Caterpillar WORK TOOL 844K - catalog of spare parts

 

RELIABLE STRUCTURES

Your bottom line is enhanced by very durable structures that achieve multiple life cycles and withstand the toughest loading conditions.

Rear frame full box section resists torsional shocks and twisting.

Castings in the end frame of the engine are used in high voltage areas to distribute high loads.

Attachment areas for cast axles distribute the load better to improve the integrity of the structure.

90 percent of the machine design is robotic welding to ensure high consistency of welds and increased strength.

FRAMES

Your key to maximum uptime and productivity is our front and rear frame.

Full box frames absorb twisting forces during dosing, maintaining alignment for hitch pins and drive lines.

The design of the coupling device has double tapered roller bearings and hardened pins that withstand both horizontal and vertical loads.

Increase strength at key points through the use of monolithic castings.

LOCATION Dozer hand beam and hand lever

To ensure long service life and reliability, solid one-piece pushing beams are wide in width and not just attached to the side of the frame. In an angular slumber, tensions are transmitted and absorbed through most of the frame.

INTEGRATED TRANSMISSION MANAGEMENT AND CONTROL SYSTEM (STIC ™)

Experience maximum responsiveness and control with STIC, which combines the choice of direction, gear selection and steering in one lever.

A simple side-to-side movement turns the machine right or left, minimizing operator movement.

Easy to manage finger gear selection.

Smoother, faster cycles and less operator fatigue through the use of built-in controls with minimal effort.

WHEEL PLANETARY TRANSMISSION

Creating your success starts with a best-in-class powertrain designed specifically for mining.

Sequential smooth switching and efficiency thanks to integrated electronic controls.

Long service life and reliability due to heat treatment of equipment and metallurgy.

Three speeds forward and three backwards to fit your application.

CAT C27 ACERT ENGINE

The durability and efficiency of your 844K is ensured by the Cat C27 ACERT engine. Optimum performance is achieved through the use of 12-cylinder direct injection.

Optimized performance and fast engine response with electronic control module.

Reliable performance with full control of injection time, duration and pressure with injection of an electronically controlled electronic unit (MEUI ™).

Longer engine life and improved fuel efficiency at lower rated speeds

Designed to meet US EPA Tier 4 Final or Tier 2 standards.

IMPELLER (ICTC) Clutch Torque Converter And RIMPULL (RCS) CONTROL SYSTEM

Reduce your cost per ton using advanced ICTC and RCS for modulated thrust.

Reduce slippage and tire wear by modulating the thrust from 100 to 25 percent while simultaneously depressing the left pedal. After reaching 25% of the traction effort, the left pedal engages the brake.

Reduce the likelihood of wheel slippage without reducing hydraulic efficiency with RCS.

Improved fuel efficiency in certain applications thanks to our lock-up clutch torque converter for direct drive.

ELECTRO-HYDRAULIC CONTROL

Operators increase productivity with our responsive guns feature.

Work comfortably through the electronically controlled stops of the hydraulic cylinder.

Handle easy-to-use soft locks.

EASY RESPONSE

Increase operator efficiency by matching blade speed with your application.

Three different speeds: standard, accurate and fast.

Easy to configure via advisor display.

Affects only the function of raising and lowering the blade.

STEERING SYSTEM

Sure loader operation begins with precise machine control, which is provided by the load-sensing 844K hydraulic steering system.

Increase efficiency with our variable displacement piston pumps.

Achieve precise positioning for easy loading in hard-to-reach places with a 35-degree turning force

Enhance operator comfort with integrated steering and transmission functions.

FILTRATION SYSTEM

Take advantage of the increased performance and reliability of your hydraulic system with our state-of-the-art filtration system.

Drain filter in the lift / tilt housing.

Raise / tilt high pressure screens.

Filter stock steering.

High pressure steering screens.

Hydraulic body filter drain.

Filter lubrication drive front pump.

Front and rear brake oil screens.

STATION OPERATOR

Your operators can work more efficiently and feel comfortable with our cab features that are tailored to customer requirements.

ENTRANCE AND EXIT

Easily and safely enter and exit the cab thanks to new ergonomic features.

Two side access points.

Fold STIC steering / armrest.

Reduced access angle to the stairs.

CAT COMFORT SERIES III SEAT

Increase comfort and reduce operator fatigue with the Cat Comfort Series III seat.

High backrest design and very thick contour pads.

Air suspension system.

Easily accessible seat levers and controls for adjustment in six directions.

