transmission leak - PeachParts Mercedes-Benz Forum

ronald_m · #1 05-01-2001, 03:51 PM

Hi i have a question,Is it possible that the cuz of a transmission leak is due to overfilling?I have a leak in between the transmission pan and torque converter.I checked my trans fluid and its overfilled.I have a 93 190e.Thanks

Ron

[Edited by ronald_m on 05-01-2001 at 08:53 PM]

ronald_m · #2 05-01-2001, 08:54 PM

Anyone???

jeffsr · #3 05-01-2001, 09:15 PM

There is a lot of real estate between the pan and the torque converter. Overfill could be the problem. Best way to check is resolve the overfill problem and keep an eye on it..

mplafleur · #4 05-28-2009, 03:32 PM

I drained the ATF until I got it just below the minimum mark. I can't remember if it was 1/4 inch or a half inch below.

I took the car out and it would barely engage into reverse or drive. I was barely able to drive it back into the garage.

I put in 1 more pint ATF and the level on the dipstick was 1/4 inch over max. I took the car out and it was still slipping. 1 pint more and the trans shifts great. But now the level on the dipstick is a couple inches over the max mark.

What gives? It seems that I should be close to the correct level now by the way it functions, but the level on the dipstick doesn't match.

TMAllison · #5 05-28-2009, 03:41 PM

The prior postsare 8 y/o....are you checking on level gound with the engine warmed up to oeprating temp and running?

mplafleur · #6 05-29-2009, 11:06 AM

Quote:

Originally Posted by TMAllison

The prior postsare 8 y/o....are you checking on level gound with the engine warmed up to oeprating temp and running?

The initial fill, no. It was specified that it should be below the minimum mark at COLD. And yes, of course it is level. I assume my garage floor is level. If it's not, I built the master bedroom above it on a tilt.

When at operating temperature, it rises.

When I took it out for the test drive and it wouldn't engage, it was taken out cold and it wouldn't engage fully into gear. After I put in another quart (after I drained out 2 quarts), it came back at operating temp. This is where it read far over the maximum mark.

TMAllison · #7 05-29-2009, 12:13 PM

I've never seen an auto trans that was checked for proper fill levels with the engine off.......neither of mine are checked that way.

david s poole · #8 05-29-2009, 12:55 PM

first whether you check it warm or cold the engine must be running.second it's possible that you have the wrong dipstick.to answer your first question there is a breather on top of the trans that will leak fluid if it is severely overfilled.

mplafleur · #9 05-29-2009, 11:04 PM

It's the same dipstick that is in my other 722.3 transmissions. I've swapped them.

Cold running, cold not running; it's the same.

david s poole · #10 05-30-2009, 10:09 AM

when you check the fluid with engine not running the level should be substantially above the top mark and then when started it should drop to correct level.this proves that the trans fluid pump is working as it draws fluid to fill the torque converter.

mplafleur · #11 05-30-2009, 03:22 PM

From Benzmac:

Quote:

When cold, on a level surface, with the engine at idle in park, the level should be 10mm below the bottom line. At operating temperature, the level will be between the lines.

280EZRider · #12 05-31-2009, 10:10 AM

mplafleur is correct. Also remember that the engine creates a lot more heat than the transmission, so to get the tranny warm enough for fluid checking of any accuracy, the car needs to driven about 30 minutes at highway speeds. Just letting it idle will give you an approximate reading only.

mplafleur · #13 05-31-2009, 01:42 PM

I've been driving the car around now and checking fluid level now when I get back, at idle. The fluid level at first didn't show up on the stick. I've been adding little by little with driving in between. I think now the level is getting close to the minimum line. Soon I'll be mid-way.

atikovi · #14 05-31-2009, 01:58 PM

Quote:

I've never seen an auto trans that was checked for proper fill levels with the engine off.......neither of mine are checked that way.

The last Honda I had did.

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