Power Train

The Caterpillar power train gets the job done smoothly and quickly.


The eight-cylinder, turbocharged and aftercooled HEUI engine is built for power, reliability and economy with reduced sound levels and low emission.

Engine/Power Train Integration

Combining the electronic Engine Control Module (ECM) with the Caterpillar Transmission Chassis Controller (TCC) allows critical power train components to work more intelligently.

Oil-cooled Rear Brakes

Reliable braking lets the operator concentrate on the haul road.


The backbone of the Cat truck.

Body Options

Caterpillar builds a variety of rugged, durable bodies to perform in the toughest mining applications.

Operator Station

Control ease and comfort maximizes productivity.

Automatic Retarder Control (Optional)

Electronically controls braking on grades for improved engine and brake component life.

Traction Control System (Optional)

Electronically controls wheel slippage for improved performance.


The 769D is designed for versatility.

Serviceability/Total Customer Support

Purchase of a Caterpillar machine includes a total commitment to customer support.



Engine Model CAT 3408E TA-HEUI CAT 3408E TA-HEUI Less
Gross Power - SAE J1995 485.0 hp 362.0 kW Less
Net Power - SAE J1349 37.4 hp 34.0 kW Less
Net Power - Cat 68900.0 hp 31250.0 kW Less
Flywheel Power 485.0 hp 362.0 kW Less
Net Power - 80/1269/EEC 21.2 hp 16.2 kW Less
Net Power - ISO 9249 47.0 hp 75.0 kW Less
Displacement 1098.43 in3 18.0 L Less

Weights - Approximate

Operating Weight - Empty 68900.0 lb 31250.0 kg Less
Operating Weight - Loaded 150000.0 lb 68182.0 kg Less

Operating Specifications

Nominal Payload Class (100%) 35.41 tons 35.98 tonnes Less
Top Speed - Loaded 47.0 mph 75.0 km/h Less
Body Capacity - Struck 21.2 yd3 16.2 m3 Less
Maximum Capacity 37.4 tons 34.0 tonnes Less
Circle Clearance Diameter 65.0 ft 19.8 m Less
Body Capacity - SAE 2:1 30.7 yd3 23.5 m3 Less
Raise Time 7.5 Seconds 7.5 Seconds Less
Lower Time 8.3 Seconds 8.3 Seconds Less


Forward 1 7.83 mph 12.6 km/h Less
Forward 2 10.69 mph 17.2 km/h Less
Forward 3 14.48 mph 23.3 km/h Less
Forward 4 19.51 mph 31.4 km/h Less
Forward 5 26.41 mph 42.5 km/h Less
Forward 6 35.6 mph 57.3 km/h Less
Forward 7 48.28 mph 77.7 km/h Less
Reverse 10.31 mph 16.6 km/h Less

Final Drives

Planetary Ratio Planetary 4.80:1 reduction Planetary 4.80:1 reduction Less

Body Hoists

Pump Flow - High Idle 110.16 gal/min 417.0 L/min Less
Relief Valve Setting - Raise 2498.27 psi 17225.0 kPa Less
Body Raise Time - High Idle 7.5 Seconds 7.5 Seconds Less
Body Lower Time - Float 8.3 Seconds 8.3 Seconds Less
Body Power Down - High Idle 8.3 Seconds 8.3 Seconds Less

Weight Distributions - Approximate

Front Axle - Empty 49.8 % 49.8 % Less
Front Axle - Loaded 33.3 % 33.3 % Less
Rear Axle - Empty 50.2 % 50.2 % Less
Rear Axle - Loaded 66.7 % 66.7 % Less

Service Refill Capacities

Fuel Tank 140.0 gal 530.0 L Less
Cooling System 30.12 gal 114.0 L Less
Differentials and Final Drives 21.93 gal 83.0 L Less
Steering Tank 8.98 gal 34.0 L Less
Steering System (Includes Tank) 14.79 gal 56.0 L Less
Brake / Hoist System (Includes Tank) 73.18 gal 277.0 L Less
Torque Converter / Transmission System (Includes Sump) 19.02 gal 72.0 L Less


Standard Tire 18.00R33(E-4) 18.00R33(E-4) Less


Height - Top of ROPS 12.11 ft 3690.0 mm Less
Overall Body Length 24.98 ft 7615.0 mm Less
Inside Body Length 17.31 ft 5275.0 mm Less
Overall Length 26.37 ft 8039.0 mm Less
Wheelbase 12.18 ft 3713.0 mm Less
Rear Axle to Tail 8.34 ft 2541.0 mm Less
Ground Clearance 2.06 ft 627.0 mm Less
Dump Clearance 1.53 ft 465.0 mm Less
Loading Height - Empty 10.31 ft 3143.0 mm Less
Inside Body Depth - Max 4.56 ft 1390.0 mm Less
Overall Height - Body Raised 25.29 ft 7709.0 mm Less
Operating Width 16.63 ft 5069.0 mm Less
Centerline Front Tire Width 10.18 ft 3102.0 mm Less
Engine Guard Clearance 2.06 ft 627.0 mm Less
Overall Canopy Width 14.43 ft 4398.0 mm Less
Inside Body Width 12.0 ft 3658.0 mm Less
Front Canopy Height 12.97 ft 3952.0 mm Less
Rear Axle Clearance 2.02 ft 615.0 mm Less
Centerline Rear Dual Tire Width 8.1 ft 2470.0 mm Less
Overall Tire Width 11.76 ft 3584.0 mm Less
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