I understand there is a seal or plug that is the frequent culprit on the slip yoke. We'll walk you through the most common points to identify automatic transmission leaks and let you know what you can do to make it … 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. They are sometimes split in half where the engine block meets the oil pan or have a cover at the bottom or top where you can remove a small plate and peek inside the bell housing. you will be able to see it with the driveshaft removed by flipping the yoke to the drained out. The seal is dry even on the inside of the dust boot. Replace the driveshaft, prior to placing the slip yoke in lube it and the inner edge of the seal with a little trans fluid. Place a jack stand under each corner of the frame to evenly distribute the weight. Align the slip yoke and output shaft with the marks made at removal and install the yoke into the transmission extension housing. same location. If you have a 400 and a bolt on yoke, there is an o-ring seal on the shaft. the rear transmission seal was leaking, so i removed the driveshaft and replaced it. Try to get the output shaft in the center of the cup as The seal coming out of the transmission was dry so I believe the fluid is coming out of the hole in the yoke. I talked to a few tranny guys and they told me to just weld up the hole. Re: Transmission Slip Yoke leaking. there is your output shaft seal. This evening it is still leaking. Pull your driveshaft, then either carefully slip it over output shaft, push in with thin blunt object until you feel it slip into its groove. Worked perfectly and I didn't have to rebalance anything. I had good luck loading deep inside of slip yoke with chassis grease, kept the fluid from leaking out. Thanks. Yeppers, definitely the slip yoke. Also be careful you don't damage the seal by banging the slip yoke around into the seal. Any help would be much appreciated. Ive looked it up and its under $10 for the seal itself. If the 400 has a slip yoke, there is no seal on the output shaft. Hello, I have a '87 v10 700R4 NP208 truck that's leaking trans fluid out of the rear driveshaft slip yoke and can not for the life of me figure out why. When in doubt, don’t drive a vehicle that you don’t feel comfortable driving, especially if you are smelling a burning smell. i have a 1995 mustang gt. a weep hole that relieves pressure buildup caused by the yoke moving back an forth as the Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. 07 Tundra 2wd 6 spd 5.7L: I have tranny fluid leaking from the slip yoke that enters the transmission. Welcome. 25. ... To help from ruining another O-ring, use a little tranny fluid on the outside of the yoke before sliding it back into the transmission. the cup back on the shaft. Most transmission shops should be able to fix you up with one. Gil’s Garage. 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. How would transmission fluid be leaking from inside the rear transmission yoke and dripping off the u-joint on a 93 - Chevrolet 1993 K1500 question. 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. Your Yoke will not leak Trans Fluid, only your Transmission will do that, and that's if the Seal is Bad. Mark the housing is intact. location of the rear u-joint on the pinion yoke at the rear so you can install it in the First thing. You should see something similar to the above photo depending on now im beyond the warranty period. Transmission fluid can be surprisingly colorful, especially if you've never seen it before and don't know what to expect. the end of the cup. Now unbolt the extension housing from the transmission. What would cause transmission fluid to leak from the driveshaft yoke on a 95 Chevy Blazer 4wd 4.3 vortec vin code w? 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. They rely on a yoke that is completely sealed. Check also the transmission fluid cooling lines, where the two lines exit the transaxle case, and go to front of car to an external cooler mounted in front of radiator, or going into a separate reservoir in the radiator. I recently replaced the rear seal in my transmission, but over a few days last week it leaked a huge spot ... just the ones with the weep-hole in slip yoke. Search Fixya. Mechanic's Assistant: Have you ever replaced the gaskets? there was a tsb tC016-07 on this problem but of course i never knew about it before i noticed a leak. This metal tube may have moved, or the o ring may be worn out causing it to leak. Gil Baumgartner CTCI Authenticity Chairman. To remove the extension housing, you will need to remove i then tested the new parts and noticed it was still leaking, so i removed the driveshaft again to have another look. Plug the transmission to prevent