307C Hydraulic Excavator

Features & Benefits

Engine The 307C is powered by the MMC 4M40 engine. This engine includes several design features which enhance performance, efficiency and reliability. Show details... 4M40-E1 Engine Cylinder Block Pistons Low Fuel Consumption Maintenance Crankshaft Cooling

4M40-E1 Engine The 307C uses the newest 4M40-E1 engine made by Mitsubishi Motors Corporation (MMC). This engine was developed specifically for construction machinery and features long-stroke piston movement for high torque at medium to low speeds, good fuel consumption and low noise.

Cylinder Block The cylinder block is cast iron for improved wear resistance. The upper part is laser hardened to reduce oil consumption and internal component wear.

Pistons Heat resistant aluminum alloy pistons have a short compression height, reducing weight and improving efficiency. The piston ring set consists of three rings, which are treated for wear resistance.

Low Fuel Consumption The 4M40-E1 engine features low fuel consumption, improved thermal efficiency and reduced friction resistance between piston and liners.

Maintenance To make daily maintenance easy, the oil level gauge, oil filter, fuel filter and priming pump are located on the left side of the engine.

Crankshaft For durability and high reliability the surface of the crankshaft journals and pins are induction hardened to reduce wear.

Cooling A large diameter fan and full length, water-cooled engine cylinders, combined with excellent thermal efficiency, help prevent overheating, prolong engine life and ensure the ability to operate at high temperatures and under heavy loads.

Undercarriage and Blade Rugged Caterpillar undercarriage design and proven structural manufacturing techniques assure outstanding durability in the toughest applications. New grease lubricated seals protect and prolong track life. Show details... Structures Carbody Design and Track Roller Frames Rollers and Idlers Blades Segment-type Rubber Track Grease Lubricated Track Travel Motors Idler Guard Track Shoes

Structures Proven structural manufacturing techniques assure outstanding durability and service life from these important components.

Carbody Design and Track Roller Frames The 307C carbody is a box section "X" structure. The "X" structure is designed with the carbody welded close to the ends of the track roller frames. As a result, overall rigidity is high and resistance to torsional bending between the track roller frames and the carbody is increased. The press-formed, pentagonal track roller frames and carbody are robot welded to ensure a continuous and high-quality weld. The welds are long, which contributes to smoother transition of loads and increases endurance. The sloped top of the track frame allows accumulated mud and debris to be cleaned away easily.

Rollers and Idlers Sealed and lubricated track rollers, carrier rollers and idlers provide excellent service life, keeping the machine in the field longer.

Blades Two optional blades are available to accommodate both track widths. Cutting edges on the blades are now replaceable and reversible. With the optional blades, the 307C can doze, backfill trenches, level working space and speed site cleanup.

Segment-type Rubber Track Available as an attachment, the segment-type rubber track is available for use in urban areas. It helps prevent damage to concrete and other road surfaces.

Grease Lubricated Track New grease lubricated seals protect the track link and deliver long track link pin and bushing inner wear life by helping to keep dirt and debris from entering the pin and bushing joint.

Travel Motors Automatic speed selection enables the machine to automatically change up and down from high and low speeds in a smooth, controlled manner.

Idler Guard An idler guard, which is integral to the track roller frame, is standard. This guard helps maintain track alignment while traveling or working on slopes.

Track Shoes The 307C offers two widths of steel track shoes as well as rubber pads. The narrowest shoe (480 mm/18") has four holes for rubber pad installation. The rubber pads are attached to the track shoes, eliminating potential damage to paved road surfaces. The elasticity of the rubber pad minimizes noise and vibration during machine operation.

Front Linkage Designed-in flexibility helps bring higher production and efficiency to all jobs. Show details... Front Linkage Parallel Offset Boom One-Piece Boom Construction Swing Boom Linkage Pins Linkage Bearings Buckets Bucket-Flop Adjustment Mechanism

Front Linkage Front linkage variations on the 307C allow the use of two booms, two sticks, and five buckets. Using these combinations improves the general-purpose versatility of the excavator by suiting it to a diverse range of applications. The 307C SB provides further versatility to meet the needs of any job. Show details... Parallel Offset Boom One-Piece Boom Construction Swing Boom Linkage Pins

Parallel Offset Boom Optional only on the 307C, the parallel offset boom allows the boom and stick to dig parallel to the tracks up against walls, fences, or other obstacles. The parallel offset boom is capable of both digging and loading by only operating its offset cylinder and without changing the machine's position or swing angle. Easier operation and faster cycle time provide excellent versatility. Under normal conditions, this attachment is recommended for use with the medium stick.

