Rear main seal replacement - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 04-01-2010, 10:21 PM
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Rear main seal replacement

94 4x4 22RE xtra cab

I replaced my engine two years ago. Replaced the timing chain, water pump, all front and top gaskets, made a new oil pan gasket, and replaced the front and rear main seals. Three days after the job, the rear main seal was leaking. It's leaked ever since and I am finally thinking of replacing it.

I hate dropping the tranny/x-fer case, and hate re-installing it even more.

So I don't have to do it again, can anyone offer me some tips on the seal replacement?

Do I leave the aluminum seal housing in place and pry the seal out? If so, any tips on doing this?

I am thinking that removing the housing is a bad idea since it will involve trying to pry it out from the oil pan and block.

Any tips on what to do if I find the crankshaft scored?
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#2 Old 04-02-2010, 02:47 PM
Helium-3 is the answer
 
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I just pried the seal out with a small, straight screwdriver, with the tip covered over by electric tape. Just take your time, and loose the screwgee ASAP so you don't scratch anything. I would use toyota seal if you didn't last time, and find something soft and flush to tap the seal in better. I didn't mess with the housing...just left it in place.

Plan on resurfacing the flywheel, and I'd put a new clutch, pressure plate and throwout bearing in, and maybe save the old one for an emergency spare (or toss it if it's close). It would be worth the extra hundy to not have to drop this tranny again for at least a couple more years.

I'm not sure what you'd do if the crank is scored...others will though.

1992 Toyota Pickup, 2WD, base, 22RE, 5-speed, 144,000 miles.
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#3 Old 04-02-2010, 03:23 PM
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Quote:
Originally Posted by LeftCoast View Post
...loose the screwgee ASAP so you don't scratch anything....
Huh?
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#4 Old 04-02-2010, 07:56 PM
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Here look at this. If crank is scored.

http://www.store.partsdinosaur.com/product899.html
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#5 Old 04-05-2010, 10:51 AM
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Quote:
Originally Posted by Jumbobret View Post
Here look at this. If crank is scored.

http://www.store.partsdinosaur.com/product899.html

Does this require a special (large ID) seal to accomodate the larger effective shaft diameter or can I use a stock seal?
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#6 Old 04-06-2010, 10:35 PM
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No it does not. Just use the same seal you would normally use.
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#7 Old 04-07-2010, 08:54 PM
Helium-3 is the answer
 
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Quote:
Originally Posted by d-cubed View Post
Huh?
Sorry, I was tired.

Lose the screwdriver ASAP (only use it to get the seal started, then pull it out with your fingers...less potential to scratch things up.)

1992 Toyota Pickup, 2WD, base, 22RE, 5-speed, 144,000 miles.
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