Milton CAT 307D User Manual

307D

Mini Hydraulic Excavator

Engine

Engine Model MMC 4M40-TL
Net Power 41.5 kW 55.6 hp
Gross Power 43 kW 57.6 hp

Weights

Operating Weight 7075 kg 15,598 lb

307D
Features

Comfortable Cab

Intuitive seat-mounted controls and a
spacious cab with an air suspension seat
keep you comfortable all day.

Versatility

Machine is configured to operate with a
wide selection of Cat® Work Tools increasing
jobsite versatility.

Performance

High digging forces and fast cycle times
maximize productivity without compromising
controllability.

Stability

Conventional tail swing design with extended
counterweight provides excellent stability
while maximizing lifting.

Contents

Operator Station . . . . . . . . . . . . . . . . . . . . .3

Performance . . . . . . . . . . . . . . . . . . . . . . . .4

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Work Tools . . . . . . . . . . . . . . . . . . . . . . . . . .5

Undercarriage . . . . . . . . . . . . . . . . . . . . . . .6

Serviceability. . . . . . . . . . . . . . . . . . . . . . . .7

Customer Support. . . . . . . . . . . . . . . . . . . .7

307D Specifications . . . . . . . . . . . . . . . . . .8

307D Standard and

Optional Equipment . . . . . . . . . . . . . . . . .11

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The Cat 307D Mini Hydraulic Excavator delivers superior
performance and comfort while reducing your operating
costs. The large spacious cab provides a comfortable
work area. Intuitive seat-mounted controls are easy to
use for greater job accuracy and efficiency. The standard
tail swing design incorporates a counterweight that
extends further back on the machine. This provides
leverage to create a stable work platform during lifting
and digging. The 307D sets the standard for conventional
tail swing excavators in the eight-ton size class.

Operator Station

Simple, easy operation allows the operator to focus on production.

A larger, spacious cab provides operator comfort and improved
visibility. Joystick controlled auxiliary switch clears space
on the fl oor giving the operator plenty of foot and leg room.
An intuitive cab layout for ease of operation reduces operator
fatigue. Other cab features include:

• Air conditioning is standard.

• 12V power receptacle for charging cell phones.

• A reclining air suspension seat with adjustable armrests.

• Storage space for literature and cup holder.

• Low effort joystick controls designed to match the operator’s
natural wrist and arm positions.

• Consoles can be adjusted independently of the seat for
maximum comfort.

• Overhead skylight improves visibility and can be opened
to create air fl ow.

• Upper front windshield opens and easily stores on the roof
above the operator with an automatic latching mechanism.

• All functions are fully pilot operated lowering owning and
operating costs.

• Pattern control changer is located under the fl oor mat.

Monitor Display

Newly designed monitor is located to give a clear view of
the machine’s monitoring system, ensuring fuel level, water
temperature and warning lights are easily seen.

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Performance

Powerful digging with precise control.

Hydraulics

Smooth responsive hydraulics give the level of control demanded by the
customer in any application, from fi ne grading and dozing to backfi lling.
Powerful bucket and stick digging forces combined with fast cycle times result
in world class productivity and performance. Automatic two speed function
improves jobsite maneuverability with precise control by balancing travel
speed with the torque needed for turning and travelling on inclines. Dozer blade
fl oat function enables easy ground levelling for landscaping and fi nish grade
applications as well as more effi cient jobsite clean-up.

Controls

Joystick mounted auxiliary control enhances machine controllability. Intuitive
controls give fi ne modulation. The levers and dozer function ensure “as new”
levels of controllability are maintained throughout the machine life.

Lift Capacity

The new Caterpillar D-Series has industry leading lift capacity matched with
outstanding stability. This provides the control required to meet the diverse
and continually changing needs of the customer.

Stick and Boom

A choice of standard or long, thumb ready sticks enable the customer to match
the machine’s digging envelope to their requirements. A fi xed boom is featured
to maximize stability and lifting.

Engine

Clean, quiet and effi cient.

• Interim Tier 4 turbocharged engine
gives higher power and maintains strong
performance at high altitude.

• High digging forces give power through
even the most compacted ground with
smooth control and responsive hydraulics
that deliver productivity that our customers
demand.

• Load sensing hydraulics optimize the fl ow
of oil for smooth powerful performance
and increased fuel economy.

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

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