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Username Post: Transmission Slip Yoke leaking.        (Topic#56363)
mottster 
Member
Posts: 10

Reg: 01-29-04
01-29-04 02:30 PM - Post#382726    

Hey all...my first post here. Hoping you all can help me out.

Have a leak on the read side of my 4l60e transmission onf my 93 c1500. I know exactly that it's coming out of the weep hole in my transmission because i thought it was the rear seal at first but it turns out to not be that. Its been replaced and leaked after the first drive. Upon closer inspection i noted it was leaking off of the u-joint...which was being dripped onto out of the rear of the slip yoke. I know there is a weep hole there to allow the pressure that is produced by the slip yoke sliding in and out of the tail shaft. People say that if it's over filled that it will leak or whatever...but its been leaking for a couple weeks now and i know the fluid is low but it still leaks. It also leaks when the truck is not on....whether its facing up hill or down hill it doesn't matter.

My questions are the following...

Can there be some return lines or somethin internally that may be plugged which allow fluid to flow back into the rear housing?

My truck is lifted about 3 inches in the rear...i did not use angled blocks like i should of so the yoke is out a ways of the transmission....past the little notched out ring on the splines on the trail shaft...so the yoke itself rocks back and forth. Can this be a sign of a warn yoke?

I'm hoping that some angled blocks will correct the u-joint problem...but i had had my truck lifted for several months before this leak occurred...which was after i jumped the truck...so my last question is...is there some one way seal or such that belong in that hole which could of been blown out by the force of my truck's suspension being worked so hard?

Thanks for any information...i apologize for the length but i'm tired of the spots running all the way down the driveway



 
Jay727 
Old as Dirt Member
Posts: 5968

Reg: 09-02-01
Re: Transmission Slip Yoke leaking.
01-29-04 03:02 PM - Post#382727    
    In response to mottster

There is a metal tube tightly fit onto the tailshaft inside the tailhousing section, it has an o ring on it's inside that seals against the yoke. This metal tube may have moved, or the o ring may be worn out causing it to leak.
You can remove this tube and plug the weep hole in the yoke.
The yoke shouldn't have much play in it, it shouldn't wiggle much.
To fix it properly remove the driveshaft and use a micrometer to make sure there isn't excessive wear where the bushing rides on the yoke, you don't need to measure a specific size just use the ends as reference, it should be the same size from front to back. Then get a new bushing and seal. The bushing may be found at a local small type transmission shop for $5 or so, you can take your tail housing and have them change it if you want.
Then either plug the weep hole or get a new o ring and position the metal tube so it stays sealed on the yoke.

 
mottster 
Member
Posts: 10

Reg: 01-29-04
Re: Transmission Slip Yoke leaking.
01-29-04 06:00 PM - Post#382728    
    In response to Jay727

thank you for the very fast and informative response...i can tell already i'm gunna love this forum.

The sleeve and o-ring you're talking about...could you please be more specific about where it is supposed to be located? Is it more towards the rear of the tailshaft?

Anyway, like i said before, thank you a lot.

 
mottster 
Member
Posts: 10

Reg: 01-29-04
Re: Transmission Slip Yoke leaking.
01-29-04 06:53 PM - Post#382729    
    In response to mottster

Ok i thought of somethin else...do you know the same of the part? I can't just go get an extra bushing, seal and get that part from a trannie shop all together...even if i don't need a new o-ring there or whatever i'll get one. thanks.

 
Jay727 
Old as Dirt Member
Posts: 5968

Reg: 09-02-01
Re: Transmission Slip Yoke leaking.
01-30-04 01:10 PM - Post#382730    
    In response to mottster

The name of the part is the output shaft sleeve. Not to be confused with the speedometer gear sleeve.
If you're going to take it apart it might be best to install the driveshaft with the tail housing removed and position the sleeve so it's about 1/2 way or more onto the yoke, since your truck is altered and the driveshaft isn't in as far in as it normally would be.
Some applications don't have this sleeve, it might be better to plug the weep hole and remove your sleeve.

 
mottster 
Member
Posts: 10

Reg: 01-29-04
Re: Transmission Slip Yoke leaking.
01-30-04 08:32 PM - Post#382731    
    In response to Jay727

thank you for the information...once again...very informative and helpful...i'll call some trannie shops an dget prices and whatnot.

 
gchemist 
Senior Chevytalk Moderator
Posts: 21783
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
Re: Transmission Slip Yoke leaking.
02-01-04 01:35 AM - Post#382732    
    In response to mottster

Yoke leak info.

A dab of JB weld works pretty good too.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
mottster 
Member
Posts: 10

Reg: 01-29-04
Re: Transmission Slip Yoke leaking.
02-01-04 06:55 AM - Post#382733    
    In response to gchemist

hey...good link...thanks a lot.

When i was replacing my rear seal i swear that i didn't even see a sleeve???? Can it be pushed forward somehow?

 
Jay727 
Old as Dirt Member
Posts: 5968

Reg: 09-02-01
Re: Transmission Slip Yoke leaking.
02-01-04 07:15 AM - Post#382734    
    In response to mottster

Some don't come with the sleeve. Having a yoke with a weep hole would just be a mismatch of parts.
Anyway you won't see it until you remove the tail housing.

 
mottster 
Member
Posts: 10

Reg: 01-29-04
Re: Transmission Slip Yoke leaking.
02-25-04 03:50 AM - Post#382735    
    In response to Jay727

Hey all...just thought i'd let ya know that i got fed up with the leak so I just pulled out my ARC welder and fixed the problem, permanently...I'd rather spend 15 minutes and an inch of a welding stick over dealing with getting parts from a dealer. Anyway...trannie is dry and all is well. Thanks for all the help.

 
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