Page 1
785D
Mining Truck
Engine
Engine Model Cat
Gross Power – SAE J1995 1082 kW 1,450 hp
Net Power – SAE J1349 1005 kW 1,348 hp
Weights – Approximate
Gross Machine Operating Weight (GMW) 249 476 kg 550,000 lb
®
3512C HD
Page 2
Contents
Power Train – Engine .........................................3
Power Train – Transmission ..............................4
Engine/Power Train Integration ........................5
Structures/Suspension/Steering ......................6
Operator’s Station ...............................................7
Cat Brake System................................................8
Truck Body Systems ...........................................9
Monitoring System............................................10
Safety ..................................................................11
Sustainability .....................................................12
Serviceability .....................................................13
Customer Support .............................................14
Speci cations ....................................................15
Standard Equipment .........................................22
Mandatory and Optional Equipment .............23
The 785D Mining Truck is engineered for performance,
designed for comfort, and built to last. Developed
specically for high production mining and construction
applications, the 785D Mining Truck keeps material
moving at high volume to lower your cost-per-ton.
Rugged construction creates a durable machine.
Easy maintenance procedures ensure high reliability
and long life with low operating costs.
Page 3
Power Train – Engine
The Cat® 3512C HD engine delivers high power and reliability.
Design
The 3512C HD is a 12-cylinder, four-stroke design that uses
long, effective power strokes for more complete fuel combustion
and optimum fuel ef ciency.
EPA Compliant
Where applicable, the 3512C engine is compliant with U.S.
Environmental Protection Agency emission requirements.
Altitude Compensation
Designed for maximum operating efciencies at altitudes under
4267 m (14,000 ft).
High Torque Rise
The 23 percent net torque rise provides unequalled lugging force
during acceleration, on steep grades and in rough underfoot
conditions. Torque rise effectively matches transmission shift
points for maximum efciency and fast cycle times.
Enhanced Life
High displacement, low rpm rating and conservative
horsepower ratings mean more time on the haul roads
and less time in the shop.
Oil Renewal System
Optional oil renewal system extends engine oil change intervals
from 500 hours to 4,000 hours or more to increase machine
availability and reduce costs.
Engine Protection
Computerized system electronically protects the engine during
cold starts, high altitude operation, air lter plugging, high
exhaust temperature and engine overspeed (ARC). Optional
Engine Pre-Lubrication builds up oil pressure before
cranking providing additional wear protection.
Fuel Efciency
The engine provides additional retarding by running against
compression on downhill hauls. During retarding applications
the engine ECM does not inject fuel into the cylinders for
exceptional fuel economy.
3
Page 4
Power Train – Transmission
Unmatched operating efciency in all mining conditions.
Mechanical Power Train
The Cat mechanical drive power train and power shift
transmission provides unmatched operating ef ciency and
control on steep grades, in poor underfoot conditions, and
on haul roads with high rolling resistance.
1) Transmission
The Cat six-speed planetary power shift transmission is
matched with the direct-injection 3512C engine to deliver
constant power over a wide range of operating speeds.
Robust Design
Designed to efciently apply the higher horsepower of the
3512C engine, the proven planetary power shift transmission
is built tough for long life between overhauls.
Transmission Chassis Control (TCC)
TCC uses electronically transferred engine rpm data to execute
shifts at preset points for optimum performance, ef ciency
and clutch life.
2) Lock-Up Torque Converter
Combines maximum rimpull and cushioned shifting of
torque converter drive with the efciency and performance
of direct drive. Engages at approximately 8 km/h (5 mph),
delivering more power to the wheels.
3) Final Drives
Cat nal drives work as a system with the planetary power
shift transmission to deliver maximum power to the ground.
Built to withstand the forces of high torque and impact loads,
double reduction nal drives provide high torque multiplication
to further reduce drive train stress.
Wheels and Rims
Cast rear wheels and Cat center-mount rims are mounted
using studs to minimize installation, maintenance and
maximize durability.
Rear Axle Filtration
A new pump drive system provides continuous rear axle
ltration. Benets include cleaner oil, less down time
and improved component life.
4
Page 5
ET
VIMS
VIMS Main
Module
Engine/Power Train Integration
Electronically optimizes overall truck performance.
Cat Data Link
Electronically integrates machine computer systems to optimize overall power train performance, increase reliability
andcomponent life, and reduce operating costs.
Electronic Technician (Cat ET)
Cat ET service tool provides service technicians with easy access to stored diagnostic data through the Cat Data Link
tosimplify problem diagnosis and increase machine availability.
Integrated Braking Control (IBC)
IBC integrates Automatic Retarder Control and Traction Control into one system for optimum performance and ef ciency.
Body-up Reverse Neutralizer
Automatically shifts the transmission to neutral if the hoist lever is activated while transmission is shifted in reverse.