Installed on the seat module of the unit and the steering mechanism STIC, which moves with the seat.

Retractable seat belt width 76 mm (3 inches).

COACH SEAT

Safe training for other operators in comfort with our standard training chair.

Retractable seat belt width 76 mm (3 inches).

Folding design with molded tray for drinks and storage.

WEDNESDAY

Your operator`s productivity is enhanced by our clean and comfortable cab.

Experience a reduction in vibration from the viscous cab supports and air suspension of the seat.

Maintain the desired cab temperature with automatic temperature control.

Sealed cabin with filtered air.

Sound level reduced to a quiet 69 dB (A).

Convenient floor tray / lunch box.

TECHNOLOGICAL SOLUTIONS

The 844K electronic systems were fully integrated to function as one machine. This integration creates a smart machine and a more informed operator, maximizing the performance of both.

VIMS ™ 3G

We make every effort to help our customers and operators work best with our Vital Information Management System (VIMS 3G).

Easy to view adviser The display has a large screen.

Intuitive controls and easy navigation with our advanced user interface.

Reduce maintenance time by informing operators of the malfunction or operation of the machine system.

OPERATOR PROFILE

Operator comfort begins with individual settings for machine functions. Through our advisory display, the operator can instantly recall personalized profiles.

Store up to 10 separate operator profiles via advisor.

Reduce setup time between operators by invoking custom screen layouts.

CAT MINESTAR SYSTEM

The Cat MineStar System is the industry`s largest set of integrated mine management and mobile equipment technologies that can be customized to suit your work needs. Its feature sets — Fleet, Terrain, Detect, Health, and Command — contain a range of technologies that allow you to manage everything from fleet assignment and status monitoring to remote and autonomous control. The 844K can use many of these advanced technologies, some of which are standard in the factory.

FLEET

Fleet provides comprehensive machine tracking, assignment and performance management in real time, giving you a complete overview of all operations from anywhere in the world.

TRAINERS FOR LOADING

The landscape with your 844K allows you to accurately manage loading operations with navigation technology. This increases 844K performance and provides real-time feedback for increased efficiency.

DETECTION

Detection helps to increase operator awareness, increasing safety at your work. It includes a number of features designed to assist the operator in areas with limited visibility around fixed and mobile equipment.

HEALTH

Health provides critical vehicle status and operational data for your entire fleet. It includes comprehensive capabilities for monitoring the status of equipment and assets with a wide range of diagnostic, analytical and reporting tools.

SECURITY

We are constantly improving our products to provide a safe working environment for the operator and those who work in your workplace.

ACCESS MACHINE

Wider stairs with reduced tilt angles increase operator safety when entering and exiting the 844K.

Aisles with non-skid surfaces and built-in blocking / marking points are designed for service areas.

Windshield cleaning platforms provide safe and convenient access for the operator.

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

Emergency exit.

TRANSPARENCY

Optional folding curtains and heated mirrors provide improved visibility for safe operation.

The Cat Detection feature with object detection system (rear view camera and radar) or the Vision option (rear view camera) increases operator awareness around the machine.

Standard HID lamps provide excellent visibility of the work area.

The cab has LED signal beacons.

OPERATOR ENVIRONMENT

Low vibrations for the operator due to the viscous cab supports and air suspension of the seat.

Low noise level in the cabin.

An operator training point facilitates safe training for a new operator.

Standard 76 mm (3 in.) Seat belts on the operator’s seat and on the seat for operator training.

POWER ACCESS SYSTEM

The Cat-powered access system provides easier access to the main staircase, improving entry and exit to the rear platform and back.

Safe, ergonomic access system.

All operators have enough space when using the wide ladder.

Operators maintain three-point contact with full handrails on each side.

Raise the lower platform from the level of the cabin or from the ground.

Occupants can quickly fail with a conveniently located emergency drain valve if the loader fails.

WE CAN HELP YOU TO ENSURE YOU 844K HAS THE FEATURES OF THE DESIGN TO REDUCE YOUR TIME.

Extended service intervals for fluids and filters.

Safe and convenient service with terrestrial or platform access and grouped service points.

Swing doors on both sides of the engine compartment provide easy access to important daily maintenance checks.

Ecology drains for ease of maintenance and to prevent spills of potential environmental pollutants.

Centralized cranes with remote control.

Reduce downtime with VIMS system notifications so your operators and technicians can solve any problems before a crash.

SUPPORTING LEGENDARY CAT

Dear partner, your Cat dealer is always at your service.

Preventive maintenance programs and guaranteed service contracts.

