D 250 E serie II .pdf

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D250E

®

Series II
Articulated Truck

Cat® 3306 DITA Engine
Gross power
Flywheel power
Rated payload
Body capacity

213 kW
201 kW
22.7 tonnes
13.7 m3

285 hp
270 hp
25.0 tons
18.0 yd3

D250E Series II Articulated Truck
Delivers top productivity and long service life.

Drive Train
Cat 3306 DITA engine, autoshift
transmission, torque converter, final
drives and other power train
components are integrated into a
through-drive center axle drive train
that delivers maximum efficiency in all
working conditions. p.4

Box-section Frame

Truck Body

box section rear frames minimize stress
concentration and resist twisting due to
a lower center of gravity. Joined by an
articulating/oscillating hitch that
provides excellent maneuverability and
assures all-wheel ground contact. p.5

shaped Diverging Flow design for easy
loading by a variety of loading systems,
superior load retention and cleaner load
ejection. p.6

✔ Wider heavy box-section front and twin ✔ The truck body features a new bowl-

Top performance.
Surefooted maneuverability through its
articulating/oscillating hitch makes the
D250E Series II a top performer in both
severe ground conditions and at high haul
road speeds.

2

Operator's Station

✔ Ergonomically designed wrap-around
dash, tilt and telescoping steering
wheel, convenient control placement
and exceptional operator comfort
promote fast, confident machine
operation for top productivity. p.7

Suspension
The D250E Series II front hydraulic and
rear rubber suspension system features
full-frame oscillation, and provides a
smooth ride in poor underfoot
conditions and at higher hauling
speeds. A high capacity nitrogen
accumulator and large bore suspension
cylinders absorb hauling and loading
shocks. p.8

Complete Customer Support
Designed for easy maintenance and
repair, the D250E Series II is backed by
the Caterpillar commitment to customer
support. p.9

✔ New feature

3

Drive Train
Cat drive train components provide superior efficiency for maximum productivity.

6

1

2
7
3
8
4

9

10
5

Cat 3306 DITA diesel engine features
high displacement and low rpm rating
for long service life and low
maintenance costs.
■ Four-stroke cycle design provides
long, effective power strokes for
more complete fuel combustion.
■ Direct-injection fuel system delivers
efficient, precise fuel metering.
■ High torque rise provides unequalled
lugging force during acceleration.
■ Turbocharged and aftercooled for
better fuel efficiency and lower
emissions.
Planetary autoshift transmission
provides smooth shifts at factory preset
shift points. Electronic control system
assures precise match of engine torque
to ground speed.
■ Large-diameter, perimeter-mounted
clutches with heat-treated steel clutch
plates deliver maximum durability.
■ Modulating pressure valve regulates
hydraulic actuation pressures, easing
clutches together, reducing shocks on
components and providing longer
life.

4

■

Electronic Transmission Control
monitors engine rpm electronically
and executes shifts at factory-preset
points for optimum performance and
efficiency.
— Engine Overspeed Protection
shifts the transmission up one gear
during an overspeed condition.
— Top gear may be programmed to
match the job requirements.
— Body-up Protection prevents the
transmission from shifting above a
programmed gear if the hoist lever
is not in “float.”
— Downshift inhibitor.
— Neutral coast inhibitor.
— Stores transmission shift history,
event data and malfunctioning
component fault codes for use by
service personnel.
— Hoist control feature provides
improved modulation of body
raise and lower functions.

1 Turbocharger
2 Nozzle assemblies
3 Cat fuel injection system
4 Aluminum alloy pistons
5 Forged crankshaft
6 Aftercooler
7 Valves (intake, exhaust)
8 Oil cooler
9 Cylinders, full-length, water-cooled
10 Cooling jets

Final drives are outboard-mounted,
planetary design to lessen torque loads
on other drive train components.
■ Large-capacity, tapered roller
bearings in wheels and Caterpillar
Duo-Cone seals deliver maximum
reliability under severe working
conditions.
Torque converter multiplies torque for
high rimpull.
■ Allows fast acceleration and delivers
exceptional power through soft
underfoot conditions.
■ Automatic lock-up provides fuelefficient, direct-drive hauling.

