[W126 Coupe] Tranie Question

[Camran Nassiri]

Hi Richard- I am going to jack the car up tonight and look and make sure the vacuum line hasn't been disconnected.  As you said that's a fairly simple fix; I 've got my fingures crossed.  Thanks for all your help.
Camran


From: R_Hogarth at Foundrycove.comTo: mbcoupes at mbcoupes.comDate: Mon, 2 Apr 2007 23:31:51 -0500Subject: Re: [W126 Coupe] Tranie Question






Camran, 
Your problem still sounds like no vacuum at the modulator. You are describing a classic symptom. 
You should be sure to check it as it is also the simplest thing to fix. 
-RPH
 


From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Camran NassiriSent: Monday, April 02, 2007 5:46 PMTo: Mercedes Coupes Mailing ListsSubject: Re: [W126 Coupe] Tranie Question
 
Hi Dick- That's good news about the filter.  I did take off the drain plug from the torque converter and put it back with a new washer and torqued both filter and the plug according to the manual specs. I used Valvoline Dextron III/Mercon ATF and this is the first time I've changed the tranie fluid in the 420; but, I have done it several times on my 560.  420 was one owner car with 111,000 miles and was maintained to the mfg spec by a dealer.I'll try the Bowden cable this W/E and wil let you knwo the results.  Thanks again for taking the time and giving me your advice.Camran> Date: Mon, 2 Apr 2007 17:07:35 -0400> From: spell.yy at verizon.net> To: mbcoupes at mbcoupes.com> Subject: Re: [W126 Coupe] Tranie Question> > Hi Camran:> > I've just checked my notes on a few tranny services I've done on the 126 > 300SE's in the past. The filter only goes up one-way. But, it must be > fully seated and the torque converter drain plug should be fully seated > with a new seal (metal washer). I would adjust the Bowden cable first. > You can always return it to it's original position if it does not remedy > the shift point issue you have. Failing that, turn the T on the > modulator clockwise just 1 full turn.> > The Bowden cable will make all your shift points a tad earlier in all > gear ranges. The modulator will, when turned clockwise, reduce the > presence of vacuum resulting in a firmer shifting between gears in all > ranges.> > What type of tranny fluid did you use and is this a job you've done > before? How many miles on the 420 and was fluid always changed at the > prescribed 30k intervals?> > Dick> > Camran Nassiri wrote:> > 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> > > > 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> > > >> > > >> > > > 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> > > >> > > >> > > > > > ------------------------------------------------------------------------> > > > Your friends are close to you. Keep them that way.> > > > <http://spaces.live.com/signup.aspx>> > > > > > ------------------------------------------------------------------------> > > >> > > > The MB Coupes Website!> > > > W126 SEC Mailing List> > > > Postings remain property of MB Coupes, L.L.C.> > >> > >> > > The MB Coupes Website!> > > W126 SEC Mailing List> > > Postings remain property of MB Coupes, L.L.C.> >> >> > ------------------------------------------------------------------------> > i'm making a difference. Make every IM count for the cause of your > > choice. Join now! > > <http://clk.atdmt.com/MSN/go/msnnkwme0080000001msn/direct/01/?href=http://im.live.com/messenger/im/home/?source=wlmailtagline> > >> > ------------------------------------------------------------------------> >> > The MB Coupes Website!> > W126 SEC Mailing List> > Postings remain property of MB Coupes, L.L.C.> > > The MB Coupes Website!> W126 SEC Mailing List> Postings remain property of MB Coupes, L.L.C.



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