Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    


Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-28-2005, 04:35 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,262
'80 300D transmission adjustment

Have the 2-3 flare on my '80 300D. Transmission shifts VERY softly- softer than my 300SE. Besides the 2-3 shift, there is not flaring.

Some of you guys have replaced the k1 spring to fix this problem, but this car doesn't have that, or a modulator.

How do I adjust it so all gears shift firmly?

Lots of info in the archive, but all seem to address the later models.

Thanks.
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
Reply With Quote
  #2  
Old 12-28-2005, 09:44 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,262
anyone?
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
Reply With Quote
  #3  
Old 12-28-2005, 10:09 PM
Registered User
 
Join Date: May 2001
Location: Michigan
Posts: 1,373
Look under 'flaring' with 'diesel don' and you'll find an article by Steve Brotherton (or similar spelling). I think his article was for multiple models. Extremely thorough. My first thots include:

1. the cable
2. the vacuum feed (not even sure this is accurate on an '80)
3. modulator on the driver's side of the tranny (again, might be wrong model)

On one of my cars, I simply had to live with it. Hammering down on the pedal sure helped. The cars tend to want to flare when you're going easy on the acceleration.

let me know via email if you can't find the article

dp
__________________
DAILY DRIVERS:
'84 300DT 298k (Aubrey's)
'99.5 Jetta TDI IV 251k (Julie's)
'97 Jetta TDI 127k (Amber's)
'97 Jetta TDI 186k (Matt's)
'96 Passat TDI 237k (Don's
'84 300D 211k Mint (Arne- Undergoing Greasecar Conversion)

SOLD:
'82 240D 229k (Matt's - Converted-300DT w/ 4 speed
Reply With Quote
  #4  
Old 12-28-2005, 10:09 PM
JimmyL's Avatar
Rogue T Intolerant!!!
 
Join Date: May 2004
Location: Sunnyvale, Texas (DFW)
Posts: 9,665
Quote:
Originally Posted by fahrgewehr2
Have the 2-3 flare on my '80 300D. Transmission shifts VERY softly- softer than my 300SE. Besides the 2-3 shift, there is not flaring.

Some of you guys have replaced the k1 spring to fix this problem, but this car doesn't have that, or a modulator.

How do I adjust it so all gears shift firmly?

Lots of info in the archive, but all seem to address the later models.

Thanks.
Been there, done that! Your modulator is on the passenger side of the tranny. I'll attach a pic of the one from my old '80 wagon. It is red and the pic is when I was laying upside down under the car. You remove a cover on the end with pliers by crimping a ring-type clip holding it in place. When removed there is a metal tab inside the modulator that fits in different grooves. You will understand when you see. Clockwise for firmer/later shifts on this model. Actually more for the shift point than for the firmness.
There was a 3/2 valve on the valve cover that sent vacuum to the tranny modulator. The more vacuum, the sooner the shift. Vacuum is what makes the shift. I had to mess with the vacuum to the modulator, then mess with the modulator. As the throttle/linkage travel increases (more force on accel. pedal) the vacuum to the modulator should decrease. It will require some "messing with", and trial and error. Only move tranny modulator tab one notch at a time. I would pull up on ramps, make an adjustment, back off the ramps and drive down the road. Did this for quite some time before I got it right. Ended up perfect though. The smoker had it's issues, but shifted perfectly!
Miss that car........
Attached Thumbnails
'80 300D transmission adjustment-tranny-modulator.jpg   '80 300D transmission adjustment-mb-stuff-021.jpg  
__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 Daughters

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
Reply With Quote
  #5  
Old 12-28-2005, 10:34 PM
linguica's Avatar
Oh yeah....wicked!!!
 
Join Date: Oct 2005
Location: Greenville, NC
Posts: 134
fluid change?

Quote:
Originally Posted by fahrgewehr2
Have the 2-3 flare on my '80 300D. Transmission shifts VERY softly- softer than my 300SE. Besides the 2-3 shift, there is not flaring.

Some of you guys have replaced the k1 spring to fix this problem, but this car doesn't have that, or a modulator.

How do I adjust it so all gears shift firmly?

Lots of info in the archive, but all seem to address the later models.

