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Old 10-11-2018, 06:22 PM   #1
Rusty_ratchet
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Default Transmission Leak

1985 Volvo 240 with AW70 transmission.

I noticed a leak and it appears to be from the transmission, between the torque converter and rest of the transmission.





I removed the dust guard between engine and transmission and looked at the RMS. I did not appear to be leaking and I did not see any oil on the flywheel.

I believe that the part that is leaking is 7a in the figure below (Volvo 6814812)



It is reasonable to assume that this is the seal that failed?

Last edited by Rusty_ratchet; 10-11-2018 at 06:48 PM..
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Old 10-11-2018, 10:46 PM   #2
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Looks like the converter input seal to me, I would think the convertor housing o-ring in the diagram would be leaking on to on the case of the transmission and not the convertor itself,if you pull the trans to replace that seal you might as well do both and be ready with a speedy sleeve in case of a groove in the snout

Last edited by freevolvos; 10-11-2018 at 10:51 PM..
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Old 10-11-2018, 11:30 PM   #3
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Make sure to add 9, 10, 46, 11, pan, shifter rod gaskets on both sides, trans cooler lines to trans gaskets
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Old 10-12-2018, 12:10 AM   #4
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Originally Posted by freevolvos View Post
Looks like the converter input seal to me, I would think the convertor housing o-ring in the diagram would be leaking on to on the case of the transmission and not the convertor itself,if you pull the trans to replace that seal you might as well do both and be ready with a speedy sleeve in case of a groove in the snout
Is the converter input seal #6, #54, #55, or another seal in the figure below? Note that the fluid marks are on the far side of the torque converter (furthest from the engine).



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Make sure to add 9, 10, 46, 11, pan, shifter rod gaskets on both sides, trans cooler lines to trans gaskets
Thanks! Where are the shifter rod gaskets?

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Old 10-12-2018, 12:19 AM   #5
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27 and I think it the same for other side
Also 22 .. kickdown cable oring
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Old 10-12-2018, 12:26 AM   #6
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Originally Posted by Jack View Post
27 and I think it the same for other side
Also 22 .. kickdown cable oring
Thanks!
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Old 10-12-2018, 08:10 AM   #7
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Seal looks like it would be part number 6 and number 3 would be the converter bushing which I would check for wear. I would for sure do the tails haft bushing and seal as that is a real common leak point. However that can be done at a later date with the trans in the car.wow that sure don't look like it's leaking that bad was it dripping on the ground?
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Old 10-12-2018, 08:54 AM   #8
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Quote:
Originally Posted by freevolvos View Post
Seal looks like it would be part number 6 and number 3 would be the converter bushing which I would check for wear. I would for sure do the tails haft bushing and seal as that is a real common leak point. However that can be done at a later date with the trans in the car.wow that sure don't look like it's leaking that bad was it dripping on the ground?
The car drips constantly. When I get home I have to immediately put a pan under the car to prevent drips on the concrete. At work it leaves a small puddle.

Does anyone know what size speedy sleeve to have on hand in case there is a grove in the snout?

Is it possible to remove the transmission and leave the torque converter in place?
This sounds easier than removing the whole thing and I can get a better idea of what is leaking.
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Old 10-12-2018, 10:56 AM   #9
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It is possible to remove the tans without the torque converter but it becomes a pain in a different way.
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Old 10-12-2018, 12:37 PM   #10
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It is possible to remove the tans without the torque converter but it becomes a pain in a different way.
How so?
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Old 10-12-2018, 09:32 PM   #11
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Take them both out together you could never seat the convertor when putting the trans back in and inadvertently hanging the weight of the transmission off the input shaft isn't a good thing

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Old 10-13-2018, 09:04 AM   #12
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Quote:
Originally Posted by freevolvos View Post
Take them both out together you could never seat the convertor when putting the trans back in and inadvertently hanging the weight of the transmission off the input shaft isn't a good thing
That is good to know. Thanks.
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