Supplemental Steering
Supplemental Steering system uses pressure accumulators and allows up to three 90-degree turns in case of engine failure.
5
Page 6
Structures/Suspension/Steering
Rugged Cat designs are the backbone of the 785D mining truck’s durability.
Box-Section Design
The 785D frame uses a box-section design, incorporating
two forgings and 24 castings in high stress areas with deep
penetrating and continuous wrap-around welds to resist
damage from twisting loads without adding extra weight.
Serviceability
The open box-section frame design allows easy access to power
train components, reducing overall removal and installation
time, and lowering overall repair costs. The raised and pinned
body allows excellent access to the transmission.
Steel Structures
Mild steel used throughout frame provides exibility,
durability and resistance to impact loads, even in cold
climates, and allows for easy eld repairs.
Integral Four-Post ROPS Cab
Resiliently mounted to the main frame to reduce vibration
and sound, the integral ROPS is designed as an extension
of the truck frame. The ROPS/FOPS structure provides
“ve-sided protection” for the operator and instructor.
Suspension System
Designed to dissipate haul road and loading impacts for longer
frame life and a more comfortable ride.
Steering System
Hydraulic steering control system is designed for exceptional
smoothness and precise control. A separate circuit prevents
cross contamination for long life.
Supplemental Steering
Supplemental steering system uses pressure accumulators and
allows up to three 90-degree turns in case of engine failure.
Cylinders
Four independent self-contained, oil pneumatic, variable
rebound suspension cylinders are designed to absorb shocks
in the most severe applications.
Durable Design
Rugged cylinders utilize large diameter bore and low pressure
nitrogen/oil design for long life with minimal maintenance.
• Front. Front cylinders with preset caster and camber are
mounted to the frame and serve as steering kingpins for
a tight turning radius with excellent maneuverability
and low maintenance.
• Rear. Rear cylinders allow axle oscillation and absorb
bending and twisting stresses caused by uneven and
rough haul roads rather than transmitting them to
6
themain frame.
Page 7
5
4
10
2
1
11
12
3
6
7
8
9
Operator’s Station
Designed for operator safety and comfort, superior control and high productivity.
Enhanced Operator Visibility
Through the use of the fully Integrated Object Detection System, RADAR AND CAMERA, the operator
can receive both audible and visual indications of detected objects.
Ergonomic Layout
The 785D operator station is ergonomically designed for total machine control in a comfortable, productive
and safe environment. All controls, levers, switches and gauges are positioned to maximize productivity
and minimize operator fatigue.
Quiet Cab
Integral, sound-suppressed ROPS/FOPS cab is resiliently mounted to the mainframe to isolate the
operator from sound and vibration for a quiet, secure and comfortable ride.
Viewing Area
Designed for excellent all-around visibility and clear sight lines to the haul road, the large viewing area
enables the operator to maneuver with condence for high productivity.
1) Air Suspension Seat with Three-Point Operator Restraint 2) Hoist Lever 3) Secondary Brake Pedal
4) Monitoring System 5) Steering Column 6) Transmission Console 7) Parking Brake Reset Valve
8) Storage Compartment 9) Trainer Seat 10) Operator Window 11) Operator Controls 12) Heating/
Air Conditioning
Radio Ready
The operator’s station comes ready with power ports, speakers, antenna, and electrical connections to
facilitate trouble-free radio installation. Consult your dealer for the complete line of available Cat radio
options including satellite radio.
7
Page 8
Cat Brake System
Superior control gives the operator condence to focus on productivity.
Integrated Braking System
The Cat oil-cooled braking system delivers reliable performance
and superior control in the most extreme haul road conditions.
Automatic brake modulation offers a smoother ride and
better control in slippery conditions, allowing the operator to
concentrate on driving. The two piston design system combines
the service, secondary, parking brake and retarding functions
in the same robust system for optimum braking ef ciency.
Four Corner Retarding
Four corner retarding with 60/40 percent split (rear/front) in
braking effort provides superior control in slippery conditions.
Balanced front to rear brake torque provides exceptional
braking performance and minimizes wheel lock-up, especially
during retarding.
Oil-Cooled Multiple Disc Brakes
Cat four-wheel, forced oil-cooled, multiple disc service brakes
are continuously cooled by water-to-oil heat exchangers for
exceptional, non-fade braking and retarding performance.
Extended Life Disc Brakes
Cat oil-cooled disc brakes are designed with large discs
and plates for reliable, adjustment-free operation and
performance. Brakes are completely enclosed and sealed
to prevent contamination and reduce maintenance.
Additionally, this machine features new extended life friction
material that is now standard on this model. The friction
material has double the wear life of standard brakes and is
twice as resistant to glazing resulting in more consistent braking
power with less noise.
