How to Repair Power Steering leak?
 

I beleive I have a power steering leak. I did and search and came across this thread. My car is 1984 300d.
http://www.peachparts.com/shopforum/diesel-discussion/263927-power-steering-leak.html?highlight=power+steering+line
However my leak is at the second connection in the picture, where it appears to be metal on metal and some sort of clamp connecting the two metal hoses.

What is the best way to go about repairing this? Any recommendations on the correct part to purchase?

Thanks.

Which colored Arrow points to where the leak is?

uhhh, nothing in those pictures has anything to do with P/S. P/S system is totally contained between the resevior near the big screw on fuel filter and the steering box directly in front of your steering wheel. No part of P/S comes close to the oil pan.

If you are seeing red fluid from that hose, it is transmission fluid.

Yeah, that seems to be your transmission cooler line.
Item #20 in the pic, maybe. Not sure exactly where the leak is, you're going to have to try and follow it.

Thank you. This is my first MB and I have only owned it for 3 days!

The leak is 100% coming from the location at the Red Arrow. That "fitting" is rusty and crumbling.

Any and all tips of what part to purchase and tips on installing the correct part with be hugely appreciated. I am not so handy, at all, but I want to tackle this if its reasonable for the newbie mechanic.

That item is part #019 997 80 82 looks like you may want to get the proper size flare wrench. Check other areas under the car for a rusty situation too.

Thanks again.

When I enter that part number in fastlane, I get a double female ended spring wrapped line. It does not look the same at all. Is it possible an upgraded part?

EDIT:

On Fastlane there is also and upper and lower transmission cooler line. It looks closer to these two parts, but not identical.

That hose replaced part #019 997 70 82. The spring wrap is a reinforcer/protectant. You'll have to inspect what have to see if it'll work, otherwise you may need to replace item #10 as well (#123 270 46 96) I can't locate that hose which has not been updated, call Phil.

Guys, take a 2nd look at where the Red Arrow is pointing.
The Red Arrow is the last one on the Right. It is pointing to a clamp that holds the Steel Tubing.
If it is leaking there the Steel Tubing itself must be leaking.

I agree, I've replaced one of my hard lines due to grommet under the clamp allowing the clamp to damage the line. The flex hose also appears to be in tough shape. I would clean up the whole area, remove the clamp and see if you can pinpoint the leak.

I looked around a little I am unable to find a part number for the tubing.

You will need to go to the Dealer, or go to the parts tab at Fastlane and on the left side you will see how to contact Phil.

Also what side of the Engine is the leaking tubing on?

There are some DIYs on replacing the tubing.

Do you have a part number for the Poster or some place where he can buy the Tubing. I could not find any info. Also I have ask him to be specific as to what side of the Engine the Tubing is on because that pictures are not of his vehicle.

I have had it happen and seen it happen on other vehicles. On the ones I have experience with vibration caused the clamp to cut through the Tubing.
But, the poster said it is rusted so that could also be a cause.

That picture is almost identical to my car exciept the leak is clearly coming from where the red arrow is. That metal hose is basically split in half. Moreover that "clamp" is rusty and falling off of the connection.

This is on the passenger side of the car. You can see it easily just looking right past the front of the passenger side front tire, without moving anything, right next to the oil pan.

The upper and lower transmisison cooler lines don't look quite like this on fastlane. I am exhanging emails with phil, but he sent me the same diagram as above. I need to give him a call. Thanks for all the suggestions. I need to research some of the DIY repairs for sure.

That car came with one of two transmissions, my previous pic was of a 722.4, this is of a 722.3, same part number for the left and right sides as previously stated.

Here's my CD, it has a 722.315. That steel line going back, item #802 in the pic is part #123 270 40 96.

I bought one a couple of years ago from the dealer, and they had to order it. I believe they are getting hard to find now. The hack is to cut out the leaking section and install a section of hose with clamps. That works, I ran mine like that for a couple of weeks until I got the part. Some folks have left that "repair" in place. I think the price was under $200 for one side.

Thanks again x3.

Any suggestion on the proper size of hose to use as a temporary replacement? Or in the alternative, what should I use to measure the diameter?

Thanks guys. Funny how I've owned this car for 3 days and I have managed to need a hard to find, special order part :)

As I recall, I just used a tubing cutter to take out a section about 2 inches long and brought it to a parts store to find the appropriate size fuel line and clamps. I don't remember the size. Then I slipped the hose over the section and clamped it in place.

I will report back my progress. I may not be able to do this until the end of the week.

Thank you again folks.

what kind of oil pressure can one expect in this area?

It seems to be very low pressure, even when mine was cracked it was only dripping.

I would use Oil Cooler Hose on it.
On a Gas Car I tried using Fuel Hose as a Transmission Cooler Hose and I did not make it a full month and it was leaking.
It was not the pressure it was the heat and the fact the it was not fuel but ATF iside of the hose.
I believe some members have used Compression type couplings to repair their tubing.

Quick update. I finally goy underneath the car. If you look at the red arrow you can see a metal bracket that holds the transmisison cooler line up against the oil pan. Well from what I gather (by looking at the drivers side) there should be a rubber gasket of sorts that is inbetween the metal bracket and metal line..... There material was so badly worn that it was metal on metal and that is why I sprung a leak as best as I can tell.

Also the only tranny cooler hose from auto zone or pepboys is 3/8s. I'm pretty sure that is too small. So I'm probably going to just purchase the darn line from Phil for $135 and be done with this.

Thanks for helping me thru this.

I have the lower tranmission cooler line. It will not be hard to install, except for draining the tranny and its freezing out.

Anyone have the tourque specs handy for the side that goes into the tranny and the other side?

Thanks.

My 300TD leaked in this exact spot. Replaced it with hose as described; years later still no problems with it! Cheap too. :D