because stresses are put on the frame rather than the blade so blade flexing is reduced. It also allows for higher lift and a wider blade can be used than with an inside mounted design.

Operator Controls

Lift, tilt and tip are standard. The controls are conveniently located to the right of the operator.

Applications

The 825H excels at compacting, boosting scrapers, backfilling and spreading fill.

Right and Left Rear-Hinged Doors

A walk-through operator's station comes from right and left doors that can be fully opened and latched for easy entry and exit.

Sound Levels

A thick, non-metallic floor, along with outside the cab hydraulics and a separated cooling system contribute to a quiet work environment.

Viewing Area

The internal ROPS and bonded front glass eliminate the distracting metal frames to help increase the viewing area. The angled hood and larger windows allow the operator to see objects closer to the machine.

Cat Comfort Series Seat

The six-way adjustable seat provides comfort by reducing the pressure on the lower back and thighs while offering unrestricted arm and leg movement. Air suspension adds to the overall comfort level by smoothing the ride over rough terrain.

Blade Control and Joystick

The pod is situated at an 18 degree angle for natural wrist positioning. The controller offers a sturdy handle for multiple hand positions. The actuation button for the blade tip function is located on the joystick, providing total blade control.

Storage Space

The cab features room for a lunch cooler, insulated bottle, cup and other personal items. A coathook is also provided.

Radio Ready

A 12-volt, 15-amp converter, speakers, antenna, all wiring and brackets for a communications or entertainment radio is provided.

Caterpillar Monitoring System

Gauges on the left side of the dash monitor fuel level, engine coolant, hydraulic oil and torque converter oil temperatures. The center panel contains the tachometer/speedometer. On the right side panel, a three-level warning system provides full-time monitoring of key functions. The system alerts the operator of immediate or impending problems with air inlet temperature, brake oil pressure, electrical system low voltage, engine oil pressure, engine overspeed, fuel filter status, parking brake status, steering oil pressure and transmission filter status.

12-Volt Power Supply

Radios, phones and laptop computers can be powered from the cab with the 12-volt, 15-amp power supply provided. A laptop computer can run Cat Electronic Technician (ET) software to access the enhanced engine, transmission and blade control system diagnostics.

Service Brakes

Standard braking is offered with the right pedal. The brakes are completely enclosed and located on the two front wheels with stopping capability provided to all four wheels through full-time, all-wheel driveline. The brakes are self-adjusting with modulated engagement.

Decelerator Pedal

Engine deceleration for the first 50 percent of travel is followed by the brakes engaging. This left pedal enables the operator to slow down when the throttle lock is engaged and return to throttle lock without pressing a button.

Throttle Lock

Similar to cruise control in an automobile, throttle lock allows the operator to preset the engine speed for operator and machine efficiency.

Air Conditioning

Blended air provides immediate temperature changes, clears windows with ease and improves operator comfort. The system is located behind the operator's seat and uses R134a refrigerant.

Ventilation Ducts and Vents

More airflow is directed to the operator and windows, while post-mounted vents direct air to the rear windows.

Caterpillar Monitoring System

Diagnostics are provided that allow technicians to review a machine's operation and quickly troubleshoot problems. Operating parameters, diagnostic codes and out-of-range gauge readings are displayed through the diagnostic connector. There are also pressure taps for easy hydraulic system checks.

Service Access

Scheduled maintenance points are well within reach. A remote grease fitting is provided to lubricate the lift cylinder yoke. Removable tread plates in the platform give access to less commonly serviced components.

Daily Maintenance

Lockable ground level service doors give quick access to engine oil fill and dipstick, coolant sight gauge, rear frame grease fittings, relay panel and electrical breakers. All four maintenance-free batteries are secure in a built-in battery box located in the right rear frame. U-joints are lifetime lubricated, leaving the slip joint as the only driveline component needing grease.

Filter Access

The left platform offers access to the primary filter, while the engine oil filter is accessed from the right platform.

Air Filter Restriction Sight Gauge

This can be viewed from the cab or platform.

Transmission Oil Fill Tube

The tube is located beneath the platform area and the transmission oil dipstick sight gauge is located next to the fill tube for easy maintenance.

500 Hour Oil Change Interval

Uptime and production are increased by doubling the time between oil and filter changes without requiring increased oil sump capacity.

Separated Cooling System

The fan and radiator are isolated away from the engine for a quieter running machine. NGMR reduces radiator repair time. The new metal engine enclosure is completely redesigned for greater durability and to provide easy access for daily maintenance and inspection.

Hinged Hydraulic Oil Cooler

This can be swung open 30 degrees without special tools.

Hinged Air Conditioning Condenser

This swings open 30 degrees and coupled with the swing-out oil cooler, allows the cooling system to be cleaned quickly and easily.

Operator Station

In about 45 minutes, the operator station can be removed or replaced without having to disconnect hydraulic lines. Quick disconnect couplings allow fast disconnect of the air conditioning unit without releasing refrigerant.

Engine Shutdown Switch

This switch is located inside the left radiator screen door for simple access and extended switch life.

Bolt-on Bumper

The angle of departure is improved from 18 degrees to 20 degrees by shortening the overall machine length.

Battery Box

Maintenance-free batteries are located in the battery box located in the right side bumper for convenient access.

Tool Box

The tool box is located in the left side bumper to provide additional protection against harsh work environments.

Remote Transmission Pressure Taps

New to the 825H, transmission (ECPC) pressure taps are located behind the cab, under the platform for easy access.

Optional Sliding Cab Window

Located in the right and left doors are optionals sliding windows to provide access to outside air without opening the door.

Floodlights and Auxiliary Light Package

Located on the 825H exterior, floodlights are super damp and will last up to seven times longer than previous lights. An auxiliary light package with the cab (two facing forward and two facing rearward) is available.

Fast Fuel Fill

The fast fuel fill is used during peak periods when high production is needed and little downtime can be afforded for fueling. Fuel is pumped into the tank through a filling nozzle at a rate of 378 L (100 gal) per minute. As fuel enters the tank, air is forced out through an open vent. When the tank is full, the vent closes and the filling nozzle automatically shuts off.

Sound Suppression

Sound suppression panels available for the engine compartment help reduce noise.

Machine Selection

Make detailed comparisons of the machines under consideration before purchasing. Cat dealers can estimate component life, preventive maintenance cost and the true cost of lost production.

Purchase

Look past initial price. Consider the financing options available as well as day-to-day operating costs. Look at dealer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over the long run.

Customer Support Agreements

Cat dealers offer a variety of product support agreements and work with their customers to develop a plan that best meets specific needs. These plans can cover the entire machine, including attachments, to help protect the customer's investment.

Product Support

You will find nearly all parts at our dealer parts counter. Cat dealers use a worldwide computer network to find in-stock parts to minimize downtime. Save money with genuine Reman parts. You receive the same warranty and reliability as new products at cost savings of 40 to 70 percent.

Operation

Improving operating techniques can boost your profits. Your Cat dealer has training video tapes, literature, application and equipment training courses and other ideas to help you increase productivity.

Maintenance Services

More equipment buyers are planning for effective maintenance before buying equipment. Choose from your Cat dealer's wide range of maintenance services at the time you purchase your machine. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S·O·SSM and Coolant Sampling and Technical Analysis help you avoid unscheduled repairs.

Replacement

Repair, rebuild or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.