[W126 Coupe] Tranie Question

[Richard Hogarth]

Camran,
The Rubber gaskets can be reused. 
The kind of shifting problem that you are experiencing sounds very much like
a vacume modulator problem.  Check the vacume hoses all the way down to the
modulator. A vacume hose may have gotten dislodged, or cracked if it's old
during the oil change surgery. 
-RPH
 
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Camran Nassiri
Sent: Monday, April 02, 2007 3:13 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Tranie Question
 
Hi Dick- I am glad you asked the question about the filter.  That perhaps
could be the culprit.  I believe I put it back the same way the old one was
in there; had no idea that the filter can be installed in different
positions.  I know for sure that it is the right side up; but, cannot
guarantee I had it 90 or 180 turned.  Can that have happened?  If so I have
to take the whole thing appart and check and make sure.  One thing I know is
that the problem wasn't there before I changed the oil and filter.  If I
take it appart do I need a new gasket again or can I use the new one I put
in last time I changed the oil?
 
Thank you Dick and everyone else who has provided tremendous helpful hints.
 
Camran


> Date: Mon, 2 Apr 2007 12:07:10 -0400

> From: spell.yy at verizon.net

> To: mbcoupes at mbcoupes.com

> Subject: Re: [W126 Coupe] Tranie Question

> 

> Hi Camran:

> 

> I see in your original post that you serviced the tranny properly. Got 

> to ask, did you note the orientation of the filter when putting in the 

> new one? In other words, no chance you put it together incorrectly? 

> You did return the torque converter drain plug? You did use the correct 

> fluid? I know all rather obvious questions but, if one item is done 

> incorrectly the tranny can start behaving badly. Assuming you feel 

> confident all of thiss was done correctly, I'd just go ahead with the an 

> adjustment to the Bowden cable to see if that clears the late shift for

you.

> 

> 

> Refer to the manual for your year/model. Should just be a turn or two 

> in the right direction to get rid of the late shift. Adjusting the 

> Bowden cable will result in an earlier shift for all gears not just 

> 3-4. You should be able to find a happy medium that gives you the 

> pick-up desired and better shift points. You are not describing flaring 

> so I'd leave the vacuum modulator alone for now. Start with the Bowden 

> adjustment (3 minute job) and see if the shifting is improved.

> 

> Regards,

> 

> Dick

> 

> Camran Nassiri wrote:

> > RPH- I have checked and re-checked the fluid level and it is right on 

> > the second line. However, as I drive the car it seems like it dosen't 

> > want to change gears unless I let off the gas; especially the last 

> > gear. Getting on the freeway the other day I was at 75 MPH and let 

> > off the gas and that's when it switched to the 4th gear. Is that normal?

> > 

> > Camran

> > 90 560SEC, 91 420SEL

> >

> >

> > ------------------------------------------------------------------------

> > From: R_Hogarth at Foundrycove.com

> > To: mbcoupes at mbcoupes.com

> > Date: Sun, 1 Apr 2007 20:29:38 -0500

> > Subject: Re: [W126 Coupe] Tranie Question

> >

> > During a transmission service, the torque converter will never

> > completely drain by just letting it sit.

> >

> > Fluid will always be left below the level of the output shaft spline.

> >

> > To drain it completely during a transmission service, the

> > Tq-Converter either needs to be removed or a hole drilled on the

> > outside of the Tq Converter on either side of the seam weld. Once

> > drained, the hole is plugged with a self tapping tapered plug.

> >

> > It's a lot of work to get the last 1.5 qts of tranny fluid out.

> >

> > -RPH

> >

> > 

> >

> > *From:* mbcoupes-bounces at mbcoupes.com

> > [mailto:mbcoupes-bounces at mbcoupes.com] *On Behalf Of *Jonathan Hodgman

> > *Sent:* Friday, March 30, 2007 3:28 PM

> > *To:* Mercedes Coupes Mailing Lists

> > *Subject:* Re: [W126 Coupe] Tranie Question

> >

> > 

> >

> > Don't know, but any transmission builder I've spoken with has

> > explained it as mentioned prior, which makes sense. You want to

> > check the fluid level with it as close to driving conditions as

> > possible. The longer you wait, the more time the converter has to

> > drain into the pan which is why you run/drive/cycle the car

> > through the gears in the first place.

> >

> > Perhaps MB doesn't want any sloshing to throw the reading off, ie,

> > if fluid wiggles it's way back up the tube some.

> >

> > When I check the level I re-check it about 3 times @ each try as

> > they never come out exactly the same each time. I consider the

> > level to be where it consistently comes up to on the stick on both

> > sides of the dipstick.

