Caterpillar WHEEL DOZER 844H - catalog of spare parts

ENGINE

The Cat® C27 engine with ACERT® technology complies with US EPA Tier 3 and EU Stage III standards. It features increased power and efficient fuel management for quick response, high performance and exceptional service life. The sculptural cylinder block provides greater strength and less weight.

CONTROLLER OF THE MOMENTAL MOMENT IMPELLER (ICTC) LEFT PEDAL CONTROL

ICTC allows the operator to adjust the traction force on the wheels and slow down the machine without reducing the engine speed. This allows the machine to maintain full hydraulic power to control the blades and steering, which gives the 844H a sense of hydrostaticity, while retaining the advantages of the world`s most efficient and powerful transmission and power shift transmission with a locking system. The torque converter lock-up clutch provides direct drive efficiency in second and third front gears and in all three gears in reverse with higher speeds and improved fuel economy when dosing over long distances.

AUTOMATIC POSITION OF BLADE

This patented system simulates manual operations, automatically lowering the blade when moving the machine forward and lifting it backwards. Settings in which the blade is raised / lowered can be easily adjusted from the operator`s seat.

SPEED AND VERSATILITY

The speed and mobility of the wheel bulldozer 844H provides the versatility necessary to perform various work on the working platform:

Road maintenance

Dump Truck Dozer

Cleaning the loading area

Imploding works

amelioration

accumulation

Engine idle stop

This new feature will automatically shut off the engine after the machine has been in a safe idle mode for a long time. The operator in the cab will be heard and visually warned before the shutdown occurs.

TORQUE CONVERTER MOMENTS

The torque converter lock-up clutch provides direct drive efficiency in second and third front gears and in all three gears in reverse with higher speeds and improved fuel economy when dosing over long distances.

CONSTRUCTIONS

Combining the use of robotic welding and castings in critical areas with high voltage, more than 90 percent of the machine’s design is subjected to robotic welding, which provides highly consistent welds and increased strength. Castings are also used in several areas to increase strength, helping to distribute the load and reduce the number of parts.

PLANETARY CAT, POWER TRANSMISSION

Electronic switching ensures smooth, consistent switching. Large diameter couplings in combination with four planetary gears provide additional durability and long service life.

HEAVY DUTY AXES

To improve performance, ease of operation and durability, additional oil coolers for axles, universal joints with permanent lubricants and more robust axle components are offered in both differential and main gears.

FINAL DRIVES

Latest gears have a planetary reduction on each wheel. Torque develops on the wheel, which provides a smaller load on the axle shaft. • Patented gear cutting and heat-treated methods are used in production to provide best-in-class reliability and durability.

BRIDGE, SHAFT, OIL BRAKES

These brakes are unregulated, fully hydraulic and fully airtight. The grooves on the ends of the disc provide cooling even when using brakes to increase component life.

The location of the brakes allows for improved serviceability. The design of the axle shaft brakes ensures that the brakes work, leaving the main gear intact.

Shaft axle brakes require less effort when operating on the low torque side of the axle. In combination with improved oil circulation in the axles to increase cooling, the oil housing with several disc brakes increases durability.

THE BEST IN THE WORKING ENVIRONMENT

A comfortable operator is a productive operator, therefore Caterpillar has developed the Model 844H with the best-in-class working environment for wheel loaders of this class.

The world class cab includes features that provide operator comfort and ergonomics, visibility and ease of use.

The ergonomic controls are fully adjustable and designed for effortless comfort. Switches and controls for various systems are located within operator reach.

Internal noise levels are reduced to a quiet 72 dB (A).

The Cat Monitoring System (EMS-III) provides information on the main components of the machine. This includes fuel level indicators in the tank; engine coolant temperature, torque converter and hydraulic oil temperature sensors; Digital tachometer analogue tachometer sensor for gear selection and travel speed and monitoring system.

Additional features are available to improve visibility. These options include a rear-view camera for precise movement tracking behind the wheel loader and high-intensity discharge (HID) light for better visibility at night.

A standard trainer seat allows you to safely train your operator.

PERFORMANCE

The 844H is designed to provide minimal downtime due to ground level or platform access, grouped service points, and careful attention to key machine maintenance areas.

Continually maintain three points of contact across service areas at ground level or platform.

Visual ground level indicators on all major systems.

Turning the engine off at ground level, the battery switch, and the steering lock lever allow maintenance technicians to perform maintenance while the machine is stationary.

Extended service intervals for fluids and filters.

Hinged doors on both sides of the engine compartment provide easy access to the engine oil level gauge and to the spout of the filling port, to the S · O · SSM ports, fuel filters, air conditioner compressor, engine oil filters, alternator, start socket, maintenance indicator air filter, cooler and air starter.

Maintenance free batteries.

Ecology drains for ease of maintenance and to prevent spills of potential environmental pollutants. Ecological drains are standard for hydraulic systems, engines, transmissions and cooling systems.

ENVIRONMENTAL PROTECTION

With the 844H, which has a long legacy, it is only suitable for this machine, which has functions and services that show environmental responsibility.

