There are 2 check valves on the front of the vac pump (on the TD, a
123), and there is a little plate that comes off to get at them, 2
screws. You DO NOT have to remove the vac pump to get them out -- just
unscrew those screws, take the plate off, and the check valves are right
there. Pay att
Is there a procedure on the MB CD that goes over how to replace the check
valve or can a second one be plumbed in to take over the function?
Andy
On Oct 27, 2007 2:41 PM, Rich Thomas <[EMAIL PROTECTED]>
wrote:
> OK thanks y'all -- lunchtime pondering got me thinking the same thing,
> so now I g
OK thanks y'all -- lunchtime pondering got me thinking the same thing,
so now I guess I gotta get the vac pump off. I might try a little
solvent in there first to see if the check valves are goobered up, see
if that cleans them out without having to dismantle it again.
--R
LarryT wrote:
> Wh
/oil
PORSCHE POSTERS! youroil.net
Weber Carb Info http://members.rennlist.com/webercarbs
.
- Original Message -
From: "Rich Thomas" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List"
Sent: Saturday, October 27, 2007 2:28 PM
Subject: [MBZ] Weird vacuum problem
>
> up, then vac needle going crazy bouncing between vac and pressure.
> Whussup wif dat? Took off the gauge and sho nuff you can feel
> huffing/puffing and no constant suction.
Check valves inside the pump. No question.
-- Jim
___
http://www.okiebenz.com
For
Puffing back and forth is a failed check valve - if the pump itself was
bad it wouldn't pull any air in. Oil in the lines makes me think
check valves, too (the ones on the pump, that is, not the one for the
booster).
However, your booster should not vent down completely on one pedal
push, yo
79 300TD I redid the brakes a couple weeks ago, new rear calipers, bled
out all old fluid, etc. Worked really fine.
A few days ago, no brake boost, or rather, a bit of boost at first pedal
push then nothing), slow turning off. Checked all the vac lines, looked
OK. Drove it again today, same
