CAT 770®

OFF-HIGHWAY TRUCK BARE CHASSIS

Caterpillar offers off-highway truck bare chassis designed for specialty machines in a variety of applications —including water trucks, tow tractors, and fuel / lube trucks. When configured as a water truck, the tank capacity is
9,000 gallons (34 000 liters). These partial machine configurations allow construction, quarry, and mining customers to purchasecomplete solutions from our global Cat ® dealer network — with support every step of the way.

PROVEN CAT® TRUCK PLATFORM

SAFETY BUILT IN

Cat trucks are built for durability, reliability, andefficiency to deliver the performance you need insome of the toughest applications around the world.

As we design a truck, we take the safety of the operator
and personnel working on the ground very seriously.
Ground level and platform accessible daily check points.
Excellent visibility. Solid, stable walking/working
platforms with good traction, material shedding,handrails. And the new Traction Control System, returns
the truck to solid footing sooner.

APPLICATION-SPECIFICCAB & ROPS CERTIFICATIONCat Off-Highway Truck Bare Chassis ROPS is certified
to ISO 3471 Tractor criteria, to provide a higher levelof protection for towing applications.

OPERATOR EXPERIENCE
A truck is only as productive as its operator — so
we've updated the 770 with some key features to help
old and new operators be comfortable and confident
while operating the truck. Convenient automatic
temperature control and powered left side window.
Low-effort access getting in and out of the cab with
ample stand up room. Cat Comfort Seat with airsuspension and excellent adjustability.

FUEL SAVINGS

Fuel savings are achieved by reducing power
between 0.15 to 15% during all phases of operation.
Part throttle shifting has the benefit of saving fuel –it no longer needs to apply fuel towards overcoming
lost momentum between shifts.

SIMPLE SERVICEThis truck is designed to provide operators andtechnicians with easy access to common service
points like engine lockout, machine system lockout,
fluid level sight gauges, grease fittings, and access tothe engine for regularly scheduled maintenance.

SUPPORTED BY THE CAT DEALER
NETWORK+ Full support of Cat dealer and parts network+ Cat dealer installation & retrofit kits available+ Eligible for Equipment Protection Plans (EPP)& Customer Value Agreements (CVAs)

770 Off-highway Truck Bare Chassis Specifications
Configurations and features may vary by region. Please consult your Cat® dealer for availability in your area.

EngineOperating Weights – without Hoist Cylinders (HRC)

Engine Model

Cat C15

Bare Chassis Weight

25 179 kg

55,510 lb

Rated Engine Speed

1,700 rpm

Payload46 035 kg

101,490 lb®

Gross Power - SAE J1995

384 kW

515 hpFront Axle Bare Chassis Weight

15 107 kg

33,306 lb

Net Power - SAE J1349

356 kW477 hpFront Axle Payload

9105 kg

20,074 lb

Number of Cylinders

6

Rear Axle Bare Chassis Weight

10 072 kg

22,204 lb

36 930 kg

81,416 lb

Bore137 mm

5.4 inRear Axle PayloadStroke

171 mm

6.7 in15.2 L

927.6 in 3

• LRC = Lesser Regulated Countries. HRC = Highly Regulated Countries.
• Care must be taken when designing any attachments so that theDisplacement• Net Power advertised is the power available at the flywheel when theengine is equipped with air intake system, exhaust system, and alternator.
• Ratings based on SAE J1995 standard air conditions of 25° C (77° F)
and 100 kPa (29.61 Hg) 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 3000 m (9,843 ft) altitude.
• Meets U.S. EPA Tier 4 and EU Stage V emission standards.
• Meets Japan Small Volume Exemption.

71 214 kgTires
18.00R33 (E4)
• Productive capabilities of the 770G 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 evaluates all job conditions
and consults the tire manufacturer for proper tire selection.

Weight Distributions – Approximate

Operating Weights – all configurations
Target Gross Machine Weightaxle weights are not exceeded.

157,000 lb

Operating Weights – with Hoist Cylinders (LRC)

Front Axle – Empty

49 %Front Axle – Loaded

34 %Rear Axle – Empty

51 %Rear Axle – Loaded

66 %Bare Chassis Weight

25 023 kg

55,166 lb

Payload46 191 kg

101,834 lb

Front Axle Bare Chassis Weight

15 014 kg

33,100 lb

Final Drives

Front Axle Payload

9199 kg

20,280 lb

Differential Ratio

1.92:1

Rear Axle Bare Chassis Weight

10 009 kg

22,066 lb

Planetary Ratio

4.80:1

Rear Axle Payload

36 988 kg

81,544 lb

Total Reduction Ratio

9.26:1

Operating Weights – without Hoist Cylinders (LRC)
Bare Chassis Weight

24 656 kg

54,357 lb

Payload46 558 kg

102,643 lb

Front Axle Bare Chassis Weight

14 794 kg

32,614 lb

Front Axle Payload

9419 kg

20,766 lb

Rear Axle Bare Chassis Weight9862 kg

21,743 lb

Rear Axle Payload

37 139 kg

81,877 lb

Operating Weights – with Hoist Cylinders (HRC)

