Detailed instructions for use are in the User's Guide.
[. . . ] OperatorEnvironment The new four post ROPS cab provides enhanced comfort, visibility, and productivity resulting in a more efficient operator. [. . . ] OperatorEnvironment The new four post ROPS cab provides enhanced comfort, visibility, and productivity resulting in a more efficient operator. New features include an ergonomic electro-hydraulic (EH) joystick steering system with force feedback (speed sensitive), automatic climate control, viscous mounts to reduce noise and vibration levels, post mounted membrane switches, and a curved windshield giving the operator a panoramic view. Cat®C9. 3ACERTTMEngine The innovative Cat C9. 3 ACERT engine is optimized for maximum fuel efficiency and increased power density while meeting all Tier 4 Interim and Stage IIIB emissions requirements. Thereliability, durability, andversatilityoftheMD5125 resultinamachinethatisbetterbuilttomeetyour needs. Allday. Everyday.
Reliability
Structures
Tested
and
Proven.
Ready
to
Work.
The
K
SeriesTM
features
many
of
the
components
designed
and proven
reliable
over
generations
of
product
design.
StrataPrecleaner
The
system
removes
93%
of
the
dust
particles
before
the
air
has
reached
the
primary
engine
air
filter.
As
air
enters
the precleaner,
stationary
vanes
cause
the
incoming
air
to
spin.
The resulting
centrifugal
force
spins
dust
and
dirt
to
the
outer
walls
where
they
are
ejected
out
into
the
exhaust
stream,
while
the
clean
air
flows
down
the
center
of
the
tube
and
continues
into
the
primary
air
filter.
The
primary
benefit
is
extended
filter
life.
ColdStart/HighAltitudePackage
A
new
optional
cold
start
package
includes
a
fan
pump
bypass,
transmission
pump
bypass,
additional
battery
capacity,
and
an
engine
heater
plug/cord.
The
bypass
systems
reduce
the
parasitic
load
on
the
engine,
while
the
additional
battery
capacity
increases
the
cold
cranking
revolutions
during
startup.
With
the
new
optional
cold start
package
available
on
K
Series,
starting
capability
has been
dramatically
improved
in
cold
weather
conditions.
The system
also
improves
starting
capability
at
high
altitudes.
MonitoringPrograms
Monitoring
product
health
is
key
to
maintaining
reliability
of
any
equipment.
Many
programs
offered
by
Caterpillar
make
the
tracking
of
the
customer's
machine
health
quick
and
easy.
These
programs
include
Product
Link,
VisionLinkTM,
and
S·O·SSM
Services.
RenownedCatDealerSupport
From
helping
you
choose
the
right
machine
to
knowledgeable
support,
Cat
dealers
provide
the
best
when
it
comes
to
sales
and
service.
Manage
costs
with
preventive
maintenance
programs
like
Scheduled
Oil
Sampling
(S·O·SSM)
analysis
or elaborate
Customer
Support
Agreements.
Stay
productive
with
bestinclass
parts
availability.
Cat
dealers
can
even
help
you
with
operator
training
to
help
boost
your
profits.
And when
it's
time
for
machine
rebuild,
your
Cat
dealer
can
help
you
save
even
more
with
Genuine
Cat
Reman
parts.
Receive
the
same
warranty
and
reliability
as
new
products
at cost
savings
of
40
to
70
percent
for
power
train
and
hydraulic
components.
3
Durability
Better
Built
to
Meet
Your
Needs
Frames
The
robotically
welded
twopiece
structural
frame
design
provides
a
rugged
and
reliable
foundation
for
the
machine
that
improves
stability,
performance,
and
serviceability.
A robust
articulating
hitch
system
joins
the
front
and
rear
frames
improving
durability.
Enhanced
lines
routings
across
the
hitch
joint
streamline
the
manufacturing
process
and
improve
reliability
and
durability.
Engine
The
new
Cat
C9. 3
ACERT
engine
was
designed
to
optimize
power
density.
