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#1
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Transmission fluid change
Is there a plug on the Torque Converter so I can drain it ? 2007 W221 7 speed.
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#2
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Drain tranny fluid from torque converter? Sure you don't mean the trans sump tray? If so, I don't think you can when it's fitted to car. You normally have to drop the sump tray to drain all fluid. Only other way is to try & get most out using a trans siphon/hose & fill it back that way. Doubt you'll get all the oil out that way though
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um.....why have men got nipples |
#3
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Well, Seems there is not much of the fluid in the transmission pan and most of it is in the Torque Converter so that is why I am wondering if there is a drain on the TC.
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#4
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Nope.
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Kent Christensen Albuquerque '07 GL320CDI, '10 CL550. '01 Porsche Boxster Two BMW motorcycles |
#5
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Be careful!!! The 722.9 transmission requires special equipment to re-fill properly. If you've already removed the drain plug in the pan, put it back!!! Don't mess with it!!! Trust me.
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#6
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How about if I Drain all I can and replace that much new fluid with new filter.. Drive it awile and drain and fill again maybe 3 or 4 times.
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#7
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Quote:
At the dealer they use a machine that connects to the transmission cooler lines at the radiator. It extracts the old fluid while it pumps in fresh fluid. They also interface one of the car's computers with something called an SDS(?) and it reads the internal transmission temperature. The target is like 80C. Then using a dipstick that is not provided with the car, they measure the level at 80C to ensure it is filled to the right level. Some DIYers with the 722.6 (5 speed) just drain what is in the pan and replace what comes out, occasionally replacing the filter. Some take it a step further and use an IR temp gun to see if the center of the pan is at 80C and then use a purchased dip stick to measure.
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2006 BMW M5 "Heidi" @ 109,000 miles 2005 MBZ C55 AMG "Lorelai" @ 165,000 miles 1991 MBZ 300E "Benzachino II" @ 165,000 miles 1990 MBZ 500SL "Shoshanna" @ 118,000 miles (On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!) Last edited by Rahulio1989300E; 01-04-2011 at 03:15 PM. |
#8
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Great.. that is what I will do then. I will probly use more fluid doing it this way but taking it to the dealer probly not inexpensive either..
Does the new Fluid have to be MB or are there fluids that are MB approved? |
#9
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STOP!!! Let the dealer do it!!! Like I said in my previous post, trust me!!!
What you don't realize is that there's a filling tube attached to the inside of the transmission pan that extends about 1-1/2 inches up. That's why you're not getting much fluid when you remove the drain plug!!! If you unbolt the pan you're gonna' make a mess, and you won't know how much fluid to put back in!!! Also, there's NO DIPSTICK TUBE on a 722.9!!! You have to pump the new fluid in through the drain plug hole!!! I admire the determination of all the DIY'ers on this Forum, but you're asking for a huge headache if you proceed without understanding what's involved in servicing the 722.9. |
#10
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hmm.. Didnt know all that was gonna come into play.. Now I am thinking it over..
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#11
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Why do you want to change it already anyways?
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Click here to see the items I have up for auction at EBay Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold) |
#12
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Hey Gilly, how's it goin'? MB recommends that the 722.9 be serviced once at 39,000 miles. I guess after that it's sealed for life.
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#13
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Starting in 2008 on some models & in 2009 in all models MB NOW reccomends an every 40K service for that same trans!
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#14
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WHAT! Sealed for life didn't work!? The HORROR......
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Click here to see the items I have up for auction at EBay Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold) |
#15
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Still a change at 30k for 124 models???
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC] |
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