Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Jimbob on 20 April 2009, 09:14:39
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I'm going to be swapping my gearbox out soon.
Its still running, all be it a bit on the crap side, so have some time before the box HAS to be on the car, although it will only be a week or 2.
Thinking on preventative maintainance really.
Just reading Sassanach's guide
http://www.omegaowners.com/forum/YaBB.pl?num=1183142571
Am I correct in thinking if you are doing this BEFORE a thrust washer has actually broken, you only need to strip down as far as the thrust washer, replace and reassemble?
and therefore miss out the more awkward looking parts 7, 8, 9, & 10
Is is ok to store the box with no fluid as well?
Was thinking I could drop the sumps, clean up do the filter etc, then leave empty till we fit it, then refill?
Any other things I need to take into account?
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Thrust washer just needs bellhousing removed afaik, though Sassanach will be able to confirm.
If thrust washer has caused damage to surface, that needs machining I believe.
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When I did mine, I took it as a good opportunity to get all of the old ATF out.
With the box supported yet safe so it could be tipped at the right angle.
Drained the oil through the filler to start with and then removed the sumps.
Supported box so the sump areas were at the top.
Removed filter and cleaned it out with parafin then left to dry overnight.
I noticed that when the box was inverted the fluid came out of the breather. So I collected it from there as well.
After removing the old box from the car I drained all of the fluid from the Torque Converter and left it to drip.
I also blew air through the oil cooler pipes to empty that as much as I could.
I reset the brake band and sorted the thrust washer at the same time.
When I refilled the box I managed to get 7.5 litres into it. Therefore I presume there can't have been much left in it.
The box did need a short run to get the new fluid through the system then I topped up with another 150ml :y :y
A hard crap job but worth it in the end :y :y
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I would be a little careful about tipping fluid out of an auto box. Try to drop the sumps and recover all the fluid that way in the first instance. If the box is tipped up all the crud and metal filings from the sump could make their way into, for example, the torque converter nose bush or one of the oil seals.
It's got to be worth changing the thrust washer whilst it's off the car, surely?
Kevin
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Thats what I'm thinking, fow a few quid up front, could save a lot of grief down the line :y