One-Piece Boom The one-piece boom measures 3.7 m (12'2") with a fabricated box-section design. The 307C boom uses high-tensile steel for upper, lower and side plates and is robot welded for consistent quality.

Construction Built for performance and long service life, Caterpillar booms and sticks are large, welded, box-section structures with thick, multi-plate fabrications in high-stress areas.

Swing Boom The swing boom has a fabricated box-section design and high-tensile strength steel for upper, lower and side plates and is robot-welded for consistent quality. The boom swings to the left 60 degrees and to the right 69 degrees, allowing for side ditch digging against walls, fences or other obstacles.

Linkage Pins The 307C linkage pins, which are used with high-stress parts such as at the boom foot and boom cylinders, have a thick chrome finish to maximize durability.

Linkage Bearings New bearing technology has extended the front linkage greasing intervals for all bearings except the bucket.

Buckets High tensile strength steel is used in high-stress areas for excellent wear and shock resistance. The side plates are tapered to prevent contact of the bucket sidewalls during trenching operations. All buckets are general purpose, share a common side profile and have lifting eyes. Show details... Bucket-Flop Adjustment Mechanism

Bucket-Flop Adjustment Mechanism All 300 family excavator buckets are equipped with a bucket flop adjustment mechanism which allows the operator or serviceman to reduce the side play at the bucket to stick-nose connection. To reduce the play, or bucket slap, three bolts on each side of the bucket hinge pin are loosened and the cover removed. Shims already in the bucket adjustment mechanism can be removed to reduce bucket slap.

Operation Station Larger, quieter, climate-controlled cab has excellent sightlines to the work area to help keep operator fatigue low and production up throughout the entire shift. Show details... Seat Cab Exterior Cab Mounts Wiper Console Seat and Console Adjustment Automatic Climate Control Monitor Redesigned Interior Layout Travel Controls Boom Swing Control Pedal Hydraulic Actuation Control Lever Viewing Upper Front Windshield Lower Front Windshield Right-Side Window Cab Door Window Skylight

Seat A new seat with a two-tone color offers two types of cushions - soft and hard - for operator comfort. The reclining knob is located at the right-side of the seat for easier reclining adjustment.

Cab Exterior The cab is newly designed and enlarged using asymmetrical steel tubing for improved resistance to fatigue and vibration. Falling Object Guard System (FOGS) may be bolted directly to the cab.

Cab Mounts The cab shell is attached to the frame with improved viscous mounts, reducing vibration and sound.

Wiper With continuous and intermittent modes, the wiper is positioned on the right cab pillar, further improving the operator's viewing area.

Console The 307C consoles have been redesigned for simplicity and functionality. Both consoles have attached adjustable armrests, providing good access to control levers. The height of the 307C armrests can also be adjusted for comfort. Show details... Seat and Console Adjustment

Seat and Console Adjustment The 307C seat and console are fastened to rails suspended from the cab floor. This design allows the seat and console to be adjusted and slide together and to absorb vibration from the cab floor. The seat can also slide separately. Seat and console height adjustment is integrated into the 307C. This mechanism allows the seat and console to be adjusted together, while the relative position remains the same.

Automatic Climate Control Fully automatic climate control adjusts temperature and flow and determines which air outlet is best in each situation.

Monitor New, compact monitor enhances viewing from the operator's seat while displaying a variety of easy to read and understand information.

Redesigned Interior Layout The 307C cab has been increased in size and redesigned to maximize operator space and make the cab as liveable as possible. The redesigned cab layout emphasizes simplicity and ease of use. Right-hand wall and console provide easy access to all switches, dials and controls.

Travel Controls A large rubber-covered footrest at the side of the travel pedals allows the foot to easily grip the pedal. The travel lever stroke and force have been enhanced to improve the 307C's fine controllability, making the machine easier to operate.

Boom Swing Control Pedal The 307C boom swing control is actuated by the foot pedal, conveniently located to the right of the travel pedal. The 307C foot pedal is arranged sideways to allow work on the foot pedal on both sides, enabling the boom swing control according to the actual movement.

Hydraulic Actuation Control Lever For easy access, the larger hydraulic actuation control lever is attached to the cab floor. When in the locked position, the hydraulic activation control lever cuts the pilot pressure for the control levers. It also cuts the power circuit for engine starting in the locked position. In addition to deactivating the control and travel levers, the hydraulic activation lever prevents the engine from starting. To move control lever to the lock position, simply push the button and raise the control lever.

