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Old 06-27-2001, 02:09 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
One of my power steering hoses is leaking. I haven't looked closely to see if it's a feed or return hose. In any case, it's a ~10" length of rubber hose which fits between a metal tube extending from the pump reservoir and a metal line going to the power steering fluid cooler. It seems to have plain hose clamps on either end.

Two questions:

- is replacing this hose as straightforward as it looks?

- does the power steering system have to be bled or just refilled after this hose is replaced?

- if it has to be bled, is there anything besides RTFM?

91 300SE
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Old 06-27-2001, 03:17 PM
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Make sure your ps hose fittings are tight, many times this is the culprit.
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Old 06-27-2001, 06:46 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745

This hose has some bulging near the clamp similar to bulging of an old radiator hose.

91 300SE
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Old 06-27-2001, 10:45 PM
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I'd say replace the hose for sure, might as well do both. Not sure about bleeding the system off hand. Make sure you replace the hoses with new clamps (just as you would with upper/lower radiator hoses).

Good luck,
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Old 06-27-2001, 11:45 PM
Mike Murrell's Avatar
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Join Date: Feb 2000
Posts: 2,141
Sixto - bleeding's a piece of cake. Fill with the special MB fluid as per 126 CD, put on cap, start engine and turn steering wheel all the way to the left; all the way to the right...back and forth 4 or 5 times to bleed it out. Pull cap and top off if necessary. You may even want to change the filter while you are in there. Mann part H85. Hengst also make one - do not remember the Hengst number.

Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC

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