Pistons
The primary piston hydraulically actuates both service and
retarding functions. The secondary piston is spring-applied
and held in the disengaged position by hydraulic pressure.
If hydraulic system pressure drops below a speci ed level,
the spring-applied secondary piston automatically applies
the brakes.
Parking Brake
The superior parking brake function on this truck is provided
by the oil-cooled, spring-applied, hydraulically-released
service brakes at all four wheels. This reliable and durable
parking brake will hold a truck carrying a rated load on
any grade up to 15 percent.
1) Parking/Secondary Piston 2) Service/Retarding Piston 3) Friction Discs
4) Steel Plates 5) Actuating Springs 6) Cooling Oil In 7) Cooling Oil Out
8
Page 9
Truck Body Systems
Caterpillar designed and built for the toughest mining applications.
Cat Truck Bodies
Matching the truck body to the application is a critical part of achieving the best value from your 785D. Caterpillar offers
a variety of application specic body options that yield a payload ranging from 131 to 143 metric tons (144 to 157 tons).
The Caterpillar exclusive 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.
Body Options
1) Cat “X” Body – The X body is a heavy duty body congured with a variety of liner options to meet site speci c requirements
of a mine. Like the Dual Slope – the X body is designed for durability across a range of harsh applications.
2) Mine Specic Body (MSD II) – For mature mines with good operational and maintenance practices, the lighter weight
MSD II(Mine Specic Design) body is available in several sizes. It is a customer/site specic body that is designed to
maximize performance. The MSD II is designed to maximize payload, provide good durability and can be con gured
withavariety ofliner options to meet the specic requirements of the mine.
3) Gateless Coal Body – This specialized high volume body, available in several sizes, is targeted at dedicated coal haulage
applications with minimal impact. The kicked up oor design eliminates the tailgate and gives the volume required
tomeettarget payload.
4) Dual Slope Body – The original standard body, the Dual Slope body, provides excellent load retention, maintains alow
center of gravity with optimum load distribution, reduces shock loading and is available in lined and unlined con gurations.
The Dual Slope body is intended for tough applications including greeneld sites and contracting mines.
Custom Body Options
A variety of options including tail extensions, sideboards, tumble bars, rock boxes and rock shedders are available to maintain
rated payload, reduce spillage and improve hauling ef ciencies.
1) X Body 2) MSD II Body 3) Gateless Coal Body 4) Dual Slope Body (not shown)
9
Page 10
Monitoring System
Vital machine health and payload data keeps the 785D performing.
VIMS® Monitoring System
The Caterpillar designed machine monitoring system provides
VIMS
PC
ET
VIMS
critical machine health and payload information to the operator
and service personnel. With the system monitoring and the
advanced diagnostic ability, VIMS simpli es troubleshooting
and reduces downtime by identifying abnormal conditions
before they cause damage. VIMS also stores machine data
to help manage production and utilize the ef ciency
Preventative Maintenance.
Production Management
Production Management enhances truck/loading tool
effectiveness, improves eet productivity and helps extend the
life of truck frames, tires, rims and power train components,
while lowering operating and maintenance cost.
Payload Management
Max Payload Speed Manager is a feature that aids in
managing the Caterpillar 10/10/20 Overload Policy. Based
on target payload weight and overload settings, the VIMS
system logs and warns the operator when the truck reaches
overload after second gear reweigh. The truck will be limited
to second gear at 1,750 rpm, and the automatic retarder
speed setting is reduced to 1,750 rpm until the load is dumped.
Road Analysis Control (RAC)
Optional system monitors haul road conditions by
measuring frame rack and pitch to improve haul road
maintenance, cycle times, tire life and fuel ef ciency.
VIMS-PC
VIMS-PC, the off-board reporting software program, allows
service personnel to download a complete record of machine
health and productivity data to a laptop computer for diagnosis
and analysis. Easy-to-use software enables service technicians
and mine management to generate health and payload
reports for more effective machine management.
VIMS Supervisor
Optional software allows mine management to easily manage
and interpret VIMS data for optimum eet management
and productivity.
Machine Management
Service technicians or mine personnel can download data and
generate reports. Data can be used to improve effectiveness
of scheduled maintenance programs, maximize component
life, improve machine availability, and lower operating costs.
Gauge Cluster
Conveniently located gauge cluster maintains a constant
display of vital machine functions.
10
Page 11
Safety
Cat mining machines and systems: Safety is priority one.
Product Safety
Caterpillar has been and continues to be proactive in developing mining machines that meet or exceed safety standards. Safety
is an integral part of all machine and system designs.
Access and Egress
Improvements for machine level access and egress include a standard 600 mm (24 in) diagonal stairway across the front of the
machine. Improvements for ground level access include an optional powered access stairway.
