'83 W123 300D




See the leak from the right side. That is spraying all over the left side of the engine compartment.Well, a light film really. What would cause this, the rest of the pump isn't leaking nor the steering box. I have a new filter I could swap in in the event it's gunked up.

Also, what PS fluid do these take, it's been a while.


Thanks guys

Have you looked at it while the car engine is running?

You can use standard ATF, ie, Dex III, and if I understand correctly, also:
Sheet 236.3 Steering gear oils (Partial list)
MB 236.3 Lenkgetriebeöl A 000 989 88 03
Fuchs Titan PSF (I think this is available at Pelican Parts)
LIQUI MOLY LENKGETRIEBE- ÖL 3100

References:
Factory Approved Service Products August 2007.
Available in PDF form at: www.startekinfo.com > MB Workshop Resources > Approved Fluids.

Mercedes-Benz Specifications for Operating Fluids (MB BeVo)
http://bevo.mercedes-benz.com/bevolisten/bevo-sheets-sort1.html

231.0 - General gear oils - 3.3 Steering gear oil.
231.1 - Specified gear oils (cars, cross-country vehicles) - survey
236.3 - Steering gear oils

__________________
Marshall Welch
Seattle, WA
1982 300D-T

For some of the pumps there's a gasket under the lid. But it looks like it is leaking from the hose connection in that picture (though it could just be pooling) - like mentioned above see what it is doing when it is running.

(Don't forget to check the fluid level - don't let it run dry)

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

If its not the cap seal or a loose hose fitting the only other place to leak is around the shaft seal....I guess theoretically there could be a crack in the housing.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I will have to check it tomorrow while I do some work to the car.

Have you ascertained the source of the leak?

The high-pressure line where the rubber meets the brass coupling is where my 300SD's high-pressure lines started weeping, necessitating replacing to stop the oozing/leaking from one line to the oil-cooler radiator assembly. I replaced both lines while I was at it. A real challenge getting them under the I5 3.0 engine. Took several hours contorting the lines and jacking up the engine to complete it. Your PS line(s) may not be that difficult to R&R. Even 20 years ago, man were the high-pressure oil-cooler lines pricey even w/ my MBCA and business MB parts counter discount.

Run your finger on the back side of the pulley to see if it's grimy back there. Have someone apply some throttle while turning the steering wheel to see if there's a more significant spray.

Is there residue on the underside of the hood? Maybe the fan's blowing PS fluid around.

Sixto
87 300D

It's the rubber hose that this fitting is a part of. When turning hard fluid sprays from a pinhole. Easy fix.

Other issue is the lack of heat...