1991 "U" boot?... Help
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1991 "U" boot?... Help
I just purchased a 1991 F150 and like the only thing that needs to be done to it are the back drums and the "U" boot?
Im not to sure what that is?
Isnt it part of the drive assembaly?
Someone told me it could be replaced for like $200.
Anyone ever had to replace that before?
Im not to sure what that is?
Isnt it part of the drive assembaly?
Someone told me it could be replaced for like $200.
Anyone ever had to replace that before?
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I think its the rear joint... it shakes when Im in mainly 1st and 2nd gear but once i get going to smooths out...
But yeah I think its mainly the rear one.
The local junk yard said they have one for like $20 does that sound about right?
But yeah I think its mainly the rear one.
The local junk yard said they have one for like $20 does that sound about right?
Post Fiend
Joined: Jan 2005
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U-joint is shorthand for universal joint. If you get under the truck you should see the driveshaft running from the transmission to the rear axle. There is a universal joint at the transmission end and another one at the axle end. With transmission in neutral and the parking brake on try shaking the driveshaft at each end, you should find which joint has play in it.
I wouldn`t have thought a replacement joint was a junk yard part.
Hope this helps.
I wouldn`t have thought a replacement joint was a junk yard part.
Hope this helps.
Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
U-joints are a wear item. You can't (ok, well, you shouldn't) use a junkyard for wear items. You wouldn't use junkyard brake parts, right? I hope? 
I order mine online. They are cheaper and much better quality than the stuff the local parts stores usually sell.
I order mine online. They are cheaper and much better quality than the stuff the local parts stores usually sell.
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Buying u-joints from a junkyard is a terrible idea. Esspecialy for $20. You can go to Schucks and get their cheapest u-joints for around $11. Like Lazy K said, get under the truck and find out where the play is coming from. Then drop out the driveshaft and replace the bad u-joint, or more preferably replace both u-joints on that driveshaft. I always replace all of the u-joints on a driveshaft if I have the money. When one goes, the others ussually are not far behind.
To replace, remove the clips with needle nose pliers and a screwdriver (to pry with), then use a socket similar in size to the bearing cups and a hammer to punch them out. Then gently punch the new ones in and replace the clips.
To replace, remove the clips with needle nose pliers and a screwdriver (to pry with), then use a socket similar in size to the bearing cups and a hammer to punch them out. Then gently punch the new ones in and replace the clips.
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I don't currently have a large enough vice, thats why I mentioned the hammer method. If you have a vice, that is the easiest way to do it without damaging anything. Autoparts stores that rent tools usually have a ball-joint press that will work on u-joints, Harbor Freight also sells this tool for around $35. I have used this type of tool to do ball joints and they work great.
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