Multi-plate, inter-axle differential on
the D250E Series II divides torque
between the front and rear axle
differentials for excellent traction when
needed in poor underfoot conditions.
Under normal conditions, the inter-axle
differential divides torque 40% to front
axle and 60% to rear axles. When the
locking system is activated, all three
axles lock in unison. In addition, a
cross-axle differential locking system
provides 100% drive line locking — all
three axles and all six wheels — for
maximum performance in adverse
conditions.
The operator engages the inter-axle
differential lock with a foot control
located in the cab. Activating a switch
on the dashboard and depressing the
floor control engages both the inter-axle
differential and the cross-axle
differential locks.
Both systems can be engaged and
disengaged on-the-go for maximum
flexibility.

5

Box-section Frame
The strong backbone of a Caterpillar® Articulated Truck.

Rear frame. Twin-box construction
minimizes stress concentration,
provides low weight and long service
life.
■ Body hoist and rear suspension pivots
are positioned to minimize stress
concentration.

6

Articulating/oscillating hitch allows
articulated steering and helps ensure allwheel ground contact.
■ Eliminates torsional stress between
front and rear frames.
■ Steel alloy forged tube and cast head
are robotically welded together to
form a hitch with unmatched strength
and durability.
■ Uses two large-diameter adjustable
bearings in hitch tube to allow
oscillation and to carry high vertical
and longitudinal load stresses.

Front frame features internally braced,
heavy, deep box-section construction
with integral bumper.

Truck Body
Designed for easy loading, superior load retention and clean load ejection.
Large body volume and low center of
gravity result in high material capacity,
excellent stability and easy loading
from a variety of loading systems.
■ Bowl-shaped Diverging Flow design
provides for easy loading and cleaner
load ejection.
■ Thick sidewall, front and bottom
plates, manufactured from high yield
steel, assure maximum body
durability.
■ Two-stage ducktail design provides
enhanced superior load retention on
steeper operating grades.
■ Integral spill guard aids load retention
and protects the hitch area.
■ Divergent base-plate design promotes
smooth material flow for clean load
ejection.
■ Provision for exhaust heat to body is
standard.
■ Optional bolt-on underslung and
scissor-type tailgates provide
improved material retention to meet
specific application requirements.
■ Double-acting, single-stage hoist
cylinders, combined with a powerful
hydraulic system, deliver fast dump
cycles.

Custom Products
Caterpillar customized Articulated Trucks meet your special needs.
In addition to the standard range of
optional equipment, special machine
configurations can be made to suit your
specific applications. These include:
■ High capacity bodies for waste, coal
and other low-density materials.

■

■
■
■

Flatbeds and special carriers for
dedicated material handling.
Container carriers.
Water wagons.
Pipe and log carriers.

Contact your Caterpillar dealer for
details on matching your D250E
Series II articulated truck to your
special application.

7

Operator's Station
Control, comfort and confidence contribute to top productivity.
Sound-suppressed ROPS/FOPS cab is
resiliently mounted for reduced
vibration and noise. Tilts to rear for
easy service access.
Excellent view all around for confident
operation. Laminated and tinted front
and rear windows; tempered side and
rear windows. Intermittent windshield
wipers and washers are standard.
Heater and optional air conditioning
systems located outside the cab for
added room and reduced noise levels.
Air circulation system delivers filtered,
pressurized, temperature-controlled air.
Ergonomically designed wrap-around
dash sets a new industry standard for
styling, comfort and ease of operation.
The result is higher performance by
operators for greater productivity.
■ Steering column tilts and telescopes
for improved operator comfort and
efficiency.
■ Horn button located on steering
wheel for easy access.
D250E Series II Electronic Monitoring
System (EMS II) constantly monitors
critical machine functions and alerts
operator to problems before
catastrophic failures occur.
Cushioned companion seat with seat
belt provides comfortable
accommodation for rider.
Caterpillar Contour Series Seat is
ergonomically designed and fully
adjustable for maximum operator
comfort.
■ Seat cushion is rolled down across the
front to reduce pressure on the thighs.
■ Cushion side bolsters restrain side-toside movement when operating on
side slopes and rough terrain. Front
corners are flat and open for
unrestricted leg movement.

