Opinions on rear main seal replacement procedure
#1
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Opinions on rear main seal replacement procedure
I am getting ready to put the new engine (01+) into my 90. I have changed all the seals except the rear main seal. I am not sure I can pry the seal out without damaging the metal around. Another option would be to remove the bearing retainer plate above and replace the seal.
Has anybody removed the retainer plate to replace the seal? Is it even possible to remove it without removing the oil pan?
Thanks.
-Raj
Has anybody removed the retainer plate to replace the seal? Is it even possible to remove it without removing the oil pan?
Thanks.
-Raj
#2
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No, not possible without removing the oil pan.
Actually, it might be, but you probably won't get the little half moon thingy to seal. Either go easy with a screwdriver being careful not to pry on the seal surface, or take the pan off.
Actually, it might be, but you probably won't get the little half moon thingy to seal. Either go easy with a screwdriver being careful not to pry on the seal surface, or take the pan off.
#6
You really don't HAVE to do it that way, but it works if you want to.
Ideally you want one of those curled picks (dunno what its called) that you can poke into the old rear main seal and yank it out carefully. that's how I'd do it next time anyway. Or do it Abe's way which may also work, but I never tried that method.
#7
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I just did it without removing the oil pan. I've also replaced the rear oil pan gasket that goes under rear main seal so it was a bitch to stuff it in without damaging either seal. Just need to be careful, align it perfectly and then press it in place.
#9
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I am leaning more towards removing the oil pan to make sure it is not leaking. This engine came with a lot of oil all over. I am not sure the oil pan / block interface isn't leaking. I am just afraid of messing up the oil pan while removing it. I have looked at the service manual and can't visualize the plate that needs to be glued inside. It all seems very confusing but, it might be an adventure.
-Raj
-Raj
#10
Do you have even a distant hint of "careful" in your blood?
If so, here's how you do it.
Get two smallish self-tapping sheet metal screws, charge your drill batteries up.
Drill the screws into opposite sides of the seal - but not all the way in.
Pull on the screws to lever out the seal.
I've done probably 3 rear mains this way, never had a problem. Fortunately, the sides of the seal will prevent you from dinging the machined mating surfaces unless you're a complete douchebag with tools, in which case you shouldn't be working on a rear main in the first place.
If so, here's how you do it.
Get two smallish self-tapping sheet metal screws, charge your drill batteries up.
Drill the screws into opposite sides of the seal - but not all the way in.
Pull on the screws to lever out the seal.
I've done probably 3 rear mains this way, never had a problem. Fortunately, the sides of the seal will prevent you from dinging the machined mating surfaces unless you're a complete douchebag with tools, in which case you shouldn't be working on a rear main in the first place.
#11
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I just replaced mine like... Yesterday.
Just got a little itty bitty baby flathead screwdriver, wedged it in carefully, pried slowly, and done. Well... I guess it was kinda a pain, but i'd much rather do that a million times than bench press my transmission back up into place.
Just got a little itty bitty baby flathead screwdriver, wedged it in carefully, pried slowly, and done. Well... I guess it was kinda a pain, but i'd much rather do that a million times than bench press my transmission back up into place.
#12
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After closer inspection we decided to take the oil pan off and check the inside and reseal everything. Somebody had been in there before and hadn't cleaned the old sealant. It was leaking below the front and back oil pan gasket.
Thanks for all the suggestions.
-Raj
Thanks for all the suggestions.
-Raj
#14
I have replaced two successfully like 18psi, and use the punch method the second time, finding it easy and less nerve-wracking than fishing with the screwdriver.
Turn the old seal around and slide onto the crankshaft butting up against the new seal. Press a small 2x4 against the old seal and lightly tap board to seat new seal.
Turn the old seal around and slide onto the crankshaft butting up against the new seal. Press a small 2x4 against the old seal and lightly tap board to seat new seal.
#17
the only thing you should EVER use to remove an oil seal, is an oil seal removal tool. They're like $12 from autoparts store and remove seals in 2 sec without any damage.
Wish me luck....Im gonna be trying to replace the rear oil pan half moon tonight with the engine still in the car.
Wish me luck....Im gonna be trying to replace the rear oil pan half moon tonight with the engine still in the car.
The Grim Reaper called.
He wants his thread back.