The 966G delivers excellent breakout force, fast load and cycle times, and precise maneuvering for top all-around performance. Proven components, combined with easy maintenance ensures reliability over the life of the machine.

Engine Model Cat® 3306 DITA
Flywheel Power 235 hp
Max. Flywheel Power 253 hp
Displacement 638.31 in3

Operating Weight 50410 lb

Maximum Bucket Capacity 5.25 yd3

Hydraulic System
Hydraulic Cycle Time - Raise 6.6 Seconds
Hydraulic Cycle Time - Dump 1.3 Seconds
Hydraulic Cycle Time - Lower, Empty, Float Down 1.8 Seconds
Hydraulic Cycle Time - Total 9.7 Seconds

Service Refill Capacities
Fuel Tank - Standard 108.3 gal
Cooling System 21.13 gal
Crankcase 7.4 gal
Transmission 13.21 gal
Differentials and Final Drives - Front 16.91 gal
Differentials and Final Drives - Rear 16.91 gal
Hydraulic System (Including Tank) 54.68 gal
Hydraulic Tank 36.98 gal

Forward 1 4.47 mph
Forward 2 7.83 mph
Forward 3 13.48 mph
Forward 4 23.18 mph
Reverse 1 5.1 mph
Reverse 2 8.89 mph
Reverse 3 15.29 mph
Reverse 4 26.28 mph
Travel Speed 23.1 mph

Front Fixed
Rear Trunnion
Maximum Single-Wheel Rise and Fall 19.76 in

Operating Specifications
Dump Clearance 10.1 ft
Static Tipping Load, Full Turn 30870 lb
Breakout Force 44120 lb

Superior engineering and materials provide excellent strength and durability for an all purpose machine.


Articulated Frame
The articulated frame consists of a durable box-section engine frame and a rigid four-plate loader tower to absorb impact forces and provide a solid foundation for the entire machine.

Upper and Lower Hitch Pins
Upper and lower hitch pins pivot on double-tapered roller bearings. This design distributes vertical and horizontal loads over a greater surface area for extended life.

Frame Structure Specifically Designed for Efficiency
The frame structure is specifically designed for efficiency. It features increased machine stability without sacrificing turning radius, improved loader performance and operating specifications, and improved serviceability to frame and components.

Frames Tested Under Severe Applications
The frames were tested under severe applications including virgin material hardbank digging, load and carry, bump course travel and J-hook corner loading.

The six-cylinder, direct injection, turbocharged and aftercooled engine is built for power, reliability, low maintenance, excellent fuel economy and low emissions.


Powerful Performance
The 3306 DITA Engine is built for power and meets all current and proposed worldwide emissions standards.

Four-Stroke Cycle Design
The four-stroke cycle design delivers long power strokes, efficient fuel combustion with low emissions, and excellent fuel economy.

Precise Engineering and Stringent Testing
Precise engineering and stringent testing help maintain a tradition of quality and offer built-in serviceability, profit-boosting performance, and heavy-duty durability and reliability.

Torque Rise
The unit fuel system increases fuel as the engine lugs back from rated sped, resulting in greater engine torque rise.

Deep Skirt Engine Block Design
The deep skirt engine block design ensures rigidity and reduces vibration.

Caterpillar Engine Oil
Caterpillar engine oil is formulated to optimize engine life and performance and is strongly recommended for use in Cat diesel engines.

Factory Remanufactured Parts
A large choice of factory remanufactured parts and dealer proposed repair options increase machine availability and reduce total repair costs.

Caterpillar power train makes dependable performance a standard feature.


Powershift Transmission with Automatic Shift Capability
The powershift transmission with automatic shift capability is designed, developed and built by Caterpillar.

Caterpillar Transmission Oil
Caterpillar transmission oil is balanced to provide optimum friction control for powershift transmission disc material and at the same time optimizes transmission life.

Electronic Clutch Pressure Control (ECPC)
Electronic Clutch Pressure Control (ECPC) delivers smoother shifting and extended clutch life.

Transmission Neutralizer
A transmission neutralizer allows the operator to disengage the transmission clutches, removing torque from the drive train.

Six, Proportional Electro-Hydraulic Valves
Six, proportional electro-hydraulic valves driving the clutches are identical and are easy to service.

Easy Maintenance
Easy maintenance is designed into the transmission.

Large, heavy-duty axles protect internal components from the harsh environment and offer excellent serviceability.


Heavy-Duty Axles and Brakes
Heavy-duty axles and brakes are designed to last in all kinds of operating conditions.

Four-Piece Axle Design
The four-piece axle design contains two axle shaft housings, the center housing, and the intermediate housing.

