I have a 1989 F-150 Supercab 6 cly. 4X4 with manual locking hubs. One of the hubs is broken and I have to leave it locked in all of the time. When I go to the Warn site, they want to know how many splines it has??? Anybody know how I can find out?

 

Undo the 3 screws, pull assy out, mark 1 tooth, count number, that should give the num of splines, also wouldnt hurt to count axle splines, and to unlock the hub, remove the hub, remove snap ring on axle, remove the spline thing that goes on the axle, not to worry the lock nuts hold the hub on, you can put the outer lock back on to protect from dirt.