It
uses
a
combination
of
technologies
to
reduce
regulated
emissions
while
ensuring
high
performance
and
excellent
fuel
efficiency.
An
upgraded
ADEMTM
4
electronic
control
module
manages
the
combustion
process
and
a
new
highpressure
common
rail
fuel
system
allows
precise
injection
timing
for
a
clean,
efficient
fuel
burn.
The rugged
Cat
Clean
Emissions
Module
is
securely
mounted
on
its
own
platform
above
the
engine
and
contains
a
Diesel
Oxidation
Catalyst,
Diesel
Particulate
Filter
and
Cat
Regeneration
System.
Regeneration,
the
process
by
which
soot
is
removed
from
the
Diesel
Particulate
Filter,
is
completely
automatic
and
does
not
interrupt
the
machine's
work
cycle.
Emissions
The
MD5125
features
a
Cat
C9. 3
ACERT
engine
and
a
Cat Clean
Emissions
Module
to
deliver
the
performance
and efficiency
that
customers
demand,
while
meeting
U. S. EPA
Tier
4
Interim/EU
Stage
IIIB
emissions
requirements.
The
sixcylinder
electronic
engine
is
turbocharged
and
aftercooled.
The
displacement
produces
better
lugging
capability,
lower
internal
stresses
and
longer
component
life.
ACERTTM
Technology
is
a
combination
of
building
blocks
that
includes
electronics,
fuel
systems,
air
management
systems
and
aftertreatment
components.
The
system
is
optimized
based
on
engine
size,
the
type
of
application
and
the
geographic
location
in
which
it
will
work.
The
technologies
are
applied
systematically
and
strategically
to
meet
high
customer
expectations
for
productivity,
fuel
efficiency,
reliability
and service
life.
Axles
The
MD5125
axles
are
designed
to
handle
extreme
applications
resulting
in
reliable
performance
and
extended
life.
The
front
axle
is
rigidly
mounted
to
the
frame
in
order
to
withstand
internal
torque
loads
and
still
maintain
support
for
the
wheel
loader.
The
rear
axle
can
oscillate
to
±13
degrees
helping
to
ensure
all
four
wheels
stay
on
the
ground
providing
stability
even
in
the
roughest
terrain.
4
Productivity
Z-barLinkage
Move
More.
All
Day.
Every
Day.
The
proven
Zbar
linkage
with
Performance
Series
Buckets
offer
excellent
penetration
into
the
pile,
high
breakout
forces,
good
roll
back
angles,
and
faster
dig
times.
The
results
are
improved
tire
life,
superior
fuel
efficiency,
and
exceptional
production
capabilities;
all
helping
to
enable
a sustainable
solution
for
your
business.
LoadSensingHydraulics
Load
sensing
hydraulics
produce
flow
and
pressure
for
the
implement
system
upon
demand
and
only
in
amounts
necessary
to
perform
the
needed
work
functions,
enhancing
machine
productivity
and
fuel
efficiency.
Implement
controllability
is
improved
through
simultaneous
implement
operation
and
repeatable
fine
modulation,
enabling
greater
operator
comfort
through
ease
of operation.
RideControl
Ride
control
provides
the
operator
with
a
smoother
ride
over
rough
terrain,
enabling
a
more
comfortable
ride
at
higher
speeds.
The
benefit
is
reduced
cycle
times,
higher
productivity
and
better
fuel
efficiency
while
performing
load
and
carry
applications.
The
system
works
by
using
an
accumulator
to
dampen
the
linkage
motion,
acting
as
a
shock
absorber.
TorqueConverter
The
MD5125
torque
converter
is
optimized
to
improve
fuel
efficiency
and
deliver
more
power
to
the
ground.
Transmission
The
K
series
transmissions
incorporate
a
new
clutch
disc
material,
which
enables
a
new
shifting
strategy
that
delivers
smoother
shifts,
faster
acceleration,
and
better
performance
climbing
a
grade.
With
the
further
enhancement
to
a torque
based
2
to
1
downshift,
owners
and
operators
will
fully
benefit
from
utilizing
the
automatic
14
transmission
mode;
which
results
in
lower
fuel
consumption
and
optimal
machine
performance.