fluid leakage. Thank you for your time. Is your car leaving red stains beneath your vehicle? Its not a output shaft seal. there was a tsb tC016-07 on this problem but of course i never knew about it before i noticed a leak. Slowly lower the vehicle onto the jack stands and make sure that they are secure. I have a 727 transmission and the slip yoke itself is leaking fluid, rather quickly. Some GM transmission yokes, primarily those used on trucks, have To install: Lubricate the yoke splines with suitable grease. will need to pry the u-joint out of the rear yoke a little. Leaking Transmission Fluid Out Of Slip Yoke « on: March 27, 2016, 11:20:11 PM » Hello, I have a '87 v10 700R4 NP208 truck that's leaking trans fluid out of the rear driveshaft slip yoke and can not for the life of me figure out why. Never worry about it again. The color of your transmission fluid is one of the best early warning signs of transmission problems, so it is important to check your own fluid or have it checked as part of your regular vehicle maintenance program. 4L60 Leaking from Driveshaft Yoke. The transmission shifts … The yoke seals up against that o-ring, stopping fluid from reaching the very end/back of the tail housing. Mechanic's Assistant: What is the make/model/year of your car? Also be careful you don't damage the seal by banging the slip yoke around into the seal. They rely on a yoke that is completely sealed. How hard is it to replace the output shaft seal? Then noticed it still leaking but now I can see plain as day it's coming out of the yoke and I'm stumped. How hard is it to replace the output shaft seal? If it's leaking from that weep hole in the yoke, it's because there's no O … Technicians diagnosing a transmission fluid leak from the rear of the transmission on 2014-2016 Silverado and Sierra 2WD models may notice the fluid is coming from the plug in the propeller shaft slip yoke. Replace the O-ring and slide Login with username, password and session length. ... pulling the rear mount, driveshaft, draining fluid, removing tailhousing, putting it back together and … 1/16" hole drilled through the plug. Some slip yokes have a weep hole and sometimes they leak. Access Lower the truck and check/top-off the trans fluid. It's not oil, it's not coolant, so what is this stuff? 2WD trucks use a vented slip yoke that has a small hole in the plug. TRANSMISSION FLUID LEAK THROUGH DRIVESHAFT SLIP YOKE – TC007-06 August 1, 2006 Page 2 of 2 TECHNICIAN TOOL* MANUFACTURER PART NUMBER QTY U–Joint Service Tool SPX/OTC 7057 1 U–Joint Tool SPX/OTC 7490 1 U–Joint Bearing Press Set Snap–On CJ91D 1 * NOTE: Only ONE of the tools listed above, or its equivalent, is required. 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. Remove the slip yoke. I knew there was something with a leaking trans fluid TSB and I initially had it confused with the driveshaft clunk TSB. Most likely you're looking at transmission fluid from a leaking transmission. 1. If the shaft seal is leaking, fluid will be dripping from bottom of bellhousing, and when inspection cover is removed, fluid will be evident inside the bellhousing. It's only leaking on an up hill slant at this time because its probably low on fluid. Ive looked it up and its under $10 for the seal itself. the slip yoke was also replaced because of worn flat spot. It will be in the center behind the u-joint. Leaking transmission oil from yoke. It was an o-ring that was missing on the new transmission. We'll walk you through the most common points to identify automatic transmission leaks and let you know what you can do to make it … Leaking Driveshaft Yoke: Written by: ... Again catch the transmission fluid. It was an o-ring that was missing on the new transmission. Its leaking at the bottom of the housing where the yoke goes in. 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. Home Transmission Fluid Leak at the Drive Shaft Yoke. Correct or no? This style yoke is for use on transmissions that use an O-ring seal to prevent leakage. Maybe the hoses? side. by Jon Frye. what type of transmission you have. I have never heard of the slip yoke plug leaking...in my 50 year of playing with cars. installed in the cup on the transmission output shaft (arrow in photo below). your truck without some good jack stands to support it. I need to fix this. Clean both outside and inside so they are dry and clean. The hole allows air to vent as it plunges in and out, which helps prevent a bind or stop clunk condition. Has anyone ever seen a leak from the actual yoke itself? Drive Shaft Removal and Slip Yoke Service Ford F-150 2011-2014 ... Slip yoke slinging leaking ATF, transmission fluid, transfercase oil Fix, or rigged repair - Duration: 2:58. NEVER EVER get under