8

■

■

■

Cushion is flat across the rear to
prevent discomfort caused by hip
displacement common with buckettype seats.
Backrest centerline conforms to the
operator's spinal curve. Contour at
bottom is relieved away from lower
back to reduce pressure.
Backrest also has a transverse curve
to provide additional side-to-side
support.

■

■

■
■

Backrest extension provides
additional upper back support.
Fully adjustable seat allows the
operator to position himself for
maximum comfort.
An air suspension seat is standard.
Wide retractable seat belt for ease of
entering and exiting the cab.

Suspension
Unique all-wheel system provides smooth ride, allows high hauling speeds.
Axles are similar for parts
commonality. Integral flanges with
machined faces allow direct mounting
to front or rear subframes for simple
installation and removal.
■ Cross axle differential locks
compensate for difference in traction
between left and right wheels.
■ Series II brake system is a dualcircuit, all-wheel system. A fullpower hydraulic system actuates
self-cleaning caliper disc brakes, with
independent front and rear circuits
and accumulators. A multi-plate, oilimmersed parking brake mounts on
the transmission. It’s operated by a
push button, spring applied and
hydraulically released. The brake
is durable and quiet.
Front axle is mounted on a swinging
cradle subframe arrangement which
pivots on the front frame to allow
cushioning movement in vertical plane.
■ Two large-bore, long-stroke cylinders
provide excellent cushioning and
dampening.
■ High capacity nitrogen accumulator
absorbs hauling and loading shocks
transmitted by oil from the
suspension cylinders.
■ Body load stresses go directly to the
suspension system rather than being
absorbed by the frame. This extends
the life of the frame and provides a
more comfortable ride for the
operator.

Through-drive center axle means one
drivetrain instead of two for greater
reliability and durability. Fewer
components mean less maintenance.
Rear axle — Mechanical balance beam
suspension connects rear axles with
elastomer springs, allowing all four rear
wheels to remain in constant ground
contact. System improves vehicle
traction and flotation.

■

■

Axle castings are mounted to
A-frames. Each is centrally attached
to the rear frame by a lateral tie rod
and spherical bearing.
Arrangement allows wide range of
axle oscillation and independent
wheel movement.

9

1

5

6

12

13

14

15

2
7
3
8

19a

19b

19h

9
4

19e

10

11

1
2
3
4
5
6
7
8
9
10

headlights
parking lights
temperature control
lighter
floodlight
secondary steering
heater or air conditioning
fan speed
rear windshield wash wipe
ether start aid

11 combination windshield wiper,
directional turn signal, high & low
beam control
12 coolant temperature
13 transmission oil temperature
14 engine oil pressure
15 fuel level
16 tachometer
17 speedometer
18 actual gear indicator

19 alert indicators
19a retarder
19b secondary steering
19c transmission lock
19d differential lock
19e left and right turn signal
19f action light
19g body raised
19h high beam

10

16

23

24

26

17

25

27

28

29

18

19c

19d
19g

30
31

19f

20

20
21
22
23
24
25
26
27
28

horn
hazard light
retarder control
axle locks
lamp test
operating mode
parking brake
brake oil pressure
charging system

21

22

29
30
31
32
33
34

retarding warning
primary steering pressure
operating mode display
high gear selector button
neutral lock switch
transmission hold switch

33

32
34

11

System Compatibility
An optimum system match gives you a productivity advantage.
The D250E Series II is a match for
Cat 325, 330 and 350 ME hydraulic
excavators, the 950 and 966 wheel
loaders, and the 963 and 973 track-type
loaders. This results in increased
production and lower system costs per
unit of volume moved.

Loader Pass Matching
Loader 350 ME 330 ME 325 ME 966F Series II
950G
Loader Capacity 500-690 400-595 295-395 495-690 395-595
Ton/50 min hr
Passes 3-4
4-5
5-6
3-4
4

Complete Customer Support
When you buy a Cat machine, you also get Caterpillar's total commitment
to customer support.
Parts availability. Most Cat parts are
immediately available from any dealer.
Cat dealers rely on our worldwide
computer network to find parts instantly
and minimize machine downtime. Many
components are economically available
as Caterpillar Remanufactured
Products.
Machine management services. Cat
dealers help manage your equipment
investment with:
■ Effective preventive maintenance
programs.
■ Diagnostic programs such as
Scheduled Oil Sampling and
Technical Analysis.
■ Information to make the most costeffective repair option decisions.
■ Customer meetings; training for
operators and mechanics.
■ Equipment selection software.

