4X4 locking up when turning 1996 F250

[tonsoffun89]

Hello every one. Im new to the forum, I have a 1996 F-250 Etx cab short both 5 speed with the 7,3 turbo. I like the truck over all, but im having some big issues. The Biggest one when is it seams to have a klunk in the front end when taking of and when i hit the breaks. When i put it in four wheel drive and turn it almost seams like its binding up. Iv already broke the transmition housing 2 times, I put a new drive shaft and trans mount. The clutch was also bad(dual mass). All the u joints seam fine..... In the spring i plan on doing a dana 60 swap, just need to find SRW hub. Dose any one know if the hubs on my truck will work on the dana 60? Im also getting a stif break petal some times when driving and the parking break light comes on. Thank for any help.

[OBS F350]

To the stiff brake pedal and the parking light coming on, it will probably be your vaccume pump going out, takes like 15 mins to change, 3 bolts and a pulley puller. If I remember correctly around $100 for the new pump? Don't quote me on that I'm not 100% sure. As for your 4wd I can't tell by your description, I'm sure someone on here can help you with it, though. And Welcome to the forums!

[ryandamo]

The truck will bind a little if in 4x4 and turning very sharply, that is the nature of 4x4, if it is clunking when going straight your shackle bushings might be worn out.

Beleieve or not try also checking that the 2 bolts holding the left front fender on top are tight, I read on the Ford forum that quite a few found this to be the case, i doubt it though

[tonsoffun89]

Rear shackle bushings? Its coming from the front.... I know some binding is noraml is just seam like there is to much, thats why i was breaking cases.... Thank ill replace the vac pump and see if that fixes it.

[OBS F350]

And another way to tell if it's your vaccume pump is when you have the stiff pedal try to switch your air to vent or floor, if it stays on defrost it's your vaccume pump!

[bigcountrysg]

Are you using 4wd on dry pavement. If so then that is your problem. 4wd is not meant for dry hard pavement.

[tonsoffun89]

ok ill try that. No i use 4x4 either in the mud when i get stuck towing a trailer, or in snow or on ice.