Milton CAT 305.5E CR User Manual

303.5E CR, 304E CR,
305E CR, 305.5E CR

Mini Hydraulic Excavators

303.5E CR 304E CR 305E CR 305.5E CR

Engine

Engine Model Cat
Net Power (ISO 9249) 23.6 kW (31.6 hp) 30 kW (40.2 hp) 30 kW (40.2 hp) 32.9 kW (44.2 hp)

Weights

Operating Weight with Canopy 3508 kg (7,734 lb) 3854 kg (8,497 lb) 4915 kg (10,836 lb) 5270 kg (11,618 lb)
Operating Weight with Cab 3692 kg (8,139 lb) 4009 kg (8,838 lb) 5088 kg (11,217 lb) 5415 kg (11,938 lb)

Operating Specifications

Maximum Dig Depth 3180 mm (10'4") 3430 mm (11'3") 3670 mm (12'1") 3870 mm (12'8")

®

C1.8 Cat® C2.4 Cat® C2.4 Cat® C2.4

High
performance
in compact
sizes to
increase your
productivity in
the tightest of
applications.

Contents

Operator Station..................................................4

Performance ........................................................5

Engine ...................................................................5

COMPASS Control Panel ...................................6

Compact Radius, Zero Tail Swing .....................8

Dozer Blade........................................................10

Coupler and Work Tool Options ......................11

Serviceability .....................................................12

Speci cations ....................................................14

Standard Equipment.........................................20

Optional Equipment...........................................21

2

The Cat® ESeries Mini Hydraulic Excavators deliver high performance in a compact size to help you work in the tightest
applications. All four models feature a large, integrated counterweight and excellent stability while maintaining a
compact radius design. With the new COMPASS control panel, the ESeries has new standard features like a password
protected security system, Eco mode, adjustable auxiliary ow control, and continuous ow. These new features make
the machines more productive, versatile, and cost effective.

3

Operator Station

Superior comfort to keep you productive
throughout the work day

Comfortable Working Environment

Spacious and comfortable operator station with excellent
visibility and legroom keeps the operator comfortable
andreduces fatigue. Standard features include:

• Reclining suspension seat with adjustable wrist rests.

• Pilot operated controls on all services including travel levers
and dozer functions.

• A pattern control changer (not available in all regions)
is accessible from the cab to switch between excavator
andbackhoe style controls.

• Ample storage space under the seat that can be locked
foradded security.

Joystick Controls

The boom swing and auxiliary hydraulic functions
are located at your  ngertips providing smooth, easy
operation. They also eliminate foot pedals and free up
the  oor for more room for the operator’s feet. 100%
pilot controls provide consistent  ow and pressure
throughout the life of the machine. This also allows all
controls to be locked out while starting the machine.

4

Stability

All four ESeries models feature excellent stability while
maintaining the compact radius design. This increased stability
leads to more productivity and versatility through the use of
heavier work tools and the optional long stick.

Fast, Powerful Digging with Load Sensing Hydraulics

High digging forces and fast cycle times deliver the productivity
that your job demands. Load sensing hydraulics optimize ow for
smooth, powerful performance and increased fuel efciency.

200 Degree Bucket Rotation

Industry leading bucket rotation of over 200 degrees provides
greater material retention during truck loading.

Performance

Powerful digging with precise control

It also allows for easier vertical wall digging without having to
reposition the machine.

Engine

High performance power train provides optimized
engine horsepower and strong performance

Automatic engine idle automatically lowers engine
revolutions when not in use to conserve fuel and lower
environmental noise and emissions.

Automatic Two Speed

With the standard automatic two speed feature, the
machine will automatically balance high speed and
torque travel requirements based on the conditions
to give the operator the optimum speed and control.
The machine can be put in low gear if slower travel
isdesired while in tight conditions.

5

COMPASS Control Panel

Complete, Operational, Maintenance, Performance and Security System

The brand new COMPASS control panel on the Cat® ESeries mini
hydraulic excavators was specically designed by Caterpillar for
compact excavators. It adds several new features to the machines
increasing the amount of customer value. All of the following features
are now standard onall ve of the new ESeries models.

Complete – All of the control panel features are standard on all ve

ofthe new ESeries models

Operation – Simple operation of the pattern changer, hydraulic quick

coupler and fuel gauge visibility all at the push of a button

Maintenance – Maintenance intervals, diagnostics and work hours

Performance – Save up to 20% fuel while maintaining optimum

performancelevels

And

Security – Anti theft device with individual user and master

passwords

System – Ergonomically designed control panel

Passcode Protected Security System

A standard anti-theft device now comes on every ESeries compact
excavator. A ve digit alphanumeric password is required to start the
machine when the anti-theft feature is enabled. There is a master
password and up to ve user passwords can be created by the
ownerif desired.

Keep your machine safe on a busy job site by locking it when you
arenotaround

Adjustable Auxiliary Work Tool Flow Control

The ESeries machines now have simple adjustability of the ow
going down the boom and stick to the work tool. Both the standard
main line and optional secondary auxiliary hydraulics can be adjusted
on a scale of 1–15 through afew buttons on the control panel.

Adjust the ow to your different tools with a simple push of a button

6

UNLOCK the new features and experience the
value of the exclusive COMPASS control panel
onthe new ESeries compact excavators

Economy Mode

This feature allows your machine to be set in a more economical
power setting with a simple push of a button. While operating in
this mode, the machine will maintain excellent performance levels
while saving up to 20%fuel through a slightly lower engine setting.

Save money with the new ESeries compact excavators

Continuous Flow

Once this feature is enabled through a button on the monitor, the
new ESeries machines can run in continuous ow mode. With the
auxiliary hydraulics on the right hand joystick, just hold the roller
switch at the desired ow rate and direction for 2.5 seconds and
the machine will maintain that ow rate until it is turned off.

Maintain hydraulic ow to your tools at any ow and in any
direction withthe simple push of a button

Pattern Changer

Change the operating pattern between excavator and backhoe
with asimplepress of a button from the comfort of the cab.

Exclusive push button pattern changer is safe and easy

Maintenance and Performance Information

Easily keep track of various maintenance and performance
parameters ofyour machine.

Reset the maintenance intervals and ensure the machine is
receiving proper care maximizing the life of the machine

7

Compact Radius, Zero Tail Swing

Work in the tightest areas

Compact Radius

The compact radius design gives greater machine versatility and the
capability to work within conned areas. This allows the operator to
concentrate on the work being done without having to worry about
damaging the back of the machine or other job site obstacles. On the
305E CR and the 305.5E CR, the upper body stays within 140 mm (5.5 in)
ofthe undercarriage.

Zero Tail Swing

New to the E Series, the 303.5E CR and the 304E CR models feature a zero
tail swing design. On these models, the radius of the upper body stays
entirely within the width of the undercarriage.

8