Thanks.
I have the exact same trans. symptom on my 85 300d. Getting ready to change fluid and filter(as soon as my back straightens out). The color is looking brown/rust and no record of when it was last done...might try some trans-x until then. If that doesn't get me anywhere, then I will pursue other options.
__________________
85 300D (California) 220k
03 Silverado 1500 Xcab Z-71 Guzzler 90k Real American steel(made in Canada)
03 Suburban 1500 4x2 Guzzler 170k Real American steel(made in Mexico)
Diamondback hybrid
Element skateboard(mileage unknown)

Good news for diesel owners...There's no such thing as cold...only the absence of heat!

"Beer is proof that God wants us to be Happy." Benjamin Franklin

"Possession....the King of sin." The Avett Brothers
Reply With Quote
  #6  
Old 12-28-2005, 11:26 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,262
Thanks

Thanks for the replies.

http://www.continentalimports.com/ser_ic20242.html

(article link, for others watching this thread)

I'll check out my setup and report back.
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
Reply With Quote
  #7  
Old 01-07-2006, 04:36 PM
Registered User
 
Join Date: Nov 2005
Location: Nashville, TN
Posts: 1,081
My car flares more with More foot on pedal

Quote:
Originally Posted by diesel don
On one of my cars, I simply had to live with it. Hammering down on the pedal sure helped. The cars tend to want to flare when you're going easy on the acceleration.

dp
Just throwing this out here while I research. I have read some of the articles and post s on flareing and have not seen anyone mention flare with more accelaration. Here's my situation ;

1981 300D NA(non turbo) -- Shifts smooth as glass with my foot barely on the accelartor. I can normally never feel it shift from 1 to 2. It flares like mad if I hammer down on the pedal (Very annoying and dangerous when pulling out into traffic). . Taking my foot off the pedal (which I sometimes have to do) causes it to kick into grear instantly.

So, I am deducing my flare has something to do with the position of the throttle. Reading on "flare'' , I realize that could be linkage or vacuum right? Or are these mutually exclusive ?

Thanks
__________________
What Would Rudolph Do?
No Mercedes , 2005 Passat TDI wagon, 2005 Chrysler T&C Minivan - stinky gasser
Reply With Quote
  #8  
Old 03-28-2006, 09:44 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,262
Found the modulator, but I hesitate to adjust it if the problem can be solved with a K1 kit.

This link which was posted by a forum member says the kit is good for 722.3 trannies.

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=S68165D

How do I find out which tranny I have in my diesel?
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
Reply With Quote
  #9  
Old 03-28-2006, 10:35 PM
JimmyL's Avatar
Rogue T Intolerant!!!
 
Join Date: May 2004
Location: Sunnyvale, Texas (DFW)
Posts: 9,665
Quote:
Originally Posted by fahrgewehr2
Found the modulator, but I hesitate to adjust it if the problem can be solved with a K1 kit.

This link which was posted by a forum member says the kit is good for 722.3 trannies.

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=S68165D

How do I find out which tranny I have in my diesel?
My guess is you have the 722.1xx tranny. Somebody else will be able to tell you how to tell.
I again just offer my explanation above. Not the most thorough I guess, but it worked well. Just keep track of which way and how many times you turn the modulator pin. Document everything you do, everything you change. That way you can always go back to the starting point and try something differently.
__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 Daughters

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
Reply With Quote
  #10  
Old 03-28-2006, 10:41 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,262
Thanks for your replies Jimmy.

I will call the dealer with my VIN number and see if they can tell me.

If the K1 kit is not applicable to my car, I will follow your instructions.

Thanks for your help.
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
Reply With Quote
  #11  
Old 03-29-2006, 06:15 AM
Admiral-Third World Fleet
 
Join Date: Feb 2002
Location: Central FL
Posts: 3,065
Easiest way to tell a 722.1xx from a 722.3xx is just to look at the fluid pan. The former has 4 bolts retaining it, the latter 6 bolts.

Rick
__________________
80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
Reply With Quote
  #12  
Old 07-09-2006, 10:21 PM
linguica's Avatar
Oh yeah....wicked!!!
 
