Volvo VNM Manuel de l'opérateur télécharger pdf (Page 281)

274 Engine Start and Operation

•

During cold weather, pay more attention

to the condition of the batteries. Test

them frequently to ensure sufficient

power for starting. A dead battery may

freeze.

•

Fuel cloud point is the temperature at

which wax crystals become visible,

which is generally above the pour

point of the fuel. To keep the fuel

filter elements from plugging with

wax crystals, the cloud point should

be no higher than the lowest ambient

temperature at which the engine must

start.

To prevent wear and possible damage to the

engine when it is cold, gradually bring it up

to operating temperature before operating

at high engine speeds or full load. After

starting and before moving the vehicle,

run the engine at 800 to 1000 rpm for 3 to

5 minutes. Operate at partial engine load

until the coolant temperature reaches 165

F

(75

C).

Engine Block Heater (Optional)

An electric engine block heater can be

installed for keeping the coolant hot when

the vehicle is parked. The heater is mounted

through the side of the engine block with the

heater coils in the coolant jacket. The heater

does not interfere with normal operation and

can be permanently installed.

The heater runs on 120 V and has an easily

accessible plug, located beside the driver

side door. The plug will hook up to a normal

extension cable.

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