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  #1  
Old 09-06-2012, 11:21 PM
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Question 300sdl tranny leak here with picture

It is leaking ATF at the bottom of this round disc. It is not the B2 cover. It is right next to the tranny fill tube at the front on the passenger side. How to fix it? Can I remove the disc and renew the o-ring? Anyone know the part #?

Any info is appreciated.
Attached Thumbnails
300sdl tranny leak here with picture-img-20120906-00019.jpg  
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #2  
Old 09-07-2012, 08:21 AM
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See if you can identify the bit in this PDF

http://www.ganzeboom.net/images1/ganzeboom/parts/Mercedes/722.3,%20722.4.pdf
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #3  
Old 09-07-2012, 11:19 AM
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Thanks Army. I look at the PDF and I think it is leaking from the Front Servo Cover - item 905. Is 361 the o-ring? Can it be replaced easily?
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #4  
Old 09-07-2012, 12:13 PM
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I've been putting some pictures of that type of work in this thread

722.303 in bits photo shoot

If you wanted to remove the cover you could probably do so quite easily with a helper pushing it in and you removing the spring clip - otherwise rig up a clamp as shown in the thread above. The only problem I had with my wood working clamp was that the throat wasn't deep enough so I removed the valve body. I guess most people would think that that is a bit excessive!
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #5  
Old 09-07-2012, 02:09 PM
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B1 piston o-ring leaks

It is leaking from the B1 piston cover. How easy it is to replace the o-ring with the tranny in situ? There is a strong spring behind it. I do not want to remove the cover unless I know I can put it back together.

Thanks
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #6  
Old 09-08-2012, 04:11 AM
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I have no idea what it is like to do that job with the transmission still fitted to the car - sorry. Can anyone else comment?

EDIT - I will say that compared with the 722.1 brake band piston springs these are pussies!
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Last edited by Stretch; 09-08-2012 at 04:12 AM. Reason: Added a bit
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  #7  
Old 09-08-2012, 06:08 AM
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If you place some thing like a socket against it & then use a bar to leaver against the socket. You can hold it in enough to get the retaining spring out. Do the reverse to put it back together.
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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
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  #8  
Old 09-13-2012, 04:29 PM
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Check with you guys first

The tranny is leaking from the B1 piston cover for sure. I am contemplating replacing the o-ring behind the cover. I think it is doable with the tranny in situ. Also the job seems to call for a MBZ special tool 125 589 06 21 00, is it true? I think I can improvise the tool.

Assuming I can open up the cover and push the spring and cover back in:-

1) Anything will 'spring' put, apart from the spring, if I remove the retaining ring and pop the cover off.
2) Would I mess up something inside that I render the tranny useless?

Any info is appreciated.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #9  
Old 09-13-2012, 08:46 PM
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The spring will spring out if you remove the cover. It is a VERY strong spring.

I had this same leak and repaired it myself.

I bought the replacement seal from a local dealership. It is very hard to depress the cover and remove the clip that keeps it in place, and do the opposite while trying not to damage the new seal. Here's what I did:

I took a large nut (the bigger, the better) and JB Welded it smack dab in the center of the cover. I then bought a turnbuckle from the local hardware store. You will use the turnbuckle to press the cover inward so that the clip can be removed. One end of the turnbuckle will of course have to fit into the center of the nut on the cover, so I ground that end down to a point. I used a piece of 2x4 against the car body to put the other side of the turnbuckle against. It helps to use a hammer to pound the turnbuckle into the 2x4. This will make a depression that the turnbuckle end can fit into so it will stay in place and not turn.

I don't remember if I had to lift the tranny at all to get the exhaust out of the way. I never removed the tranny, nor did I disconnect anything to perform this job. I did take some trial and error before I had it done. I did this several times. Once, just to try to seal the leak better before I got the replacement seal.

I took a picture, lucky you.
Attached Thumbnails
300sdl tranny leak here with picture-tranny-seal-replacement.jpg  
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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)


Last edited by mplafleur; 09-14-2012 at 10:01 AM. Reason: spelling
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  #10  
Old 09-13-2012, 08:56 PM
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This is the along the same line of my improvisation. Do you know the part # of the o-ring/seal?
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #11  
Old 09-14-2012, 08:04 PM
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Is there just the o-ring for the cover or is there a teflon seal on the piston as well?

Sixto
87 300D
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  #12  
Old 09-16-2012, 10:03 AM
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I looked and could not find any record of the part number; just the o-ring for the cover.
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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

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  #13  
Old 09-16-2012, 11:59 AM
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I found it 005-997-86-48
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #14  
Old 09-18-2012, 02:02 AM
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Done

I improvised a tool with bits I found in the garage to replace the o-ring. It is a very simple but effective tool. I strapped the metal bar onto the exhaust which is right in front of the B1 piston using a hose clamp. As I backed out the screw nut, the socket will be pushed against the cover to allow me to remove the retaining ring. Then you reverse the nut's direction to back out the cover. It is very controlled and easy. Reverse the steps to put everything back together. You need to jiggle and center the socket the best you could. The job would be very hard without this tool as the spring behind the cover is very very strong. It is even more difficult when you are lying on your back underneath the car.

Now no more leak, until the next gasket craps out.
Attached Thumbnails
300sdl tranny leak here with picture-b1_tool.jpg  
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #15  
Old 09-18-2012, 10:50 AM
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Good job!

Another great improvised tool idea.
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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

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