Maintenance-free, easy maintenance or advanced maintenance, attention was paid to reducing the cost of routine maintenance while eliminating waste into the environment.

Cat 844H is made for multiple lives. To help extend the life of the machine, Caterpillar offers a range of sustainable options, such as our Reman and Certified Rebuild programs. In these programs, reusable or remanufactured components can provide cost savings of 40–70 percent, which reduces operating costs and benefits the environment.

Caterpillar offers retrofit packages that allow you to use new features on older machines and maximize your resources. And when you complete the Cat Certified Rebuild program, these upgrade kits are part of the recovery process.

SECURITY

At Caterpillar, we designed the 844H based on your most important strength — people. Based on the history of technological advances and practical wisdom, you can be sure that your people are protected while working on or near the 844H wheel dozer.

TRANSPARENCY

The 844H offers a range of standard and optional features to increase the visibility of your workplace. Features include:

Articulated wiper / washer system with intermittent functions

Additional high intensity lamps (HID)

Additional warning beacons

Additional rear view camera

Access and return

Turning the machine on and off is one of the main causes of workplace injuries. The 844H has a number of features that ensure the safe on and off of your operator.

Primary and secondary staircase exits

Stamped tread plates with stamping

Night Level Lights at Ground Level

Perimeter railings and finger strokes on the upper platform

Side emergency exit platform

Additional road wings

SERVICE SAFETY

With the 844H, design efforts have been made to group service points with convenient access. As can be seen from the serviceability section, all service points are at ground level or platform access to support three points of contact, and there are several disconnectors providing 844H static stability during maintenance.

OPERATOR`S HEALTH AND WELFARE

The 844H offers many features that enhance operator comfort and help ensure operator safety.

Ergonomic cab controls designed for easy adjustment, minimal effort and minimal movement

Cabin Air Filtration System

Laminated cabin glass to minimize noise levels

Optional secondary steering

PRODUCT LINK

Cat® Product Link provides convenient remote monitoring of equipment. Get useful information to keep your work schedule, maintain machine availability, and reduce the cost of owning and operating a fleet.

Simplify fleet management and control machine usage

Link all cars, regardless of brand

Three levels of understanding to meet specific business requirements

CAT TERRANE

The terrain for classification ensures accurate execution of the project plan and provides safe working methods. It can be used on different machines in a wide variety of fields: from dosing to disposal, which helps you develop more safely and efficiently. Using the technology of the Global Navigation Satellite System (GNSS), installed on the machine components, radio network and office software; This improves efficiency in mines around the world. Planning terrain is an ideal tool for mine planning, design, surveying and quality control, production monitoring and other applications, including the construction and maintenance of roads and stands; production dosing; design and maintenance of the leach pad; reclamation and discharge terminals.

COMMITMENT TO ACCEPT YOU

Cat 24/7 dealer support offers solutions, services, and products that help reduce costs, increase productivity, and manage your fleet anywhere in the world. Experienced professionals have the knowledge, experience, training, spare parts and tools to keep your 844H when you need it most.

PRODUCT SUPPORT

Caterpillar supports 844H with a worldwide distribution network of parts, dealer service centers and technical educational institutions. Our global dealer network is ready to meet your support needs around the clock and around the world.

SUPPORT

Cat dealers offer a wide range of service plans to maximize uptime and return on your investment, including:

Prevention Service Programs

Diagnostic services such as routine oil sampling and technical analysis

Rebuild and repair product options

Customer Support Agreements

FEATURE OF APPLICATION

Application and site-specific factors, such as material density, dosing methods, speed, grade, blade selection and maintenance, affect the cost of operating and maintaining your fleet. Your Cat dealer can help you understand the impact of application factors and operating methods on maintenance and operating costs. They also offer training to help operators improve productivity, reduce downtime, reduce operating costs and increase safety.

Cat blades

Designed with excellent dosing and rolling characteristics.

Capacity and width set to increase performance

Special design allows you to distribute the coating material, as well as dispense heavier loads.

High strength extruded rib design

Bolted-on cutting edges and lower wear plates common to large Cat tracked tractors

Equipped with standard Cat hardware and ground communication tools (GET)

Reconstruction for a long blade life

COAL

Designed for accurate and productive dosing, helping to maintain load control with increased capacity for lighter materials. The corners of the wings help keep the load during sleep.

SEMI-U BLADE

Combines the characteristics of the blades S and U in one package. Provides increased performance by adding short wings, which include only the end tips of the bulldozer without compromising the expansion characteristics of the straight blades.

HEAVY BLADE SEAMI-U

 

It has the same configuration as the Semi-U blade, but has thicker plates for heavier applications.

 

ENGINE

WEIGHTS

TRANSMISSION

HYDRAULIC SYSTEM

STEERING

SERVICE REFILL CAPACITIES

CAB

BRAKES

AXLES

OPERATING SPECIFICATIONS

BLADES

SOUND PERFORMANCE LEVELS