For reference, I have a FMX automatic and the car has not been driven for a few weeks. You might check if yours has the same type of weep hole. Free video instructions on how to fix minor transmission fluid leaks in a 2008 Toyota Tacoma 2.7L 4 Cyl. If it is leaking through that hole and onto the U-joint then there may be a problem with some internal seals and it is likely the yoke itself is worn allowing the trans fluid to pass through between it and the output shaft. Welcome. If I am understanding you correctly, you have changed both the seal itself AND the “shaft head”, which sounds like the driveshaft yoke that slides into the transmission. Not leaking out the side of the Tail Shaft, around the Speed cable? Replace the driveshaft, prior to placing the slip yoke in lube it and the inner edge of the seal with a little trans fluid. From what I can find online, I have a bad O-ring in the … The rear seal is bone dry so I know thats good and not the issue. GM3764601) will be in the groove inside the cup. This time the drip is from the yoke itself. Lower the truck and check/top-off the trans fluid. back into the transmission. Complete steps to easily fix minor transmission fluid leaks in a 2008 Toyota Tacoma 2.7L 4 Cyl. The size of the puddle was about 10-12 inches in diameter before I could get the yoke back in to stop the leak. Well I check the yoke and mine does NOT have a hole in the mind of the yoke. The weep hole yoke is for transmissions that had a cup on the end of the shaft, completely isolating the splines from the internals of the transmission. extension housing. My slip yoke is leaking, and I can't find exactly where it's leaking at. Leaking transmission fluid and rear shaft seal was replaced. I've talked to 2 mechanics, as well as a few transmission shops and getting mixed answers so now I'm pretty confused on which route to take. The weep hole yoke is for transmissions that had a cup on the end of the shaft, completely isolating the splines from the internals of the transmission. I have had a leak from the extension housing seal and the slip yoke on my 2007 Toyota tundra 5.7l 2wd. Make sure the rubber seal on the extension The transmission slip yoke is leaking from the small hole at the U-joint. Most bellhousings do not go all the way around. Next remove the speedo cable from the sleeve in the Dealer want replace the entire drive shaft with the slip yoke. As our Thunderbirds reach close to 60 years old, strange problems are starting to appear more often. Extended Cab Pickup (4 Door) vehicle passes over bumps and other road irregularities. Asked By Wiki User. 4L60 Leaking from Driveshaft Yoke. Re: Transmission Slip Yoke leaking. Zechariah 14:1. Unfortunately, the plug was … The seal on the tail shaft of the tranny is what keeps fluid from leaking out. Remove the plug from the transmission and inspect the extension housing seal; replace if necessary. Jump to Latest Follow 1 - 3 of 3 Posts. Please login or register. best you can. Make a mental note of where the metal cup is 1 Welcome, Guest. Leaking trans fluid from weep hole in yoke. If it's nice and snug but not dragging (it's actually lubed with transmission fluid) you should be ok. The seal coming out of the transmission was dry so I believe the fluid is coming out of the hole in the yoke. This will let the driveshaft yoke go all the way in without it hitting there is your output shaft seal. If I took it loose from the transmission, and stood it on the end where the universal joint connects, poured fluid in it, it would leak somewhere around where the yoke and other part mates together. It's not oil, it's not coolant, so what is this stuff? So I replaced the entire driveline and slip yoke and extension housing seal and it was good for 2 days now its leaking from the seal it's not dripping alot but it is definitely still leaking This will also help save the rear seal from damage. the slip yoke was also replaced because of worn flat spot. The O-ring in question (pn GM3764601, 700R4 shown) is The vented slip yoke is sealed … I was replacing the u-joints today and got to wondering whether it's normal for transmission fluid to leak from the transmission tail shaft when the driveshaft slip yoke is removed? What was happening is that after sitting for about a week, my tranny torque converter had finally drained down to the point that the tranny fluid level rose to the level of the slip yoke and started leaking fluid out the vent hole in the freeze plug/cap. ... pulling the rear mount, driveshaft, draining fluid, removing tailhousing, putting it back together and … When the RTV is dry, reinstall and top off trans fluid as necessary. My slip yoke is leaking, and I can't find exactly where it's leaking at. If your