Ford 2015 F-550 v.1 Manuel d'utilisateur télécharger pdf (Page 163)

LIMITED SLIP DIFFERENTIAL

This axle provides added traction on

slippery surfaces, particularly when one

wheel is on a poor traction surface. Under

normal conditions, the limited-slip axle

functions like a standard rear axle. The axle

may exhibit a slight noise or vibration

during tight turns with low vehicle speed.

This is normal behavior and indicates the

axle is working.

ELECTRONIC LOCKING

DIFFERENTIAL

Note: The electronic locking differential is

for off-road use only and is not for use on

dry pavement. Using the electronic locking

differential on dry pavement will result in

increased tire wear, noise and vibration.

The electronic locking differential is a

device housed in the rear axle that allows

both rear wheels to turn at the same

speed. The electronic locking differential

can provide additional traction should your

vehicle become stuck. You can activate

the differential electronically and shift it

on the fly within the differential operating

speed range. The differential is for use in

mud, rocks, sand, or any off-road condition

where you need maximum traction. It is

not for use on dry pavement.

The following conditions will affect the

electronic locking differential:

• On 2WD vehicles and 4WD vehicles in

2H (4X2) or 4H (4X4 High), the ELD

will not engage if the vehicle speed is

above 20 mph (32 km/h).

• On 2WD vehicles and 4WD vehicles in

2H (4X2) or 4H (4X4 High), the ELD

will automatically disengage at speeds

above 25 mph (40 km/h) and will

automatically reengage at speeds

below 20 mph (32 km/h).

• On 4WD vehicles in 4L (4X4 Low), the

ELD can be engaged at any speed and

will not automatically disengage.

Activating the Electronic Locking

Differential (If Equipped)

Note: Do not use electronic locking

differential on dry, hard surfaced roads.

Doing so will produce excessive noise,

vibration and increase tire wear.

Note: If the electronic locking differential

has difficulty disengaging, release the

accelerator pedal and turn the steering

wheel in the opposite direction while rolling.

For vehicles equipped with an

electronic shift 4WD system

E172924

Pull the 4WD control knob toward you.

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Super Duty (), enUSA

Rear Axle

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