PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   722.3 valve body cleaning and K1 etc Spring upgrade (http://www.peachparts.com/shopforum/diesel-discussion/296145-722-3-valve-body-cleaning-k1-etc-spring-upgrade.html)

rsieracki 03-21-2011 11:55 PM

722.3 valve body cleaning and K1 etc Spring upgrade
 
In a never ending effort to fix the erratic shifting on my SDL (already chased down vac leaks, rebuilt VCV and eliminated BFS and assorted leaking vac stuff) im thinking after reading several threads here and on other places on the web perhaps a superior shift kit may help (i have some flairing and other issues of over revving etc) my question is is there DIY anywhere on cleaning the valve body? my googlefu is failing me as i cant find a specific DIY or pdf of it anywhere. im thinking if i get the superior kit i might as well go over the entire valve body a indy mechanic whos trying to sell me a $2400 rebuilt trans said "cleaning the valve body may be a fix as it cud have clutch material etc clogging it"

Diesel911 03-22-2011 12:19 AM

I have read somewhere that you can buy an entire rebuilt Valve Body and use the old one as an exchange. And, the rebuilt Valve Body is supposed to have the updates.

Maybe someone can chime in and give some idea what exactly would be in the Valve Body that needs to be cleand out.

rsieracki 03-22-2011 12:44 AM

Quote:

Originally Posted by Diesel911 (Post 2684763)
I have read somewhere that you can buy an entire rebuilt Valve Body and use the old one as an exchange. And, the rebuilt Valve Body is supposed to have the updates.

Maybe someone can chime in and give some idea what exactly would be in the Valve Body that needs to be cleand out.

my understanding from the indy is that my clutches are worn and all the over revving/slipping wore them more and that particulate that is usually on the bottom of the pan *may* be in the valve body and can be causing the intermitant issues.

i should mention that this "goofy shifting" is experienced after its good and hot and been drive 30-45 mins

whunter 03-22-2011 02:04 AM

FYI
 
Quote:

Originally Posted by rsieracki (Post 2684749)
In a never ending effort to fix the erratic shifting on my SDL (already chased down vac leaks, rebuilt VCV and eliminated BFS and assorted leaking vac stuff) im thinking after reading several threads here and on other places on the web perhaps a superior shift kit may help (i have some flairing and other issues of over revving etc) my question is is there DIY anywhere on cleaning the valve body? my googlefu is failing me as i cant find a specific DIY or pdf of it anywhere. im thinking if i get the superior kit i might as well go over the entire valve body a indy mechanic whos trying to sell me a $2400 rebuilt trans said "cleaning the valve body may be a fix as it cud have clutch material etc clogging it"

Here is a cheap answer.


Mercedes-Benz 722.3 / 722.4 Automatic Transmission ATSG Rebuild Manual - Softcover
http://www.auto-repair-manuals.com/Mercedes-Benz-722-3-722-4-Automatic-Transmission-ATSG-Rebuild-Manual.html



.

rs899 03-22-2011 06:49 AM

1 Attachment(s)
Some info here, but you need a manual...


I did this a few years ago. It's really not too difficult, once you get the valve body split and track down where all the balls go. Be sure to RTFM and turn the VB over before you split it (don't ask).

There is an amazing amount of crud in there, and I don't care what anybody says, there is no additive made that is going to get in all the nooks and crannies and clean all that silt out.

Rick

rsieracki 03-22-2011 04:57 PM

Quote:

Originally Posted by rs899 (Post 2684817)
Some info here, but you need a manual...


I did this a few years ago. It's really not too difficult, once you get the valve body split and track down where all the balls go. Be sure to RTFM and turn the VB over before you split it (don't ask).

There is an amazing amount of crud in there, and I don't care what anybody says, there is no additive made that is going to get in all the nooks and crannies and clean all that silt out.

Rick

thanks... printed it out and reading right now...

what do i use to clean it? it dont specify... like what solvent and what can i use to get the crud out without damaging anything

bobodaclown 03-22-2011 06:04 PM

For the ATSG manual I did a google search. I used this search key: atsg manual 722 filetype:pdf

You may have good luck.

bobo

rs899 03-23-2011 06:43 AM

Once you have it split and all the little balls and springs are lying around, use carb or brake cleaner on everything and shoot copious amounts into the valve body cavities and cylinders.:)

Take pictures...here are some of mine on this old thread...

http://www.peachparts.com/shopforum/diesel-discussion/247854-1992-300d-no-reverse.html

babymog 03-23-2011 11:56 AM

I prefer MAF cleaner, supposed to be plastic safe.

whunter 03-23-2011 06:15 PM

Update
 
Nice talking to you.
The black grit trapped in the oil pan and new filter tells me the clutch disc's are failing fast.

I will duplicate the suggested parts list here when done.


All times are GMT -4. The time now is 09:30 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, 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