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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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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.




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I had a thought about the force needed to loosen the nut. Any possibility you could find a rack at a junk yard and experiment on it first? Maybe there's one at your local dealer.

The other question concerning air in the system is covered well in the sticky's here:

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