removing vacuum hoses? - PeachParts Mercedes-Benz Forum

Ra_ · #1 11-02-2005, 01:36 PM

Hi,

I've been reading the forum for awhile. My first real attempt at maintenance is not working out well.
I received the vacuum hose that I ordered and
I just made an attempt at replacing the visibly worst line.

I slipped the clamps off... but the hose doesn't seem to want to withdraw?

Seen from another angle:

The other end of the hose is stuck too...
but it 'overwraps' it's fitting, so it can be sliced off.

I read a few 'do it yourself' topics that mention vacuum and I also tried 'search'...
but I can't find anything that relates to removing the hoses.

If someone can point me to a relevant thread, I would be grateful.

I'm afraid to tug or twist any harder on the hose.
I don't really want to render the vehicle immovable.

I guess I should say that the car is an '87 300 SDL.

Gracias.

Brian Carlton · #2 11-02-2005, 01:43 PM

Welcome to the forum.

Sometimes they get stuck pretty well on the plastic fittings.

You definitely don't want to pull on them.

If you can't twist them and break the bonds loose, you'll need to cut the hose off close to the fitting and then carefully work a small knife in there and slit the remaining section of the hose. Once it's slit along it's length, it will probably come right out for you.

BTW, that metal clip is necessary on that line because it is a pressurized line from the ALDA. Be somewhat careful when you put it back on.

Ra_ · #3 11-02-2005, 01:47 PM

Thank you Sir.
I appreciate it very much.

I'll go try slipping something in there and see if it will break free.

Update:
I got the 'far' end of the hose off...
but the part that is pictured still has me stymied.
I haven't resorted to cutting it yet.
I've tried loosening around the edges with a shim...
but it almost seems like the hose runs all the way through the device and out the other side.

You can see where there is 'drippage', presumably from the hose in question,
as the hose end is right above the drips, when the assembly is mounted properly.

boneheaddoctor · #4 11-02-2005, 01:50 PM

Quote:

Originally Posted by Ra_

Thank you Sir.
I appreciate it very much.

I'll go try slipping something in there and see if it will break free.

Exacto knife is your friend in this case....push pull or trwist and you may break the plastic nipple the hose is stuck on...

Pete Burton · #5 11-02-2005, 01:58 PM

or in a pinch, you can grind off the back edge of a utility knife blade.

Ra_ · #6 11-02-2005, 02:22 PM

OK

I'm goin' back in.

Muchas gracias all.

Ra_ · #7 11-02-2005, 03:39 PM

I noticed the slit running up the far back side of the collar on my hose.
I tried to pry at the end of the hose through there, with a curved metal pick.
I finally used it to slice through the hose exposed there and I got it off.
Yay!

I replaced both bottom hoses and took it for a spin down the highway.
When I saw that it was running ok, I turned around and blasted over
the 7 Mile Bridge, figuring that it needed to cruise a little, to build up vacuum.
When I got back, it seemed to be shifting better, although still not perfectly.

Another 'symptom' was the wet windshield.
It just turned it a foggy white this time.
I don't know if that's an improvement, or if it has to do with the 'dewpoint',
or some other meteorological factors?

I'm delighted that I could accomplish the hose change,
especially after my initial failure.
Should I change them all, or should I leave the ones that look decent?
I guess that I should remove them to examine them,
so it's probably just as easy to replace them while they're off.

This forum is like a goose that lays golden eggs.
Thank you.

boneheaddoctor · #8 11-02-2005, 03:42 PM

Quote:

Originally Posted by Ra_

I noticed the slit running up the far back side of the collar on my hose.
I tried to pry at the end of the hose through there, with a curved metal pick.
I finally used it to slice through the hose exposed there and I got it off.
Yay!

I replaced both bottom hoses and took it for a spin down the highway.
When I saw that it was running ok, I turned around and blasted over
the 7 Mile Bridge, figuring that it needed to cruise a little, to build up vacuum.
When I got back, it seemed to be shifting better, although still not perfectly.

Another 'symptom' was the wet windshield.
It just turned it a foggy white this time.
I don't know if that's an improvement, or if it has to do with the 'dewpoint',
or some other meteorological factors?

I'm delighted that I could accomplish the hose change,
especially after my initial failure.
Should I change them all, or should I leave the ones that look decent?
I guess that I should remove them to examine them,
so it's probably just as easy to replace them while they're off.

This forum is like a goose that lays golden eggs.
Thank you.

Any vacuum lines that are tight and look good leave alone...if they come off easy then they are leaking...replace them..and lines that are split and look bad , well thats a no brainer.