12

Flexible financing. Your dealer can
arrange affordable financing for the
entire Caterpillar line. Talk to your
dealer to learn how terms can be
structured to meet your cash flow
requirements.

Engine

Transmission

Four-stroke cycle, in-line six cylinder 3306 turbocharged
and aftercooled diesel engine.

Five-speed planetary autoshift, remotely
mounted from engine.

Ratings at 2200* rpm
Gross power
Net power

Maximum travel speeds (loaded):*

kW

213
201

hp

285
270

The following ratings apply at 2200
rpm when tested under the specified
standard conditions for the specified
standard:
NET POWER
Caterpillar
ISO 9249
EEC 80/1269
SAE J1349
DIN 70020

kW

hp

PS

201
201
201
199
—

270
270
270
267
—

—
—
—
—
280

Dimensions
Bore
Stroke
Displacement

121 mm
152 mm
10.5 liters

4.75 in
6.0 in
638 cu in

*Power rating conditions
based on standard air conditions of
25°C (77°F) and 99 kPa (29.32 in Hg)
dry barometer
■ used 35° API gravity fuel having an
LHV of 42 780 kJ/kg (18,390 Btu/lb)
when used at 30°C (86°F) [ref. a fuel
density of 838.9 g/L (7.001 lb/gal)]
■ net power advertised is the power
available at the flywheel when the
engine is equipped with fan,
alternator, air cleaner and muffler
■ no derating required up to 3477 m
(11,400 ft) altitude
Features
■ direct-injection fuel system with
individual adjustment free injection
pumps and nozzles
■ one-piece cylinder head with cast
intake manifold
■ 3-ring aluminum alloy pistons
■ heat resistant sil-chrome steel intake
and stellite-faced exhaust valves
■ forged steel connecting rods
■ cast cylinder block with replaceable
wet liners
■ induction-hardened, forged crankshaft
■ direct-electric 24-volt starting and
charging system
■ two 12-volt, 100 amp-hour, 750 CCA,
maintenance-free batteries
■ 50-amp alternator
■ tube-type, water-cooled oil cooler
■ cross-flow, steel-fin, tube-type
radiator
■ operational in -28.9°C (-20°F) to
43.3°C (110°F) ambient conditions
■ dry-type, radial-seal air cleaner with
primary and secondary elements
■

km/h

Forward 1
2
3
4
5
Reverse 1
2

6.22
10.71
17.69
30.78
50.85
6.5
18.49

MPH

3.87
6.65
10.99
19.13
31.60
4.04
11.49

*Speeds are for truck equipped with
23.5R 25 tires.
Features
■ large-diameter clutch packs for
maximum leverage
■ planetary design for minimum tooth
loading
■ electronically controlled hydraulic
shift actuation for smooth shifting
■ integral drop box with lockable
planetary cross-axle differential
■ single-stage torque converter with
free-wheeling stator, 2.15:1 stall
torque ratio and automatic lock-up in
each gear
■ torque converter matched to engine
and transmission for high efficiency
hauling and reduced shock loads to
drivetrain

Tires and Wheels
Six wide-base, low-pressure 23.5R25
radial tires on 12-stud rims.
Features
■ large-diameter, fully interchangeable
tires provide good flotation, reduce
rolling resistance and wear, and allow
good ground clearance

D250E Series II Articulated Truck specifications

13

Brakes

Steering

Axles

Meet SAE J1473 OCT90 and
ISO 3450-1985 standards.

Articulated-frame, hydraulic steering.

Identical, interchangeable cast-steel
axles.

