Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-02-2010, 06:16 PM
Biodiesel300TD's Avatar
|3iodiesel300T|)
 
Join Date: Dec 2004
Location: Albany, OR
Posts: 4,845
3-4 flaring shift.

I've replaced the B2 and K1, and now my 1-2 and 2-3 shifts are nice and firm. Fresh fluid and filter. Is there a kit for getting rid of the 3-4 flaring?

__________________
Andrew
'04 Jetta TDI Wagon
'82 300TD ~ Winnie ~ Sold
'77 300D ~ Sold
Reply With Quote
  #2  
Old 01-02-2010, 06:48 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
One would think, after six years, that you'd provide a vehicle model with the OP.............
Reply With Quote
  #3  
Old 01-02-2010, 06:49 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
did you re do the high speed clutch as well ?????????

it also helps to know what 722. what ever it is
Reply With Quote
  #4  
Old 01-02-2010, 06:51 PM
John Schroader's Avatar
Registered User
 
Join Date: Jan 2007
Location: Kentucky
Posts: 404
Howdy Bio, I'm pretty sure you are way ahead of me on this one, but here goes: When I bought my wife's 300SD a few months ago, it had a terrible 3-4 slip. Probably why the price was so reasonable. Got it home and gave the Bowden cable a couple of turns and it shifts like a dream. I really expected to have to do more, but that's all it took. Maybe you could be so lucky.
__________________
John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln
Reply With Quote
  #5  
Old 01-02-2010, 07:02 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
IF had he not said he was inside the unit and NOW this happened, that was not their before, i would agree

BUT you are correct not enough pressure is also a cause and can be corrected it that way
Reply With Quote
  #6  
Old 01-02-2010, 07:08 PM
LuckyEddie's Avatar
Registered User
 
Join Date: Mar 2008
Location: Wilmington, NC
Posts: 202
Quote:
Originally Posted by johnjzjz View Post
IF had he not said he was inside the unit and NOW this happened, that was not their before, i would agree

BUT you are correct not enough pressure is also a cause and can be corrected it that way

Will this also cause the transmission to stack the 2-3 shift??? I have one that is only in 2 for an instant then 3 and slips into 4??????

Robert
Reply With Quote
  #7  
Old 01-02-2010, 07:21 PM
Biodiesel300TD's Avatar
|3iodiesel300T|)
 
Join Date: Dec 2004
Location: Albany, OR
Posts: 4,845
Sorry it's in my 82 300TD.

The B2 was done before I got the car, I just did the K1 and fluid and filter changed yesterday. Prior to the work yesterday I had bad flaring on the 2-3 and 3-4 shifts. It's was really bad when cold and would firm up when warm but still flared. After the K1 the 2-3 shifts are nice and firm, but the 3-4 is still flaring.

Mr. John Schroader I've adjusted the bowden cable before but it was for hard shifts, because the it was shifting too soon, maybe I have it adjusted too far the other way, but I feel like the shift points are pretty good. But maybe I'll play around with it a little.

Quote:
Originally Posted by "johnjzjz
did you re do the high speed clutch as well ?????????
Never heard of it. Tell me more.
__________________
Andrew
'04 Jetta TDI Wagon
'82 300TD ~ Winnie ~ Sold
'77 300D ~ Sold
Reply With Quote
  #8  
Old 01-02-2010, 07:25 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
Quote:
Originally Posted by LuckyEddie View Post
Will this also cause the transmission to stack the 2-3 shift??? I have one that is only in 2 for an instant then 3 and slips into 4??????

Robert

Rule of thumb is the modulator controls the firmness of the shift - with the use of vacuum the least amount you have the higher the pressure will be hence the crisp shift

the cable (Bowden) controls the when it shifts - connects to the gas pedal and is depressed < cable is pulled outward controlling pressure as well

having said that they both control pressure in the valve body from 2 different directions so to speak --jz

Last edited by whunter; 08-07-2012 at 08:50 PM. Reason: spelling
Reply With Quote
  #9  
Old 01-02-2010, 07:29 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
Originally Posted by "johnjzjz
did you re do the high speed clutch as well ?????????

Never heard of it. Tell me more

YOUR 4 is High speed in the repair world
Reply With Quote
  #10  
Old 01-02-2010, 07:37 PM
Biodiesel300TD's Avatar
|3iodiesel300T|)
 
Join Date: Dec 2004
Location: Albany, OR
Posts: 4,845
Quote:
Originally Posted by johnjzjz View Post
YOUR 4 is High speed in the repair world
Alrighty, is there a part I can get and do my self.
__________________
Andrew
'04 Jetta TDI Wagon
'82 300TD ~ Winnie ~ Sold
'77 300D ~ Sold
Reply With Quote
  #11  
Old 01-02-2010, 07:51 PM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by Biodiesel300TD View Post
Is there a kit for getting rid of the 3-4 flaring?
Superior shift kit K722A-D.

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=S68165D&Category_Code=722-3vbkits&Product_Count=1

Last edited by tangofox007; 01-02-2010 at 07:58 PM.
Reply With Quote
  #12  
Old 01-02-2010, 07:54 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
no its an internal issue not a DIY

BUT you can go and turn up the modulator pressure a bit and let the trans shift a little later, - than maybe you personally would not like the length of delay on shifting and it just might cure the flair

its a used car lot trick it does not infer its all better but it will give you more / driving before it due for a re build < letting it slide around will wear it out in a hurry -- jz
Reply With Quote
  #13  
Old 01-02-2010, 07:59 PM
Registered User
 
Join Date: Nov 2006
Location: jersey
Posts: 188
Quote:
Originally Posted by tangofox007 View Post
Superior shift kit K722A-D.

I disagree a valve body performance kit after the fact is not going to cure a high use unit - its usually done at a rebuild

more pressure might help it not flair
Reply With Quote
  #14  
Old 01-02-2010, 08:05 PM
layback40's Avatar
Not Banned
 
Join Date: Nov 2009
Location: Victoria Australia - down under!!
Posts: 4,023
Bio,
These people have a kit with about a dozen springs in it. Depending on your problem, you replace the appropriate spring. There was a thread on here about it a month or so ago. Hopefully the link will not be blanked out.
Good Luck!!

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=2&Category_Code=Mercedes
__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
Reply With Quote
  #15  
Old 01-02-2010, 08:13 PM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by johnjzjz View Post
I disagree a valve body performance kit after the fact is not going to cure a high use unit
Kindly explain how the K-1 kit improved the 2-3 shift. The Superior Kit does the same thing for the K-2 accumulator which is involved in the 3-4 shift.

My personal experience with the Superior Kit has been highly satisfactory.

Quote:
Originally Posted by johnjzjz View Post

more pressure might help it...
More pressure from the accumulator is precisely what the stronger springs in the kit deliver.

Reply With Quote
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:41 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page