Best-in-class parts availability.

Incease your effectiveness with operator training.

Original repaired Cat parts.

SUSTAINABLE PROFIT

Environmental friendliness is designed and built into our 844K features.

Turning the engine off at idle can help you save fuel by avoiding unnecessary idling.

With our maintenance-free batteries, reduce waste for the environment.

844K is created for several 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 to 70 percent, which reduces operating costs.

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.

DEPENDABLE BLADES

Maximize your productivity with a suitable blade for your dispenser.

High strength, extruded rib design.

Cat large tracked tractor on cutting edges and lower wear plates.

Optimized width and capacity for superior metering and rolling characteristics.

COAL BLADE

Increase your performance with the Cat Cat Blade, designed to maintain load control, and high capacity for lighter materials.

SEMI-U BLADE

Shows the characteristics of the S and U blades in the same housing for increased productivity, while maintaining the excellent distribution characteristics of the straight blade.

HEAVY SEX

For unsurpassed durability in high wear applications, Semi-U blade:

Hardox 400 Liner and side panels

 

Additional reinforcement at the bottom of the blade

ENGINE

Engine Model	Cat® C27 ACERT™
Gross Power	752.0 HP
Bore	5.4 in
Stroke	6.0 in
Displacement	1649.5 in³
Torque Rise	18.0 %
Net Power - SAE J1349 - Standard Ambient	699.0 HP
Net Power - SAE J1349	699.0 HP
Gross Power - ISO 14396	752.0 HP
Net Power - SAE J1349 - High Ambient	648.0 HP
Peak Torque - Speed	2624.0 lb/ft
Emissions	U.S. EPA Tier 4 Final or Tier 2 Equivalent
Rated Speed	1800.0 r/min
Gross Power - SAE J1995	766.0 HP

WEIGHTS

Operating Weight

165089.0 lb

TRANSMISSION

Converter Drive - Forward 1	4.5 mile/h
Converter Drive - Forward 2	8.3 mile/h
Converter Drive - Forward 3	14.2 mile/h
Converter Drive - Reverse 1	4.9 mile/h
Converter Drive - Reverse 2	9.1 mile/h
Converter Drive - Reverse 3	15.5 mile/h
Direct Drive - Forward 2	8.5 mile/h
Direct Drive - Forward 3	15.2 mile/h
Direct Drive - Reverse 1	5.4 mile/h
Direct Drive - Reverse 2	9.6 mile/h
Direct Drive - Reverse 3	16.4 mile/h
Transmission Type	Cat Planetary Power Shift
Direct Drive - Forward 1	Lock-up disabled

SERVICE REFILL CAPACITIES

Fuel Tank - Standard	286.6 gal (US)
Cooling System	54.9 gal (US)
Crankcase	20.0 gal (US)
Transmission	29.1 gal (US)
Differential - Final Drives - Front	71.6 gal (US)
Differential - Final Drives - Rear	68.9 gal (US)
Hydraulic System - Implement and Hydraulic Fan	68.9 gal (US)
Hydraulic System - Steering and Braking	34.9 gal (US)

CAB

Cab - ROPS/FOPS (1)	Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan.
Air Conditioning	Standard air conditioning system contains environmentally friendly R134a refrigerant
ROPS	ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.
Cab - ROPS/FOPS (2)	SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994
FOPS	FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.

BRAKES

Brakes

Meets ISO 3540:2011

AXLES

Front	Fixed
Rear	Trunnion
Oscillation Angle	8.5 °

BLADE

Blade Capacity Range

15.9-30.7 m3 (20.7-40.2 yd3)

SOUND PERFORMANCE - STANDARD

Machine Sound Level (ISO 6395:2008)	115.0 dB(A)
Operator Sound Level (ISO 6396:2008)	69.0 dB(A)

SOUND PERFORMANCE - SUPPRESSION

Machine Sound Level (ISO 6395:2008)	113.0 dB(A)
Operator Sound Level (ISO 6396:2008)	69.0 dB(A)

HYDRAULIC SYSTEM - LIFT/TILT

Relief Valve Setting - Tilt Cylinders (Small Pump)	2920.0 psi
Output at 2,000 rpm and 6900 kPa (1,000 psi)	82.0 gal/min
Cylinders, Double Acting - Lift, Bore and Stroke	133 mm × 1535 mm (5.25 in × 60.4 in)
Relief Valve Setting - Bulldozer (Large Pump)	2700.0 psi
Cylinder, Double Acting - Tilt and Tip, Bore and Stroke	210 mm × 188 mm (8.25 in × 7.4 in)

