Milton CAT 450E User Manual
Engine
Engine Model (Standard) Cat®C4.4
Gross Power – SAE J1995 102 kW 137 hp
Net Power – SAE J1349 92 kW 124 hp
Weights
Operating Weight – Nominal 10 950 kg 24,141 lb
Operating Weight – Maximum 12 300 kg 27,115 lb
Backhoe
Dig Depth – Standard 5260 mm 17 ft 3 in
E-Stick Retracted 5260 mm 17 ft 3 in
E-Stick Extended 6501 mm 21 ft 4 in
450E
Backhoe Loader
®
®
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450E Backhoe Loader
Caterpillar®Backhoe Loaders set the industry standard for operator comfort, exceptional
performance, versatility and jobsite efficiency.
With pilot-operated joystick controls, a more
comfortable operator station, new extendible
stick design and increased performance, the
450E lets you get more done with less effort.
Additional Features
Product Link, combined function
hydraulics and work lights round out
the features. pg. 12
✔
Work Tools
A new hydraulic thumb is part of the
wide range of Cat®Work Tools that
are available to meet the needs of your
job site applications. All machines
are equipped with thumb mounting
brackets. pg. 11
Hydraulics
Caterpillar’s state-of-the-art closed-center
hydraulic system, variable displacement
piston pump and load-sensing hydraulics
improve implement response and speed
while still providing high forces at
any engine speed. New flow-sharing
hydraulic valves improve multi-function
performance. pg. 7
✔
Pilot Operated Joystick Controls
Pilot operated joystick controls are
easy to use, reduce operator fatigue and
increase efficiency. Auxiliary backhoe
hydraulic functions are operated with
convenient thumb roller controls. pg. 6
✔
Operator Station
The all-new operator station maximizes
operator comfort and productivity.
Easy to use machine controls keep
operator fatigue low and production
up throughout the workday. pg. 4
✔
✔ New Feature
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Serviceability and Customer Support
Easier maintenance results in greater
machine uptime and lower owning
and operating costs. New tilt-up hood
provides easier access to the engine
compartment, exposing all daily service
points. Your Cat dealer offers a wide
range of services that can be set up under
a Customer Support Agreement, such as
S•O•S and Scheduled Maintenance.
pg. 13
Backhoe and Loader Features
All new backhoe is designed for
increased performance with higher
digging and lifting forces. The new
extendible stick includes a new wear
pad design, providing increased life
and serviceability. The single-tilt loader
offers solid performance in bucket work
and material handling. pg. 10
✔
Ride Control
Standard Caterpillar Ride Control
provides a comfortable ride at all speeds,
both on the jobsite and on the highway.
System is designed to provide an
improved ride whether the bucket
is full or empty. pg. 9
Power Train
The Cat®C4.4 engine meets all
U.S. EPA Tier 3/EU Stage III emissions
requirements. The efficient fuel system
delivers reliable engine lug performance.
The transmission and new axles provide
increased roading speed. pg. 8
✔
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450E Deluxe Cab
The all-new operator station provides maximum comfort and ease of operation.
Operator Station
Operator Comfort. The all-new operator
station has been designed to maximize
operator comfort and productivity.
Pilot operated controls allow for
more legroom and a spacious work
environment.
New Styling. The new ergonomic,
automotive styling of the operator station
enhances the operator environment.
The narrow front dash provides excellent
visibility to the front bucket. Integrated
storage areas and cupholders are designed
for operator convenience.
Deluxe ROPS Canopy. Features of the
ROPS canopy include:
• Air suspension vinyl seat
• Tilt steering wheel
• Two 12-volt internal power supply
adapters
• 12-volt external power supply adapter
• Phone clip
• Lockable, left side storage
compartment
• Drink holders
• Floor mat
• Eight working lights
• Boosted brakes
• Individual auto-up feature on
stabilizer controls
• Rotating vandal guard
• System indicators for hydraulic filter
service and hydraulic temperature
warning
Deluxe Cab with Air Conditioning.
The standard cab features include:
• Air suspension fabric seat
• Tilt steering wheel
• Two 12-volt internal power supply
adapters
• 12-volt external power supply adapter
• Phone clip
• Lockable, left side storage
compartment
• Drink holders
• Floor mat
• Eight working lights
• Boosted brakes
• Individual auto-up feature on
stabilizer controls
• Two doors
• Front and rear windshield
• Wiper/washer system
• Radio-ready
• Dome light
• Deluxe, nine-way adjustable air
suspension seat
• System indicators for hydraulic filter
service and hydraulic temperature
warning
• Air conditioning
New Gauge Cluster. Operators can
easily view system information on the
new gauge cluster. Gauges are displayed
against a white background for good
visibility in different light conditions.
Ergonomic, tactile switches are simple
to understand.
Air Suspension Seat. The standard air
suspension seat utilizes an air adjustment
mechanism for a greater operating range
and more comfortable ride. A switch on
the seat post allows the seat to be tailored
to support differing body weights.
Adjustable seat height accommodates
all operators.
The deluxe cab air suspension seat also
has an adjustable back support, lumbar
support, seat cushion extension, seat
cushion tilt and vertical and angle
adjusting armrests.
HVAC System. The improved air
conditioning system features enhanced
air distribution and performance for a
more comfortable work environment.
Large capacity fresh air filter is easily
serviced from ground level with no
tools required. Nearly 20% increase
in air flow combined with improved
louver locations provide superior
operator comfort.
