zenman63

As above any tips on changing the pump, its one job I have to do on mine as it wines.

Plutoe

Yes detach AC compressor, remove left front fender liner, detach high pressure lines from oil pan---if this is done in the front yard you are crazy!!

Then there are loads of bleeding and filling instructions for install!!

typeriz

try changing the fluid.... get steering oil from merecedes, get a fluid pump and remove old fluid, and add new fluid. repeat process in a week, again.

mine used to whine heavy. i just changed the fluid and no more whine.

zenman63

Its not a problem, I have my own workshop and mercedes Star and wis etc.
Working on mercedes for the last 15 years.

zenman63

Done the pump but it still makes a noise! I will try bleeding tomorrow but does seem odd as I did what was advised in wis 30 time back and forth without the engine running to get the oil round.
Any tips?

zenman63

Its very quiet over here!
Its done anyway with pumping fluid round a few times sucking it out until its just clean and green.

typeriz

great that it worked out zenman63, sorry i was away and didnt read your post!

zenman63

It does still make some noise, I have sucked out the fluid again a couple of times and it improves but its should be silent ?

typeriz

it should be silent are you using MBenz Steering fluid??? the the filter might not be regurgitating properly, might need to replace the reservoir.

zenman63

Yes Green genuine MB fluid, is there a filter in an 09 reservoir? its cheap at £30 so will change it.

zenman63

New Reservoir fitted and 100% fixed it, its now silent .

I cut the old one up to see the screen and sure enough it was thick in black paste so causing restriction in flow and then cavitation.

typeriz

thats great that its fixed!!!