Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Marie on 12 April 2008, 15:56:52
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right the leak is now getting to the point where its costing me a small fortune in ATF. (188mile and then it need just under 3ltrs.)
Right we are looking at replacing the torque converter seal. one snag. how do you get the bl00dy thing off with out damaging anything???
i looked at the old one and couldnt get it to bude. your advice would be great. it has a twist thread on it.
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right the leak is now getting to the point where its costing me a small fortune in ATF. (188mile and then it need just under 3ltrs.)
Right we are looking at replacing the torque converter seal. one snag. how do you get the bl00dy thing off with out damaging anything???
i looked at the old one and couldnt get it to bude. your advice would be great. it has a twist thread on it.
`Haven`t done a miggy-box T.C oil seal Marie...I`ve done a few on American auto-boxes though and I`d thought they`d be similar.
The lip-seal is normally positioned using a 'drift' (as you would for a bearing)...I`ve used a large 'socket' as a drift for that job.
Removing the lip seal (if it`s the drifted in place type) could be achieved using a slide-hammer or even a screwdriver held at a shallow angle as a lever; being careful not to scratch or damage the aluminium transmission housing.
Maybe an 'expert' will be along soon to confirm the lip-seal is either drifted or screwed in place. :y
Edit:
Just looked at http://www.omegaowners.com/forum/YaBB.pl?num=1183142571
Does the oil seal fit in that (shown-empty) recess in the aluminium bellhousing around the mainshaft in the second picture?
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It does look like there's a space for an oil seal in the bellhousing as Debs says. However, there must be one in the torque converter itself to seal where the shaft enters the torque converter. I'd have thought it would be this seal that would have been more likely to be damaged during gearbox replacement. :-/
Kevin
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.. and if you need a hand, you know where I am. :y
Kevin
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It does look like there's a space for an oil seal in the bellhousing as Debs says. However, there must be one in the torque converter itself to seal where the shaft enters the torque converter. I'd have thought it would be this seal that would have been more likely to be damaged during gearbox replacement. :-/
Kevin
Doesn`t the T.C have a spigot protruding from it`s torus-body with splines on it`s inside and a smooth outer-surface for that oil lip-seal to run against?.....all of the ones I`ve seen before did.
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Right as per that guide. the second picture you can see the seal. its the metal ring with 3 screw holes in it.
there is nothing protuding from it to get the bl00dy thing off. i think its goig to have to be tapped off. it defo has a screw thread.
Cheers kevin. i need to get this fixed asap.
Their are several gearbox specialists in fareham that might be able to help.
i could get the box off and take it to them to replace the seal for me. (maybe dependent on their cost, i have a new seal already. i might call them monday.) and its getting the box to them as if i take it off i have no car to get the box to them. i am going to have to source a bigger jack and a torque wrench too before i take the box off)
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Ahh, OK. Have never looked that closely at one, TBH. You're probably right, Debs. I can imagine the seal could have been damaged pretty easily when offering up the torque converter in that case.
Kevin
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Ahh, OK. Have never looked that closely at one, TBH. You're probably right, Debs. I can imagine the seal could have been damaged pretty easily when offering up the torque converter in that case.
Kevin
James fitted the TC and said that it went in ok. so we recon it was damage before and we never noticed it. :( :( ether way its got to come off!
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It looks like the seal just presses into the recess in the bell housing and is secured with the 3 screws? Are you saying there's a large thread in the bell housing that it screws into?
Kevin
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It looks like the seal just presses into the recess in the bell housing and is secured with the 3 screws? Are you saying there's a large thread in the bell housing that it screws into?
Kevin
yep there is. i didnt notice it until i got my hands on the new one. its not that large a thread its a relatively small thread when you look at it. but i think i might have to wd40 it or spray that stuff we used at your on it.
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Ahh, OK. Have never looked that closely at one, TBH. You're probably right, Debs. I can imagine the seal could have been damaged pretty easily when offering up the torque converter in that case.
Kevin
That`s normally why you have to pre-mount the tranny and torque-converter together (off the car), before jacking the 'whole' into place on the flexplate/bellhousing.
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Two possibilities, marie:
Is it the 'correct' seal for your transmission?......is the 'thread' really a thread or perhaps 'rubber-ribbing' to keep pressure on the seal`s outer face?
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the seal just press fits into the bellhousing and is secured by three screws
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the seal just press fits into the bellhousing and is secured by three screws
I assume with a retaining plate, or is there a flange on the seal for the screws.?
