CAT 777(07)®

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
20,000 gallons (75 700 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

DESIGNED FOR SAFETY

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

Improvements in accessibility with safe ground-level
access to fuel fill and daily maintenance points. Ensure
three points of contact when entering and exiting themachine with strategically placed walkways and grab
rails. Wet disc braking is standard on all four corners ofthe truck.

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.

WORK IN COMFORT

Completely redesigned cab for a whole new standard
in visibility, comfort, and productivity. The newoperator seat placement provides easier operationand comfort to the operator. Improvements invisibility gain enlarged views of the work area andits surroundings.

POWER TO THE GROUND
Put more power to the ground with a 7% increase intorque. Advanced Productivity Electronic Control
Strategy (APECS) transmission controls carry more
torque through the shifts, producing faster cycle times,
most noticeably on grades. Enjoy greater productivity
while using a more responsive Traction Control System(TCS).

STREAMLINED SERVICEABILITY
Ground-level refueling requires no climbing on themachine to fill the fuel tank. Resolve problems before
failure occurs with VIMS notifications. Hydraulic oil
filter life is extended to 1,000 hours under normal
operating conditions.

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)

777 (07) 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 C32B

Bare Chassis Weight

51 100 kg

112,656 lb

Rated Engine Speed

1,800 rpm

Payload113 550 kg

250,335 lb®

Gross Power – SAE J1995:2014

765 kW

1,025 hp

Front Axle Bare Chassis Weight

26 368 kg

58,131 lb

Net Power – SAE J1349:2011/ISO 9249:2007

711 kW953 hpFront Axle Payload

27 968 kg

61,659 lb

Rear Axle Bare Chassis Weight

24 681 kg

54,413 lb

85 637 kg

188,797 lb

Cylinders12Bore

175 mm6.9 inRear Axle PayloadStroke

220 mm

8.7 in85 L

5,187 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 whenthe engine is equipped with fan, air cleaner, muffler, and alternatorwith engine speed at 1,800 rpm.
• Power rating applies at 1,800 rpm when tested under the specified
condition for the specified standard.
• 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 2286 m (7,500 ft).
• Available as Tier 4 Final/Stage V equivalent, Tier 3/Stage IIIA equivalent,or Tier 2/Stage II equivalent emission standards.

Operating Weights – all configurations
Target Gross Machine Weight

164 654 kg

363,000 lb

Nominal Rated Payload (NRP)

91.7 tonnes

101.1 tonsOperating Weights – with Hoist Cylinders (LRC)

axle weights are not exceeded.

Tires
27.00R49 (E4)
• Productive capabilities of the 777 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 andconsult the tire manufacturer for proper tire selection.

Weight Distributions – Approximate
Front Axle – Empty
Front Axle – Loaded

33 %Rear Axle – Empty

48 %Rear Axle – Loaded

67 %Final Drives

Bare Chassis Weight

51 740 kg

114,067 lb

Differential Ratio

Payload112 914 kg

248,933 lb

Planetary Ratio
Total Reduction Ratio

Front Axle Bare Chassis Weight

26 698 kg

58,859 lb

Front Axle Payload

27 638 kg

60,931 lb

Rear Axle Bare Chassis Weight

24 990 kg

55,094 lb

Rear Axle Payload

85 328 kg

188,115 lb

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

50 578 kg

111,505 lb

Payload

114 076 kg

251,495 lb

Front Axle Bare Chassis Weight

26 098 kg

57,537 lb

Front Axle Payload

28 238 kg62,253 lb

Rear Axle Bare Chassis Weight

24 429 kg

53,857 lb

Rear Axle Payload

85 889 kg

189,353 lb

Operating Weights – with Hoist Cylinders (HRC)

52 %2.736:1
7.0:1
19.1576:1

BrakesBrake Surface – Front

40 846 cm2

6,331 in2

Brake Surface – Rear

102 116 cm

15,828 in2

Brake Standards

2ISO 3450:2011

Transmission
Forward 1

10.7 km/h

6.6 mphForward 2

14.6 km/h

9.1 mphForward 3

19.2 km/h

11.9 mph

Forward 4

26.7 km/h

16.6 mph

Forward 5

36.2 km/h

22.5 mph

Forward 6

48.6 km/h

30.2 mph

Forward 7

65.9 km/h40.9 mph

12.1 km/h

7.5 mphBare Chassis Weight

52 262 kg

115,218 lb

ReversePayload

112 392 kg

247,782 lb• Maximum travel speeds with standard 27.00R49 (E4) tires.

