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Re: 94' toyota 4runner rear differential seal
1st, check to see ifthe vent is plugged on the Differental????? This will make the oil to come out when the oil heats up amd makes gases & pressure. The gases & pressure has to go somewhere!!!! Did the person put a new Crush sleeve, to take the slack out of the pinion, which will makes to pinion move from side to side. Replacing it is no problem. Just time! Gear oil, Seal, Gasket, & Crush sleeve. Place everything on the ground in the order that you take it off. Also check upper & lower bearing & races to see if they need to be replaced. This will also make slack, which will mess up your seal, and star leaking again. Good luck,and take your time.
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This is not easy....You will need air tools ,spray penetrate,seal remover,hammer,and Jack stands..Seal installation tool,.All proper tools..safety glasses.correct seal replacement.,new lock nut...Set park brake,block rear wheels,raise vehicle front and safely place jack stands under each side of lower control arms..Spray lube front drive shaft mounting hardware and lock nut that holds Yoke on front diff..Let it set to penetrate..put vehicle in neutral..Mark shaft to yoke location and direction perfectly because it has to be installed in perfect timing exactly how it was removed..,Remove drive shaft..Remove lock nut and yoke from front diff...You will have to hold yoke while removing lock nut because it will spin..PROTECT HANDS..( These can be VERY DIFFICULT to remove..Sometimes they have to be heated..You will need a yoke removal tool if it doesn't tap off with hammer...Mark exactly the yoke to spline location before removal..You can take close up photos however Mark it also to be sure...If you re-install it wrong it will vibrate terribly..Once yoke is removed You can remove seal.Make sure the new seal is correct...CAREFULLY..DO NOT DAMAGE SPLINES WHILE REMOVING..Sometimes even the perfect seal remover will damage splines..So cover it to protect spline threads..Clean all areas once seal is removed..Make sure nothing is pitted or damaged...Install new seal with installation tool..Lightly,perfectly tap it flush with diff..You can use old seal to install new seal if you don't have installation tool But only a pro should do that...Once in place Line drive shaft yoke with your marks and tap it on ..Use NEW LOCKNUT AND TORQUE IT TO SPEC..Install drive shaft as marked..torque to spec..Lower truck and check fluid..Complete..
There are two places it can leak from. The rear differential cover or the pinion seal at the front of the differential. Both are easy to replace. The pinion seal will require a little more labor than the differential cover plate. You will have to remove the drive line and then break the pinion nut loose. Use a good impact wrench for this and a six point socket for that step. Then you will need to remove the yoke from the pinion gear. Should be able to tap it off. If not use a puller. Remove the old pinion seal with a flat tip screw driver by driving it through the lip of the old seal and push the screwdriver to the side and it will pop out. Clean the hole for the new seal. install the new seal and the yoke. Tighten the pinion nut. You will need to get access to a manual to check the bearing preload on the pinion nut. Then use a torque wrench to check for correct bearing preload. Re-install the drive line.
wow sorry about that. well there is no grease or quick fix for that, the pinion seal will have to be replaced. with the drive shaft removed you can remove the nut holding the yoke to the pinion gear (rear end) ,pop out the old seal and drive in the new seal, then reinstall the yoke and torque down the nut and reinstall the drive shaft. fluid loss while replacing the seal should be minimal but if you do lose fluid you may need to refill.
Remove the driveshaft. You need an impact gun to remove the pinion yoke nut. Pull the yoke out and replace the seal. Make sure you tighten the pinion nut to the correct torque spec. (The dealer can tell you how tight it needs to be.)
fix same problem myself...these's' only 1 inner seal (differential output seal only-about 10$ each) that needs to be replace and new brake shoes (20$ part)..assumed u have rear drums and it leaked diff fluid on the brake shoes..but, i also replaced the brake cylinder (15$ part)-u have to disconnect brake cylinder to remove axle..look on internet for procedures..http://www.yotatech.com/f128/replacing-rear-axle-seals-3rd-gen-4runner-76339/..hope this helps..all dealers are ripoffs-worked at toyota for a year
put flat pan under the housing remove the bolts holding the cover usually 10 or 12 (1/2 or #12 metric) bolts? allow the rear end grease to drain... then scape off the old gasket clean with brake cleaner spray install either new gasket or form one with oil resistant silicone put the cover back on , dont refill the fliud for at least 12 hours if using silicone. Also check the front driveshaft rear end yoke seal....they sometimes leak making the illusion of a rear end pan cover leak...if that is leaking you remove the shaft carefully...remove the large yoke retaining nut, replace the press in seal...be sure retaining yoke nut is properly torqued when reinstalling .
Not hard to do. You need to remove the drive shaft, to get to the nut that holds the rear yoke from the differential. Once the rear yoke has been removed, you can replace the O ring seal from the differential by using a screw driver to pry out the old seal. Try not to damage it to much so you can use it to help tap in the new seal. Once the seal is out place the new seal in place by hand and then place the old old seal on it and tap in the new seal with a small hammer. Take care to ensure that the new seal goes in straight and place some grease on the seal before you place the yoke back in to place. Tighten up the yoke nut and you may want to replace the U joint at this time too since it's off the truck. Once everything it back together, check the differential oil level and top off. Good luck and hope this helps, you can get the parts at Auto Zone and they can also give you the step by step instructions to getting the job done with common tools. The hardest part that i can see you having is the removal of the yoke nut, the job takes about an hour to do so if your going to have a garage to the job the most would be 1.5 hours but should take them about 30 min to do.
Hello,you need to remove driveshaft to be able to get to the nut.Remove the nut (MAY BE VERY TIGHT) and pull the yoke or flange as you called it out & you can pop old seal out & new seal in.You may want to smear a tiny bit of grease or vasoline on outside of seal for easier installation & also on the rubber part of seal so itwon't get damaged when you re-install the yoke.Hope this helps.