HOW TO: change the automatic gerbox oil and flush on a 722.6 'box

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BlackC55

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Re-fit the dipstick cap and then road test.

Tools used.
DSCF5004.jpg


The part number for the sump pan gasket is: A1402710080

Part numbers.
 
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BlackC55

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Just remember safety is first. Wear gloves and be carefult as the oil is HOT. It will blister your skin.

The V6's and V8's are the cars most likely to have seized sump pan bolts as the exhaust runs close to the 'box.

Also this should only be done if you have the right tools and you have the right experiance and confidence. A Star or other diag equipment is really a must to get the temp 100% perfect.

Oh and thanks for the lend of the 210.
 
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MarkBPC200

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Hi. Would you happen to know the ATF dipstick length (only actual insertion part) needed for a 1999 C200 W202 T model please. Also the min/max Mark distances from end. I really need to figure out if needs topping up Today/Tomorrow as have really Long journey to do Friday and not enough time to receive Ordered proper dipstick.
Regards
MARK
 

Justintyme

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Hi. Would you happen to know the ATF dipstick length (only actual insertion part) needed for a 1999 C200 W202 T model please. Also the min/max Mark distances from end. I really need to figure out if needs topping up Today/Tomorrow as have really Long journey to do Friday and not enough time to receive Ordered proper dipstick.
Regards
MARK
Hi Mark. This is the dipstick I use in my 2010 E class ,it has the 722.6 Transmission, so should be the same. Bear in mind that the ATF in the 722.6 trans has to be at 80c, and the car sitting 100% level when its being checked. You can see the black diamond ( arrowed )on my dipstick and this is the stopping point for the dipstick, the other end can be hanging way outside the dipstick tube, but that wont matter, as long as its long enough to reach well into the tube. In the 2nd pic, the total measurable length of dipstick needed. Sorry for the background to the pics....they were taken in a hurry!!!
 

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MarkBPC200

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C200 W202
Just remember safety is first. Wear gloves and be carefult as the oil is HOT. It will blister your skin.

The V6's and V8's are the cars most likely to have seized sump pan bolts as the exhaust runs close to the 'box.

Also this should only be done if you have the right tools and you have the right experiance and confidence. A Star or other diag equipment is really a must to get the temp 100% perfect.

Oh and thanks for the lend of the 210.

Hi Mark. This is the dipstick I use in my 2010 E class ,it has the 722.6 Transmission, so should be the same. Bear in mind that the ATF in the 722.6 trans has to be at 80c, and the car sitting 100% level when its being checked. You can see the black diamond ( arrowed )on my dipstick and this is the stopping point for the dipstick, the other end can be hanging way outside the dipstick tube, but that wont matter, as long as its long enough to reach well into the tube. In the 2nd pic, the total measurable length of dipstick needed. Sorry for the background to the pics....they were taken in a hurry!!!
Awww Thanks so so much...
Absolutely brilliant. Your a STAR M8Y.
Regards
Mark
 

Justintyme

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Awww Thanks so so much...
Absolutely brilliant. Your a STAR M8Y.
Regards
Mark
Welcome, hope that it goes OK for you. Any question's just ask. Blackc55 made a few good points there as well...regarding proper temp, I use my iCarsoft OBD reader to make sure that the temp is 100% correct.
 

Kerabo

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Connect the Star and bring up the gearbox temp.

DSCF4993.jpg


Fill up the gearbox with another 3L of fluid. Put the Car in "D" with the parking brake on and allow to warm up. It can take a while! 80C is the temp to check the oil at.
DSCF4991.jpg



Dip the sump with the dipstick with the gearbox in "N" or "P".

DSCF4994.jpg


DSCF5000.jpg


The highest level is the 80c one. It must be up there for the level to be correct.
You may need to top it up. You will need between 6-7L in total. Just add a small amount at a time.

Re-set the gearbox adaptations with the Star too. This will help you get smooth gear changes.
Thank you.
 

Kerabo

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Connect the Star and bring up the gearbox temp.

DSCF4993.jpg


Fill up the gearbox with another 3L of fluid. Put the Car in "D" with the parking brake on and allow to warm up. It can take a while! 80C is the temp to check the oil at.
DSCF4991.jpg



Dip the sump with the dipstick with the gearbox in "N" or "P".

DSCF4994.jpg


DSCF5000.jpg


The highest level is the 80c one. It must be up there for the level to be correct.
You may need to top it up. You will need between 6-7L in total. Just add a small amount at a time.

Re-set the gearbox adaptations with the Star too. This will help you get smooth gear changes.
Hello
is 80 deg the top mark?
I checked mine after a 10 Mike run and went through the sequence and checked in N with engine running.
its on the bottom marks. Should it be the top marks?
thank you.
 

W1ghty

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Hello
is 80 deg the top mark?
I checked mine after a 10 Mike run and went through the sequence and checked in N with engine running.
its on the bottom marks. Should it be the top marks?
thank you.
80 is the top mark , I doubt 10 minutes is long enough , try again at 20-25 mins
 

zipdip

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As W1ghty has said you need to run the car for longer than 10 mins,if you or others want to check or change the oil in MB gearboxes I would buy a cheap heat sensor gun,around £14 gets you one on ebay,for me I would rather pay Ollie at Prestige or my local guy to do the job.
 

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