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Caterpillar MINI HYDRAULIC EXCAVATOR 303.5E - catalog of spare parts

 

Cat 303.5E CR provides high performance in a compact package that allows you to work in the most difficult conditions. Boom swing and auxiliary hydraulic functions are at your fingertips, ensuring smooth and easy handling. These controls, which are mounted on the joystick, provide better performance due to precise boom swinging and auxiliary functions. They also eliminate foot pedals and free the floor for more legroom for the operator. 100% pilot control ensures constant flow and pressure throughout the life of the machine. It also allows you to lock all controls when starting the machine and when the safety lock bar is in the up position.

Choose MINI HYDRAULIC EXCAVATOR 303.5E section:

3B8488 Cat Grease Fitting Caterpillar View
8T0286 Bolt Caterpillar View
8T4176 Track Bolt Caterpillar View
4J0524 Oring Caterpillar View
1761902 Dryer Refrigerant Caterpillar View
0951390 Standard Clamp Caterpillar View
6V0484 Adapter Caterpillar View
6T3632 Lockwasher Caterpillar View
7X2621 Hex Head Bolts, Zinc Flake Caterpillar View
9X8488 Nut Hex Thin Caterpillar View
2462641 Padlock Gp Caterpillar View
6V9851 Cat Elbow Adapter Caterpillar View
1017404 Bolt Socket Head Caterpillar View
1028802 Kit Receptacle Caterpillar View
6V7357 Hex Head Bolts, Zinc Flake Caterpillar View
1M6119 Battery Terminal Bolt Caterpillar View
4D7733 Clip Caterpillar View
6F7037 Hex Head Bolts, Phosphate and Oil Coated Caterpillar View
4K1388 Oring Caterpillar View
8T4137 Track Bolt Caterpillar View
1274839 Bolt Caterpillar View
1106109 Knob Control Caterpillar View
6V8628 Elbow Caterpillar View
1073134 Housing Connector Caterpillar View
4I3144 Washer Hard Caterpillar View
7Y3173 Screw Button Head Caterpillar View
1745907 Clip Caterpillar View
8E6208 Pin Caterpillar View
1588284 Plug Caterpillar View
1178929 Washer Caterpillar View
6V8780 Tee Face Seal Caterpillar View
1612539 Alarm As Caterpillar View
8T4189 Hex Head Bolts, Zinc Flake Caterpillar View
2462622 Elbow As Caterpillar View
7Y1976 Hose Water Caterpillar View
8T7547 Hex Head Bolts, Zinc Flake Caterpillar View
3S2093 Cable Straps Caterpillar View
8T3490 Nut Weld Caterpillar View
7X2537 Hex Head Bolts, Zinc Flake Caterpillar View
1542704 Plate Instruction Caterpillar View
1327551 Spacer Caterpillar View
1612561 Cap Dust Caterpillar View
3B5322 Cotter Pins Caterpillar View
8T4971 Hex Head Bolts, Zinc Flake Caterpillar View
5P2369 Clip Caterpillar View
8C3309 Tee Caterpillar View
2S0736 Washer Hard Caterpillar View
5P5969 Seal Caterpillar View
4K8302 Clip Caterpillar View
0961366 Standard Clamp Caterpillar View
8T0076 Connector Caterpillar View
8T4648 Track Bolt Caterpillar View
9X2133 Hose Caterpillar View
1272170 Screw Truss Head Caterpillar View
6V9200 Elbow Caterpillar View
8T0288 Bolt Caterpillar View
4D8123 Clip Caterpillar View
1257874 Tube Heat Shrink Caterpillar View
1506766 Plug As Connector Caterpillar View
8T4198 Hex Head Bolts, Zinc Flake Caterpillar View

CONVENIENT WORKING ENVIRONMENT

A spacious and comfortable operator`s station with excellent visibility and legroom ensures operator comfort and reduces fatigue. Standard features include:

  • Folding seat with suspension and adjustable wrist rests.

  • The pilot managed all services, including leverage and bulldozer functions.

  • Two-column design for a better view of the working area.

  • From the cab, you can access the circuit control device (not available in all regions) to switch between the controls of the excavator and the excavator.

  • Enough storage space under the seat that can be locked for extra security.

