... pulling the rear mount, driveshaft, draining fluid, removing tailhousing, putting it back together and … And unless you dismantled part of the transmission, you did … 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. The yoke seals up against that o-ring, stopping fluid from reaching the very end/back of the tail housing. Any help would be much appreciated. The seal on the tail shaft of the tranny is what keeps fluid from leaking out. Turns out that there's a weep hole in the rear center of the yoke, behind the u-joint. Please login or register. My slip yoke is leaking, and I can't find exactly where it's leaking at. Slowly lower the vehicle onto the jack stands and make sure that they are secure. GM3764601) will be in the groove inside the cup. Make a mental note of where the metal cup is Unfortunately, the plug was … It isnt a huge leak, but there is a puddle of fluid that keeps reappearing after I clean it up. the slip yoke was also replaced because of worn flat spot. extension housing. If the trans in your truck location of the rear u-joint on the pinion yoke at the rear so you can install it in the It's only leaking on an up hill slant at this time because its probably low on fluid. Leaking trans fluid from weep hole in yoke. I noticed it when parked on a inclined drive way, now I have the truck level and see if is still leaking in a bit. Re: Fluid leaking from rear driveshaft joint May 16 2013, 4:50am 2WD trucks use a vented slip yoke that has a small hole in the plug. In fact, the drip was from the surround where the yoke resides. It was an o-ring that was missing on the new transmission. So I'm assuming it's my yoke that is bad. 1 Welcome, Guest. The freeze plug/cap pressed into the slip yoke was sound and in good shape. your truck without some good jack stands to support it. If it's leaking from that weep hole in the yoke, it's because there's no O … There is probably a hole in the back of the yoke to let air out as you push the yoke on. This will make sure it is not installed out of balance. 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. installed in the cup on the transmission output shaft (arrow in photo below). I.e in the middle behind the u joint on both the outside and inside. Its not a output shaft seal. Replace the driveshaft, prior to placing the slip yoke in lube it and the inner edge of the seal with a little trans fluid. 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. Make sure the rubber seal on the extension The transmission slip yoke is leaking from the small hole at the U-joint. It's not oil, it's not coolant, so what is this stuff? This will also help save the rear seal from damage. This style yoke is for use on transmissions that use an O-ring seal to prevent leakage. I turned the truck around and parked with the nose downhill and it quit leaking. 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. drive shaft leaking trans fluid out of the front universal joint, not the ... get rid of the driveshaft on the transmission. another O-ring, use a little tranny fluid on the outside of the yoke before sliding it i have a 1995 mustang gt. Try to wiggle it side-to-side. Please login or register. Plug the transmission to prevent fluid leakage. Tranny fluid leaking from drive shaft. To remove the extension housing, you will need to remove Clean both outside and inside so they are dry and clean. Just at the Tail End? If your truck has this weep hole (arrow in photo below), 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. i have a 1995 mustang gt. you will be able to see it with the driveshaft removed by flipping the yoke to the What would cause transmission fluid to leak from the driveshaft yoke on a 95 Chevy Blazer 4wd 4.3 vortec vin code w? To install: Lubricate the yoke splines with suitable grease. The rest is the reverse of removal. The movement of the yoke just displaces air/fluid inside the transmission case. As the fluid traveled down the output shaft and yoke splines it leaked through the holes in this plug. Thanks. First I thought it was the rear output seal so I replaced that.