Storage Compartment. New lockable,
left side storage compartment is standard
on the 450E.
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Joystick Controls. Standard excavatorstyle joysticks provide smooth modulation
and are ergonomically designed for low
effort control and operator comfort.
Without the traditional, rear console,
they also provide increased legroom
and greater rearward viewing area.
Pilot Operated Stabilizer Controls.
Stabilizer controls are within easy
reach of the operator when operating the
backhoe and provide low effort and fine
modulation control. Each control has
automatic raising or “Auto-Up” feature
to speed the process for moving on.
Pilot Control Pods. Located on the left
and right sides, the controls can move
fore and aft and can be operated in
either position for maximum comfort.
Joystick Roller Switches. Thumb rollers
on the joysticks provide convenient,
fingertip control of auxiliary functions
for features such as the extendible stick,
hammers and augers. Roller switches
eliminate the need for foot pedals,
providing additional foot room for
the operator.
Pattern Selector Switch. The pattern
selector switch, located in the cab, allows
the operator to change from excavator
control pattern to backhoe loader control
pattern without leaving the seat.
Mechanical Controls. Four-lever
Dynahoe and 4-lever Ford style controls
remain available for operators with
those preferences. Foot pedals operate
additional functions such as extendible
stick and auxiliary lines.
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Pilot Operated Joystick Controls
Low effort, comfortable controls reduce fatigue and provide more legroom.
Load-Sensing Hydraulic System.
The variable displacement piston pump
and flow-sharing hydraulic valves
sense work demand and adjust flow
and pressure for increased productivity.
Load-sensing hydraulics deliver:
• Maximum lift and dig forces at any
engine RPM
• Cooler hydraulic system
• Better fuel efficiency
• Quieter operation
• Reduced wear on components
Hydraulic Pump. The variable
displacement piston pump improves
implement response and speed while
still providing high forces at any engine
speed. A supplemental gear pump
provides increased flow and
responsiveness.
Torque Limiter Control. The pump
torque limiter control manages
distribution of engine power to the
hydraulic system and drive train.
E-Series improvements produce more
aggressive backhoe digging and
stronger truck loading performance.
Flow-Sharing Hydraulic Valves.
Technology leveraged from Cat
Hydraulic Excavators, new flowsharing hydraulic valves automatically
distribute flow to optimize multifunction implement performance.
Closed-center implement valves signal
hydraulic system requirements to a
control valve located on the pump.
Clamps and Bushings. Metal clamps
with rubber bushings are used at hose
attachment points to eliminate metal-tometal contact and increase wear life.
Cat XT-3 ES ToughGuard™ Hoses.
Improved bend radius and abrasion
resistance provide reliable long life
in the toughest conditions. Made of
four overlapping, insulated wire spiral
wraps bonded together for durability,
Cat XT-3 ES (Enhanced Spiral)
ToughGuard hoses exceed SAE
certification standards. The hose routing
protects them from work damage, and
hose failure is substantially reduced.
Cat XT-3 ES ToughGuard hoses
combined with Cat couplings and O-ring
face seal fittings provide a leak-free
system. All backhoe hydraulic circuits
utilize the new ToughGuard hose with
extended wear characteristics.
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Hydraulics
Caterpillar sets the standard in power and precision with load-sensing hydraulics.
Cat C4.4 Diesel Engine. The Cat C4.4
engine meets all U.S. EPA Tier 3/
EU Stage III emissions requirements.
It delivers high horsepower, increased
torque rise and reliable power with low
emissions. It provides excellent fuel
economy and system durability.
Direct Injection Fuel System. Individual
unit fuel injectors deliver efficient and
accurate fuel metering and reduced
emissions. The water separator service
indicator ensures the operator is alerted
when service is necessary.
Enhanced Roading Speed. Maximum
roading speed has been increased to
40 km/h (25 mph) for faster travel
between jobsites.
Air Cleaner. A dry-type axial seal air
cleaner with automatic, integrated dust
ejection system provides more efficient
pre-separation. The two-stage air filter
incorporates both air cleaner and
precleaner functions into a single
unit mounted under the hood.
New Axles. New heavy-duty axles are
designed specifically for demanding
backhoe loader applications. Features
include outboard planetary gear sets and
brakes for serviceability and longer life.
Auto-Shift Transmission. The standard
automatic transmission matches gears
with grade and load conditions. Top gear
is selected with the twist grip control on
the steering column. At the touch of a
switch, manual mode gives the operator
control over gear selection, as a power
shift transmission.
Transmission Kick-Down Switch/
Neutralizer. Located on the loader
control, the kick-down switch allows
the operator to downshift through the
gears. When this switch is depressed
for more than one second, it serves as
the transmission neutralizer to maintain
engine and hydraulic speed when
truck loading.
Standard Four Wheel Drive (4WD).
Heavy-duty front drive axle can be
engaged at any time by activating the
switch on the front console. The switch
can be activated while the machine is
stopped or moving, with or without
load. 4WD features outboard planetary
gear final drives and improves mobility
and loader performance in poor traction
conditions.
Brake Mode Selector. The brake
mode selector switch has three positions:
two wheel drive, two wheel drive with
all wheel braking and all wheel drive.
Center position provides two wheel
drive for better tire life while roading
and engages the front axle when brakes
are applied for improved braking
performance.
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Power Train
The Cat®C4.4 engine is built for performance, power, reliability and fuel efficiency.
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