5
Versatility
Work
Tool
Options
to
Meet
Your
Needs
WorkToolsforManyJobSiteRequirements
An
extensive
range
of
work
tools
and
bucket
styles
are
available
for
the
MD5125
to
customize
the
machine
for
your
operation.
The
list
includes:
Performance
Series
Buckets;
Specialty
Buckets
(Multipurpose,
Side
Dump,
Waste
Handling,
Woodchip);
Pallet
Forks,
Log
and
Lumber
Forks,
Rakes
(with
or
without
top
clamps);
and
Plows
(angle or
Vstyle).
Each
is
available
either
with
pin
on
or
quick
coupler interface.
PerformanceSeriesBuckets: LoadEasy, FuelEfficient, CarryMore
Performance
Series
Buckets
utilize
a
systembased
approach
to
balance
bucket
shape
with
the
machine's
linkage,
weight,
lift
and
tilt
capacities.
Operators
benefit
from
reduced
dig
times
and
better
material
retention;
ultimately
translating
into
significant
productivity
and
fuel
efficiency
improvements.
LowerOperatingCosts
Performance
Series
Buckets
feature
a
longer
floor
that
easily
digs
through
the
pile
and
provides
excellent
visibility
for
the
operators
to
see
when
the
bucket
is
full.
Less
time
digging
in
the
pile
results
in
lower
fuel
consumption
and
improved
tire
life.
A
unique
spill
guard
protects
the
cab
and
linkage
components
from
material
overflow.
HigherProductivity
Performance
Series
Buckets
achieve
higher
fill
factors
ranging
from
100%
to
115%
depending
on
the
machine
application
and
material
type.
The
buckets
feature
optimized
geometry
with
a
bucket
opening
matched
to
the
machine's
linkage
and
incorporate
a
curved
side
profile
to
maximize
material
retention.
The
optimized
design
results
in
unsurpassed
production
capabilities.
PerformanceSeriesBucketStyles
Performance
Series
Buckets
are
available
for
General
Purpose,
Material
Handling,
Rock,
Heavy
Duty
Rock
and Coal
style
buckets.
6
Fusion
Quick
Coupler
ImprovedMachinePerformance
FusionTM
is
the
patented
wheel
loader
coupler
system
from
Caterpillar.
The
Fusion
Coupler
System
provides
performance
virtually
identical
to
pin
on
with
all
the
flexibility
of
a
quick
coupler
system.
The
Fusion
Coupler
sits
back,
closein
to
the
loader
arms
minimizing
offset
and increasing
the
machine's
performance.
NoLossofPerformance
Imagine
lifting
a
hundred
pound
box
with
your
arms
fully
extended.
Now
imagine
lifting
that
same
load
close
to
your
body.
That's
the
genius
of
Fusion:
designed
to
integrate
the
work
tool
and
the
machine
by
pulling
the
coupler
and
tool
closer
in
to
the
loader.
As
a
result,
the
center
of
gravity
is
moved
inward,
towards
the
machine.
This
translates
to
increased
lifting
ability
when
compared
to
machines
equipped
with
other
coupler
systems.
UnsurpassedDurability
An
advanced
wedging
mechanism
creates
a
tight,
rattle free
fit.
This
patented
lock
up
system
eliminates
play
and
wear
resulting
in
a
long
service
life.
Wedges
pull
the
attachment
tight
to
the
machine
in
two
directions
in
and
down.
Constant
hydraulic
pressure
on
the
coupler
wedges
compensate
for
wear,
assuring
a
tight
fit
through
the
life
of
the
coupler.
Tight
fit
gives
better
tool
control
and
increased
productivity.
Coupler
durability
is
substantially
increased
over
traditional
couplers.
FusionTM eliminates coupler offset. . . [. . . ] Thereliability, durability, andversatilityoftheMD5125 resultinamachinethatisbetterbuilttomeetyour needs. Allday. Everyday.
Reliability
Structures
Tested
and
Proven.
