The locking hubs on the Ford Super Duty will be discussed further down this page. This system includes an electronically controlled transfer case that allows you to shift the transfer case from a dash mounted switch. There will NOT be a 4A setting. Sends power to the rear wheels only and should be used for street and highway driving.
Provides optimal smoothness and fuel economy at high speeds. This mode is not for use on dry pavement. Intended only for off-road applications such as deep sand, steep grades, or pulling heavy objects. Refer to Shifting to or from 4L 4X4 low for proper operation.
Note: Do not perform this operation if the rear wheels are slipping or while applying the accelerator pedal. Note: You may hear some noise as the system shifts or engages; this is normal. You can move the control from 2H or 4H at a stop or while driving. The information display may display a message indicating a 4X4 shift is in progress. Once the shift is complete the message center can then display the system mode selected. The information display can display a message indicating a 4X4 shift is in progress.
The information display can then display the system mode selected. If any of the above shift conditions are not present, the shift should not occur and the information display can display information guiding the driver through the proper shifting procedures. If Shift Delayed Pull Forward displays in the information display, a transfer case gear tooth blockage is present. To alleviate this condition, place the transmission in a forward gear, move your vehicle forward approximately 5 ft 1.
For proper operation, make sure that each hub is fully engaged and that both hub locks are set to the same position both set to LOCK or both set to AUTO.
This system includes an electronically controlled transfer case with a high capacity clutch. The system is interactive with the road, continually monitoring and adjusting power delivery to the front and rear wheels to optimize traction. Note: The AdvanceTrac system has the ability to take over control of the transfer case clutch in 4A mode and disable it during driving maneuvers when necessary. Sends power to the rear wheels only.
In 4A mode the center differential is electronically-controlled and rear drive wheel bias. The on-board computer monitors for any sign of rear drive wheel slip loss of traction. It will not let the front driveshaft turn at the same speed as the rear driveshaft. You can move the control from 2H to 4A or 4H at a stop or while driving.
The 4WD system is engaged or disengaged by rotating the control for both front wheel hub locks from the FREE or LOCK position, then manually engaging or disengaging the transfer case with the floor-mounted shifter.
This mode is not intended for use on dry pavement. N Neutral — Only used when towing the vehicle. No power to front or rear wheels. It works on the mechanism of the one-way clutch. The job starts right from the driveshaft that applies torque and forces the hub to glide into the lock. As long as the transfer case stays in a four-wheeled drive, the hub remains in the locked position, too.
When you switch it to a two-wheeled drive, the clutch mechanism comes into play to release the hub by sliding back out. The automated front locking hubs are vacuum actuated with an actuator inside. You can take it as two cogs are spinning, and the vacuum pulls them closer to lock them in a four-wheeled drive. But wait! What if something happens to the vacuum line or an actuator? Something in the system has decided to stop working, and the only option left behind is getting out of the car and manually performing the operation.
You can do this, for sure. The choice is yours that which way you like to lock the hub down. Step ahead towards the front-wheel panel of your Ford.
You will see a small rotating switch that will decide the mode. If you want to lock the front-locking hub in place, you have to rotate the switch in a clockwise direction. For setting the auto mode, you have to move it counterclockwise.
This method is only applicable to the latest Ford model. Rust, mud, or some worn parts play their best role to prevent hub sliding and locking.
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