> >

> > So far so good;-)

> >

> > Jonathan

> >

> > On 3/30/07, *Shayegan, Richard* <rishayegan at davidson.edu

> > <mailto:rishayegan at davidson.edu>> wrote:

> >

> > Why does the service manual say to wait 1 to 2 minutes? Not being

> > contradictory, just asking.

> >

> > 

> >

> > ------------------------------------------------------------------------

> >

> > *From:* mbcoupes-bounces at mbcoupes.com

> > <mailto:mbcoupes-bounces at mbcoupes.com>

> > [mailto:mbcoupes-bounces at mbcoupes.com

> > <mailto:mbcoupes-bounces at mbcoupes.com>] *On Behalf Of

> > *Jonathan Hodgman

> > *Sent:* Friday, March 30, 2007 1:48 PM

> > *To:* Mercedes Coupes Mailing Lists

> > *Subject:* Re: [W126 Coupe] Tranie Question

> >

> > I wouldn't do the waiting after having the car in gear. You

> > want to check the level as Quickly as possible after running

> > the car through all the gears. All waiting does is allow the

> > fluid to start draining from the torque converter back into

> > the pan, thus giving an inaccurate reading.

> >

> > Jonathan

> >

> > On 3/30/07, *Shayegan, Richard* <rishayegan at davidson.edu

> > <mailto:rishayegan at davidson.edu>> wrote:

> >

> > When hot (and I mean hot), it should be just up to the max

> > line (mine actually will bleed out to where it's like 75%

> > towards the max side in between the two marks if I fill it to

> > the max line) if you get it hot, stop, put it in P, wait 2

> > seconds, R, wait 2 seconds, N wait, D, wait, and then back

> > (again with waiting between shifts), then let it idle for

> > 60-120 seconds then check it.

> >

> > 

> >

> > If you check it cold (i.e. at shop temperature) with the

> > engine running, run it through the gears with a wait between

> > shift, it should be slightly below the min-line, IIRC 5mm

> > below on the 722.3 transmission.

> >

> > Richard

> >

> >

> > -- 

> > Blue Ridge Mercedes/AMG East

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> >

> > 1996 S600 Euro "Scharnhorst"

> > 1991 560 SEC Full Euro ECE

> > 1991 560 SEC 226Hp/271ft/lbs:)

> > 1989 560 SEC AMG (N.Amer 250/295)

> > 1987 560 SEC US Spec

> > 1986 560 SEL AMG 6.0L 32V

> > 1986 560 SL White on Burgundy

> > 1985 500 SEL Euro (Parts Car)

> > 1985 300 CD For Sale

> > 1980 280 SE Euro

> > 1978 300D TMU

> > 1987 560 SEL 162K Midnight Blue on Gray RIP:(

> > 1987 560 SEC Sold

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> > 1990 560 SEC 154K Anthracite on Gray (Sold)

> > 1988 300 TE 160K Burgundy on Palomino (Sold)

> > 1980 280 SE US 185K (Sold)

> > 2006 Z4 3.0Si M spec 6sp

> >

> >

> > The MB Coupes Website!

> > W126 SEC Mailing List

> > Postings remain property of MB Coupes, L.L.C.

> >

> >

> >

> >

> > -- 

> > Blue Ridge Mercedes/AMG East

> > Offering Enthusiast Service, Restoration and Modification.

> > Providing quality parts to discriminating customers in all parts

> > of the world.

> > Located in the Greater Atlanta area.

> > http://www.blueridgemb.com <http://www.blueridgemb.com/>

> > http://www.AMGEast.com <http://www.amgeast.com/>

> >

> > 1996 S600 Euro "Scharnhorst"

> > 1991 560 SEC Full Euro ECE

> > 1991 560 SEC 226Hp/271ft/lbs:)

> > 1989 560 SEC AMG (N.Amer 250/295)

> > 1987 560 SEC US Spec

> > 1986 560 SEL AMG 6.0L 32V

> > 1986 560 SL White on Burgundy

> > 1985 500 SEL Euro (Parts Car)

> > 1985 300 CD For Sale

> > 1980 280 SE Euro

> > 1978 300D TMU

> > 1987 560 SEL 162K Midnight Blue on Gray RIP:(

> > 1987 560 SEC Sold

> > 1992 E300D 140K Champagne on Parchment tex (Sold)

> > 1990 560 SEC 154K Anthracite on Gray (Sold)

> > 1988 300 TE 160K Burgundy on Palomino (Sold)

> > 1980 280 SE US 185K (Sold)

> > 2006 Z4 3.0Si M spec 6sp

> >

> >

> > ------------------------------------------------------------------------

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> > ------------------------------------------------------------------------

> >

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> > Postings remain property of MB Coupes, L.L.C.

> 

> 

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