Transmission K1 Piston Spring Repair - Page 5 - Mercedes-Benz Forum

Reply
 
LinkBack Thread Tools Display Modes
post #41 of 52 (permalink) Old 11-18-2010, 09:50 AM
BenzWorld Member
 
driftmeister's Avatar
 
Date registered: May 2008
Vehicle: MB W126 300SEL, MB W124 260E, MB W209 CLK200, Skyline R34 GTT Veilside,
Location: Malaysia
Posts: 341
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Bowden Cable with ATF leak on 722.3 transmission

Hi guys

Just detected a dripping leak at the plug where the cable is attached to the transmission. It is a new part bought during the rebuilt 2 months ago. Indy tried to put sealant to stop the leak but after driving from work then home only i detected the leak started again. Check the ATF level and it seems overfilled.

Car going back in to the workshop first thing tomorrow morning. Wondering is there a seal or install method required when installing the bowden cable plug?
Attached Thumbnails
Click image for larger version

Name:	20101118-_1210670.jpg
Views:	467
Size:	135.7 KB
ID:	342751   Click image for larger version

Name:	20101118-_1210677.jpg
Views:	530
Size:	144.5 KB
ID:	342752   Click image for larger version

Name:	20101118-_1210680.jpg
Views:	968
Size:	166.1 KB
ID:	342753  
driftmeister is offline  
Sponsored Links
Advertisement
 
post #42 of 52 (permalink) Old 11-19-2010, 09:51 AM
BenzWorld Junior Member
 
Javman's Avatar
 
Date registered: Oct 2010
Vehicle: 1983 300sd, 1979 300d
Location: Phoenix, Arizona
Posts: 46
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
I believe you need this o-ring. I just ordered new bowden cable and o-ring and plan on doing this after I get my new, hopefully working, modulator installed. I have 722.303 tranny

Your Parts Search Returned 1 Part(s)

[SIGPIC]
Javman is offline  
post #43 of 52 (permalink) Old 11-20-2010, 05:48 AM
Premium Member
 
foolio2's Avatar
 
Date registered: Oct 2009
Vehicle: 1986 420SEL - 2001 BMW 325xiT - 2013 BMW M3
Location: Indianapolis, IN
Posts: 1,024
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Premium Member
Quote:
Originally Posted by driftmeister View Post

After putting the ATF 6 litres, which my parts guy told me to buy 6+1 (standby) so i didn't expect it to be slightly overfilled now. Have to re-check again and should i remove some of it? Will the transmission get damaged for overfill?

Detected a leak from the kickdown plug hole at the transmission, not sure why the seal gave way probably due to the new buildup pressure from the K1 spring kit.
Overfilling will most likely not cause immediate, catastrophic damage, but it can lead to the ATF foaming which in turn can cause slippage. I would try to get the level right; especially if you are tinkering with the adjustments to tune the shifting.

---------------------------------------------------------------------------------------------
1986 Black on Grey 420 SEL (560 Interior Swap)
1986 Smoke on Burgundy 300 SDL - SOLD

foolio2 is offline  
post #44 of 52 (permalink) Old 11-20-2010, 12:45 PM
BenzWorld Member
 
driftmeister's Avatar
 
Date registered: May 2008
Vehicle: MB W126 300SEL, MB W124 260E, MB W209 CLK200, Skyline R34 GTT Veilside,
Location: Malaysia
Posts: 341
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Thanks guys...sorted out by removing the 1 quart of excess ATF. Probably it was my mistake because i read somewhere that we need 6 quarts for every change of ATF service. Anyway will check whether my O-Ring need to be change, since my rebuilt the bowden cable is new but hope my Indy change the O-ring at the same time.

Update on the K1, reduce flare with upshift of 3000rpm for 2-3. I am happy now since it will upshift when cold start in the morning. Previously it would be like free gear and upshift at 4500-5000rpm. My transmission is a 722.319, after adjusting my bowden cable without any slack...is there any way of reducing the 2-3 upshift at 2500rpm or less?
driftmeister is offline  
post #45 of 52 (permalink) Old 12-09-2010, 06:33 AM
BenzWorld Senior Member
 
Date registered: Sep 2006
Vehicle: 1997 s320, 1994 E320 Cab, 1989 300ce (parting out soon)
Location: Baton Rouge La
Posts: 525
Mentioned: 0 Post(s)
Quoted: 21 Post(s)
Quote:
Originally Posted by tjyak50 View Post
I bought a spare K1 kit from Mercedes of Avondale (Phoenix).
If anybody needs one it is surplus to my needs.

