Transmission fluid line - PeachParts Mercedes-Benz Forum

Paul H · #1 08-03-2012, 09:56 PM

I first want to say thanks to everyone for their paticipation in this forum. I usually don't ask questions because I can just search and usually find the answer multiple times!
I have a '79 300CD with w123 body. I have a transmission cooling line on the drivers side that has a small hole in it where the rubber piece from the clamp fell out and the vibration wore a hole in it. The guys here sell the flex hose near the cooler that this line attaches to. I want to know if there is an easy way to fix this line or is it possible to buy raw material and make my own? What is the best option here folks?
Thanks in advance for all of the help.

Diesel911 · #2 08-04-2012, 10:59 AM

Our members have different methods of dealing with the issue.

Some have cut the Tubing in 2 at the site of the leak and gotten Generic Transmission Cooler Hose; shoved both ends of the Tubing into it and used Hose Clamps. Some Autopart stores and NAPA sell the Transmission Cooler Hose buy the Foot.

Others have used a Hydraulic Fitting called a Compression Fitting Union. One way to do it is similar to doing what was explained with the Hose.

I suppose another way would be to cut the Tubing Insert a Hose on the Tubing side; grind of the Collar on the old Transmission Cooler House where it attaches to the Radiator; remove the Collar and yank off the Hose exposing the Hose Barb.
So you would Slide the Hose over the Tubing and put one or 2 Hose Clamps on it and insert the other End of the Hose over the Hose Barb on the Fitting and use a Hose clamp.

You could also buy a new tubing from the Dealer

In the above methods if you want a Clamp you need to relocate it of make another one.
Below is a pic of a Compression type Union fitting.

Stretch · #3 08-04-2012, 01:25 PM

I obviously don't know about your budget requirements but 17 USD doesn't seem too much to me =>

PeachParts FastLane Mercedes Parts Store

If you shop around you can get other makes for less I believe.

A word of warning - replace both of these lines as soon as possible. The cooling side of the transmission is on the safe side of the transmission filter. If the rubber hoses degrade on the inside then rubber bits can end up going straight into the transmission valve body causing you a slightly more irritating problem.

Make sure you follow the instructions in your owner's handbook carefully for refilling the transmission fluid level when you finish replacing these parts. It is quite easy to get the fluid level wrong - which then causes yet more irritations!

Paul H · #4 08-04-2012, 07:43 PM

Thanks guys!
I like those options.
Army, money is tight here for us Okies. I did mention that Phil has the flex line and it is $17, but the hoie is in the rigid line that attaches to the flex line.
Happy cruising.
Paul H.

Diesel911 · #5 08-04-2012, 10:50 PM

Translation for Army who is from the UK and Lives in Holland. Okie = a Person who lives in the State of Oklahoma in the US.

At one time it was called Indian Territory (Native American) because the US forced the Native Americans to relocate to that area.

I think in the 1920s it was also an area that had a lot of Oil and Oil Fields.

Except for the Oil Fields it was mostly a Farming and Ranching area.

Stretch · #6 08-05-2012, 03:37 AM

Quote:

Originally Posted by Diesel911

Translation for Army who is from the UK and Lives in Holland. Okie = a Person who lives in the State of Oklahoma in the US.

At one time it was called Indian Territory (Native American) because the US forced the Native Americans to relocate to that area.

I think in the 1920s it was also an area that had a lot of Oil and Oil Fields.

Except for the Oil Fields it was mostly a Farming and Ranching area.

Okie dokie!

Thanks!

Stretch · #7 08-05-2012, 03:43 AM

Quote:

Originally Posted by Paul H

Thanks guys!
I like those options.
Army, money is tight here for us Okies. I did mention that Phil has the flex line and it is $17, but the hoie is in the rigid line that attaches to the flex line.
Happy cruising.
Paul H.

Oh right the rigid line - well that costs a lot more than the flexible lines...

Easiest way has got to be a second hand part - if you can find one.

However, the pipes themselves are just brazed / soldered together - if you can't find decent hydraulic fittings for a good price perhaps you can find solder fittings - don't people like McMaster-Carr sell that kind of stuff in the US?