Transmission leak fix? RTV vs. Paper Gasket
#1
Transmission leak fix? RTV vs. Paper Gasket
Just bought an 89 4runner 22RE 5 speed! Then discovered that the transmission input shaft seal leaks a lot of gear oil out of the bell housing, down the clutch release fork, and all over the back of the clutch plate.
I finally got the transmission out and am about to put the new seal into the front transmission shaft cover to replace the original. However, I think this cover had been leaking too. It was sealed with some black RTVish sealant which was mostly squished out the sides of the front transmission shaft cover.
How should I seal this cover so it will be absolutely sure not to leak? I saw a post where marlin suggested using Ultra Gray Silicone, but I can't figure out how to use this without it all squishing out the side. This cover gets torqued quite snug. Can anyone with experience with this give me the technique of applying RTV for this application? Also, where exactly should I apply this on the cover. Here's the post that has gotten me to this point https://www.yotatech.com/51346097-post250.html
I had originally considered making my own gasket using paper gasket maker- bad idea?
Really appreciate any help- I don't want to pull that transmission again!
I finally got the transmission out and am about to put the new seal into the front transmission shaft cover to replace the original. However, I think this cover had been leaking too. It was sealed with some black RTVish sealant which was mostly squished out the sides of the front transmission shaft cover.
How should I seal this cover so it will be absolutely sure not to leak? I saw a post where marlin suggested using Ultra Gray Silicone, but I can't figure out how to use this without it all squishing out the side. This cover gets torqued quite snug. Can anyone with experience with this give me the technique of applying RTV for this application? Also, where exactly should I apply this on the cover. Here's the post that has gotten me to this point https://www.yotatech.com/51346097-post250.html
I had originally considered making my own gasket using paper gasket maker- bad idea?
Really appreciate any help- I don't want to pull that transmission again!
#2
Registered User
use ultra gray.
you have to clean old sealant off with a single edge razor, blade do not scratch surface.
clean the gasket surface with contact or carb cleaner, apply thin layer of sealant.
a small amount of sealer will squeeze out to let you know your good.
you have to clean old sealant off with a single edge razor, blade do not scratch surface.
clean the gasket surface with contact or carb cleaner, apply thin layer of sealant.
a small amount of sealer will squeeze out to let you know your good.
#3
Thanks, I'm getting some Ultra Gray tonight. Is it best to snug the cover slightly and let the Permatex set up before tightening? I can't find torque specs for the front transmission shaft cover but it has to be pretty tight- won't all the ultra gray just squeeze out?
Taking the transmission out is a terrible experience- I want to make sure I fix this leak 100%
Taking the transmission out is a terrible experience- I want to make sure I fix this leak 100%
#6
Can anyone with experience with this give me the technique of applying RTV for this application? Also, where exactly should I apply this on the cover.
Is it best to snug the cover slightly and let the Permatex set up before tightening? I can't find torque specs for the front transmission shaft cover but it has to be pretty tight- won't all the ultra gray just squeeze out?
Is it best to snug the cover slightly and let the Permatex set up before tightening? I can't find torque specs for the front transmission shaft cover but it has to be pretty tight- won't all the ultra gray just squeeze out?
See page MT2-54 for an example of where to apply the RTV to the front bearing cover: http://personal.utulsa.edu/~nathan-b...ns/37compo.pdf
The torque specs for the bolts are:
G58 = 12 ft-lbf
W55/56 = 18 ft-lbf
Last edited by MudHippy; 11-26-2012 at 06:15 AM.
#7
Thanks, I'm going to pick up some fipg tomorrow and give it a shot.
I'm also considering getting some black fipg for the gasket on the rear main seal cover, which I'm going to replace as well. Is this a good idea or do you recommend I just use the paper gasket that comes with the rear main seal?
I'm also considering getting some black fipg for the gasket on the rear main seal cover, which I'm going to replace as well. Is this a good idea or do you recommend I just use the paper gasket that comes with the rear main seal?
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#8
x2 on the ultra gray.
#9
I don't know a 22R-E well enough to say which. The FSM says to use a "new gasket". So, though I would think you could use RTV/FIPG instead, I'm just not 100% sure you should.
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