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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 03-04-2013, 09:02 AM
ciborgman ciborgman is offline
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2007 E92 335 Coupe Transmission gasket leak

Hi,

I have this 2007 335I with 70k miles I raised the car to check for leaks and there it is, the transmission has an oil pan and I guess the gasket is worn out because is leaking is not a whole lot o f oil leaking, I am going to replace the gasket. After replacing it how do I put transmission fluid back in? is there any DIY somewhere.

Thanks

Last edited by ciborgman; 03-04-2013 at 11:05 AM.
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  #2  
Old 03-04-2013, 09:18 AM
ciborgman ciborgman is offline
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.

Last edited by ciborgman; 03-04-2013 at 09:20 AM.
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  #3  
Old 03-04-2013, 11:09 AM
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fun2drive fun2drive is offline
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First of all are you sure it isn't the mechatronic sleeve leaking?
http://www.zftranspart.com/images/custom/mecha.pdf
If you are sure it is the pan all you need to do is to pull the fill plug on the pass side aft which is horizontal and use a transfer hand pump you can locate at any parts store or Harbor Frieght and pump LifeGuard 6 or Mercons SP back in. Once it weeps out put thet plug back in and start the engine and shift through the gears to get the temp between 80-120F. With the engine RUNNING keep filling until it weaps out, reinstall the plug, done...
Oil pan and filter are integral unit. I would not replace the pan just clean the magnets and what until you have 120K miles before replacing the pan/filter...
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  #4  
Old 03-04-2013, 11:28 AM
ciborgman ciborgman is offline
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Thanks for the reply. this is an auto, for the picture looks like is the gasket

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  #5  
Old 03-06-2013, 01:55 PM
ciborgman ciborgman is offline
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does any have a picture to where is the refill port on the transmission, the plug in the bottom I think is to drain the transmission

Thanks
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  #6  
Old 03-07-2013, 06:38 PM
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fun2drive fun2drive is offline
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Hopefully you found it but if not it is on the passenger side aft maybe a few inches before the end of the pan above the pan. Sorry no picture...
Hey found a link that shows the location.
Scroll down a couple pics and you will see it is where I mentioned it was.
http://www.xoutpost.com/bmw-sav-foru...-teardown.html

Last edited by fun2drive; 03-07-2013 at 06:55 PM.
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  #7  
Old 03-08-2013, 07:59 AM
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BB_cuda BB_cuda is offline
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If you do pull the pan to change the gasket, I would advise to change the fluid too. 70,000 miles on fluid is high time to change in my opinion. No offense meant to other poster but i wouldn't go 120k. I personally would change earlier than 70k even if it were not leaking.

I do agree with other poster on the sleeve front. It is at the back of the trans case. It appears you have fluid at the back end of the pan but it could have dribbled down the back and onto the pan interface. I would spray cleaner on it and wipe down and then drive it. After this, look for the fresh fluid.

I have been investigating switching over to a metal pan from the plastic ones our 3 series come with. In order to change filter, the plastic pan has to be replaced as the filter is integral to the pan. Earlier X5 (E53) came with a metal pan that fits my ZF HP26Z trans.

You guys with gasoline powered 3 series have a different transmission though so E53 pan isn't an option. Here is a good link for transmission parts and fluid. You can get the sleeve on this site too.

http://www.thectsc.com/
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  #8  
Old 03-08-2013, 08:15 AM
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fun2drive fun2drive is offline
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That is where I get my LG fluid at as well as ZF parts...
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  #9  
Old 03-08-2013, 11:31 AM
ciborgman ciborgman is offline
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Thank you guys this is good stuff, I am going to replace the oil, but do I need to replace the oil pan or just the gasket, I have to lift the car again to check if is not the mechatronic seal that is leaking, before ordering.

Cheers
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  #10  
Old 03-08-2013, 01:21 PM
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fun2drive fun2drive is offline
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Not until you are at 120K miles or so unless it makes you feel better. I would just drop the pan, clean and I mean no lint what so ever and reinstall. I think the torque for the bolts is low too something like 8 ft pounds so becareful to not over torque them as they will snap...
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  #11  
Old 03-09-2013, 08:31 PM
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BB_cuda BB_cuda is offline
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Go easy or you will snap the screws. The site i posted sells extra screws for a reason. The drain plug torque is 8 N-m (shows this in your photo). This converts to 5.6 lb-ft. My info agrees with other poster that pan bolts are torqued to 10 N-m=7.8 lb-ft. I'm looking for a reasonable cost in-lb range torque wrench as 5.6 and 7.8 lb-ft are too low to use a ft-lb range. So far, i have found one for $96 that is made in USA. The lower the torque, the more important that the calibration is legit.

Your time is a valuable resource. I wouldn't skimp on the pan cost of $130 at 70,000 miles. You are spending this much on the fluid alone. Your kit cost is around $240 if you just go ahead and do it right. Best of luck on the job. Reminder to check the sleeve

Last edited by BB_cuda; 03-09-2013 at 09:18 PM.
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  #12  
Old 03-10-2013, 06:27 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by ciborgman View Post
Hi,

I have this 2007 335I with 70k miles I raised the car to check for leaks and there it is, the transmission has an oil pan and I guess the gasket is worn out because is leaking is not a whole lot o f oil leaking, I am going to replace the gasket. After replacing it how do I put transmission fluid back in? is there any DIY somewhere.

Thanks

Change Transmission fluid

Pan gasket info there too.

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  #13  
Old 03-10-2013, 08:57 AM
ciborgman ciborgman is offline
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I raised the car yesterday and actually is leaking from the mechatronics seal not the gasket, since I have to remove tag pan to replace the seal I will do the whole job and replace the filter. I have plans to keep the car for a long time. I still have my old 4 door 2002 325 with 162k miles and still runs great and no problems at all.
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  #14  
Old 03-10-2013, 11:15 AM
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fun2drive fun2drive is offline
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I think that was my first post to you to check that. It would help others if you can just snap a few pics once you have the pan off to gain access to the sleeve.
There are a couple good posts some with pics some not that document the sleeve change...
Good luck, you can do this it just takes time...
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  #15  
Old 03-10-2013, 02:17 PM
ciborgman ciborgman is offline
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This job is easier than doing the oil pan gasket for the engine, that is a big job and just did that on my e46.
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  #16  
Old 03-10-2013, 03:40 PM
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fun2drive fun2drive is offline
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Pan gasket replacement is a huge PITA no matter which BMW it is. Dropping the suspension sub frame ugh.
Interested in hearing how long it takes you to get the job done since I have not heard of that from anyone yet...
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  #17  
Old 03-11-2013, 08:31 AM
ciborgman ciborgman is offline
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The oil pan is not difficult just labor intensive lots of bolts removal, and putting it back together is the hard part if only one person doing the job, when I was putting all back I tie one end to keep it up because otherwise it swing back and for and really hard to put it back in place, removed air box, pulleys, bolts to loose the hydraulic pump and the engine bar support is a must there is not way to do it without it. once all the prep work is done (raise the car, remove engine compartment part, install engine support bar, drain oil, removed front wheels) I will say a couple of hours to remove the pan maybe more for a first timer, I did in two days and then my car seat in the garage the whole week because I drop one of the pulley the plastic one and it cracked. so I have top wait for it to come. I also replaced the oil filter, the low oil light use to come on all the time and I have put a quarter every time it was on, now all is good and I have not put oil since I changed the pan, about 4 week maybe.

Last edited by ciborgman; 03-11-2013 at 09:58 AM.
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