W245-B180CDI-2007- CVT oil change (DIY) part 1 - Mercedes-Benz Forum

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Old 09-06-2010, 08:13 AM   #1 (permalink)
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Lightbulb W245-B180CDI-2007- CVT oil change (DIY) part 1

hello there,
I'm new here, so be lenient ....

My B-class hover 60 000 km/37 500 mile, and it was time to change the gearbox oil.
Gearbox is CVT - 722.8 .....
So after a little intelligence, I bought 6 liters oil, oil filter, trimming crankcase, copper washers for bolts of drainage holes.

I found free time and got to work.
I had previously checked in the WIS database, and I knew that my tork converter has a drainage hole .... It did change the oil a little of complex and clumsy ....
1.
so I downloaded metal shields below the car .....
left .....


right ....


2.
here is the oil sump of the gearbox ....


Here is a drain bolt ....


3.
now had to get the puck to the crankshaft.... the objective is to roll the converter to reach the drainage bolt .......
remove plastic cover under the right wing .... this is a clumsy work ....




here is the factory hole for access to the crankshaft ....

here you need an assistant, one will be watching the situation of the drainage pin of the converter and the other will rotate the crankshaft ....
with hexagonal key № 17 turn the crankshaft in the direction to the movement, while the drainage pin on the converter does not show ...

here is drainage pin on the converter ....


Here is a drain bolt on the oil sump of the gearbox....


to be continue
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Old 09-06-2010, 08:16 AM   #2 (permalink)
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Lightbulb W245-B180CDI-2007 - CVT oil change part 2

4.
Now gently, with torx T30, turn off drain bolt on the oil sump of the gearbox .... with hexagonal key № 4 turn off drain bolt on the converter and
carefully

the oil is hot, drain bolts are small and can easily be lost .....
prepared in advance bucket collect old oil ....


approximately 6 liters, inevitably some spills on the floor ....


Now check out the oil for chips and the smell of burning ... .... if there are no chips and no smell of burning will only replace the oil in the converter and box....otherwise you will need to flush and change the whole system .... this has a complex job ....

5.
after the oil drain gently unscrewing with torx T30 8 bolts of the oil sump and carefully separate the oil sump from the gearbox ....

be careful - oil sump is full with hot gear oil ....


here is the old oil filter ...


pull down oil filter .... be careful - it is full with hot gear oil ....


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Old 09-06-2010, 08:19 AM   #3 (permalink)
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Lightbulb W245-B180CDI-2007 - CVT oil change part 3

6.
CLEAN ... everything was carefully cleaned ....


new oil filter ....




7.
assembly ....
change the oil sump gasket,
install new filter on gearbox,
install oil sump back on gearbox,
change copper washer,
turning drainage pin on the converter,
turning drainage pin on the oil sump ....

8.
Filling gearbox with oil ....
Here the filling hole with protected pin ....


Broke lid on the security pin and pushed it down, then slipped the plug from the hole ...


Now open oil and fill in the hole ....


now 6 liters out, 6 liters inside ....


9.
Now start the car, only idling, start to move the gear lever between positions, such as the detention of about 10-20 seconds of each ....
looked underneath for leaks ..... i hope that no such ....

after the move several times in all gears, stop the engine and measure the oil level ...


If all OK, put back the plug in filling hole, put back the security pin ... put back metal shields under the car and you good to go ...

That's all folks .....
sorry for my English ....

may the force be with you !
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Old 09-06-2010, 09:32 AM   #4 (permalink)
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Old 09-06-2010, 12:31 PM   #5 (permalink)
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Nice photos and good work. How do you refill the torque converter once it's drained?

I suspect that a dealer change does not involve the torque converter.
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Old 09-06-2010, 01:41 PM   #6 (permalink)
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The manual states 6.9 litres for the CVT and my dealer charged me for 4 litres therefore I believe the difference is in the converter.
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Old 09-07-2010, 12:19 AM   #7 (permalink)
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converter itself is full when fill the oil, then when the car is idling is filled bodily.
WIS database show that a volume of Gearbox depends on what we will drain :
1. gearbox oil without the converter - volume is 4 liters
2. gearbox oil with converter - volume is 6 liters
3. when removed and disassembled/assembled gearbox then oil a fully fill the box is 6.25/6.50 liters

Local dealer also changed the oil only from the box without any drain to converter, but this did not prevent him from charged the price of 6 liters oil ...

Last edited by Obi Kenobi; 09-08-2010 at 08:13 AM.
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Old 09-08-2010, 05:14 AM   #8 (permalink)
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Can you please explain how you checked the oil level, is this a tool or stick inserted in the oil fill hole or is there a seperate dip stick for it.
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Old 09-08-2010, 08:50 AM   #9 (permalink)
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Procedure is simple, if measured at about 50ºC/122 F oil temperature ....
Absolutely precise measurement you'll need a STAR DIAGNOSIS ....
Here it says WIS database for measuring :
record AR27.00-P-0100AK (11.5.06)

Measuring rod 16858901100.
Wipe off dipstick using lint free cloth. Chamois leathers are the most suitable.
Push the dipstick all the way into the oil filler pipe, pull out and read off the lowest scale value on the front and back of the dipstick.

Start engine, allow to idle in selector lever position “P”.
Call up the transmission fluid temperature using STAR DIAGNOSIS.
Check final filling of transmission with dipstick at specified transmission oil temperature and engine speed.
The transmission oil temperature and engine rpm must be maintained. Deviations cause inaccurate measurement.
The final filling can be inspected both at 50ºC/122 F (scale value : 2 to 4) and 80ºC/176 F ( scale value : 5 to 7), whereby each scale value (see brackets) must be noted.

Transmission oil temperature 50ºC(122F) /engine speed rpm 700 (+-50) /oil dipstick scale value 2–4
Transmission oil temperature 80ºC(176F) /engine speed rpm 700 (+-50) /oil dipstick scale value 5-7

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Old 09-08-2010, 01:44 PM   #10 (permalink)
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Quote:
Originally Posted by Obi Kenobi View Post
Procedure is simple, if measured at about 50ºC/122 F oil temperature ....
Absolutely precise measurement you'll need a STAR DIAGNOSIS ....
Here it says WIS database for measuring :
record AR27.00-P-0100AK (11.5.06)

Measuring rod 16858901100.
Wipe off dipstick using lint free cloth. Chamois leathers are the most suitable.
Push the dipstick all the way into the oil filler pipe, pull out and read off the lowest scale value on the front and back of the dipstick.

Start engine, allow to idle in selector lever position “P”.
Call up the transmission fluid temperature using STAR DIAGNOSIS.
Check final filling of transmission with dipstick at specified transmission oil temperature and engine speed.
The transmission oil temperature and engine rpm must be maintained. Deviations cause inaccurate measurement.
The final filling can be inspected both at 50ºC/122 F (scale value : 2 to 4) and 80ºC/176 F ( scale value : 5 to 7), whereby each scale value (see brackets) must be noted.

Transmission oil temperature 50ºC(122F) /engine speed rpm 700 (+-50) /oil dipstick scale value 2–4
Transmission oil temperature 80ºC(176F) /engine speed rpm 700 (+-50) /oil dipstick scale value 5-7


Thanks, does measuring rod 16858901100 include the ruler/scale with it and how much does it cost.
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