BrakesBrake Surface – Front

1395 cm2

216 in2

Brake Surface – Rear

40 225 cm

6,235 in2

Brake Standards

2ISO 3450:2011

Transmission
Forward 1

11.9 km/h

7.4 mphForward 2

16.3 km/h

10.1 mph

Forward 3

22.2 km/h

13.8 mph

Forward 4

29.8 km/h

18.5 mph

Bare Chassis Weight

25 546 kg

56,319 lb

Forward 5

40.4 km/h

25.1 mph

Payload

45 668 kg

100,681 lb

Forward 6

54.4 km/h

33.8 mph

Front Axle Bare Chassis Weight

15 328 kg

33,792 lb

Forward 7

73.7 km/h

45.8 mph

Front Axle Payload

8885 kg

19,588 lb

Reverse14.2 km/h

8.8 mphRear Axle Bare Chassis Weight

10 218 kg

22,528 lb• Maximum travel speeds with standard 18.00R33 (E4) tires.

Rear Axle Payload

36 783 kg

81,092 lb

2770 Off-highway Truck Bare Chassis Specifications
Body Hoists
Pump Flow – High Idle

448 L/min

118 gal/min

Relief Valve Setting – Raise

18 950 kPa

2,750 psi

Relief Valve Setting – Lower

3450 kPa

500 psi

Body Raise Time – High Idle

7.5 seconds

Body Lower Time – Float

10 seconds

Body Power Down – High Idle

10 seconds

Service Refill Capacities
Fuel Tank

530 L

140 gal

Diesel Exhaust Fluid (DEF) Tank

21 L

6 gal

Cooling System

125 L

33 galCrankcase

64 L

17 galDifferentials and Final Drives

180 L

47 galSteering Tank

55 L

14.5 gal

Steering System (includes tank)

87 L

23 galBrake/Hoist Hydraulic Tank

145 L

38 galBrake/Hoist System

227 L

60 galTorque Converter/Transmission System

64 L

17 galSteering
Steering Standards

ISO 5010:2007

Steer Angle

40.5°

Turning Diameter – Front

17.6 m57.7 ftTurning Circle Clearance Diameter

20.3 m

66.6 ftCab
ROPS Certification Rating
770G WTR (Tractor)

Tractor ROPS Rating
35 122 kg

77,430 lb• ROPS (Roll Over Protective Structure) for cab offered by Caterpillar

meets ISO 3471:1994 ROPS criteria.

• Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level

II FOPS criteria.

• Note: Welding on ROPS or making modifications to the ROPS mayvoid the ROPS certification. Please contact Caterpillar OEM Solutions
if the application requires welding on the machine frame.

Suspension
Empty Loaded Cylinder Stroke Front

234 mm

9.2 inEmpty Loaded Cylinder Stroke Rear

149 mm5.9 inRear Axle Oscillation

8.9°

3

770 Off-highway Truck Bare Chassis Specifications
Dimensions
All dimensions are approximate.
87469352
11617181310 11121514192023

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770 Off-highway Truck Bare Chassis Specifications
Dimensions
1 Overall Length ** (does not include Wheel Chocks)

7449 mm

293.27 in

2 Wheel Base

3952 mm

155.59 in

3 Distance between Tires

2091 mm82.32 in4 Height to Top of ROPS **3958 mm

155.83 in

5 Rear Axle to Body Pivot

454 mm

17.87 in

6 Vertical Distance Between Body Pivot and Rear Axle

1023 mm40.28 in

7 Distance between Body Pivot and Hoist Cylinders - Horizontal

1224 mm

48.19 in

8 Overall Width

4971 mm

195.71 in

9 Engine Guard Clearance **542 mm

21.34 in

10 Distance Between Hoist Cylinders

1144 mm

45.04 in

11 Distance Between Body Pivots - Outer

784 mm30.87 in

12 Distance Between Body Pivots - Inner

551 mm

21.69 in

13 Body Pivot Bearing Width

180 mm

7.09 in

14 Frame Rail Width

139 mm

5.47 in

15 Distance Between Frame Rails

1006 mm

39.61 in

16 Cab Width

1691 mm

66.57 in

17 Distance between Rocker Pads

1200 mm

47.24 in

18 Height of the Cab from Main Beam

1695 mm66.73 in19 Overall Tire Width3693 mm145.39 in

20 Distance Between Main Beam and Cab Front

2208 mm

86.93 in

21 Cab Front Angle

28.5 degrees

22 Cab Rear Angle

10 degrees

23 Distance between Main Beam and Cab Roof

437 mm

17.20 in

24 Main Beam Width

283 mm

11.14 in

25 Distance Between Main Beam and Cab REAR

314 mm12.36 in

26 Rocker Pad Height268 mm

10.55 in

27 Main Beam Height80 mm

3.15 in

28 Distance Between Body Pivot and Main Beam

3273 mm128.86 in

29 Body Pivot Outer Radius

133.7 mm5.26 in30 Body Pivot Pin Diameter

75.6 mm2.98 in

31 Distance Between Body Pivot and Frame

112 mm

4.41 in

32 Distance between Main Beam and Body Pivot Pin

249 mm9.80 in33 Frame Slope Angle

4.1 degrees** These dimensions may vary based on tire size, pressure and load. All dimensions are for reference only and may change for different machine configurations.

