Slip Yoke Revisited
06-20-2005, 04:35 PM
#21
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Well after driving about 50 city miles without the zerk there is definitely a good difference with the way it drives.
The slip yoke now is completely transparent, where as before I was feeling effects of the “airtight” situation described above, just could not put my finger on it, figuratively speaking.
The slip yoke now is completely transparent, where as before I was feeling effects of the “airtight” situation described above, just could not put my finger on it, figuratively speaking.
06-20-2005, 05:18 PM
#22
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4RUNR,
I occassionally feel an 'bump' or two from underneath as the truck goes through its suspension travel. As mentioned earlier, I've long thought that this may have something to do with the rear shaft, but never dove into it.
What is the story with the seal/plug at the yoke end? Is is permanent until it blows open? Could one substitute some sort of breather/weeping device in its place, while still retaining the integrity of the grease-filled chamber? I can see it now, posted under forum members' signatures, "Drive shaft breather mod"....
Andreas
I occassionally feel an 'bump' or two from underneath as the truck goes through its suspension travel. As mentioned earlier, I've long thought that this may have something to do with the rear shaft, but never dove into it.
What is the story with the seal/plug at the yoke end? Is is permanent until it blows open? Could one substitute some sort of breather/weeping device in its place, while still retaining the integrity of the grease-filled chamber? I can see it now, posted under forum members' signatures, "Drive shaft breather mod"....
Andreas
06-20-2005, 05:49 PM
#24
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Not sure if this help but when I grease mine up the old grease comes out the splines..now any way...when I first picked it up I think the thing was frozen and I had to remove the shaft take it apart and clean all the gunk......
06-20-2005, 05:54 PM
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aowRS, that's exactly what I was feeling too, now it's completely gone.
The diagram I drew above is accurate, and I have no idea how a big enough breather hole could be built in without any grease escaping.
I'm a little confused by the whole design too. By looking at it, the splines and the grease are all inside an air tight chamber, that and the tolerances and I would have guessed it as a lifetime lubricated part if some quality grease went in there.
I don't see any issues with taking out the zerk permanently. If water gets in there it will be expelled by centrifugal forces, and I would not worry about contaminating the grease for at least 5-10k miles with on-road use. Even if let go it would most likely outlast the vehicle anyway.
The diagram I drew above is accurate, and I have no idea how a big enough breather hole could be built in without any grease escaping.
I'm a little confused by the whole design too. By looking at it, the splines and the grease are all inside an air tight chamber, that and the tolerances and I would have guessed it as a lifetime lubricated part if some quality grease went in there.
I don't see any issues with taking out the zerk permanently. If water gets in there it will be expelled by centrifugal forces, and I would not worry about contaminating the grease for at least 5-10k miles with on-road use. Even if let go it would most likely outlast the vehicle anyway.
06-20-2005, 05:58 PM
#26
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Certainly. But it would be great to find a solution to this that allows periodic greasing as well as proper breathing for the slip joint.
Andreas
Andreas
06-20-2005, 07:03 PM
#27
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allot of american made trucks including semi's have a small hole drilled in the cap that covers the end of the slip yoke, i dont see why you couldn't drill a small hole, 1/16" would be a good size..
06-21-2005, 12:12 PM
#28
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Please check this link:
http://www.4x4wire.com/toyota/mainte...tml#driveshaft
http://www.4x4wire.com/toyota/mainte...tml#driveshaft
06-21-2005, 12:16 PM
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Not sure if this would help - check this link:
http://www.4runners.org/articles/zerk/
http://www.4runners.org/articles/zerk/
06-21-2005, 12:17 PM
#30
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[QUOTE]Please check this link:
http://www.4x4wire.com/toyota/maint....iveshaftQUOTE]
I don't think there is any dispute as to how one lubes the drivetrain. The question is whether or not the rear slip joint can function properly without some method of 'breathing'.
Andreas
http://www.4x4wire.com/toyota/maint....iveshaftQUOTE]
I don't think there is any dispute as to how one lubes the drivetrain. The question is whether or not the rear slip joint can function properly without some method of 'breathing'.
Andreas
06-21-2005, 01:05 PM
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Originally Posted by superjoe83
allot of american made trucks including semi's have a small hole drilled in the cap that covers the end of the slip yoke, i dont see why you couldn't drill a small hole, 1/16" would be a good size..
I have enough confidence in this to volunteer to be the guinea pig. I'll run without the zerk from now on.
06-22-2005, 03:37 AM
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This is one of those interesting posts that you don't want to forget about, cause you never know when you might encounter the same wierd problem.
Keep us updated.
Keep us updated.
06-22-2005, 04:44 AM
#35
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Driving around last night, I realized when it is that I typically feel an odd 'bump' from the rear.
Speed bumps.
I always go slow over them, and typically feel a 'jounce' or 'bump' as the suspension compresses. Since the the slip joint is forced to compress quickly at this point, the air cushion within the cavity needs to be quickly expelled. I never feel this during regular driving, and especially not with a heavy load.
Andreas
Speed bumps.
I always go slow over them, and typically feel a 'jounce' or 'bump' as the suspension compresses. Since the the slip joint is forced to compress quickly at this point, the air cushion within the cavity needs to be quickly expelled. I never feel this during regular driving, and especially not with a heavy load.
Andreas
06-30-2005, 10:22 AM
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Well I finally got up the energy to go out and buy a grease gun and some slick 50 grease.
I lubed the slip yoke and the other 50 zerks in the driveshaft....
Wow talk about a difference. That thing must of been dry as a bone. Lubing it got rid of all my axle wrap clunk and it shifts ALOT smoother. Before it was starting to feel like I had a shift kit in the there. Although the shifting still isnt as smooth as some trucks it at least feels like it did when I bought it.
I wasnt really sure when to stop on the slip yoke so I just kinda kept going until I felt like there was enough. There wasnt any coming out anywhere and it didnt get hard to pump like the u-joints do but I guess I put enough in from the results.
Anyway I just figured I'd share my little story...
I lubed the slip yoke and the other 50 zerks in the driveshaft....
Wow talk about a difference. That thing must of been dry as a bone. Lubing it got rid of all my axle wrap clunk and it shifts ALOT smoother. Before it was starting to feel like I had a shift kit in the there. Although the shifting still isnt as smooth as some trucks it at least feels like it did when I bought it.
I wasnt really sure when to stop on the slip yoke so I just kinda kept going until I felt like there was enough. There wasnt any coming out anywhere and it didnt get hard to pump like the u-joints do but I guess I put enough in from the results.
Anyway I just figured I'd share my little story...
06-30-2005, 11:15 AM
#38
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Well, here is the 9th day update. It is still smooth and no clunk, without any water or dust problems, though one raccoon problem. It crawled into the driveshaft and made squeaking noises each time when going over a bump. I tried using a carrot to lure it out, but that didn't work; had to use a toilet plunger to get it out. It's all good now.