Marie you may wish to consider carefully using 2 self tapping screws into the seal in order to lever it out, or also you could knock up a sort of u shaped plate to allow you to lever onto the side of the casing. This technique is used to remove crankshft seals.
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the seal just press fits into the bellhousing and is secured by three screws
I assume with a retaining plate, or is there a flange on the seal for the screws.?
Marie you may wish to consider carefully using 2 self tapping screws into the seal in order to lever it out, or also you could knock up a sort of u shaped plate to allow you to lever onto the side of the casing. This technique is used to remove crankshft seals.
OK not good looks and sounds like its going to be a b*tch to get off. i might try it on the old one first.
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the seal just press fits into the bellhousing and is secured by three screws
I assume with a retaining plate, or is there a flange on the seal for the screws.?
Marie you may wish to consider carefully using 2 self tapping screws into the seal in order to lever it out, or also you could knock up a sort of u shaped plate to allow you to lever onto the side of the casing. This technique is used to remove crankshft seals.
OK not good looks and sounds like its going to be a b*tch to get off. i might try it on the old one first.
Easy enough.
The thread is just a set of small lip seals to seal the outer.
You can remove the old one with a screw driver.
Keep the old seal as it will work as a drift to help fit the new one.
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the seal just press fits into the bellhousing and is secured by three screws
I assume with a retaining plate, or is there a flange on the seal for the screws.?
Marie you may wish to consider carefully using 2 self tapping screws into the seal in order to lever it out, or also you could knock up a sort of u shaped plate to allow you to lever onto the side of the casing. This technique is used to remove crankshft seals.
OK not good looks and sounds like its going to be a b*tch to get off. i might try it on the old one first.
Easy enough.
The thread is just a set of small lip seals to seal the outer.
You can remove the old one with a screw driver.
Keep the old seal as it will work as a drift to help fit the new one.
Cheers mark.
Just wish you lived closer i would have got you to do it for me. ;)
ill have a go at getting the old one off the old gearbox and let you know what happens.
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you can press the seal in with finger power it is'nt that tight! :)
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im curious Debs about these american slushboxs you've played with, enlighten.
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you can press the seal in with finger power it is'nt that tight! :)
cheers.
do you think that this is whats causing the leak? i hope so what else could it be? the gearbox works as it should in every other way.
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as its the only seal in the bellhousing it must be the leak
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as its the only seal in the bellhousing it must be the leak
Thought it was thankyou very much. :)
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im curious Debs about these american slushboxs you've played with, enlighten.
GM Turbo hydramatic 350 and 400 (with and without electric T.C O/D clutches).
I have rebuilt and modified many of them (line-pressure/change-points and T.C 'stall' changes etc.
The days before E.C.U`s of course.....but with a small or big block Chevvy V8 providing the power the TH 350 could deliver some incredible quarter-mile times....and be very reliable too! ;)
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so if the th400 in the eldo goes t*ts up i'll know where to come. :)
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so if the th400 in the eldo goes t*ts up i'll know where to come. :)
Yup, `still got all the repair/rebuild factory-manuals and slide-pullers etc.......easy transmissions to work on and if you obey the cool and clean rule will last donkey`s years! :y
The various U.S (aftermarket) 'Towing' shift-modification kits for the TH400 are very good (new valve-body plate, heavy-gauge accumulator spring)....shifts are firmer and line pressures higher, giving faster changes and less wear/heat...the kits are dirt-cheap, and fitted in an afternoon (in car) and lengthen the life of the transmission considerably.
Shift Kit (just as example): click-link, scroll down to TH400....the "Heavy Duty" option would be perfect for daily use and not snap your head clean-off your neck like street-strip/competition versions.
http://www.transmissioncenter.net/Shift_Kits.htm
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Right its comin of on the 26th!
i have called 2 local gearbox specailists.
One has said defo the tc seal and if i cant get it off i can take it to them they will swap the seals for me at a small cost. and even keep the garage open a bit later if we cant get the box off before 12noon on the sat. ( this is when they close).
The other gearbox specialist said he dont think its the tc seal its the bolt gaskets failed. ???? i have never heard of this and think hes tryin to con me. he also mentioned that cos my old box got flooded with water that i should change the Torque converter as it will have been contaminated. and their is no way of tellin if its good or not.
well im going with the first garage they were really nice and very helpful. more so when they found out i fix the car and not the hubby! ;D ;D