Tj
do you still have the kit

126 270 44 77

I need to do this service on my 95 e320. Flare at 2-3

1997 S320 140k miles
1994 e320 Cab 90k miles


Sold: 1972 280SE 4.5 153k miles. The car that started my passion for simple, well made automobiles.
lee polowczuk is offline  
post #46 of 52 (permalink) Old 01-11-2011, 08:58 AM
BenzWorld Elite
 
Date registered: Mar 2010
Vehicle: 560SEC, 190E, Frontier, 240Z
Location: Phoenix
Posts: 1,329
Mentioned: 0 Post(s)
Quoted: 16 Post(s)
I've decided that I don't like the Mercedes supplied K1 spring.
My flare is long gone, but the 2-3 shift is very soft and lady-like.
Adjusted the modulator to no effect.

Subsequently I removed the K2 spring to amend the 3-4 shift but put it all back without replacing anything. After that the 3-4 shift became more firm.

So I am left with a soft 2-3 shift and a firm 3-4 shift that I cannot adjust away with Modulator adjustments.

Thinking about ordering those aftermarket springs and trying those. Maybe find some new pistons too and replace those.

Any input is appreciated.

TJ

Tom Johnson, Phoenix, Az
2010 C350
1988 560SEC
1993 190E-2.6
1973 240Z (Track only)
2003 F350 7.3
tjyak50 is offline  
post #47 of 52 (permalink) Old 01-12-2011, 10:32 PM
BenzWorld Elite
 
Date registered: Mar 2010
Vehicle: 560SEC, 190E, Frontier, 240Z
Location: Phoenix
Posts: 1,329
Mentioned: 0 Post(s)
Quoted: 16 Post(s)
On advice from my Indy Mechanic in Phoenix: David Terry,... I reduced the Modulator pressure a bit and put a teence more preload on the kickdown cable.

That helped delay and soften the harsh 3-4 shift and seemed to make the 2-3 shift more positive.

Will drive for a while and see how it goes.
Normally I only drive the SEC on weekends but its been my daily for the last week while my normal driver (Nissan Frontier) is being used as an aircraft tug...

Tj

Tom Johnson, Phoenix, Az
2010 C350
1988 560SEC
1993 190E-2.6
1973 240Z (Track only)
2003 F350 7.3
tjyak50 is offline  
post #48 of 52 (permalink) Old 02-20-2011, 10:12 PM
BenzWorld Member
 
rudelover2's Avatar
 
Date registered: Feb 2007
Vehicle: 1995 S600 Coupe * SOLD
Location: New York
Posts: 59
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Shift correction package 722.3 / 722.4 Gas Makco Transmission Parts

Seems to have a shift correction kit with various springs.
Could this be a solution to the 1-2 and 3-4 bad shifts/flare

1995 S600 Coupe
rudelover2 is offline  
post #49 of 52 (permalink) Old 02-21-2011, 07:59 AM
BenzWorld Member
 
driftmeister's Avatar
 
Date registered: May 2008
Vehicle: MB W126 300SEL, MB W124 260E, MB W209 CLK200, Skyline R34 GTT Veilside,
Location: Malaysia
Posts: 341
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Looks like you have to keep recycling your ATF fluid each you the spring is changed....should be worth it if the flare is cured...
driftmeister is offline  
post #50 of 52 (permalink) Old 02-21-2011, 08:18 AM
BenzWorld Extremist
 
scottx's Avatar
 
Date registered: Apr 2010
Vehicle: 85 190e/8v & 89 420 SEL
Location: New Braunfels, Texas
Posts: 1,073
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Send a message via AIM to scottx
This saved my transmission 7 months ago and it's still shifting good. I think anyone with shifting issues should do it first. (Along with a filter/fluid change)

$8 part saved me from a rebuild.


Professional Mobile Electronics Installer & Fabricator [R]
Champagne Dream - w201.024 - http://www.ChampagneDream.org/

Last edited by scottx; 02-21-2011 at 08:22 AM.
scottx is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W126 S,SE,SEC,SEL,SD,SDL Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    Similar Threads
    Topic Author Forum Replies Last Post
    '03 W211 Wagon Rear Hatch Piston Repair benzwagonfan W211 E-Class 4 10-05-2011 05:17 PM
    The B2 piston and my Transmission 86 420 sel W126 S,SE,SEC,SEL,SD,SDL Class 3 11-17-2010 01:27 AM
    DIY Mercedes 722.3 722.4 722.5 Transmission K1 Piston Spring Repair Kit Install HATTENATOR W201 190-Class 83 10-27-2010 12:19 PM
    b2 piston repair... TOEUP W201 190-Class 5 10-03-2008 01:51 AM
    Just replaced B2 piston, K1 spring ... now hard shifting pdxbiodiesel W123 E,CE,D,CD,TD,TE Class 3 05-30-2008 06:41 AM

    Posting Rules  
    You may post new threads
    You may 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 Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome