I need help with my F-150 XL 1993 model in removing the front hub

 

Is your truck 2 or 4wd ?

 

it's a 4WD automatic

 

A spanner wrench is used to release the ratchet type locknut that holds the hub on the spindle . Most tool supply trucks or auto parts retailers carry the spanner socket . Is that the problem or have you got to the point of releasing the locknut ? The auto & manual locking hubs are slightly different . If you are to the point of loosening the locknut , apply inward pressure & loosen the locknut with the spanner socket using a 1/2 ratchet .

 

I did remove the grease cap, the snap ring but could not remove the splined driving hub so i could get into the wheel bearing adjusting nut.

 

I assume you are planning to replace your warped brake rotor. Three very important things to know:
When you drive out the lugs be careful not to peen the end so the nut will not fit again.

When you install the new rotor onto the hub, drive the lugs through very carefully (align the splines). They probably will not seat completely. Then install the rotor/hub onto your rim (before the hub is on the axle) and use the lug nuts to pull the lugs tight. Use a torque wrench and apply torque to all lugs in stages until you reach the full torque. This will pull the lugs tight without warping your brand new rotor. Get a friend to hold the tire.

When you re-assemble the hub onto the axle, be very careful to make sure there is a slight amount of axial play after you torque the lock nut. The lock nut will squeeze onto the inner nut and eliminate any play that was there before you installed the lock nut. The play is necessary to provide slack for when the bearings, etc. heat-up and expand.

Amazingly, these items are not mentioned in the shop service manual.

 

There is a snap ring on the end of the axle that has to be removed as well as a lock ring that can be hard to see . It will prevent the hub body assembly from being removed .