Service brake features
■ hydraulically actuated, self-cleaning
caliper disc brakes
■ foot-operated, all-wheel brake system
with independent front and rear
circuits and accumulators
Parking brake features
■ pushbutton-operated, springapplied/pressure released
■ maintenance-free, multi-plate wet
brake is enclosed in drop box

Features
■ double-acting, cushioned steering
cylinders articulate machine 45° left
or right
■ variable-displacement pumps provide
flow-amplified steering circuit
capacity of 120 liters/min (32 GPM)
■ standard ground-driven supplemental
steering system meets SAE J1511
OCT90 and ISO 5010-1992
■ 2.8 turns from lock to lock

Features
■ clutched cross-axle differential locks
compensate for slip and spin for
increased traction

Final Drives

Body Hoist

Body Capacities

Outboard-mounted, planetary final
drives.

Two flex-free, single-stage, doubleacting hoist cylinders.

Capacities to SAE J1363 JAN 85,
rounded accordingly.

Features
■ design lessens torque load on other
driveline components
■ large-capacity, tapered roller bearings
and Duo-Cone seals for maximum
reliability

Features
■ cylinders positioned within body
profile for maximum protection
■ 70° hoist angle with power up and
down for clean load ejection and fast
dump cycles
■ power up, 10 seconds; power down,
7 seconds

Body Plate Thickness

Operating Weights

Front
Scow
Side
Base

14

mm

in

8
14
12
14

.31
.55
.47
.55

Empty
Front axle
Center axle
Rear axle
Total

m3

yd3

Struck
Heaped SAE 2:1
Heaped SAE 1:1

10.5
13.7
16.8

13.7
18.0
22.0

Rated Load

Loaded

kg

lb

kg

lb

kg

lb

12 000
4930
4670
21 600

26,460
10,871
10,297
47,628

1284
10 568
10 828
22 680

2831
23,302
23,876
50,009

13 284
15 498
15 498
44 280

29,291
34,173
34,173
97,637

D250E Series II Articulated Truck specifications

Service Refill Capacities
L

U.S. gal

Fuel tank
360
Cooling system
63
Hydraulic system
200
Engine crankcase
27.5
Transmission
60
Final drives/differentials:
front, center axles
(each)
31
rear axle
31

95
17
53
7
16

8
8

ROPS/FOPS Cab

Turning Circle

Caterpillar cab and Rollover Protective
Structure (ROPS).

Dimensions are for machines equipped
with 23.5R 25 tires.

Features
■ meets OSHA and MSHA limits for
operator sound exposure with doors
and windows closed (according to
ANSI/SAE J1166 MAY90)
■ ROPS meets the following criteria:
- SAE J1040 APR88
- ISO 3471-1986
■ also meets the following criteria for
Falling Object Protective Structure:
- SAE J231 JAN81
- ISO 3449-1984
■ operator sound pressure level is
77 dB(A) when measured per
ISO 6394 of 86/662/EEC

Turning dimensions
A
B
C
SAE Radius
J695B FEB84

m

ft in

3.76
4.78
7.44

12'4"
15'8"
24'5"

7.07

23'2"

SAE
Turning Radius
(J695B)

Dimensions
(approximate)

5785
mm
5785
19' 0"
19’0”
5396
Inside
of Body
5396 mm
Inside
of Body
17’8”
17' 8"

6386
6386
mm
20’11”
20' 11"

2664
mm
2664
8' 9"
8’9”

70°

3348
mm
3348
11’0”
11' 0"

2750
2750
mm
9’3”
9' 0"

575
mm
575
1' 11"
1’11”
1680
mm
1680
5'
6"
5’6”

1700
mm
1700
5' 7"
5’7”

3877
mm
3877
12'
9"
12’9”
9997
mm
9997
32' 10"
32’10”

511
511 mm
1’8”
1' 8"

2740
mm
2740
9'
0"
9’0”

2218
2218
mm
7’3”
7' 3"
2820
2820
mm
9’3”
9' 3"
2880
2880
mm
9’5”
9' 5"

D250E Series II Articulated Truck specifications

15

Gross Weight
10
15
60
50
40
30
20
15
10

Rimpull

To determine performance, read from Gross
Weight down to % Total Resistance. Total
Resistance equals actual % grade plus 1%
for each 10 kg/tonne (20 lb/ton) of Rolling
Resistance. From this point, read
horizontally to the curve with the highest
attainable speed range. Then, go down to
Maximum Speed. Usable Rimpull depends
on traction available.