5770 Off-highway Truck Bare Chassis Specifications
Standard and Optional Equipment
Standard and optional equipment may vary. Consult your Cat dealer for details.
Standard Optional
POWERTRAIN
Air-To-Air Aftercooler (ATAAC)
Air cleaner with precleaner (1)Automatic cold mode idle control
Electric startEngine idle shutdown
Ether started aided
Exhaust muffler
Global off-highway aluminium radiator
Braking System• Automatic Retarder Control (ARC)• Manual retarder (utilizes rear oil-cooled,multiple disc brakes)• Brake release motor (towing)• Dry disc brakes (front)• Front brake disconnect switch (front)• Oil-cooled, multiple disc (rear)• Brake wear indicator• Parking, secondary, service brakeTransmission:• 7 speed automatic powershift with electronic
clutch pressure control• Advanced productivity electronic control
strategy (APECS)• Automatic neutral idle
• Autostall• Second gear start
ELECTRICAL
Alarm backup
Alternator, 120 amp
Auxiliary jump start receptable
Batteries, maintenance-free, 12V, 1400 CCA combined
Electrical system, 25 amp, 24V to 12V converterLighting System:• Backup light (halogen)• Directional signals/hazard warning (front and rearLED)• Engine compartment light• Headlights with dimmer• Side profile lights• Operator access courtesy lights• Stop/tail lights, LED
Battery jump start
Breakers, electrical
Lockout switch
Ports, ET and VIMS
Service lockout switch (power without enginestart6•
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Standard Optional
OPERATOR ENVIRONMENT
Air conditioning/heat
Ashtray and cigarette lighter
Automatic tempature control
Coat hook
Cup holders (4)Diagnostic connection port, 24VEntertainment radio ready:• 5 amp converter• Speakers• Antenna• Wiring harness
Gauges and indicators panel:• Air cleaner service indicator – electronic• Brake oil temperature gauge• Coolant temperature gauge• Hour meter• Tachometer• Engine overspeed indicator• Fuel level• Speedometer with odometer• Transmission gear indicator
Hoist leverHorn
Light – dome
Light – courtesy
Load counter, automatic
Mirrors (heated)
Power port, 24V and 12V
ROPS cab, insulated/sound suppressed
Cat Deluxe Seat:• full air suspension• heated/ventilated• retractable 4 point seat belt with shoulderharness
Seat (training) with lap beltSteering wheel, padded, tilt and telescopic
Storage compartment
Sun visor
Throttle lock
Window, sliding, right side(Emergency exit)
Window, powered, left side
Windshield wiper (intermittent) and washer•
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770 Off-highway Truck Bare Chassis Specifications
Standard and Optional Equipment
Standard and optional equipment may vary. Consult your Cat dealer for details.
Standard Optional

Standard Optional

OTHER STANDARD EQUIPMENTOPTIONAL EQUIPMENT

Guards:• Driveline• Engine crankcase• Fan and air conditioner
Body down indicator

Auto Lube•

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Rear vision camera (WAVS)•

Wheel chocks•

Payload readout•

Center mounted rims•

Payload indicator (display)•

Ground level battery disconnect•

Ground level engine shutdown•

Ground level grease fittings•

Rims 13 x 33•

Secondary steering (electric)•

Tie down eyes•

Tow hooks, front/tow pin, rear•

Vandalism protection locks•

CAT TECHNOLOGY PRODUCTS
Product Link ReadyEconomy Modes (standard and adaptive)••

Payload System (TPMS)•

Vital Info Management System (VIMS)•Tire monitoring system (TKPH/TMPH)•Product Link •Traction Control System•

FLUIDS & FILTERS
Extended life coolant, -35° C (-30° F)
Grouped ground-level filters••7

For more information on Cat Truck Bare Chassis, contact OEM Solutions:
oem_solutions@cat.com | www.cat.com/oemsolutions© 2023 Caterpillar
All rights reservedMaterials and specifications are subject to change without notice. Featured machines in photos may include additionalequipment. See your Cat dealer for available options.
CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Corporate Yellow,” the “Power Edge”
and Cat “Modern Hex” trade dress as well as corporate and product identity used herein, are trademarks of Caterpillar
and may not be used without permission.

PEDJ1019-01 (11-2023)