722.358 - Page 2 - PeachParts Mercedes-Benz Forum

Stretch · #1 01-13-2012, 04:39 AM

Quote:

Originally Posted by 04 Diesel

Ok, I need some help here. What would be my next step? Can I start to take the tail end apart? What needs to be replaced? Should I replace the K1 piston? What else needs to be replaced besides the friction discs and the seals? How about the valve body? Do I need to take the valve body out before I go any further?

Follow the process in the manual.

Basically all of the side bits - brake band actuators need to come out - input selector shaft and modulating pressure linkage / Bowden cable part - vacuum dashpot, reverse light switches, kick down solenoid etc

Valve body needs to be removed

Tail cone off...

...and gear set out - I'm not sure how the 722.3 is put together so look through the manual to be sure.

rs899 · #2 01-13-2012, 08:14 AM

Army is too modest to admit it, but he wrote an absolutely brilliant step-by-step rebuild of his 722.1:

722.118 Automatic transmission rebuild (Monster DIY)

Yours is a 722.3 which is very similar (I have done one, years ago). You can get an idea from Army's ordeal of what you need to do, but for the specifics you need to work from the 722.3 manual for tolerances, order of attack, etc...

04 Diesel · #3 01-13-2012, 12:28 AM

Ok, did some more reading tonight. Rebuild is basically change all friction discs and all new seals. ??

Stretch · #4 01-13-2012, 04:35 AM

Quote:

Originally Posted by 04 Diesel

Ok, did some more reading tonight. Rebuild is basically change all friction discs and all new seals. ??

Rebuild is basically

Cleaning

Checking for wear / measuring for wear

Replacing friction components - clutches and brake bands

Checking bearings

Rebuilding with correct gear set clearances

Replacing seals

(and not necessarily in that order!)

04 Diesel · #5 01-13-2012, 04:41 PM

Im going to turn the tranny upside down and remove the valve body, Im worried about looseing any of the small balls. How can I remove the valve body without dropping any of the balls?

rs899 · #6 01-13-2012, 07:20 PM

You are treading on very dangerous ground.

Do not rely on the memory of a couple of old farts.

This is the time to follow the manual that you have admitted you have.

I can tell you that the VB on my bench has 18 or 19 balls- I am not sure which is correct. There is a very definite way of removing the screws, flipping it over and splitting it, but I don't remember exactly. I made the mistake it appears you are about to make. The manual has this info. It pays to take pictures and do this inside a box, naturally.

EDIT: Sorry, rereading this I see you just want to remove the VB from the case. That's going to be OK- the balls will not fall out unless/until you decide to split the VB. Still, the caution remains- read the manual. I don't remember exactly the drill

04 Diesel · #7 01-13-2012, 10:13 PM

This thing is a mess! Look how dirty it is, chunks of I guess friction discs. Look at the pan!

berryrice · #8 01-14-2012, 10:19 AM

04Diesel, do you know the history of your spare tranny? Mileage? Shifting issues? That old fluid looks really bad...especially the pan. I'm sure those metal clutch bands took a beating with that dark fluid. Makes me wonder what other parts got damaged. Thanks for posting all the great photos and keep it up!

04 Diesel · #9 01-14-2012, 10:31 AM

Quote:

Originally Posted by berryrice

04Diesel, do you know the history of your spare tranny? Mileage? Shifting issues? That old fluid looks really bad...especially the pan. I'm sure those metal clutch bands took a beating with that dark fluid. Makes me wonder what other parts got damaged. Thanks for posting all the great photos and keep it up!

The guy I got it from bought it for scrap, the car had 140,000 miles on it, my guess the owner sold it because the tranny went out. Im going to take it all apart and rebuild the whole thing. Ill keep up with pictures.

MBZ123 · #10 05-27-2013, 04:22 PM

Quote:

Originally Posted by 04 Diesel

Im going to take it all apart and rebuild the whole thing. Ill keep up with pictures.

Inquiring minds?

We're gonnna hold you to that anyways buddie...

MBZ123

Stretch · #11 05-27-2013, 04:49 PM

Since contributing to this thread I've taken a 722.303 to bits =>

722.303 in bits photo shoot

Some of it might be of interest (just in case you have seen it)

MBZ123 · #12 05-28-2013, 11:52 PM

Quote:

Originally Posted by Stretch

Since contributing to this thread I've taken a 722.303 to bits =>

722.303 in bits photo shoot

Some of it might be of interest (just in case you have seen it)

^^^Oh ya, seen that epic already. In fact, took me a whole week to go through that monster the first time! All I can say is you get an A+++ AND the gold star mister.

Thanks for posting that Stretch. There's still many unaware who will no doubt benefit from such an excellent resource.

MBZ123

Stretch · #13 05-29-2013, 01:15 AM

Quote:

Originally Posted by MBZ123

... took me a whole week to go through that monster the first time! ...

A week? You should learn to speed read - I do babble on!