KG x 1000

20

20

30

40 50 60 80 100 KG x 1000

30

40 50 60 80 100

300 LB x 1000

150 200

LB x 1000
150

40
E

100
80
60
40
30

7

20
15

5
4
3

10
8
6

2

4

30

L

20
15
10
8
6

1

4
3
2

2
3
4
5

3
1

2

.5

1

Total Resistance % [Grade + Rolling]

Gradeability/Speed/Rimpull

1 — 1st Gear
2 — 2nd Gear
3 — 3rd Gear
4 — 4th Gear
5 — 5th Gear

0.25
0

5

0

10
10

15

20

20

25

30

Speed

30

40

35

50

40 MPH
60

KM/H

E — Empty
L — Loaded

Gross Weight

Retarding Performance

10
10

30

40

30
50

60

40

70

80

90

50 KG x 1000
100

50

50

E

L
40

1
40

30
30

25
2
20

20

3

15
10

4

10

5
0

0
0

5

10
10

15
20

20
30

25
40

30
50

5

35

45 MPH

40

60

70

Speed
E — Empty
L — Loaded

16

LB x 1000

D250E Series II Articulated Truck specifications

Effective Grade (Favorable)

To determine performance, read from Gross
Weight down to % Effective Grade.
Effective Grade equals actual % favorable
grade minus 1% for each 10 kg/tonne
(20 lb/ton) of Rolling Resistance. From this
point, read horizontally to the curve with the
highest attainable speed range. Then, go
down to Maximum Speed. Retarding effect
on these curves represents full application of
the retarder.

20

20

KM/H

1 — 1st Gear
2 — 2nd Gear
3 — 3rd Gear
4 — 4th Gear
5 — 5th Gear

Standard Equipment
Standard and optional equipment may vary. Consult your Caterpillar dealer for specifics.
Air vents, adjustable
Back up alarm
Body, adapted for exhaust heat
Differentials, clutched cross-axle, for
all axles
Electrical system, 24-volt
Ether starting aid
Glass windows, toughened and tinted,
front and rear
Grill, radiator protection
Guards:
crankcase and axle
front light
rear window
Headlights, four, with dimmer switch
Heater/defroster with three-speed fan
Horn, electric
Lights:
cab interior
front, side
rear, working
reversing, two
stop/tail, two
Mirrors, left and right

Mud flaps, body mounted
Radio ready
Retarder
ROPS cab, with full instrumentation,
including:
Electronic Monitoring System panel
alternator
coolant temperature
brake oil pressure
engine oil pressure
low fuel indicator
Gauges
fuel, in-cab
torque converter temperature
Indicator lights
direction/hazard
headlights, high beam only
cross-axle differential lock-up
parking brake
transmission/torque converter
lock-up
Meters
service hour meter
speedometer
tachometer

Seat, Caterpillar Contour Series
Air suspension
Seat, padded, companion
Seat belt, retractable
S•O•S sampling valves
Spill guard, front, integral part of
fabricated body
Sun visor
Supplemental steering
Tires, six 23.5R25, radial
Tool box, lockable
Tow pins, front and rear
Vandalism protection: lockable caps
for fuel tank, hydraulic oil tank
and radiator
Windows, opening, side
Windshield wiper and washer,
intermittent (front window)

Optional Equipment
Optional equipment may vary. Consult your Caterpillar dealer for specifics.
Air conditioner with R134A refrigerant
Body connection for exhaust heat
Body liners
Ether starting aid
Sound suppression, spectator
Starting receptacle, electric, remote
Tailgates:
scissor-type
underslung
Tires, low profile, 660/65R25
Tool kit
Wiper/washer, rear window, intermittent

D250E Series II Articulated Truck specifications

17

D250E Series II Articulated Truck

www.CAT.com
© 1998, 1999 Caterpillar
Printed in U.S.A.

AEHQ5290-01 (12-99)
(Replaces AEHQ5290)

Materials and specifications are subject to change without notice.
Featured machines in photos may include additional equipment.
See your Caterpillar dealer for available options.

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