Technical How to bleed Comfort Matic gearbox 2013

[daimlermg]

I need to flush the clutch (brake fluid) and bleed it but I can’t find the bleed nipple. I know where it is on the euro 6 2016 gearbox but I just can’t find it on my 2013 1st facelift.
so far I have sucked it out of the reservoir and filled it back up.
its an A class.
Anyone know where it is ?
this is a photo of mine
UPDATE
is it this part circle in red.? How does it work? Do I pull little spring clip out then pull the pipe out then? Is there a bleed nipple inside the black plastic and how do I open the valve or is there a one-way valve in there?
I’m nervous. I just pulling the pipe out without knowing beforehand what’s going to happen?

My overall problem is the Motorhome is stuck on my drive with gears unavailable and Short of getting a crane to get it out of my drive because it requires a multipoint to get it out. I’m a bit stuck.

 

[MSjoberg]

I need to flush the clutch (brake fluid) and bleed it but I can’t find the bleed nipple. I know where it is on the euro 6 2016 gearbox but I just can’t find it on my 2013 1st facelift.
so far I have sucked it out of the reservoir and filled it back up.
its an A class.
Anyone know where it is ?
this is a photo of mine
UPDATE
is it this part circle in red.? How does it work? Do I pull little spring clip out then pull the pipe out then? Is there a bleed nipple inside the black plastic and how do I open the valve or is there a one-way valve in there?
I’m nervous. I just pulling the pipe out without knowing beforehand what’s going to happen?

My overall problem is the Motorhome is stuck on my drive with gears unavailable and Short of getting a crane to get it out of my drive because it requires a multipoint to get it out. I’m a bit stuck.

I have no hands-on experience from a 2013 but I have read a lot about Comfortmatics and have, before this, not seen anything about different locations for the clutch bleed nipple. I think you are looking in the wrong place. Your picture seems to show the media converter/ clutch master cylinder. On my own car and in all descriptions I have seen, the bleed nipple is further down. There should be a pipe/tube going from the media converter to the bleed nipple, closer to the slave cylinder.

 

[daimlermg]

I have no hands-on experience from a 2013 but I have read a lot about Comfortmatics and have, before this, not seen anything about different locations for the clutch bleed nipple. I think you are looking in the wrong place. Your picture seems to show the media converter/ clutch master cylinder. On my own car and in all descriptions I have seen, the bleed nipple is further down. There should be a pipe/tube going from the media converter to the bleed nipple, closer to the slave cylinder.

Thanks for the reply I took the air filter out and I have found it much further down the pipe much further than on the 2016 engines,. It’s in such a bad place you can’t get your fingers around it to open it up but I did it in the end.

 

[timhg65]

Hi, please can I ask you, does the plastic bleed nipple just unscrew? Thanks Tim

 

[daimlermg]

Turn it 180 degrees anticlockwise. You might have a blue line showing when it is in the closed position.
It’s not hard to turn but is awkward as you can’t get your fingers down to it. I use a crows foot 13 mm spanner on the end of an extension.

 

[theoneandonly]

another chance to see this again today.
The screwdriver spanner needs a 3/8 of a turn Anticlockwise of the bleed nipple. There is no security clip(s) at all, (suggested on other forum posts, this may be a confusion of the 2 types of nipple ), note though that you cannot turn clockwise. Spanner is 13mm.
This may help

Brake/Clutch Bleed on a X290

On a manual gearbox this could be done as part of a brake bleed, Using a vacuum bleeder. The comformatic bleed is beyond the scope of this guide. How to use pump. Fit pump line to open hole in lid. Fit empty line to the hole with a pipe fitting...

www.fiatforum.com

 

[timhg65]

Thanks for all your help, I got the air filter box out tonight and can see the nipple. going to bleed it in the morning. Tim

 

[timhg65]

I had just replaced the electric fans as the hi speed was blowing the fuse, went to take it of the ramps and the gears were clunkey once off ramps lost all gears, in nutral and 'gear unavaliable' no other warning lights.

Followed you instructions, taking out air filter box. and sucked fluid through with a sryinge tighetend up bleed nipple and now all gears avaliable.

Thank you! Tim