Integrated Object Detection Systems
Object Detection Systems are factory installed as standard equipment on 785D mining trucks. The fully Integrated Object
Detection System, RADAR AND CAMERA, provides both audible and visual indications of detected objects. This system
uses a combination of short and medium range radars which surround the machine, along with cameras on each side to allow
the operator to conrm the detected object. The cameras supplement the radar alerts and are selectable by touch screen menus
through an intuitive interface.
Overload Policy
Adherence to the Caterpillar 10/10/20 Overload Policy assures that steering and braking systems have suf cient capacity
to perform.
Standard Safety Features
Slip resistant surfaces, retractable, seat/shoulder belts with three-point operator restraint, wide-angle mirrors, body raised indicator,
body retaining cable, guard rails, reverse neutralizer when dumping, low interior sound level, secondary steering system, ground
level access shutoff switches.
SAFETY.CAT.COM™
11
Page 12
Sustainability
A variety of features improve sustainability in areas of decreasing waste,
extending component life and lowering emissions levels.
Sustainabilty Features
The 785D Mining Truck offers oil renewal systems, continuous rear axle ltration, extended life lters and
extended maintenance intervals which aid in decreasing the amount of waste contributed to our environment.
Engines with Advanced Technology
Engines with advanced technology contribute less emissions to the environment while maintaining fuel
ef ciency.
Advanced Surface Technology (AST)
Advanced Surface Technology (AST) is a replacement for hard chrome coatings on some steel parts,
including suspension and hoist cylinder rods. This technology improves wear resistance and reduces
repair time. Chrome has been eliminated to reduce environmental impact.
Fuel Efciency
The engine provides additional retarding by running against compression on downhill hauls.
Duringretarding applications the engine ECM does not inject fuel into the cylinders for exceptional
fueleconomy.
12
Page 13
Serviceability
Less time spent on maintenance means more time on the haul roads.
Servicing Ease
Easy access to daily service points simpli es servicing
and reduces time spent on regular maintenance procedures.
Enhanced serviceability and 500-hour service intervals are
designed to increase machine availability and productivity.
Maintenance Platform
Provides access to engine, air lters, steering hydraulic tank
and battery compartment.
In-Frame Access
Permits easy access to major components for easy servicing
and removal.
Ground-Level Access
Allows convenient servicing to tanks, lters, drains, and
engine shutdown. Ground-level VIMS data port permits easier
downloading of information.
Autolube
Automatic lubrication system reduces maintenance time
by automatically lubricating necessary components on
a regular basis.
Fast Fill Service Center
Optional service center reduces daily maintenance times with
clustered fast ll connections for steering oil, transmission oil,
engine oil and coolant.
Pressure Test Points and S•O•SSM Ports
Sample points and ports yield representative samples to monitor
critical machine systems.
Sealed Electrical Connectors
Electrical connectors are sealed to lock out dust and moisture.
Harnesses are braided for protection. Wires are color coded
for easy diagnosis and repair.
Fast Fill Fuel
Provides a receiver at the fuel tank to accept most 567 liters
per minute/150 gallons per minute fueling systems.
Air Filters
Radial seal air lters are easy to change, reducing time
required for air lter maintenance.
13
Page 14
Customer Support
Cat dealers have what it takes to keep mining haul trucks productive.
Commitment Makes the Difference
Support goes far beyond parts and service. From the time you select a piece of Cat equipment until the day
you rebuild, trade or sell it, the support you get from your Cat dealer makes the difference that counts.
Dealer Capability
Dealer expert technicians have the knowledge, experience, training and tooling necessary to handle your
repair and maintenance needs, when and where you need them.
Product Support and Service Support
Supported by a worldwide network of parts distribution facilities, dealer service centers and technical training
facilities, Cat dealers can maximize your uptime. With a tailored service plan, your dealer can help you
get the most return on your investment.
Training
Your Cat dealer can arrange training programs to help operators improve productivity, decrease downtime,
reduce operating costs, enhance safety, and improve return on the investment you make in Cat products.
Technology Products
Cat dealers offer a range of advanced technology products such as VIMS monitoring system and MineStar™
information management system. These products include radio data communications, machine monitoring
and diagnostics, eet management, and haul road maintenance software – all designed to improve eet
efciency, increase productivity, and lower costs.
www.cat.com
For more complete information on Cat products, dealer services, and industry solutions, visit us on the web
at www.cat.com.
14
Page 15
785D Mining Truck Specications
Engine Operating Speci cations Brakes
Engine Model Cat® 3512C HD Top Speed – Loaded 54.8 km/h 34 mph Brake Surface – Front 61 270 cm2 9,497 in
2
Rated Power 1082 kW 1,450 hp Steer Angle 36 Degrees Brake Surface – Rear 89 729 cm
Gross Power 1082 kW 1,450 hp Turning Diameter 29.8 m 97.7 ft Standards SAE J1473 OCT90
– SAE J1995 – Front ISO 3450-1985
Net Power 1005 kW 1,348 hp Machine Clearance 33.2 m 108.9 ft
– SAE J1349 Turning Diameter
Net Power 1005 kW 1,348 hp Target Payload 133 tonnes 146 tons
Net Power – Cat 1005 kW 1,348 hp
Net Power 1005 kW 1,348 hp
– ISO 9249
Net Power 1005 kW 1,348 hp
– 80/1269/EEC
Torque Rise 23%
Bore 170 mm 6.7 in
Stroke 215 mm 8.4 in
Displacement 58.56 L 3,573.6 in
• Net power advertised is the power available
at rated speed of 1,750 rpm, measured at the
ywheel when the engine is equipped with
fan, air cleaner, mufer and alternator.
• Ratings based on standard air conditions
of 25° C (77° F) and 99 kPa (29.32 Hg) dry
barometer. Power based on fuel having API
gravity of 35 at 16° C (60° F) and an LHV of
42 780 kJ/kg (18,390 BTU/lb) when engine
used at 30° C (86° F).
• No engine derating required up to 4267 m
(14,000 ft) altitude.
• Where applicable, the 3512C engine
is compliant with U.S. Environmental
Protection Agency emission requirements.
(Dual Slope)*
Minimum Target 131 tonnes 144 tons
Payload
Maximum Target 143 tonnes 157 tons
Payload
• Refer to the Cat Mining Truck 10-10-20
payload policy for maximum gross machine
weight limitations.
* Includes standard liners.
3
Transmission
Forward 1 12.1 km/h 7.5 mph
Forward 2 16.3 km/h 10.2 mph – High Idle
Forward 3 22.2 km/h 13.8 mph
Forward 4 29.9 km/h 18.6 mph
Forward 5 40.6 km/h 25.2 mph
Forward 6 54.8 km/h 34 mph
Reverse 11 km/h 6.8 mph
• Maximum travel speeds with standard
33.00-R51 tires.
• Caterpillar recommends the customer
evaluate all job conditions and consult the
tire manufacturer for proper tire selection.
• Gross Machine Operating Weight (GMW)
up to 249 476 kg (550,000 lb).
Body Hoists
Pump Flow 750 L/min 198 gal/
– High Idle min
Relief Valve Setting 17 238 kPa 2,500 psi
– Raise
Body Raise Time 15.2 Seconds
– High Idle
Body Lower Time 15.9 Seconds
– High Idle
Body Lower Time 16.2 Seconds
– Float
Body Power Down 15.9 Seconds
• Twin, two-stage hydraulic cylinders mounted
inside main frame; double-acting cylinders
in second stage.
• Power raise in both stages; power down
in second stage.
13,908 in
2
2
Weights – Approximate
Gross Machine 249 476 kg 550,000 lb
Operating Weight
(GMW)
Minimum/Maximum 83 304 – 183,654 –
Operating Chassis 84 668 kg 186,661 lb
Weight Range
(OCW)
Body Weight Range 20 831 – 45,924 –
30 623 kg 67,512 lb
Minimum/Maximum 106 218 – 234,170 –
Operating Chassis 117 597 kg 259,257 lb
Weight Range
Empty (EOMW)
• Body weight varies depending on how
body is equipped. Weight range for known
applications.
• Estimated weight of debris is not included
in operating chassis weights.
• Chassis weight includes hoist, body mounting
group, rims, tires, full with all operating
uids and 100% fuel.
Final Drives
Differential Ratio 2.10:1
Planetary Ratio 10.83:1
Total Reduction 22.75:1
Ratio
• Planetary, full- oating.
Suspension
Effective Cylinder 306.5 mm 12.1 in
Stroke – Front
Effective Cylinder 165 mm 6.5 in
Stroke – Rear
15
Page 16
785D Mining Truck Specications
Body – Dual Slope Service Re ll Capacities Steering
Body Weight 22 295 kg 49,150 lb Fuel Tank 1893 L 500 gal Steering Standards SAE J1511 OCT90
Heaped SAE (2:1) 78 m
• Body weight only. Does not include liners.
3
Body – X
Body Weight 25 160 kg 55,468 lb
Heaped SAE (2:1) 85 m
• Body weight only. Does not include liners.
3
Weight Distributions –
Approximate
Front Axle – Empty* 45-46%
Rear Axle – Empty* 54-55%
Front Axle – Loaded 33%
(Target)
Rear Axle – Loaded 67%
(Target)
*Depends on body con guration.