Patented Metal-To-Metal, Duo-Cone Seals
Patented metal-to-metal, Duo-Cone Seals between the axle shafts and housings keep lubrication in and dirt out.

External Port
An external port provides access to measure brake disc wear without disassembling the axle.

Well-balanced hydraulics deliver precise, low-effort control and trouble-free operation.


Low-Effort Hydraulic Controls
Low-effort hydraulic controls allow the operator to precisely maneuver bucket lift and tilt.

Smooth, Efficient Steering
Load sensing steering maximizes machine performance by directing power through the steering system only when needed.

Positive-Displacement Hydraulic Pumps
Positive-displacement hydraulic pumps perform with high efficiency and great reliability.

Caterpillar Hydraulic Oil
Caterpillar hydraulic oil offers maximum protection against mechanical and corrosive wear in all hydraulic systems. Its high zinc content reduces wear and extends pump life.

Caterpillar XT Hoses and Couplings
Caterpillar XT hoses and couplings are uniquely designed and tested to work together as a system for superior performance.

Automatic Ride Control
Automatic Ride Control is an optional attachment that helps operators perform better.

Pressure Taps
Pressure taps allow quick diagnosis of the hydraulic system.

Sampling Valve
Sampling valves provide easy access to hydraulic oil for S-O-S oil analysis.

Operator Controls
Low-effort controls provide ease of operation for increased comfort and efficiency.

Operator Controls

Two Operator Control Configurations
The 966G is available with two different configurations of operator controls - one with electro-hydraulic bucket/work tool controls and Command Control steering, and another with pilot hydraulic implement controls and Conventional steering.

Electronic Autoshift Control
Electronic Autoshift Control allows the operator to concentrate on the work, not gear selection.

Dual-Pedal Braking
Dual-pedal braking lets the left pedal function as a transmission neutralizer and as a brake.

Transmission Neutralizer Lockout Switch
Transmission neutralizer lockout switch lets the operator shut the neutralizer off, allowing the left pedal to work as a brake only. This provides a choice to operators who prefer to operate without a neutralizer or to match the application.

Operator Station
Comfort and control - top-quality operator station will help maximize productivity.

Operator Station

966G Cab
The 966G cab is a spacious and comfortable work environment that promotes productive operation. The cab includes improved viewing area, ease of service, ergonomic design and control placement, improved ventilation and generous storage areas.

Improved Viewing
The 966G cab provides improved viewing in all directions.

Command Control Steering
The 966G is available with Command Control steering with integrated transmission controls.

Fingertip Bucket Controls
Fingertip bucket controls, available in the Command Control Steering configuration only, use electro-hydraulics for extremely low effort and precise hydraulic modulation capability.

Automatic Lift/Lower Kickouts
Automatic lift/lower kickouts are easily adjustable from the cab. Kickout stops are hydraulically cushioned for greater operator comfort and less material spillage.

Left, Rear-Hinged Door
Left, rear-hinged door provides entrance and exit to the operator station. The swing open right-side window provides a secondary exit if needed.

Dual Brake Pedals
Dual brake pedals serve brake and transmission neutralizer functions (left pedal only for neutralizer) so the operator can maintain high engine rpm for full hydraulic flow.

Generous Storage Space
Generous storage space includes a coat hook and molded compartments for lunchbox, cooler, thermos, cup or can.

Caterpillar Contour Series Seat
Caterpillar Contour Series seat, which is standard on the Command Control steering version and optional on the Conventional steering version, is 6-way adjustable, providing comfort and support.

Improved Ventilation
The 966G cab features improved ventilation for better airflow to the operator and windows. There are twelve louvered vents with two on each door post.

Electronic Autoshift Control
Electronic Autoshift Control allows the operator to concentrate on the work, not gear selection.

Ride Control Switch
Ride control switch allows the selection of three different modes: Off, On and Auto.

Transmission Neutralizer Lockout
A transmission neutralizer lockout switch lets the operator shut the neutralizer off, allowing the left pedal to work as a brake only.

Conventional Steering Configuration
The Conventional steering configuration offers generous storage, including a lockable compartment for personal items.

Conventional Steering Wheel
The Conventional steering wheel can be positioned infinitely within the tilt range by the operator.

Pilot-Assisted, Hydraulic Bucket
Pilot-assisted, hydraulic bucket control, available only in the conventional steering wheel configuration, makes low-effort operation possible. Pilot lines are marked and can be easily disconnected at the bottom of the right-hand door.

Quick Gear Kickdown Button
A quick gear kickdown button lets the operator downshift easily to a lower gear, saving time, increasing bucket fill factors and lowering cycle times.

