your still going to end up removing the axle shaft to bolt everything up. getting the axle shaft and the slip yoke to slide toghter is going to be a pain the ass.
just grab the knuckle out. but chances of good ball joints and bearings is going to be slim out of a wrecker. Same with the pivot bushing if you got the whole beam.
3 diffrent tyeps of knuckles out there,bascilly comes down to what brake calipur mounting, if the truck/explorer has 4 wheel ABS or not.
slide pin and no ABS
slide pin with ABS
slide pin has single pistion cal's
bolt on dual piston cal's 95-97 ranger with abs.
here is a pic of the slide pin type. these will be found on the 90-94 D-35 ranger and 91-94 explorer.The can come with and with out ABS.
the slide pins
If you happen to run across one with auto hubs, rember the little pin that locks the bearing nuts on the auto must be removed before the nut will losen.
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If you want step by step pics on how to take everything apart down to the knuckle. I have step by step pics on my photbucket I can post up if it will help you.
the reason I can think of to look up wear the brake pad mounts in the inner ear of the knuckle on the slid pin type, is to inspect it for wear and cracks.
Some people lose or dont put back in the anti rattle slping clip on the brake pad and it can do a nummber on the ear of the knuckle. Also if your in the rust belt that area may really take a "weathering"..