Leaking Rear end???

[broncoman6524]

I changed my rear diff fluid, outer seals and bearing. This was about 2-3 weeks ago. Yesterday i noticed that there was a pool of fresh oil under the diff. So i tightened all the bolts sprayed it w/brake cleaner wiped it off and left it. It is still leaking.

Could i have blown the gasket? i used a paper gasket from advance w/o any silicone.

thnx

 

[sled_dog]

pull the cover and just use silicone. When I do use paper gasket(only have like once, I lightly coat it in silicone. I hate paper gaskets. You can get rubber reusable gaskets, there has been a company going around offering them lately, forget what the name is though.

 

[hunterguy86]

RTV all the way. I never use gaskets for diffs

 

[4xcrazy]

I always use a paper gasket, but usually only coat the side that attaches to the cover with a light coating of RTV. Never had a problem with leaking, same with valv covers and trans pans.

 

[88Silverado]

I NEVER use silicone on a paper gasket. Your just asking for the gasket to slowly squeeze itself out over time. Learned this the hard way. Its either paper or silicone but not the two together.

You didnt mention where the leak was coming from. Did you check the pinion seal?

 

[broncoman6524]

its coming from the bottom right of the cover (your looking at it from the back of the truck) You can spray it clean, wipe it, and with enough patience watch it begin to drip again from the same spot.

 

[88Silverado]

Remove it, clean it, put a bead of clear silicone around it, be done with it
Dont over torque the bolts.

 

[Can Can]

I don't understand what the problem is. A tube of RTV and a few quarts of gear oil cost next to nothing.......

Pull the focker off and put some love into cleaning the faces. Get yourself some black RTV and apply it in a nice thick bead on the cover, making sure to circle the bolt holes. Let the cover sit for ten minutes, and then slap it back on the diff. Install the bolts in an opposing pattern. DO NOT over tighten the bolts- they only need to be 1/2 to 3/4 of a turn tighter than hand tight. Any tighter and you'll be squeezing all the RTV out.

 

[Can Can]

Remove it, clean it, put a bead of clear silicone around it, be done with it
Dont over torque the bolts.

Beat me to it!!!!!

 

[88Silverado]

....Pull the focker off and put some love into cleaning the faces. Get yourself some black RTV and apply it in a nice thick bead on the cover, making sure to circle the bolt holes. Let the cover sit for ten minutes, and then slap it back on the diff. Install the bolts in an opposing pattern. DO NOT over tighten the bolts- they only need to be 1/2 to 3/4 of a turn tighter than hand tight. Any tighter and you'll be squeezing all the RTV out.

Yea...What he said

 

[broncoman6524]

how long should i wait before adding fluid? damn i feel realy stupid right now. lol My dads saying i should let it sit overnight then fill it.

 

[88Silverado]

Man, dont feel stupid. Its part of the learning process. Its not a bad idea to wait overnite but its not necessary. It will still cure. The paper gaskets tend to seep and leak. If you use silicone with a paper gasket the gasket will eventually squeeze out between the silicone. Straight silicone works very well for sealing the rearend cover. Again, dont over tighten the bolts, just snug them down.