OPTIONAL CLOSED

For even greater operator comfort, an enclosed cab is available as an option:

  • Closed cabin with heating and additional air conditioning to make you feel comfortable in a variety of conditions.

  • The radio is ready with speakers and simple radio installation.

  • Removable lower front glass and sliding windows for excellent overall visibility.

  • Windshield with gas support rises with minimal effort.

  • The sliding door system provides good access and maintains the compact size of the machine, reducing the risk of damage.

COMPASS PANEL

Discover new features and experience the benefits of the COMPASS exclusive control panel on the new E-series excavators. The Caterpillar E-Series C-series E-Series mini-hydraulic excavator system has been completely developed for compact excavators. This adds several new features to the machines, increasing the cost of the client:

  • Standard anti-theft security system

  • Adjustable auxiliary flowmeter control for working tools

  • Continuous flow

  • Economy mode - fuel savings of up to 20% while maintaining high performance at the touch of a button.

 

STABILITY

All four models of the E series are characterized by increased stability while maintaining a compact radius. This increased stability results in greater productivity and versatility thanks to the use of heavier working tools and an extra long handle.

FAST, POWERFUL SHIP WITH HYDRAULIC SENSOR

High digging power and short cycle times provide the performance you need for your work. Load-sensing hydraulics optimize flow for smooth, powerful performance and increased fuel efficiency.

ENGINE

High-performance powertrain provides optimized engine power and high performance. The engine complies with US EPA Tier 4 Interim and EU Stage IIIA. Automatic engine idling automatically reduces engine speed when not in use, to save fuel and reduce noise and emissions to the environment. E-Series models are equipped with an engine shut-off switch that is conveniently located in the cab and is accessible from ground level.

AUTOMATIC TWO SPEEDS

Thanks to the standard automatic 2-speed function, the machine automatically balances the requirements for high speed and torque movement depending on the conditions in order to provide the operator with optimal speed and control. The car can be turned on in a low gear if a slower stroke is required in confined spaces.

ROTATION BUCKET 200 DEGREE

Industry-leading bucket rotation of more than 200 degrees provides greater material retention during loading. It also makes it easier to dig vertical walls without having to re-arrange the machine.

ZERO TAIL SWING

303.5E CR has a swing design with zero tail. On these models, the radius of the upper part of the body remains completely within the width of the chassis.

COUPLINGS

The E Series comes with a mechanical grip or hydraulic quick disconnect option. The design of the connector uses a wedge to hold the tool on the connector, reduce wear and maintain a tight fit throughout the life of the connector. The hydraulic coupling allows the operator to change tools without leaving the cab.

Wide range of working tools

A wide range of Cat working tools has been specifically designed for Cat mini excavators for maximum machine productivity. Available work tools include:

  • Buckets (heavy and heavy)

  • Tilt, Ditch Cleaning Buckets

  • Hydraulic Hammers

  • Augers

  • Thumbs up (not available in all regions)

  • Vibratory rollers

  • Quick coupling

STANDARD HEAD HEADS (HEAD IN EUROPE)

The machines come standard with brackets mounted on the handle and are ready to install a thumb hydraulic system for even greater machine versatility. A factory mounted bracket and safety valve make thumb installation easy and economical.

STANDARD AUXILIARY LINES AND BATTERY

Single-sided and double-sided auxiliary lines (combined function), including quick connections, are installed as standard equipment, so the machine is ready for operation. A standard battery allows you to relieve auxiliary pressure, making connecting and disconnecting working tools safer and easier.

Easy bulldozer control with the FLOAT feature

The function of the bulldozer is controlled by the pilot from the cockpit, ensuring smooth, proportional operation. The standard float function is activated by pushing the lever fully forward to the locked position. Cleaning and backfilling is easier because the operator does not need to adjust the height of the blade during movement.

EXCELLENT VISIBILITY OF BLADE

Blade visibility is excellent in any position, allowing the blade to be positioned behind the operator and away from the front linkage for better access when tightening the back and finishing in hard to reach places.

VARIANT OF ANGULAR BLADE

Increase machine versatility with the Cat dozer. Designed for strength and durability, the hydraulic corner knife has a wear-resistant edge made of hardened steel and good protection against cylinders and hydraulic lines. The corner knife can be positioned straight forward or at an angle of up to 25 degrees left or right. This reduces the number of times needed for backing up and moving backfilling so that you can complete your work faster. All blade functions are controlled by a single joystick using a proportional roller switch for the angle function.