Front Axle Bare Chassis Weight

26 976 kg

59,452 lb

Front Axle Payload

27 369 kg

60,337 lb

Rear Axle Bare Chassis Weight

25 243 kg

55,650 lb

Rear Axle Payload

85 076 kg

187,559 lb

2777 (07) Off-highway Truck Bare Chassis Specifications
Body HoistsCat® Water Delivery System (WDS) - optional

Pump Flow – High Idle

458 L/min 120.9 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

15.0 seconds

Body Lower Time – Float

13.0 seconds

Body Power Down – High Idle

13.0 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

60gal

Torque Converter/Transmission System64 L

17 galSteering
Steering Standards

ISO 5010:2007

Steer Angle

40.5°

Turning Diameter – Front

17.6 m57.7 ft

Turning Circle Clearance Diameter

20.3 m

66.6 ft

Empty Loaded Cylinder Stroke Front

234 mm

9.2 inEmpty Loaded Cylinder Stroke Rear

149 mm5.9 inSuspension
Rear Axle Oscillation

8.9°

Cab
ROPS Certification Rating
777 WTR (Tractor)

Tractor ROPS Rating
60 365 kg

133,082 lb• ROPS (Roll Over Protective Structure) for cab offered by Caterpillar

meets ISO 3471:1994 ROPS criteria.

• FOPS (Falling Objects Protective Structure) meets ISO 3449:1992 Level

Operator selectable coverage

0.2-0.8 L/m2
(4 - 40 kph)0.5-0.2 gal/ft 2(3 - 25 mph)

Maximum water flow

3785 L/min

1,200 gal/min

Water per spray head (minimum)

130 L/min

35 gal/min

Water per spray head (maximum)

2270 L/min

600 gal/min

Spray head opening range (minimum)

1 mm

0.04 inSpray head opening range(maximum)

19 mm

0.75 inMaximum size debris flushed
through spray head

19 mm

0.75 in

4.5-9.1 m

15-30 ft

27.5 L

7.25 galSpray width per head(dependent on flow)
Spray system hydraulic tank capacity
Maximum number of rear sprayheads

7

Minimum number of rear sprayheads

3

Maximum number of front/side
spray heads

2

Minimum number of front/side
spray heads

0

Maximum water from cannon (idle)

2271 L/min

600 gal/min

Maximum water from cannon(high idle)

4732 L/min

1,250 gal/min

61 m

200 ftMaximum cannon spray distance

Wet water pump/hydraulic motor coupling• Coverage rates above 0.6 L/m2 may not be available at higher speeds
depending on head count and configuration.
• Opening is automatically controlled by the system to achieve
AutoMode Coverage or Manual Mode Flow Rate.
• AutoMode Spray controls water coverage automatically to thenumber of heads being used and ground speed achieved.
• Manual Mode allows the operator to set a water flow rate that isconstant regardless of ground speed.
• Spray Heads on competitive water distribution systems require tools
and maintenance to change flow and spray pattern. Caterpillar isthe only company to have variable active spray heads to regulate
water spray.
• Water flow is continually adjusted during operation to conserve
water and achieve desired coverage and flow rate.

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.

3

777 (07) Off-highway Truck Bare Chassis Specifications
Dimensions
All dimensions are approximate.
97846

3

510

2
11719

1411 1218

1315

16

20

23
25

26

2927303431
33

32428242122

777 (07) Off-highway Truck Bare Chassis Specifications
Dimensions
1 Overall Length8808 mm346.8 in

2 Wheel Base4557 mm

179.4 in

3 Distance Between Tires

1867 mm

73.7 in4 Height to Top of ROPS

4730 mm

186.2 in

5 Rear Axle to Body Pivot

591 mm23.3 in

6 Vertical Distance Between Body Pivot and Rear Axle

1393 mm

54.8 in

7 Distance Between Body Pivot and Hoist Cylinders - Horizontal

1893 mm74.5 in

8 Vertical Distance between main beam and engine hood

508 mm

20 in

9 Overall Width

6684 mm

263.1 in10 Engine Guard Clearance

912 mm35.9 in

11 Distance Between Hoist Cylinders

1987 mm

78.2 in

12 Distance Between Body Pivots -Outer

1634 mm64.3 in

13 Distance Between Body Pivots -Inner

1160 mm

45.7 in

14 Body Pivot Bearing Width

237 mm

9.3 in15 Distance Between Frame Rails

1324 mm52.1 in

16 Frame Rail Width

165 mm6.5 in17 Cab Width

1500 mm59.1 in

18 Height of the Cab from Main Beam

1619 mm63.7 in

19 Distance between Rocker Pads

2508 mm98.7 in

20 Overall Tire Width5223 mm

205.63 in

21 Distance Between Main Beam and Cab Front

2204 mm

22 Cab Front Angle

86.8 in17 degrees

23 Cab Rear Angle

25 degrees

24 Distance between Main Beam and Cab Roof689 mm

27.1 in

25 Distance Between Main Beam and Cab Rear

103 mm

4.1 in26 Main Beam Width

390 mm15.4 in27 Rocker Pad Height

78 mm

3.1 in28 Main Beam Height356 mm

14 in

29 Distance Between Body Pivot and Main Beam

3813 mm150.1 in30 Body Pivot Outer Radius

89 mm

3.5 in31 Body Pivot Pin Diameter

117.5 mm

4.6 in32 Distance Between Body Pivot and Frame

160 mm6.3 in33 Frame Slope Angle
34 Distance between Main Beam and Body Pivot Pin

