slip yoke
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Joined: Jun 1999
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slip yoke
Hey guys,
I've got a clunk or thump in my 90 F150 SC with 4.9L and E4OD whenever I put it in reverse or drive. Sounds kinda like u-joints, but there's no slop apparent when I get under there and muscle the driveshaft around. I've read about greasing a slip yoke to make a clunky driveline quiet down. Okay, I'll try anything once, but where and what is the slip yoke and how do I get it off to grease it? My truck has a two-piece driveshaft, with the hanger joint half-way in between.
I've got a clunk or thump in my 90 F150 SC with 4.9L and E4OD whenever I put it in reverse or drive. Sounds kinda like u-joints, but there's no slop apparent when I get under there and muscle the driveshaft around. I've read about greasing a slip yoke to make a clunky driveline quiet down. Okay, I'll try anything once, but where and what is the slip yoke and how do I get it off to grease it? My truck has a two-piece driveshaft, with the hanger joint half-way in between.
Elder User
Joined: Nov 1999
Posts: 780
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slip yoke
Coming out of the back of that center bearing is a splined shaft which directly inserts into the cylindrical part of that slip yoke. A zerk fitting is located on the circumference of the cylinder, about three inches rearward toward the U-joint.
Check those U-joints again, though. Sure sounds like them to me.
Ed
Check those U-joints again, though. Sure sounds like them to me.
Ed
Freshman User
Joined: Jan 2000
Posts: 34
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slip yoke
Make sure when you check the u-jonts the truck is in neutral without the e brake (block the tire)and on flat ground.If it is in park there is to much tension to properly check them.You can also check the slip yoke the same as the u joints if it has play lubing it wont help much.If it is wore out the spline on the shaft probably is too. It would also be a good idea to check the play in the rearend while your down there.
Good luck.
Good luck.
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