Viewing Window glass is affixed directly to the cab, eliminating window frames which interfere with the operator's viewing area. A larger right-side window also enhances viewing. Show details... Upper Front Windshield Lower Front Windshield Right-Side Window Cab Door Window Skylight

Upper Front Windshield The upper front windshield opens, closes and stores on the roof above the operator. Grips on the mid-lower part of the front windshield make opening easy.

Lower Front Windshield The lower front windshield glass features a rounded design that maximizes downward viewing. The windshield can be removed and stored at the left rear of the cab.

Right-Side Window The 307C uses a large right-side window to improve the operator's awareness of the right side of the machine.

Cab Door Window The upper cab door window slides open, providing extra ventilation and allowing communication with people outside. The fixed lower window provides good viewing of the ground.

Skylight A larger polycarbonate skylight delivers excellent natural lighting and good ventilation. Gas cylinders make opening the skylight easy and eliminate the need to lock the skylight in the open position. A standard sliding sunshade protects the operator from the direct sunlight.

Serviceability Longer service intervals and easier maintenance results in better machine availability and lower owning and operating costs. Show details... Extended Service Interval Ground-level Maintenance Engine Inspection Radiator and Pump Compartment Water Separator Air Filter Grease Lubricated Track Fan Guard Anti-Skid DT Electrical Connectors Handrail and Step

Extended Service Interval 307C service and maintenance intervals have been extended to reduce machine service time and increase machine availability.

Ground-level Maintenance All daily maintenance areas are situated where they can be easily reached from ground level. Changing the engine oil filter, checking the engine oil level, changing the fuel filter, checking the radiator fluid level, checking the window washer fluid level, inspecting the air filter, changing the pilot filter and checking the battery can be accomplished easily from the ground level by opening the engine hood.

Engine Inspection The engine can be accessed from the upper structure or from under the machine. The engine hood features a gas cylinder-assist mechanism, making the hood easy to open. A steel wall separates the engine and pump compartments.

Radiator and Pump Compartment Opening the engine hood allows easy access to the engine radiator, engine oil cooler, pump and pilot filter. A reserve tank and drain cock are attached to the radiator to simplify maintenance.

Water Separator The water separator is located in the radiator compartment for easy access from the ground.

Air Filter The 307C features a Cat radial seal for superior cleaning efficiency.

Grease Lubricated Track Grease lubricated seals protect the track link and deliver long track link pin and bushing inner wear life.

Fan Guard Engine radiator fan is completely enclosed by fine wire mesh, reducing the risk of an accident.

Anti-Skid Anti-skid punched star plate covers the top of the storage box to prevent slipping during maintenance. The plate can be removed for cleaning.

DT Electrical Connectors 307C DT electrical connectors are water and vibration resistant, which improves electrical system reliability. No special tools are needed to connect and disconnect DT connectors.

Handrail and Step Large handrails and steps assist operator in climbing on and off the machine.

Complete Customer Support Your Cat dealer offers a wide range of services that can be set up under a Customer Support Agreement when you purchase your equipment. The dealer will help you choose a plan that can cover everything from machine and attachment selection to replacement. Show details... Selection Purchase Operation Maintenance Replacement Product Support

Selection Make detailed comparisons of the machines you are considering before you buy. What are the job requirements? What production is needed? What is the true cost of lost production? Your Cat dealer can give you precise answers to these questions.

Purchase Look past initial price, look at the value the 307C offers. Consider the financing options available as well as day-to-day operating costs.

Operation Improving operating techniques can boost your profits. Your Cat dealer has training literature and other ideas to help you increase productivity.

Maintenance Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as Scheduled Oil 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.

Product Support You will find nearly all parts at our dealer parts counter. Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine down time. You will save money with remanufactured components.

Hydraulics The open-center, two-pump hydraulic system features pump flow control which improves fuel efficiency, ensures smooth controllability, reduces sound levels and extends component life. Show details... Hydraulic Cross Sensing System Controllability Pump Flow Auxiliary Hydraulic Valve Hydraulic Cylinder Snubbers Component Layout Stackable Valves Pilot System Auxiliary Hydraulics

Hydraulic Cross Sensing System The hydraulic cross-sensing system utilizes each of the two hydraulic pumps to 100 percent of engine power under all operating conditions.

Controllability The hydraulic system offers precise control to the 307C, reducing operator fatigue and improving operator effectiveness and efficiency, which ultimately translates into enhanced performance.

Pump Flow Pump flow decreases when controls are in neutral for reduced fuel consumption and sound.

