I'm leaning towards a defect of some sort with the yoke. ? I received the advice to remove the yoke and plug a small hole with JB weld. Take the screwdriver and reach down into the center of the yoke (where the splines are) and flatten out the epoxy. I am going to remove the yoke from the truck and test it for leaks. I dont really think the differential moved backwards a lot but there is a slight chance there was movement given the old springs where pretty much done and the new ones corrected a nasty lean the vehicle had to one side. Not a bad idea, but just slapping a balancer on the end of the yoke and calling it good instead of just balancing each driveshaft seems like a cut corner. It has a 4" lift, 1 1/2" shackle, and a 3" body lift. I also replaced the bushing and installed pump rub kit, even though I had no issues with rub. JavaScript is disabled. My problem is, I am leaking fluid out of the center of the yoke behind the transfer case. stopped after i dropped it. I have replaced the rear oil seal and even put in a brand new yoke and it is leaking through the vent hole in the middle of the yoke and soaking the u joint. Slip yoke slinging leaking ATF, transmission fluid, transfercase oil Fix, ... Easy Diff and Gearbox Yoke Repair- Speedi Sleeve - Duration: 1:59. mine is still gone. I cleaned it up, but it keeps leaking. I have a 90 Sahara with the np231 transfer case. (This is just a visual reference, you want to remove the snap rings on the drive shaft caps) hello, i just replaced my seal on the extension housing at the yoke.your problem according to you is not that seal.there is what they call a FREEZE PLUG that will leak where you said up in the yoke area.do a search here on FREEZE PLUG LEAKING.i know someone wrote in on this. Today we are replacing the transfer case, rear driveshaft, and slip yoke seal. I have fixed leaking trans slip yokes with JB Weld. if said whore was covered in adams soap sam woulda taken her to poundtown. Appears they cut the splines in the slip yoke and then put a welch plug (or some sort of flat plug) on the end to seal it. The JB weld will flow out smoothly and harden providing an oil resistant seal. This can be accomplished by removing the yoke from the drive shaft, cleaning the area thoroughly; mixing the two-part JB weld and completely covering the plug area face up. The slip yoke seal is the seal that allows that yoke to move in and out while still keeping the transmission or transfer case fluid sealed inside. This will let the driveshaft yoke go all the way in without it hitting the end of the cup. 94 YJ,, Warn Rock Sliders,GPS, Flowmaster Exhaust,Cd Player,Hi Lift,7500lb winch,full width Dana 44 front, 9inch Rear,soa,Teraflex supershort sye, 38X12.50-15 swampers, 5.38 gears,Detroit Lockers, Cobra CB, Handthrottle. This evening it is still leaking. my napa friend said his was a FREEZE plug leaking. I came up with another way to seal the leak if it is indeed leaking. Also be careful you don't damage the seal by banging the slip yoke around into the seal. If it is the yoke that is leaking I am going to try to fix it. Replace the driveshaft, prior to placing the slip yoke in lube it and the inner edge of the seal with a little trans fluid. I have a 90 Sahara with the np231 transfer case. 2014 GMC Sierra Z71|All Terrain|5.3L|3.42|Double Cab|Corsa|Blackbear|RX|Bilstein, http://www.automotiveforums.com/vbulletin/showthread.php?t=466157&highlight=racquetball, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Re: Transmission Slip Yoke leaking. I am leaking what appears to be transmission fluid where the tranny meets the drive shaft. If that is what is leaking buying a new yoke will solve the leakage. Wondering if anyone has seen this before or heard of it. The plug will … Got GM dealer to warranty seal, replaced it, still had bad leak. 15, B) that is used on 4WD vehicles. It starts dribbling a lot when the car sits for more than a week or two. Yes the nickel plated slip yoke would be the fix from GM I had a '97 suburban that did the exact same thing. Clean the yoke thoroughly with carb cleaner and dry it with compressed air. Hel98, I've seen the hole you mention on 2 piece driveshafts before. SHARE POST #8. :hmm: interesting. For a better experience, please enable JavaScript in your browser before proceeding. This stopped my leak. You will see a round plug in the yoke it looks like a frost plug. My 04 doesnt clunk but my old truck was annoying as fuck. So i found this thread on another site, and i found it interesting on how some people fixed their slip yoke clunk... Is it just me or is that site taking forever to load? mine was doing that I put a dab of RVT over the hole and it never leaked again, I dont even know why that hole is there, the t case iself has a big vent tube on top. This will help lock the epoxy in place and also seal off the hole inside and out. JavaScript is disabled. These seals tend to leak more often than others because they are sealing against the rotational and lateral movement of the shaft. 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 99 Posts . To me it looks like the transfer case fluid is some how going through the yoke and leaking onto the u joint which is then causing the fluid to go everywhere under neath. Leaking at tailshaft seal. grease only seems to last a week or 2 for me before it's clunking again. lifted back up, still no clunk. 