Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-26-2021, 02:16 PM
Registered User
 
Join Date: Jun 2020
Posts: 20
Clutch master cylinder please help

Hi
bit of a back story to this one so please bare with.

right, August last year clutch went on motorway. Had master and slave cylinder changed. Was to busy at the time to do it myself which I normally would have but had far to much work on.

drove out of the garage and the bite point was on the floor, thought that doesn’t seem right so went for a ten minute drive to see if things improved, it didn’t so drove back to the garage, the bloke said it will bleed itself right with use.

stupidly I left it at that. Since then I have gone for a couple of spins and always meant to have a look at it it but kids, work etc etc, don’t get a bloody minute to think.

any way had a look today and found a leak, fluid on the pipe from the master to the slave, found the leak to be coming from the elbow that connects the master cylinder to the hose from the fluid reservoir. The elbow is moving in and out no resistance at all not a tight fit in the slightest.

can anyone help with a part number for a replacement elbow and hose and how i go about fitting them properly. Can it be done with the master cylinder still in situ or will it be easier to remove?

cheers

hope someone can help

dan

Reply With Quote
  #2  
Old 02-26-2021, 02:39 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,613
I'd try to clamp it if possible, or cut off some of the old material to get past a stretched place.

Don't ever drive with the pedal going to the floor!
__________________
[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.
Reply With Quote
  #3  
Old 02-26-2021, 04:50 PM
Registered User
 
Join Date: Feb 2011
Location: Modesto CA
Posts: 4,078
Dd:

Assumption: since not stated, the vehicle is a W123.

1) The supply hose leak.
The plastic 45deg. angle fitting originally had tapered bulbs on each end to provide a tight fit in the hose and in the grommet in the clutch master cylinder. It is likely that the bulb in the M/C grommet has been broken off by Harry Hammer Hands while attempting to change the fitting to the new M/C.

2) The low clutch engagement point.
At the top of the clutch M/C push rod is an eccentric bolt that serves to adjust the free play clearance of the pedal. That eccentric should be adjusted such that the pedal has about 1/16-1/8" of free movement before the push rod starts to move the piston in the M/C.
In the event that that little free play cannot be achieved, it is likely that a short push rod has been installed in a M/C that requires a long push rod. Yes, unfortunately there are two lengths of push rod and two versions of M/C.
Reply With Quote
  #4  
Old 02-26-2021, 05:14 PM
Registered User
 
Join Date: Jun 2020
Posts: 20
Thanks Frank, guess I need to contact mb with the vin
Reply With Quote
  #5  
Old 02-26-2021, 06:59 PM
Registered User
 
Join Date: Aug 2009
Posts: 370
did the new upper cyl come with the rod that connects to the pedal. if not there is a longer rod that may be needed
Reply With Quote
  #6  
Old 02-26-2021, 11:05 PM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,653
Dan, I get the drift you are in England?


I did a Google search for w123 master Cylinder.
Looks like the TRW comes with both length of rods.


https://www.buycarparts.co.uk/trw/2210680


Several years ago on Peach Parts and other MB part
sites, you could buy just the Rod of ea length.



That eccentric bolt is a PITA to adjust.





Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #7  
Old 02-27-2021, 02:30 AM
Registered User
 
Join Date: Jun 2020
Posts: 20
Cheers guys,

I bought the master cylinder all complete. I bought it from a parts shop that I always use rather than the dealer. How can anyone tell that they have the right or wrong m/c though there must be something obvious on the car or vin number that tells you.

How do I adjust the eccentric bolt?

Are the 45 degree elbows still available new?

So the fact that mine pulled right out and was letting by ever so slightly I don’t think it was pushed in properly, could this cause a soft pedal and low bite point?

Yes I am in Blighty England
Cheers

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 07:42 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page