Manual Clutch Hydraulic Line Replacement - PeachParts Mercedes-Benz Forum

Ken300D · #1 03-20-2006, 09:45 AM

What have you used as a source for the manual clutch hydraulic line? I'm going to try Phil shortly, and I wonder what other people have done for a line replacement - are these metric lines generally available in the local auto stores?

I am having periodic difficulties with the clutch releasing. This usually happens when the car has been on the road a while. The first time it happened was when the brake fluid got lower than the clutch line level in the reservoir. I have had master cylinder issues and just got that replaced - found out the M/C was leaking into the booster. Good feeling to take care of that.

So, I decided that the clutch slave must be leaking, since the clutch problem first showed up when the fluid level was too low to supply the clutch system from the reservoir. In taking off the clutch slave cylinder, the hydraulic line seized to the fastener and I twisted it and broke off the end.

Now looking for a replacement hydraulic line. Got the whole line out of the car and found it is a two-piece deal, with a flexible hose in the middle. Makes sense, the flex hose absorbs the engine movement relative to the chassis.

I have two alternatives -

1) Replace the whole two-piece system with OEM equivalent parts.

2) Saw off even the remaining tube end, flare it, and use a union to connect in another piece of line. This presumes I can find something to fit in the way of a union and fittings.

---------------------

Also, the result when I got the slave cylinder off was no visible sign of a leak. However, the pushrod was quite worn. Comparing it to the new slave cylinder, at least 1/8 to 1/4 inch of the rod is worn away! This may help my clutch issue a bit. Did you apply any grease to the end of the slave cylinder push rod? I would expect you have to be careful with grease in the clutch area.

Any experience on all this?

Ken300D

bgkast · #2 07-23-2006, 04:36 AM

Bump. I need to replace the flexible line on my new 240D. It spurts fluid every time the clutch is depressed.

Ken300D · #3 07-23-2006, 07:15 AM

I should be able to find the part numbers Phil ordered through MB for my car. Mercedes used to supply several different versions of the hydraulic tubing parts that go from the slave cylinder to the master cylinder. As you know by now there are two sections of line. The line from the slave cylinder runs over the top of the transmission and includes a section of flexible hose. Then another section runs into the passenger compartment.

On my car, the metal line seized to the holding nut at the slave cylinder. This resulted in twisting the line off when I had to change the cylinder.

The exact fit line for the US cars does not seem to be available any more. Phil was able to locate the one remaining line MB stocks. It is too short to fit as the other one did - however it can be made to work just fine. You just can't clamp it into place at the engine/transmission junction as the OEM line went. There is a holding slot in the top of the transmission and that's the only place to hold the line now.

Also, the MB parts book indicates a certain plastic clip MUST be purchased with the line. This is to be used at that transmission/engine clamp location. You may find that you can't use it, so either don't order it at the same time or be prepared to send it back (don't open the plastic bag).

Ken300D

bgkast · #4 07-23-2006, 03:36 PM

If you cold find that part # I would appreciate it. Is it possible to replace the half and half file with a aftermarket piece of flexible rubber high pressure hose?

t walgamuth · #5 07-23-2006, 04:28 PM

i have a hard time believing the correct part is not available.

i would use a factory part if it were mine.

unless actually unavailable.

tom w

bgkast · #6 07-23-2006, 08:26 PM

Guess I will try the stealer, and if they don't have it I know of a hydraulic shop in town that should have all I need. I can go for a "bling" braided stainless flex line.

bgkast · #7 07-24-2006, 01:19 PM

I just called the dealer, and the parts are still available. The hard line off of the master cyl is $45 or so, and the half rubber half steel line is $55 or so. I think I will see if a hydraulics shop can make me something for less $$$.

Jim Anderson · #8 07-24-2006, 01:23 PM

I have gone to a local place for power steering lines, they do industrial and custom work, here:

http://www.ormebrothers.com/

Ken300D · #9 07-24-2006, 01:26 PM

My understanding is that the parts the dealer will get for you are "closest fit" substitutes for the original items. Will be interested in the part numbers you actually get and if the lines will fit the OEM path.

I am sure I have the part numbers that were given to me and will post them when I find that message.

Ken300D

Ken300D · #10 07-25-2006, 07:04 PM

Here's the initial quote from Phil:
---------------
1232951013 No longer available Lower line
1232900213 No longer available Upper line
The only other option is the 1232950713 $32.50 Special Order
---------------

Then he found the MB parts system required a substitute:
---------------
Mercedes informed me that your hydraulic line has been replaced with the
following parts
THIS PART IS REPLACED BY
460-295-01-13 Line
123-295-03-40 Fitting
123-295-03-50 Fitting
This will run an additional $20.
---------------

I was not able to use the two "fitting" part numbers. These items consisted of a replacement clamp, and a replacement bushing to go between the clamp and the hydraulic line. I was not able to clamp that end of the line. However, the line is held in the middle by a notch in the top of the transmission hump, using a piece of rubber hose.

Let's see if you get the same thing.........

Ken300D

bgkast · #11 07-25-2006, 08:55 PM

The dealer I called was able to find the half and half hose, but the metal line that passes through the fire wall was cross listed to a different part. I went to the hydraulic shop and they said that it would cost about the same as correct parts for them to make something up. $100 later I have them on the way from the dealer.

t walgamuth · #12 07-25-2006, 11:02 PM

good deal

tom w

Ken300D · #13 07-26-2006, 10:34 AM

Yes, all I ended up from MB was the "half-and-half" section of line. That was all I really needed, but originally I intended to replace the whole line while I was working on that project. The new line is nicely anodized and should not corrode - thus I am sure it will outlast the car. The other line has just a bit of corrosion on the end that exits the passenger compartment, and so I will touch that up with POR-15 to protect it.

It was good to be able to replace the section of line that had the old rubber hose. Please report back if what you get is the same 460- part number that I was sent, and if not, let us know what you received. Also, if you can compare the new and old lines for length - let us know that result too.

Ken300D

bgkast · #14 07-26-2006, 03:39 PM

Will do. I'm picking them up today.

bgkast · #15 07-26-2006, 08:57 PM

I got them in. The Metal line that exits the firewall came as a straight piece, but a little quality time with my tubing bender had it fitting fine. I can't figure out how to attach that plastic clip to the transmission, but it doesn't really matter, because I will be pulling the engine/transmission soon anyway. The part #s are: A 460 295 01 13 for the half and half hose and A 109 320 77 53 64 for the line that passes through the firewall. Hope this helps. -Bryan

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