Ready
to
Work.
The
K
SeriesTM
features
many
of
the
components
designed
and proven
reliable
over
generations
of
product
design.
StrataPrecleaner
The
system
removes
93%
of
the
dust
particles
before
the
air
has
reached
the
primary
engine
air
filter.
As
air
enters
the precleaner,
stationary
vanes
cause
the
incoming
air
to
spin.
The resulting
centrifugal
force
spins
dust
and
dirt
to
the
outer
walls
where
they
are
ejected
out
into
the
exhaust
stream,
while
the
clean
air
flows
down
the
center
of
the
tube
and
continues
into
the
primary
air
filter.
The
primary
benefit
is
extended
filter
life.
ColdStart/HighAltitudePackage
A
new
optional
cold
start
package
includes
a
fan
pump
bypass,
transmission
pump
bypass,
additional
battery
capacity,
and
an
engine
heater
plug/cord.
The
bypass
systems
reduce
the
parasitic
load
on
the
engine,
while
the
additional
battery
capacity
increases
the
cold
cranking
revolutions
during
startup.
With
the
new
optional
cold start
package
available
on
K
Series,
starting
capability
has been
dramatically
improved
in
cold
weather
conditions.
The system
also
improves
starting
capability
at
high
altitudes.
MonitoringPrograms
Monitoring
product
health
is
key
to
maintaining
reliability
of
any
equipment.
Many
programs
offered
by
Caterpillar
make
the
tracking
of
the
customer's
machine
health
quick
and
easy.
These
programs
include
Product
Link,
VisionLinkTM,
and
S·O·SSM
Services.
RenownedCatDealerSupport
From
helping
you
choose
the
right
machine
to
knowledgeable
support,
Cat
dealers
provide
the
best
when
it
comes
to
sales
and
service.
Manage
costs
with
preventive
maintenance
programs
like
Scheduled
Oil
Sampling
(S·O·SSM)
analysis
or elaborate
Customer
Support
Agreements.
Stay
productive
with
bestinclass
parts
availability.
Cat
dealers
can
even
help
you
with
operator
training
to
help
boost
your
profits.
And when
it's
time
for
machine
rebuild,
your
Cat
dealer
can
help
you
save
even
more
with
Genuine
Cat
Reman
parts.
Receive
the
same
warranty
and
reliability
as
new
products
at cost
savings
of
40
to
70
percent
for
power
train
and
hydraulic
components.
3
Durability
Better
Built
to
Meet
Your
Needs
Frames
The
robotically
welded
twopiece
structural
frame
design
provides
a
rugged
and
reliable
foundation
for
the
machine
that
improves
stability,
performance,
and
serviceability.
A robust
articulating
hitch
system
joins
the
front
and
rear
frames
improving
durability.
Enhanced
lines
routings
across
the
hitch
joint
streamline
the
manufacturing
process
and
improve
reliability
and
durability.
Engine
The
new
Cat
C9. 3
ACERT
engine
was
designed
to
optimize
power
density.
It
uses
a
combination
of
technologies
to
reduce
regulated
emissions
while
ensuring
high
performance
and
excellent
fuel
efficiency.
An
upgraded
ADEMTM
4
electronic
control
module
manages
the
combustion
process
and
a
new
highpressure
common
rail
fuel
system
allows
precise
injection
timing
for
a
clean,
efficient
fuel
burn.
The rugged
Cat
Clean
Emissions
Module
is
securely
mounted
on
its
own
platform
above
the
engine
and
contains
a
Diesel
Oxidation
Catalyst,
Diesel
Particulate
Filter
and
Cat
Regeneration
System.
Regeneration,
the
process
by
which
soot
is
removed
from
the
Diesel
Particulate
Filter,
is
completely
automatic
and
does
not
interrupt
the
machine's
work
cycle.
Emissions
The
MD5125
features
a
Cat
C9. 3
ACERT
engine
and
a
Cat Clean
Emissions
Module
to
deliver
the
performance
and efficiency
that
customers
demand,
while
meeting
U. S. [. . . ]