7.5 degrees
361 mm14.2 in

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777 (07) 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 priming pumpEngine idle shutdown
Fuel filter / water separator
Quick Evac
Turbocharger (2)Automatic Retarder Control (ARC)- utilizes oil-cooled, multiple disc breaks•••••••••Braking System• Manual retarder (utilizes rear oil-cooled,multiple disc brakes)• Brake release motor (towing)• Front brake disconnect switch (front)• Oil-cooled, multiple disc (front / rear)• Brake wear indicator• Parking• Secondary• ServiceTransmission:• 7 speed automatic powershift with electronic
clutch pressure control Advanced productivity
electronic control strategy (APECS)• Automatic neutral idle
• Autostall• Second gear start
APECS software: ECPC, part throttle shifting
Electronic clutch pressure control
Body upshift inhibitor
Directional shift management
Downshift inhibitor
Neutral start switch
Neutral cost inhibitor
Reverse shift inhibitor
Reverse neutralizer during dumping
Programmable top gear selection
ELECTRICAL
Alarm backup
Alternator, 115 amp
Auxiliary jump start receptable
Batteries, maintenance-free, 12V, 190 amp-hour
Electrical system, 25 amp, 24V to 12V converterLighting System:• Backup light (halogen)• Directional signals/hazard warning (front and rearLED)• Headlights with dimmer• Side profile lights6•••••••••••••••••••••••••••••••• Operator access courtesy lights• Stop/tail lights, LED• Service lights
OPERATOR ENVIRONMENT
Air conditioning/heatAshtray 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, electricLight – dome
Light – courtesy
Load counter, automaticFoot rest
7-inch touchscreen display
Mirrors (heated)
Power port, 24V and 12V
ROPS cab, insulated/sound suppressed
Cat Next Generation Deluxe Seat:• full air suspension• heated• retractable 4 point seat belt with shoulder
harness
Steering wheel, padded, tilt and telescopic
Storage compartment
Sun visor, tinted / laminated glass
Throttle lock
Window, sliding, right side(Emergency exit)
Window, powered, left side
Windshield wiper (intermittent) and washer

Standard Optional••••••••••••••••••••••••••••••••••••••••••

777 (07) 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 EQUIPMENT

Controls:

Guards:• Driveline• Engine crankcase• Fan and air conditioner
Body down indicator• Factory installed•••••• Integrated into cab•

Water System Monitor:

Center mounted rims•

Ground level battery disconnect•

Ground level engine shutdown•

Ground level grease fittings•

Reservoirs (separate):• Brake/hoist• Steering• Transmission/torque converterRims 19.5 x 49

•
•
•
•

Supplemental steering (automatic)•

Tie down eyes•

Tow hooks, front/tow pin, rear•

Vandalism protection locks•

Wiggins fast fuel•Attachment zone•

CAT TECHNOLOGY PRODUCTS
Product Link Ready
Adaptive Economy Mode••

Object Detection•

Vital Info Management System (VIMS)••• Programmable spray configurations•• Automatic diagnostic messages•

Variable Hydraulic Pump Drive:• 1,200 gpm at speeds of 3 to 25 mph•• Auto shut-off•• Soft startup•

Stainless Steel Spray Heads:• Resists corrosion•• Maintenance free•• Patented design•

Independent Hydraulic Cooling System:• Minimizes overheating•

Water Cannon:• Hydraulically controlled•• Optional nozzles• Integrated joystick with cab controls••

WDS Camera System: includes three cameras,
three camera washers and cable assemblies•

Parts & service available through global Cat dealer network

Product Link •

Traction Control System•

FLUIDS
Extended life coolant, -35° C (-30° F)• Integrated into cab•

OPTIONAL EQUIPMENT
Rear vision camera (WAVS)•Wheel chocks•

Payload indicator (lights only)•Payload indicator (display)•Fire suppression arrangement•CAT WATER DELIVERY SYSTEM (WDS) - OPTIONAL ATTACHMENT

7

For more information on Cat Truck Bare Chassis, contact OEM Solutions:
oem_solutions@cat.com | www.cat.com/oemsolutions© 2023 Caterpillar
All rights reserved
Materials 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”
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and may not be used without permission.

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