102 yd
111 yd
3
3
Cooling System 379 L 100 gal
Crankcase 204 L 54 gal
Differentials and 436 L 115 gal
Final Drives
Steering Tank 90 L 24 gal
Steering System 117 L 31 gal
(Includes Tank)
Brake/Hoist 337 L 89 gal
Hydraulic Tank
Brake/Hoist System 641 L 169 gal
(Includes Tank)
Torque Converter/ 248 L 65.51 gal
Transmission System
(Includes Sump)
ROPS
ROPS Standards SAE J1040 APR88
ISO 3471:1994
• ROPS (Rollover Protective Structure) for
cab offered by Caterpillar meets SAE J1040
APR88 and ISO 3471:1994 Level II ROPS
criteria.
• Turning diameter with standard tires,
per ISO 7457: 29.8 m (97 ft 9 in).
• Machine clearance diameter, per ISO 7457:
33.2 m (108 ft 11 in).
• Steering angle, left or right: 36 degrees.
• Separate hydraulic system prevents cross
contamination.
Tires
Standard Tire 33.00-R51 (E3 & E4)
• Productive capabilities of the 785D truck are
such that, under certain job conditions, TKPH
(TMPH) capabilities of standard or optional
tires could be exceeded and, therefore, limit
production.
• Caterpillar recommends the customer
evaluate all job conditions and consult the
tire manufacturer for proper tire selection.
ISO 5010:1992
Sound
Sound Standards ANSI/SAE J1166
MAY90
SAE J88 APR95
• The operator sound exposure Leq (equivalent
sound pressure level) measured according
to work cycle procedures speci ed in
ANSI/SAE J1166 MAY90 is 80 dB(A) for
cab offered by Caterpillar, when properly
installed, maintained and tested with doors
and windows closed.
• The exterior sound pressure level for the
standard machine measured at a distance of
15 m (49 ft) according to the test procedures
specied in SAE J88 APR95, mid-gear
moving operation is 89 dB(A).
• Hearing protection may be needed when
operating with an open operator station and
cab (when not properly maintained or doors/
windows open) for extended periods or in
a noisy environment.
16
Page 17
Dimensions
All dimensions are approximate.
13
15
14
16
2
3
11
10
12
17
18
1
5
4
1
2
3
4
5
6
7
8
Loading Height – Empty
9
Rear Sidewall Height
10
11
4968 mm 16 ft 4 in Rear Axle Clearance 1080 mm 3 ft 7 in
7
6
9
8
Overall Height – Body Raised 11 809 mm 38 ft 9 inHeight to Top of ROPS 5122 mm 16 ft 10 in
12
Operating Width 7061 mm 23 ft 2 inOverall Body Length 11 550 mm 37 ft 9 in
13
Centerline Front Tire Width 4850 mm 15 ft 11 inInside Body Length 7652 mm 25 ft 2 in
14
Engine Guard Clearance 1057 mm 3 ft 6 in Overall Length 11 548 mm 37 ft 10 in
15
Overall Canopy Width 6747 mm 22 ft 1 inWheelbase 5180 mm 17 ft 0 in
16
Outside Body Width 5894 mm 19 ft 4 inRear Axle to Tail 3410 mm 11 ft 3 in
17
Inside Body Width 5510 mm 18 ft 1 inGround Clearance 987 mm 3 ft 3 in
18
Front Canopy Height 5679 mm 18 ft 7 inDump Clearance 1200 mm 3 ft 11 in
19
20
906 mm 3 ft 0 in Centerline Rear Dual Tire Width 4285 mm 14 ft 1 in
21
Overall Tire Width 6277 mm 20 ft 7 inInside Body Depth – Max. 2132 mm 7 ft 0 in
22
Note: Standard Dual Slope Body and Standard Body Mounting Group (mirrors) shown.
19
20
21
22
17
Page 18
785D Mining Truck Specications
Retarding Performance
To determine retarding performance: Add lengths of all downhill segments and, using this total, refer to proper retarding chart.
Read from gross weight down to the percent effective grade. Effective grade equals actual % grade minus 1% for each 10 kg/t
(20 lb/ton) of rolling resistance. From this weight-effective grade point, read horizontally to the curve with the highest obtainable
gear, then down to maximum descent speed brakes can properly handle without exceeding cooling capacity. The following charts
are based on these conditions: 32° C (90° F) ambient temperature, at sea level, with 33.00-R51 tires.
NOTE: Select the proper gear to maintain engine rpm at the highest possible level, without overspeeding the engine. If cooling
oil overheats, reduce ground speed to allow transmission to shift to the next lower speed range.
