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Rear Main Seal Replacement and More

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Old 01-18-2011, 07:38 PM   #1
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Rear Main Seal Replacement and More

Hi everyone, I am getting ready to replace rear main seal on 4WD 99 4Runner. What else would be recommended to replace while transfer case and transmission are down. The runner has 178000 miles on it and would like to do this once. Thanks in advance. -Dennis
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Old 01-19-2011, 05:20 AM   #2
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Well if you've got a manual, I think it would be pretty obvious to do the clutch. Otherwise, I can't think of anything else you would need to do with everything down...
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Old 01-19-2011, 05:54 AM   #3
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It is an automatic. I didn't know if I should also change head gaskets, cam seals, etc.
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Old 01-19-2011, 07:38 AM   #4
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I'd probably inspect and replace if looking bad the following things because you will have easy access with the tranny out (not sure how much rust problem you have there or how much you can spend):

Exhaust gaskets or other exhaust components
Brake lines (rear)
Fuel lines/filter
Drive line components, center bearing etc...
Torque converter seals
Look for cracks on the flex plate
Fire wall insulation
Motor mounts
Tranny mount

Last edited by mt_goat; 01-19-2011 at 07:39 AM.
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Old 01-19-2011, 06:59 PM   #5
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Thanks, I'll look at those things. I am the fourth owner, but the truck has always been titled in the south, so really no rust to worry about.
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Old 01-19-2011, 07:06 PM   #6
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hey man where are you at in SC I am in charleston
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Old 01-19-2011, 07:23 PM   #7
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get a speedy sleeve to go over the crank otherwise it will still leak due to the crank grooving
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Old 01-19-2011, 07:53 PM   #8
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I live outside of Greenville in Pickens.
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Old 01-19-2011, 07:54 PM   #9
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Never heard of speedy sleeve, where can I get one and how difficult to install?
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Old 01-19-2011, 07:57 PM   #10
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http://cgi.ebay.com/ebaymotors/72-To...Q5fAccessories

just gentle tap it around the end of the crank and do the seal like normal. the seal riding on the crank causes a small groove to wear in the crank allowing oil to seep by the seal even if its brand new the thin sleeve covers the groove so no leaking.
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Old 01-19-2011, 10:35 PM   #11
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Thats a good idea but, find a sleeve for a 3.4L that link above is for a 22R. Some auto parts stores carry speedy sleeves or can order them.

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Originally Posted by sebastianholmes View Post
http://cgi.ebay.com/ebaymotors/72-To...Q5fAccessories

just gentle tap it around the end of the crank and do the seal like normal. the seal riding on the crank causes a small groove to wear in the crank allowing oil to seep by the seal even if its brand new the thin sleeve covers the groove so no leaking.

Last edited by Epcofabrication; 01-19-2011 at 10:37 PM.
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Old 01-20-2011, 03:09 PM   #12
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oh thats my bad for some reason i thought his was a 22r. go me for not reading the full OP
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