Auxiliary Hydraulic Valve The hydraulically controlled auxiliary valve is installed as standard in the main control valve. Typically, this valve is used for hammer operations with one-pump flow. This auxiliary valve increases the flexibility of the machine by making attachments easier to install.

Hydraulic Cylinder Snubbers Hydraulic cylinder snubbers at the rod-end of boom cylinders and both ends of stick cylinders cushion shocks, reduce sound and increase cylinder life.

Component Layout The 307C hydraulic system was designed to provide a high level of efficiency. With all major components located close together, shorter tubes and lines are needed, resulting in less friction loss in the lines and reduced pressure drops.

Stackable Valves Up to two stackable valves can be added to the main control valve (one on the 307C SB) for added versatility.

Pilot System The hydraulic pilot system controls the front linkage, swing and travel operations. Increased pilot hydraulic pressure on the 307C provides better control and performance.

Auxiliary Hydraulics For further versatility, a dedicated hammer (single function), thumb (double function) and combined auxiliary hydraulics are offered on the 307C.

Standard Equipment

Alternator, 35-amp

Boom lowering device (accumulator)

Brake, automatic swing holding

Cab, sound supressed, includes: adjustable arm rest air conditioner with defroster antenna ash tray beverage holder cigar lighter coat hook dial-type throttle floor mat horn, front hydraulic system neutralizing lever joysticks, pilot-operated KAB 528P/C seat with suspension, four way adjustable without head rest lighting, interior literature compartment monitoring system openable front window radio, AM/FM stereo removable lower windshield with storage bracket inside cab roof hatch seat belt travel control levers

adjustable arm rest

air conditioner with defroster

antenna

ash tray

beverage holder

cigar lighter

coat hook

dial-type throttle

floor mat

horn, front

hydraulic system neutralizing lever

joysticks, pilot-operated

KAB 528P/C seat with suspension, four way adjustable without head rest

lighting, interior

literature compartment

monitoring system

openable front window

radio, AM/FM stereo

removable lower windshield with storage bracket inside cab

roof hatch

seat belt

travel control levers

Door and cap locks, one key

Counterweight

Fully opening rear hood

Hydraulic valve port, auxiliary

Light: frame, right-side

frame, right-side

Mirror, right-hand side

One touch low idle

Pillar mounted wiper

Reverse swing damping valve

Straight travel circuit

Tool box

Track, 450 mm (18") shoes

Track guiding guards, idlers

Two-speed travel

Windows: main windshield wiper and washer right and rear windows, polycarbonate sliding door window, tempered glass Windshield, two-piece: upper, retractable laminated glass lower, tempered glass

main windshield wiper and washer

right and rear windows, polycarbonate

sliding door window, tempered glass

Windshield, two-piece: upper, retractable laminated glass lower, tempered glass

upper, retractable laminated glass

lower, tempered glass

Optional Equipment

Alarm, travel

Blade: 2300 mm (7'6") 2400 mm (7'10")

2300 mm (7'6")

2400 mm (7'10")

Boom, lowering control device

Boom, power offset

Boom, one-peice

Buckets

Bucket linkage

Control Pattern Changer SAE/BHL

Coolant, extended life

Cooling package, high ambient

Guards: Falling Objects Guard System headrest for KAB 528P/C, T8P/C swivel front windshield vandalism protection

Falling Objects Guard System

headrest for KAB 528P/C, T8P/C

swivel

front windshield

vandalism protection

Heater

Hydraulic arrangements, auxiliary: single-function capability double-function capability combined single and double function capability

single-function capability

double-function capability

combined single and double function capability

Hydraulic lines, auxiliary: sticks boom

sticks

boom

Lights: boom, right working, cab-mounted (2)

boom, right

working, cab-mounted (2)

Morror, cab left

Power Supply, 12V 5Amp

Side cutters

Seats, suspension: KAB T8P/C seat without suspension, head rest KAB T1P/C vinyl seat without suspension, head rest KAB 527P/C high back seat with suspension, console adjustment, head rest

KAB T8P/C seat without suspension, head rest

KAB T1P/C vinyl seat without suspension, head rest

KAB 527P/C high back seat with suspension, console adjustment, head rest

Headrest for KAB 528P/C, T8P/C

Starting kit, cold weather

Stick: 2210 mm (7'3") 1665 mm (5'6")

2210 mm (7'3")

1665 mm (5'6")

Track shoes

Travel pedals

Water separator, fuel line

For more information, please contact your sales representative.