HYDRAULIC SYSTEM - STEERING

Total Steering Angle	35.0 °
Steering System - Circuit	Pilot, load sensing
Minimum Turning Radius - Over Blade	34.0 ft
Relief Valve Setting	4500.0 psi
Steering System - Pump	Piston, variable displacement
Maximum Flow	94.3 gal/min

DIMENSIONS (APPROXIMATE)

Height - Top of Exhaust Pipe	16.6 ft
Wheel Base	15.1 ft
Length - With Blade on Ground	36.5 ft
Centerline of Rear Axle to Edge of Bumper	12.5 ft
Centerline of Front Axle to Hitch	7.5 ft
Height - Top of ROPS	17.2 ft
Ground Clearance	2.0 ft
Height - Top of Hood	12.7 ft

Dimensions

Dimensions (Approximate)

Ground Clearance 2ft in

Specifications

Engine

Gross Power 752hp

Rated Speed 1800rpm

Torque Rise 18%

Displacement 1649.5cu in

Bore 5.4in

Stroke 6in

Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent

Net Power - SAE J1349 699hp

Gross Power - SAE J1995 766hp

Engine Model Cat C27 ACERT

Peak Torque - Speed 2624rpm

Gross Power - ISO 14396 752hp

Net Power - SAE J1349 - Standard Ambient 699hp

Net Power - SAE J1349 - High Ambient 648hp

Transmission

Transmission Type Cat Planetary Power Shift

Direct Drive - Forward 3 15.2mph

Direct Drive - Reverse 3 16.4mph

Direct Drive - Forward 2 8.5mph

Direct Drive - Reverse 2 9.6mph

Converter Drive - Forward 3 14.2mp

Converter Drive - Reverse 3 15.5mph

Direct Drive - Forward 1 Lock-up disabled

Converter Drive - Forward 1 4.5mph

Converter Drive - Forward 2 8.3mph

Direct Drive - Reverse 1 5.4mph

Converter Drive - Reverse 1 4.9mph

Converter Drive - Reverse 2 9.1mph

Blade

Blade Capacity Range 15.9-30.7 m3 (20.7-40.2 yd3)

Axles

Front Fixed

Rear Trunnion

Oscillation Angle 8.5 degrees

Brakes

Brakes Meets ISO 3540:2011

Service Refill Capacities

Cooling System 54.9gal

Crankcase 20gal

Fuel Tank - Standard 286.6gal

Transmission 29.1gal

Differential - Final Drives - Front 71.6gal

Differential - Final Drives - Rear 68.9gal

Hydraulic System - Implement and Hydraulic Fan 68.9gal

Hydraulic System - Steering and Braking 34.9gal

Dimensions (Approximate)

Height - Top of ROPS 17.2ft in

Ground Clearance 2ft in

Wheel Base 15.1ft in

Height - Top of Exhaust Pipe 16.6ft in

Length - With Blade on Ground 36.5ft in

Height - Top of Hood 12.7ft in

Centerline of Rear Axle to Edge of Bumper 12.5ft in

Centerline of Front Axle to Hitch 7.5ft in

Hydraulic System - Lift/Tilt

Cylinders, Double Acting - Lift, Bore and Stroke 133 mm 1535 mm (5.25 in 60.4 in)

Cylinder, Double Acting - Tilt and Tip, Bore and Stroke 210 mm 188 mm (8.25 in 7.4 in)

Output at 2,000 rpm and 6900 kPa (1,000 psi) 82 gal/min

Relief Valve Setting - Bulldozer (Large Pump) 2700 psi

Relief Valve Setting - Tilt Cylinders (Small Pump) 2920 psi

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing

Steering System - Pump Piston, variable displacement

Total Steering Angle 35degrees

Maximum Flow 94.3 gal/min

Minimum Turning Radius - Over Blade 34ft in

Relief Valve Setting 4500 psi

Cab

Air Conditioning

Standard air conditioning system contains environmentally friendly R134a refrigerant

ROPS

ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.

FOPS

FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.

Cab - ROPS/FOPS (2)

SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994

Cab - ROPS/FOPS (1)

Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan.

Sound Performance - Standard

Machine Sound Level (ISO 6395:2008) 115 dB(A)

Operator Sound Level (ISO 6396:2008) 69 dB(A)

Sound Performance - Suppression

Operator Sound Level (ISO 6396:2008) 69 dB(A)

Machine Sound Level (ISO 6395:2008) 113 dB(A)