Author Topic: Clutch Master Cylinder Rebuild question  (Read 3077 times)

BHap

  • Full Member
  • Senior
  • ***
  • USA, PA, Pittsburgh
  • Posts: 147
Clutch Master Cylinder Rebuild question
« on: September 30, 2011, 00:36:05 »
I have the Mercedes kit to rebuild my clutch master cylinder.  There is a rubber "bumper" with a hole in the center that fits the push rod.  Can anyone tell me the order of assembly ?  Spring < Piston < bumper? < washer < snap ring < boot < pushrod  or does the bumper go on top of the flat washer ?  I don't think I saw one coming out - so I'm not sure where this piece goes.  It has a "step" in the diameter and one end seems to fit the push end of the piston.  Also - does anything hold the boot into the master cylinder or do you just push it into the top?  Any help is appreciated...

Bob Happe
70 280SL, 4 speed

this is a link to a similar kit on ebay - the piece in question is the rubber piece on the right: http://cgi.ebay.com/ebaymotors/Mercedes-Benz-280-250-230-Clutch-Master-Cylinder-Kit-/280601176790?pt=Vintage_Car_Truck_Parts_Accessories&hash=item4155222ad6
« Last Edit: September 30, 2011, 01:05:42 by BHap »
Bob Happe
Pittsburgh, Pa
1970 280SL, white/black 4 speed

BHap

  • Full Member
  • Senior
  • ***
  • USA, PA, Pittsburgh
  • Posts: 147
Re: Clutch Master Cylinder Rebuild question
« Reply #1 on: October 02, 2011, 22:37:53 »
According to the Classic Center, the extra rubber "donut"/bushing is a grommet for a reservoir tank for models that mount direct to the master cylinder - essentially a "multi application" kit....  not needed on the 280SL...
Bob Happe
Pittsburgh, Pa
1970 280SL, white/black 4 speed

GGR

  • Inactive
  • Platinum
  • ******
  • USA, DC, Washington
  • Posts: 1470
Re: Clutch Master Cylinder Rebuild question
« Reply #2 on: October 03, 2011, 16:33:44 »
I don't know on the SL, but on the 3.5 Coupe that donut goes in the cavity where the line from the brake fluid line arrives to feed the system.

BHap

  • Full Member
  • Senior
  • ***
  • USA, PA, Pittsburgh
  • Posts: 147
Re: Clutch Master Cylinder Rebuild question
« Reply #3 on: October 04, 2011, 13:10:24 »
So on the 3.5 coupe the line feeding the brake fluid is not a compression fitting/hard line ?
Bob Happe
Pittsburgh, Pa
1970 280SL, white/black 4 speed