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
Gross Weight
0 50 100 150 200 250
0 100 200 300 400 500 600
1
E
30%
25%
20%
L
15%
2
10%
3
4
5
5%
6
kg x 1000
lb x 1000
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
E – Empty
L – Loaded
18
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
SPEED
Continuous Grade Length*
*at sea level
mph
km/h
Page 19
Retarding Performance
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
Gross Weight
0 50 100 150 200 250
0 100 200 300 400 500 600
1
2
E
30%
25% 20%
L
15%
kg x 1000
lb x 1000
E – Empty
L – Loaded
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
3
4
5
10%
6
5%
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
mph
km/h
SPEED
Grade Distance — 450 m (1,500 ft.)*
*at sea level
Gross Weight
0 50 100 150 200 250
0 100 200 300 400 500 600
1
E
30%
25%
20%
L
kg x 1000
lb x 1000
15%
E – Empty
L – Loaded
2
3
4
5
10%
6
5%
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
mph
km/h
SPEED
Grade Distance — 600 m (2,000 ft.)*
*at sea level
19
Page 20
785D Mining Truck Specications
Retarding Performance
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
Gross Weight
0 50 100 150 200 250
0 100 200 300 400 500 600
1
2
kg x 1000
lb x 1000
E
30%
25%
20%
L
15%
E – Empty
L – Loaded
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
3
4
5
6
10%
5%
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
mph
km/h
SPEED
Grade Distance — 900 m (3,000 ft.)*
*at sea level
Gross Weight
0 50 100 150 200 250
0 100 200 300 400 500 600
1
E
30%
25%
20%
L
15%
kg x 1000
lb x 1000
E – Empty
L – Loaded
20
2
10%
3
4
5
5%
6
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
mph
km/h
SPEED
Grade Distance — 1500 m (5,000 ft.)*
*at sea level
Page 21
Gradeability/Speed/Rimpull
To determine gradeability performance: Read from gross weight down to the percent of total resistance. Total resistance
equals actual percent grade plus 1% for each 10 kg/t (20 lb/ton) of rolling resistance. From this weight-resistance point,
read horizontally to the curve with the highest obtainable gear, then down to maximum speed. Usable rimpull will depend
upon traction available and weight on drive wheels.
Typical Field Empty Weight
Gross Machine Operating Weight
249 476 kg (550,000 lb)
33.00-R51 Tires*
Gross Weight
kg x lb x
1000 1000
90
80
70
60
50
40
RIMPULL
30
20
10
0
0 50 100 150 200 250 300
0 100 200 300 400 500 600 700
200
L
30%
180
160
E
1C
140
120
100
80
60
1D
2D
3D
40
20
4D
5D
6D
0
0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 35 40 45 50 55 60
25%
20%
15%
10%
5%
kg x 1000
lb x 1000
TOTAL RESISTANCE
mph
km/h
(Grade plus Rolling)
*at sea level
Torque Converter Drive
Direct Drive
SPEED
E – Empty
L – Loaded
21
Page 22
785D Mining Truck Standard Equipment
Standard equipment may vary. Consult your Cat dealer for details.
ELECTRICAL
Alarm, Back-up
Alternator (105 A)
Batteries, 93Ah, Low-maintenance, 12V (2)
Converter, 12V electrical
Electrical System, 24V, 15A
Lighting System
Back-up and Hazard Lights
Directional Signals (front and rear LED)
Headlights, with Dimmer
LH Ladder Light and Service Deck
Lights
Stop and Tail Lights (LED)
Engine Compartment
OPERATOR ENVIRONMENT
Air Conditioner
Ashtray/cigarette lighter
Coat hook
Diagnostic connection port
Dome courtesy light
Entertainment radio ready
5 amp converter
Speakers
Antenna
Wiring harness
Gauges/Indicators
Air cleaner service indicator
Quad gauge panel
Air pressure
Brake oil temperature
Engine coolant temperature
Fuel level
Electric engine control fault indicator
Electric hour meter/tachometer
Speedometer
Tachometer
Transmission gear indicator
VIMS message center with universal
gauge
VIMS keypad
Heater/defroster
Horn
Hoist body control, electric
Integrated Object Detection System
ROPS cab insulated/sound suppressed
Storage compartment
Seatbelt, 75 mm (3 in), retractable
Steering wheel, tilt, padded, telescopic
Sun visor
Tinted glass
Window, electric powered, operator
Windshield wiper, intermittent control
and washer
POWER TRAIN
Cat 3512C HD-EUI diesel engine
Air Cleaner with Precleaner (2)
Engine Shutdown
Ether starting aid
Air to air aftercooler (ATAAC)
Elevated low idle control
Auto starter protection
Multi-point oil pressure sensing
Antifreeze, extended life coolant