Join Date: Oct 2005
Location: Greenville, NC
Posts: 134
fixed

Quote:
Originally Posted by linguica
I have the exact same trans. symptom on my 85 300d. Getting ready to change fluid and filter(as soon as my back straightens out). The color is looking brown/rust and no record of when it was last done...might try some trans-x until then. If that doesn't get me anywhere, then I will pursue other options.
I ran 2 cans of trans-x for about 1000 miles. Today I changed fluid, filter and k1 kit. Shifts great!
__________________
85 300D (California) 220k
03 Silverado 1500 Xcab Z-71 Guzzler 90k Real American steel(made in Canada)
03 Suburban 1500 4x2 Guzzler 170k Real American steel(made in Mexico)
Diamondback hybrid
Element skateboard(mileage unknown)

Good news for diesel owners...There's no such thing as cold...only the absence of heat!

"Beer is proof that God wants us to be Happy." Benjamin Franklin

"Possession....the King of sin." The Avett Brothers
Reply With Quote
  #13  
Old 07-10-2006, 01:22 AM
Registered User
 
Join Date: Oct 2004
Location: southern Oregon
Posts: 77
well maybe this helps .I had a bad flare recently wich went away after reconnecting the piece of linkage that connects throttl linkage to that vacume unit on the back of fuel injection pump now she shift really firm
__________________
81 300sd 81 300td 87 300dt
Reply With Quote
  #14  
Old 07-10-2006, 02:09 PM
Registered User
 
Join Date: Aug 2005
Location: Palmdale/Ventura, CA
Posts: 795
Arrow On a 1980, check the valve on top of the engine

My 1980 300D (which I have owned since 1984) has
had a nasty flare on 2-3 shift for more than a decade....
until now. It shifts better than it ever has after I replaced
the little valve on top of the engine with the vacuum lines running to it.

Unlike other models with a cover over the valve, my 300D has a very visible
valve and some vacuum lines.

I tested the valve with a vaccum pump (mighty-vac type) and compared the results to a brand new one I happened to have.
It was clear the old one leaked. The new valve is easily $30 to $45 and
can be bought here through Fastlane or from your dealer.

Originally I was going to only replace the worn out valve lever ( a $3 item),
but decided to check the valve while in there, really glad I did.

Here is my post on the subject :

2-3 Flare on Shift - replaced 3 way valve.
__________________
80 300D 333K Owned 29 yrs
83 300SD 404K Owned 8 yrs - Daily Driver 150mi/day
02 Z71 Suburban 100,000
02 Kia Optima (SE V6) 154,000
00 Harley Sportster 24k
Various Honda Dirt Bikes
Reply With Quote
  #15  
Old 07-10-2006, 07:54 PM
linguica's Avatar
Oh yeah....wicked!!!
 
Join Date: Oct 2005
Location: Greenville, NC
Posts: 134
glad that worked for you.

Quote:
Originally Posted by rhodes2010
My 1980 300D (which I have owned since 1984) has
had a nasty flare on 2-3 shift for more than a decade....
until now. It shifts better than it ever has after I replaced
the little valve on top of the engine with the vacuum lines running to it.

Unlike other models with a cover over the valve, my 300D has a very visible
valve and some vacuum lines.

I tested the valve with a vaccum pump (mighty-vac type) and compared the results to a brand new one I happened to have.
It was clear the old one leaked. The new valve is easily $30 to $45 and
can be bought here through Fastlane or from your dealer.

Originally I was going to only replace the worn out valve lever ( a $3 item),
but decided to check the valve while in there, really glad I did.

Here is my post on the subject :

2-3 Flare on Shift - replaced 3 way valve.

My car is a '85 300D Cali. I does not have the vac. valves you are talking about, so I was pretty sure the k1 was the problem...and it sure was .

Mark
__________________
85 300D (California) 220k
03 Silverado 1500 Xcab Z-71 Guzzler 90k Real American steel(made in Canada)
03 Suburban 1500 4x2 Guzzler 170k Real American steel(made in Mexico)
Diamondback hybrid
Element skateboard(mileage unknown)

Good news for diesel owners...There's no such thing as cold...only the absence of heat!

"Beer is proof that God wants us to be Happy." Benjamin Franklin

"Possession....the King of sin." The Avett Brothers
Reply With Quote
Old 07-10-2006, 07:54 PM
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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



All times are GMT -4. The time now is 06:24 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page