Caterpillar redesigns and updates 777 off-highway truck


Caterpillar has announced a redesigned and updated 777 off-highway truck model, the 777G, with improved mining and large earthmoving applications, fuel efficiency, productivity and operator amenities.

Replacing the 777F, the new G Series has a rated payload of 98.4 tons, with a standard-body volume (SAE 2:1) of 64.1 m3.

Powered by a Cat 32 ACERT US EPA Tier 4 Final/EU Stage V emissions standard-compliant engine, it delivers 1,025hp (765kW), engine torque has increased by 7% compared to the outgoing model, and reaches a top speed of 67.1km/h.

The engine also has a number of fuel-saving features. These include a mode that allows the transmission to intermittently shift to neutral when idling in a forward gear to avoid stalling the torque converter and increasing engine speed. Another engine mode can stop the engine when the truck idles in park for more than a pre-set interval, while speed limiting provides an alternative to gear-limiting for enabling fuel-efficient engine speeds during travel.

Featuring a redesigned cab, entry and exit has been simplified while new seats for the operator and trainer have been added. A new console with an integrated hoist-and-shift lever reduces fatigue for the operator, while improved visibility of the work area and machine controls are enhanced with an object-detection system.

Safety has been further improved for the operator with roll-over and falling object protective structures integrated into the cab design. Wet-disc brakes are fitted to each wheel, offering parking brake and slope-holding capabilities.

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James joined the Industrial Vehicle Technology International team in 2017. Previously he was Assistant Editor on an engineering title for several years and has worked for various other trade magazines before that. James is happily married and has a young daughter and son who keep him busy.

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