–35° C (–30° F)
Braking System
Brake release motor (towing)
Oil-cooled, Multiple-disc (front and rear),
(service, retarding, parking, secondary)
Automatic retarder control
Engine overspeed protection
Extended life brake disc
Transmission
6-speed automatic powershift with electric
control (TCC)
Body-up shift inhibitor
Controlled throttle shifting
Directional shift management
Downshift/reverse shift inhibitor
Individual clutch modulation
Neutral coast inhibitor/start switch
Body-up reverse neutralizer
Programmable top gear
Lock-up torque convertor
OTHER STANDARD EQUIPMENT
Air Line Dryer (2)
Body Mounting Group
Auto lubrication system (Lincoln)
Dumping, Auxiliary Quick Connect for
“Buddy Dumping”
Steering, Auxiliary Quick Connect for Towing
Continuous rear axle ltration
Diagonal stairway, 600 mm (24 in)
Driveline Operator Safety Guard
Fast-ll Fuel System
VIMS Dataport
Battery Disconnect
High speed crankcase oil change
Reservoirs (Separate)
Brake/converter/hoist
Steering
Transmission
•O•
SSM sample ports
S
Supplemental steering (automatic)
Tie Down Eyes
Tow Hooks, Front
Traction Control System
Vandalism Protection Locks
Vital Information Management System
(VIMS) includes:
VIMS payload monitor
MAX payload and speed manager
22
Page 23
Mandatory Equipment
785D Mining Truck Mandatory and Optional Equipment
ELECTRICAL STARTERS AND BATTERIES
VIMS • Air start, vane, Ingersoll
• VIMS, English/Spanish • Air start, turbine, Ingersoll
Monitor System • Starting, electric, prelube
• Payload, indicator lights • Starting, electric
• Payload, digital display • Air start, turbine, TDI
Lights
• Lights, front/rear, HID
• Lights, front/rear, Halogen
FRAME
Body Mounting Groups
• Mounting, body, X, MSD, dual
OPERATOR ENVIRONMENT
Integrated Object Detection System
• Radar and camera
• Camera
• Allowance for omission
Seat Options
• Seat, Cat Comfort, 3 pt belt
Companion Seats
• Cat Seat, air Suspension, companion
• Cat Seat, non-suspension, companion
Visor
• Visor, ip down, front
• Visor, retractable, front
FUEL LINES AND TANKS
• Tank, fuel, standard volume, fast ll,
1893L (500 gal)
• Tank, fuel, standard volume, non
pressure, 1893 L (500 gal)
• Tank, fuel, large volume, fast ll,
2498L(660 gal)
• Tank, fuel, large volume, non pressure,
2498 L (660 gal)
POWER TRAIN
Engine
• Engine, standard arrangement
• Engine, EPA/ARB exibility
Radiator
• Radiator, folded core
Fuel lters
• Screen, fuel, primary with lines
• Filter, fuel with separator
Exhaust System
• Exhaust, muf er
• Exhaust, heated body
Fans
• Fan, conventional drive
• Fan, variable speed
Rims
• Rims, 24 × 51
Ground Access
• Ladder, xed
• Stairway, powered*
SPECIAL ARRANGEMENTS
Vessel Arrangements
• Vessels, pressurized, standard
• Vessels, pressurized, Canada
• Vessels, pressurized, EU
SERVICE INSTRUCTIONS
• Instructions, ANSI
• Instructions, ISO
*Target available 2Q 2011
Optional Equipment
BODIES OPERATOR ENVIRONMENT INFORMATION MANAGEMENT
• Body, X • Footrest, operator
• MSD II (Mine Speci c Design) • Hose, cab clean-out
• Dual Slope • Vacuum, cab clean-out
• Custom Body Options
POWER TRAIN
BODY EXTENSIONS
• Tail
• Wrap around
LINERS
• Full-length liner
• Tail extension wrap-around
• Pre-lube, engine
• Oil renewal system
• Oil cooler, rear axle
COLD WEATHER
• Starting, Cold Weather
TIRES AND RIMS
Spare rims
• Spare rim, 24 × 51
• Control, Road Analysis (RAC)
SERVICE CENTER
• Service Center, Wiggins
MISCELLANEOUS
• Fire extinguisher, portable
• Hub Odometer, Kilometers
• Hub Odometer, Miles
• Wheel Chocks
• Heater, Diesel fuel
23
Page 24
785D Mining Truck
For more complete information on Cat products, dealer services, and industry solutions,
visit us on the web at www.cat.com
© 2010 Caterpillar Inc.
All rights reserved
Printed in the U.S.A.
Materials and specications are subject to change without notice. Featured machines
in photos may include additional equipment. See your Cat dealer for available options.
CAT, CATERPILLAR, SAFETY.CAT.COM, their respective logos, “Caterpillar Yellow”
and the “Power Edge” trade dress, as well as corporate and product identity used herein,
are trademarks of Caterpillar and may not be used without permission.
AEHQ5969-03 (12-2010)
Replaces AEHQ5969-02
Loading...