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Leak from the steering rack

20090 Views 8 Replies 5 Participants Last post by  Kajtek1
Hello guys

I have a leak coming from the seal rings/hollow screw on the steering rack gear as you can see on the attached pictures. I know that this is not a pretty common issue but your help is much appreciated.

I also want to make a sticky on this DIY too :thumbsup: so This is a good change to help out :D

The seal rings number is A0249977148 and the hollow screw # is A2109900763 on the epc parts list for steering gear and steering linkage.

I went to a MB dealer and i got the seal rings. So far so good. I'm trying to DIY on this one (i already changed the thermostat by my self thanks to a DIY sticky) but i cannot unscrew the hollow screw and i'm scared to use more strength and damage it. :crybaby2:

Has anyone repaired this leak? How do i unscrew the hollow screw?

Again your help is much appreciated and also this could be a good sticky DIY


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Looking at the picture, it looks like you need Torx sockets, not ordinary sockets.

Thanks for your answer Kobus,

I already have Torx sockets and already tried to unscrew it but it seems as though i may break it if i try to apply more strength.

I'm uncertain to do that and that's why i'm trying to seek advice with you guys. :thumbsup:

Should or should i not apply more strength or is there another way to unscrew it?

Thank you :eclipsee_steering:

My take is that it likely has fine threads and, given it's diameter, will need some persuasion to remove. There is a sealing washer under it if I'm looking at the EPC correctly. It looks like it's #14 Hollow Screw on the attached.
There's another picture suggesting the leaker is the high pressure side.

Any possibility there is residual pressure?

I recall from other posts that you will need to bleed the system well following your work as it's easy to introduce air into the system which is difficult to remove.


Thanks for your answer Skippy. Your help is REALLY appreciated.

You´re correct about the EPC.

It needs to have 2 seal rings (item #11, part #A0239979148) for each hollow screw (item #14 part #A2109900763). I will try to use a bit more strength to unscrew it. :)

Now you also said that i need to bleed the system well after replacing the seal rings. Would you mind giving me some good ideas how to do it? :bowdown:

Thank you
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