G'day Folks,

I'm about to send this old valve body of mine off to someone in need of it and I thought it was worthwhile checking it out for the chap and taking a few pictures of it.

722.1 valve body information is slightly hard to come by with an English language format so I'm going to have a go at naming parts and showing the order of assembly. Apparently it available in WIS, where chapter 27 translated to English, but you have to pay for that.

This information kind of goes hand in hand with information I've put up before about 722.1 transmissions =>

722.118 Automatic transmission rebuild (Monster DIY)

But as that's only fitted to diesel non turbo OM617s it doesn't have the scope valve body wise that this thread might.

I hope this information helps

Ask questions if you must - but remember I'm just some bloke who likes to pull stuff to pieces and take (dirty) pictures of the insides! I'm also someone with a copy of the German FSM (that has chapter 27 on the CD) which helps me put it all back together again...



Part number for this valve body is 116 270 25 07 - I know this goes in a 722.112 it might go in other transmissions - I'll see if I can find out which other ones (if it is indeed used in others)



You'll find that 10 bolts are the same length



And two are longer - these go in the holes of the rectangular cover / part with the flat head screw in it





This shows the future recipient of the valve body the muck that was within - not too bad considering it is about 35 years old.

Attached Thumbnails

         

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I'm in no hurry with this thread - so don't expect great developments just yet

Preparation =>

Original German names for the parts and my dodgy translation



EDIT added a copy of the ATSG translation

Attached Thumbnails

     

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

You are awesome! Thanks a ton for all the information regarding the 722.112. And of course, for the valve body. Your work will not go unnoticed! I'm getting pretty curious as to what is inside my own valve body that is causing it to act up. I was leaning towards a shredded separator plate, ah well we'll know sooner or later.

Could you share your secret into cleaning these things? It doesn't smell like ATF or Brake Cleaner. The unit smells a bit like petroleum.

It was brake cleaner.

Motip in a big box


(on special!)




I should be able to crack on with the rest of this thread soon (when things quieten down here a bit). I could just post up the pictures but I plan to label everything so it is all a bit clearer.

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Hmm interesting! I would've sworn it was something else. Ah well... you're the one who pulled it apart

Here are pictures of the valve body coming apart









Zoomed in views of the valves in the upper section "B" to follow.

I have no information regarding what each of these valves do just yet - I'm working on that!

Attached Thumbnails

       

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

The 116 270 25 07 VB is only for a 722.112.

Great stuff - thanks for that

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Continuation from this picture



Zoomed in pictures are =>





And these bits go on top of the upper intermediate plate



Then between upper intermediate plate and middle part of the valve body





All found as I pulled it apart. Places for parts in the castings will be shown in a bit.

Attached Thumbnails

         

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Taking out the valves is a bit tricky - don't let them fly across the room!







Zoom in on right hand side of the picture above



And zoom in of left hand side...



And for the lower section we have



Next posts will be of the positions in the castings - final assembly (after cleaning etc)

Attached Thumbnails

         

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Some valuable info here! Any idea what the 'Regelschieber wandleranpassung' is? I was only able to find it in an exploded view of the 722.3 valve body. According to the FSM, this is the valve that's causing my gearbox to misbehave. As in: hard shifts.

I've just found my copy of the ATSG 722.1 manual that has a whole load of additional information. I'll look through it for you this evening. It has all of the shift valve information that I haven't labeled so far. So there must be something there that'll help. (Again to be continued)

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Ok, got the chance to pull the valve body out of my car this weekend. Apart from the "transmission-fluid-everywhere-issue", it was a pretty straight forward job. Especially if you follow the FSM and use the 'special' pin that holds the control pressure valve back when re-installing.

Unfortunately, the valve body provided by Stretch had some differences to the point that I wouldn't be able to install it in my transmission. His is an early 722.112 valve body, mine a later one with the plastic holder for the brake bands.

So... no guts no glory. I took my valve body to bits to see its condition, only to realize it to be petty damn good. Everything was spotless clean, no black stuff anywhere. Which of course is a good thing, but doesn't explain the rough shifting. That was untill we got to the mother of all valves. The big one at the upper valve body (with the three screws and three springs).

The short spring was broken in three pieces and therefor of course not giving any resistance to the hydraulic pressure. Everytime this thing shifted, it applied the full 6 bars of oil pressure in a heartbeat. Not good.



So... (sorry Stretch) I went ahead and unscrewed the plate on the 'spare' valve body to find a spring that was intact. Swapped them over. Closed everthing up with new gaskets and bolted it back in the transmission, new filter and fluid, started the car and went for a testrun.

Gear shifts are a bit later now (despite the linkage being correct) (37 / 67 kph), but are much, much smoother. A little bit of fiddling with the modulator should fix that and all should be good.

Went to the dealer to order a new spring and gasket... guess what? €2,17! Compare the cost of that to the €2000,- quote I got from a transmission-builder.

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Typical!

Did you take any pictures of this?

That's exactly what I would have done - I'm glad it worked out for you.

I had a sneaky feeling it would have been that big bugger from the description you sent - I could have covered myself with glory there - missed opportunity!

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!