RUBBER TRACK

The standard rubber track allows you to work on several surfaces, such as grass, pavement or stone, without damaging the surface or the machine.

OPTION STEEL ROAD

An optional steel track is available for tough conditions such as demolition. The extra weight of steel tracks usually provides better stability when digging on the side of the machine.

RUBBER PILLOWS

Additional rubber gaskets can be attached to the steel rail to prevent damage to paved surfaces and to minimize noise and vibration during movement using a steel rail system. This option provides maximum overall stability.

EASY SERVICE

Convenient service functions simplify maintenance and reduce downtime:

  • The lift side cover provides access to the air filter, the main body valve, the 1-way / 2-way auxiliary flow selector, the accumulator, the fuel filter and the hydraulic reservoir. This eliminates the need to raise the cab when servicing and maintaining the machine.

  • A hinged rear door provides access to major components and service points, including checking and filling up engine oil, a vertically mounted engine oil filter, a starter motor and a generator.

  • Easy access to the radiator and the oil cooler simplifies cleaning and reduces maintenance time.

  • The SOSSM sampling valve allows easy removal of hydraulic fluid for preventative maintenance.

  • 500 hours of changing the engine oil and filter reduces maintenance and downtime.

SUPER DEALERS SERVICES

Your Cat dealer is ready to help you make a purchasing decision and everything after.

 

  • Financing packages are flexible to suit your needs.

  • Unrivaled parts availability allows you to work.

  • Make comparisons of machines, with estimates of component life, preventive maintenance and cost of production.

  • Your Cat dealer can estimate the cost of repairing, restoring, and replacing your machine.

ENGINE

Engine Model

Cat® C1.8

Net Power

31.6 HP

Gross Power

33.3 HP

WEIGHTS

Operating Weight

7734.0 lb

Operating Weight - With Cab

8139.0 lb

DIMENSIONS

Maximum Digging Depth - Standard Stick

9.6 ft

Maximum Reach - Ground Level - Standard Stick

16.7 ft

Height - Over Cab

8.2 ft

Maximum Cutting Height - Long Stick

16.5 ft

Maximum Cutting Height - Standard Stick

16.2 ft

Maximum Dump Height - Long Stick

11.9 ft

Maximum Dump Height - Standard Stick

11.5 ft

Maximum Horizontal Reach - Long Stick

17.8 ft

Maximum Horizontal Reach - Standard Stick

17.1 ft

Maximum Vertical Dig Depth - Long Stick

8.2 ft

Maximum Vertical Dig Depth - Standard Stick

7.7 ft

Shipping Height

8.2 ft

Shipping Length

15.5 ft

Track Shoe Width

1.0 ft

Transport Width

5.8 ft

ENGINE DIMENSIONS

Bore

3.4 in

Stroke

4.0 in

Displacement

110.0 in³

TRAVEL SYSTEM

Maximum Traction Force - High Speed

3799.0 lb

Maximum Traction Force - Low Speed

6969.0 lb

Travel Speed - High

2.8 mile/h

Travel Speed - Low

1.6 mile/h

HYDRAULIC SYSTEM

Operating Pressure - Equipment

3553.0 psi

Digging Force - Stick - Standard

4249.0 lb

Digging Force - Stick - Long

3799.0 lb

Digging Force - Bucket

7419.0 lb

Operating Pressure - Travel

3553.0 psi

Operating Pressure - Swing

2625.0 psi

Auxiliary Circuit - Primary

15.9 gal/min

Auxiliary Circuit - Secondary

7.1 gal/min

SWING SYSTEM

Machine Swing Speed

9.0 r/min

Boom Swing - Left - Without Stop

80.0 °

Boom Swing - Left - With Stop

55.0 °

Boom Swing - Right

50.0 °

BLADE

Width

70.0 in

Height

12.8 in

Dig Depth

18.5 in

Lift Height

15.7 in

SERVICE REFILL CAPACITIES

Cooling System

1.5 gal (US)

Engine Oil

1.8 gal (US)

Hydraulic Tank

11.2 gal (US)

Fuel Tank

12.2 gal (US)

Hydraulic System

17.2 gal (US)

MSC COMMENTS

 

MSC Spec Date

3/06