Ive looked it up and its under $10 for the seal itself. The slip yoke is the part of your driveshaft that connects the driveshaft to the output shaft on your transfer case or transmission. Hey Guys, So I have tranny fluid leaking from the U joint, and I have come to the conclusion that it is coming from my slip yoke Some of these slip yokes are vented (so they have a little hole), but mine is unvented, and it is still leaking Has anyone ever seen a leak from the actual yoke itself? If the output shaft-to-yoke o-ring is damaged/missing, transmission fluid has a straight shot back to the yoke and out the hole. It will be in the center behind the u-joint. John, i have a 2007 toyota tundra, 5.7. transmission fluid appears to be leaking a little on the slip yoke. 01-29-04 02:02 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. If the trans in your truck leaks fluid when the vehicle is parked uphill, fluid may be coming out of the weep hole due to failure of an output shaft O-ring. Leaking Transmission Fluid Out Of Slip Yoke, Re: Leaking Transmission Fluid Out Of Slip Yoke, http://forum.73-87chevytrucks.com/smforum/index.php?topic=32788.msg278327#msg278327, Quote from: philo_beddoe on March 28, 2016, 10:17:42 PM, Quote from: warhorse on March 28, 2016, 10:08:55 PM, SimplePortal 2.3.5 © 2008-2012, SimplePortal, "I'm here for a good time" -George Strait. The movement of the yoke just displaces air/fluid inside the transmission case. Well I check the yoke and mine does NOT have a hole in the mind of the yoke. This metal tube may have moved, or the o ring may be worn out causing it to leak. Recently I encountered a situation where fluid was leaking from the rear of the transmission. When the RTV is dry, reinstall and top off trans fluid as necessary. But, if you have a few drops showing up on the garage floor, and it only needs topped off now and then, it’s going to be safe. located at on the output shaft and slide the cup off. housing is intact. entire activity could ... there is a seal (like a frost plug) in the slip yoke ( u joint side) you will have to remove the … Most likely you're looking at transmission fluid from a leaking transmission. The rest is the reverse of removal. This time the drip is from the yoke itself. Mechanic's Assistant: What is the make/model/year of your car? If the 400 has a slip yoke, there is no seal on the output shaft. If you have a 400 and a bolt on yoke, there is an o-ring seal on the shaft. i have a 1995 mustang gt. Align the slip yoke and output shaft with the marks made at removal and install the yoke into the transmission extension housing. 1 Welcome, Guest. It isnt a huge leak, but there is a puddle of fluid that keeps reappearing after I clean it up. The only other seal is the one you can see at the end of the tail housing. While it may not be especially dangerous to drive a vehicle that is leaking transmission fluid, it is not a good idea because the vehicle may not run properly. Worked perfectly and I didn't have to rebalance anything. Then noticed it still leaking but now I can see plain as day it's coming out of the yoke and I'm stumped. the cup back on the shaft. I have had a leak from the extension housing seal and the slip yoke on my 2007 Toyota tundra 5.7l 2wd. This will make sure it is not installed out of balance. i then tested the new parts and noticed it was still leaking, so i removed the driveshaft again to have another look. now im beyond the warranty period. The hole allows air to vent as it plunges in and out, which helps prevent a bind or stop clunk condition. Most likely you 're looking at transmission fluid leak at the bottom of the yoke had a small hole the! 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