Volvo VNM Manuel de l'opérateur télécharger pdf (Page 316)

Brakes 309

Vehicle Speed Retarding Devices

DANGER

When operating a tractor bobtail (without

a trailer) or on slippery roads, the engine

brake switch must be in the “OFF”

position. Failure to follow this instruction

can result in loss of vehicle control and

serious personal injury or death.

Note: The vehicle ABS will automatically

turn off the vehicle speed retarding device,

IF one of the sensed rear wheels is locking up

as a result of vehicle speed retarding device

operation. The vehicle speed retarding

device will be turned back on automatically

when the wheels become unlocked. Consider

switching to a lower braking level if this

occurs frequently.

A vehicle speed retarding device (such as a

“Intebrake,” “C-Brake,” “Exhaust Brake,”

etc.) is not intended to bring the vehicle to

a stop. A vehicle speed retarding device

is only intended to retard the vehicle speed

under certain conditions.

Note: If a Volvo engine is equipped with

a Volvo Engine Brake, the brake will not

operate with full power until the engine

coolant temperature has reached 110

F

(45

C).

Note: It is normal for there to be a slight

delay in the application of a vehicle speed

retarding device. When using devices of this

type, be sure to think ahead and analyze

conditions in order to use the device properly.

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