truck has this weep hole (arrow in photo below), You can imagine what happens with transmission swaps. First time dealer said something about a burr on the slip yoke shaft damaging the seal during manufacturing. If it has play then that bushing is toast. Do you wish to elaborate on the symptoms, or provide a better description as to your Issue? The freeze plug/cap pressed into the slip yoke was sound and in good shape. Once that's gone take your slip yoke off your driveline and slide it onto the output shaft to completely engage it. Inside the tail housing there is a cup-sort-of-thing with an o-ring that seals to the outside of the yolk. It was on the yoke and the u-joint. It's only leaking on an up hill slant at this time because its probably low on fluid. About 1/2 - 1 qt. This will also help save the rear seal from damage. i then tested the new parts and noticed it was still leaking, so i removed the driveshaft again to have another look. It isnt a huge leak, but there is a puddle of fluid that keeps reappearing after I clean it up. Remove the plug from the transmission and inspect the extension housing seal; replace if necessary. There is probably a hole in the back of the yoke to let air out as you push the yoke on. Last week when I was changing my oil I noticed my drive shaft yoke was leaking some fluid. What is the name of it? John, i have a 2007 toyota tundra, 5.7. transmission fluid appears to be leaking a little on the slip yoke. Our inspection discovered the plug that seals the end of the yoke had a small rust hole from the inside out. I recently replaced the rear seal in my transmission, but over a few days last week it leaked a huge spot ... just the ones with the weep-hole in slip yoke. I.e in the middle behind the u joint on both the outside and inside. Jump to Latest Follow 1 - 3 of 3 Posts. This is second time. Bob. The movement of the yoke just displaces air/fluid inside the transmission case. i have a 1995 mustang gt. I.e in the middle behind the u joint on both the outside and inside. 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 … entire activity could ... there is a seal (like a frost plug) in the slip yoke ( u joint side) you will have to remove the … To install: Lubricate the yoke splines with suitable grease. located at on the output shaft and slide the cup off. Its leaking at the bottom of the housing where the yoke goes in. Put RTV silicone on both sides of the middle. With a flashlight, check the transmission underneath the vehicle for leaks. the rear transmission seal was leaking, so i removed the driveshaft and replaced it. it by removing the transmission extension housing. Clean both outside and inside so they are dry and clean. 1 Welcome, Guest. Browse Categories ... Additionally, the Sleeve Bearing in the Transmission and the Slip Yoke could also be worn. Other seal is bone dry so I have had a small rust hole from the yoke seals against. 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Style yoke is the frequent culprit on the slip yoke, behind the.. It up, but there is an o-ring that was doing the thing... Metal tube may have moved, or the o ring may be worn replacement to you. Removed the driveshaft clunk tsb 'm assuming it 's not oil, it only... The center of the yoke distribute the weight inside the cup as best you can ’ ve read some output! Your vehicle and the slip yoke gone bad yoke … leaking trans fluid out of the yoke... Latest Follow 1 - 15 of 15 Posts stop clunk condition kept the fluid is colored green or so! Have to rebalance anything isnt a huge leak, but there is a of. To elaborate on the shaft transmission you have the RTV is dry even the. Can install it in the same location the puddle was about 10-12 inches in diameter before I could the... Output shaft-to-yoke o-ring is damaged/missing, transmission fluid leaks in a 2008 Toyota Tacoma 2.7L 4 Cyl of driveshaft. Was missing on the tail shaft of the transmission ever get under your truck without some jack. It to leak hole and sometimes they leak the plug from the small hole in groove... Move around, and that 's if the seal best you can install it in the rear center as vent... Changed about 30xxx miles ago you can install it in the yoke?! Some say output shaft seal jack stand under each corner of the yoke itself be distinguished from other in. Front universal joint, not the Issue the small hole at the drive yoke... Fluid from weep hole in the yoke had a leak find a replacement to you! The end of the yoke or sliding shaft that goes to transnmission talked to a few tranny guys they. Will not leak trans fluid as necessary fluid ) you should be ok as to your Issue the of! Vented slip yoke shaft damaging the seal itself leak from the inside out way around yoke a...