15, A) with a non-vented slip yoke (Fig. If your problem is truly a slip yoke issue and they did not replace the yoke during the repair you would still be having a leak. For a better experience, please enable JavaScript in your browser before proceeding. The rest is the reverse of removal. I parked my truck (86 M100 last night and this morning I found a puddle of fluid that is leaking from the shield on the transfer case. If fluid is leaking out of the hole in the vented slip yoke on a 2WD truck, the propeller shaft oil seal sleeve has failed and needs to be replaced, not the slip yoke. Remove the drive shaft. The seal is dry even on the inside of the dust boot. if its leaking out of the yoke the t-case must be overfilled with fliud. Part 2 if changing the yoke is needed then is the GM yoke that is like 350 worth the extra money VS Merchants for like 140? 6) Let the epoxy cure with the yoke straight up. Stand the drive shaft with the yoke pointing up and spray carb cleaner into the splined end of the yoke. You just don't wanna put much extra pressure on the ujoints or pinion bearings. You can call the dealer and have them get you a new one. As long as it doesn't put the shaft under much compression it should be good. There are a few options. wildethang.1734, Oct 6, 2012. FOR SALE 2008 Chevy Silverado LT 1500 ECSB Z71 5.3. bouncy balls work great they are smaller racquet ball is WAY too big. There should be a hole in the middle of the Y or the yoke. they apparently released a harder slip yoke that was plated or something a few years ago, but it was like $200+ i want to fix mine and the slag in the driveshaft. My understanding is that replacement of the seal will not provide a temporary fix to the leak if the problemm is truly the defective slip yoke. The early slip yokes have a small hole to release pressure or vacuum as the yoke moves in and out on the shaft. Start by removing the snap rings with needle nose pliers. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models! Pull the drive shaft out, remove the u joint so you can work on the yoke that goes into the trans. Got it all back together, still leaked at yoke, bad. I stuck a hacky sack in mine and it didnt work :think: A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Was it recently serviced with a fluid change? Truck Mechanic Basics 4,093 views. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. ---Chuck Finding Leak & Tail Shaft Housing Repair Silverado - YouTube Try to get the output shaft in the center of the cup as best you can. I'm almost 100% certain that the leak is coming through the propeller shaft slip yoke plug, in the center of the yoke, which is specifically what this TSB is supposed to cover. Not sure if your yoke is different or not due to the different transmission but this may be the fix. Any suggestions? 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. In addition, be sure not to replace a vented slip yoke (Fig. If the ykr and trans applications aren't compatable, make sure there is no seal inside, remove trans tailhousing and make sure it has no seal or sleeve. It has a 4" lift, 1 1/2" shackle, and a 3" body lift. So, I finally got around to reading the TSB, and have printed it out. The leak has been ongoing for a long time now even before replacing leaf springs the yoke was dripping fluid. Just fought this on my '06. You can try applying silicone RTV around that cap , but I think it won't last. You don't need much epoxy on the inside--just flatten out the tiny amount poking through. GM has a nickel plated slip yoke kit, comes with yoke, u-joint, and seal. Weld up the hole, grind one spline on the output shaft about half off to allow pressure to bleed out of the yoke. Look for seepage from the plug on the U-joint side of the yoke. Lower the truck and check/top-off the trans fluid. I cant weld that area shut because there is a balance weight on the yoke that looks like a harmonic balancer. To help from ruining another O-ring, use a little tranny fluid on the outside of the … Funny thing is, it doesn;t leak much when the car is being driven daily. Pop out the plug by inserting a punch in the splined side of the yoke and tap on it with a hammer. ive heard even with the nickel plated slip yoke, that people still have problems with the clinking.......imho, im gonna grease up my current yoke really good tomorrow. My problem is, I am leaking fluid out of the center of the yoke behind the transfer case. I'll melt the rubber if I weld it. It isnt a huge leak, but there is a puddle of fluid that keeps reappearing after I clean it up. might have to try this. I have replaced the rear oil seal and even put in a brand new yoke and it is leaking through the vent hole in the middle of the yoke and soaking the u joint. My yoke seal is leaking, Just wondering if changing the slip yoke for rear driveshaft is the fix for the leaking seal in it or can you get a seal to replace? Then use a torch to heat and melt the plastic, until it flowed, all the while working the yoke around to insure complete coverage of the bottom of the inside of the yoke. It's on the front yoke of the rear shaft and lets the the slip joint "breathe". It's only leaking on an up hill slant at this time because its probably low on fluid. A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! With the drive shaft on the table, remove the u joint and the leaky slip yoke together. they apparently released a harder slip yoke that was plated or something a few years ago, but it was like $200+ i want to fix mine and the slag in the driveshaft. The rear driveshaft seal is dry. Interesting. it did it when i got it, greased it, it stopped for a few months, then came back...dropped it, no clunk since. You can also braze up the leaking area, but you may have to remove the yoke from the U-joint before doing this. This required a longer yoke body with an un-splined area at the front, that slipped over a plastic multi-lip seal mounted on the output shaft up near the speedometer gear. Discussion Starter • #1 • Nov 7, 2018. , and have them get you a new yoke will solve the leakage rear shaft and the. 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