Volvo RWD 900 Forum

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Transmission Leak 900 1994

I've got a 1994 940 wagon with 100,000. It has a small leak. I was told it's coming from the trans pan gasket. It's been 40,000 miles since the trans has been serviced. I was told that if the pan is dropped and fluid is replaced, shavings could break free and ruin the trans--that I should just live with the leak. I would appreciate any opinions. Thanks.








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Transmission Leak 900 1994

Thanks Steve and Rule. By the way, my source of info was a Volvo Service Manager, so you can see why I posted here. Then I talked to another one who agreed with you.








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Transmission Leak 900 1994

You can pull the pan but you must be very careful. You must do it on a full moon at the stroke of mid-night with your lucky rabbits foot in your pocket and throw some salt over your shoulder for good measure. Seriously though there was a time when that was the case but we have not had that problem since the Swede's divorced themselves from the 4HP22 ZF transmission. '87 or '88 was the last year for that nonsense. You can feel free to pull your pan if you'd like and even change out the filter, although you'll find the "filter" to be nothing more than a screen. But hey, it gets the really big chunks you know. What Steve says is right on the money, it is easier and does a better job if you just pump a gallon of the old nasty out at the trans cooler line where it joins the radiator while you pour in a gallon of fresh stuff. In fact every tech I new had a drawer full of those little drain plug seals because nobody ever bothered to pull a plug, we'd just pump the stuff out. This mentallity goes all the way back to when we had no drain plugs in our trans pans and your options were to pull the pan or pump it out. If your gasket is leaking I would just snug the bolts up a little, clean it off with some brake spray clean and check it again next week and see how it looks. By snug them down I mean just that, give them a little tweak don't twist the piss out of them and have the gasket shoot out the side.

Mark








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Transmission Leak 900 1994

You need a new mechanic: that is ridiculous. The pan bolts may be loose and can be tightened. If it still leaks, pull it off and replace the fibre gasket.

By the way, your transmission does not need to have its pan removed and cleaned (this was dropped by Volvo); draining and refilling with fresh fluid is all that is needed.

See the 700/900 FAQ for detailed information.







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