Padded, Adjustable Wrist Rest
The conventional steering wheel comes with a padded, adjustable wrist rest to help reduce fatigue. The Command Control Steering cab has a full right side padded and adjustable armest.

KAB Seat
KAB seat is standard on the Conventional steering configuration, with adjustable fore/aft position, seatback angle, lumbar support, bottom cushion height, armrest angle and suspension stiffness.

Radio-ready means this cab includes a 12-volt converter (5-amp), speakers, antenna, all wiring and brackets for entertainment radio installation.

Other Options
Other options available for the 966G operator station include air conditioning, Payload Control System, sun visor, and external mirror package.

Buckets and Ground Engaging Tools
A wide variety of bucket and Ground Engaging Tool combinations optimize performance and versatility of the 966G.

Buckets and Ground Engaging Tools

General Purpose Buckets
Combinations are designed for a broad range of applications such as bank loading, excavating, and stockpile loading.

Corner Guard System
A corner guard system allows maximum flexibility between teeth and edge systems providing superior protection and performance for each application.

Bolt-On Cutting Edge and End Bits
They are standard DH-2 and reversible for superior strength and wear life. Optional Abrasion Resistant Material (ARM) with impregnated tungsten carbide if available for maximum wear life in low-to-medium impact applications.

New, Two-Bolt Corner Adapter
A new, two-bolt corner adapter is securely attached to prevent shifting.

Bolt-On, Two-Strap Center Adapters
The 966G comes with bolt-on, two-strap center adapters.

Heavy-Duty, Reversible, Bolt-On Segments
Heavy-duty, reversible, bolt-on segments protect the base edge eliminating scalloping and maintaining a smooth work surface.

Material Handling Buckets
Several combinations have a flat floor for excellent performance, easier pile penetration, better fill factors and faster loading cycles in stockpile applications.

Rock Buckets
Several combinations have a spade-edge design that provides easier penetration and makes them well suited to high-impact jobs. Rock buckets are available with or without teeth.

Ground Engaging Tools (G.E.T.)
Many Ground Engaging Tool (G.E.T.) options are available to help meet the special needs of each machine and application.

Keep machines up and running with easy-to-perform daily maintenance.


Maintenance has never been more accessible than on G-Series machines. Fast, easy and reduced maintenance means improved uptime and greater value.

Sloped Hood
Sloped hood, electrically activated, tilts up for complete access to the engine, cooling system and other major components.

Sampling Valves
Sampling valves allow quick, clean access to engine, transmission and hydraulic oils, and provide the most representative oil samples for analysis.

Ecology Drains
Ecology drains for the engine, transmission, hydraulics, radiator and fuel are factory installed and replace the standard drain plugs.

Cat Engine, Transmission, and Hydraulic Oils
Caterpillar engine, transmission and hydraulic oils deliver maximum performance and service life.

Factory Remanufactured Parts
A large choice of factory remanufactured parts and dealer proposed repair options increases machine availability and reduces repair cost.

Total Customer Service
Unmatched in the industry.

Total Customer Service

Customer Support Agreement
Cat Dealers offer a wide variety of product support agreements, and work with 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.

Make detailed comparisons of the machines under consideration before purchase.

Look past initial price. Consider the financing options available as well as day-to-day operating costs.

Improving operating techniques can boost profits. Cat Dealers have training videotapes, literature and other ideas to help increase productivity.

Choose from a wide range of maintenance services at the time you purchase a machine. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S-O-S oil analysis and technical analysis help avoid unscheduled repairs.

Repair, rebuild or replace? Cat Dealers can help evaluate the cost involved so customers can make the right choice.

Product Support
Cat Dealers utilize a worldwide computer network to find in-stock parts to minimize machine down time. Save money with remanufactured parts. Receive the same warranty and reliability as new products at cost savings of 40 to 70 percent.

Add versatility to the machine with a wide range of buckets and attachments designed for the 966G to optimize operation.


A Complete Range of Attachments and Tools
Caterpillar attachments include quick couplers, buckets, forks, snow plows, rakes and hooks.



Cat 246
my cat 246 was running fine when we parked it . the next day turned the key on, had buzzer, glow plu...  [More]

CAT 307C 2004 Hydraulic Drawings
I've got an older colleague with a 307C 2004-model excavator. He came to me asking if it's possible...  [More]

Over Excitation Shutdown Problem For 3512 Diesel Generator
please give any advice to me.. i have using caterpillar 3512 generator from last 4 months in my...  [More]

Fuel Lines
I need help I have a D4D dozer 1974 year model and the s/n 82j3434 . I bought it ran great went back...  [More]
Feel free to ask a question or share a comment about the information on this page.

To help us answer your question or respond to your comment, please enter your email address.