Repair manual 722,5 transmission

[spit64]

Is there a repair manual for Mercedes 722,5 transmission out there to buy that is better explained than ATSG manual which I already have? I have never worked with a automatic transmission before and if anybody have some expertise tips for me I am grateful for that. The car is E320 1994 with 800,000 miles on it and I lost the famous reverse but when I dropped the pan the oil is like new and no other signs of failure I believe the lip-seals is bad.

Another problem is when I come to a stop sign and completely stop the car for a second and then hit the throttle the gears slam in very hard, if I stay for couple more seconds there is no problem the transmission shifts fine. Is anybody now which part I need to look in to find the problem for that.
I am going for a complete overhaul with friction disk and sealings, other parts I only change if there is signs of wear.

[ps2cho]

You should have a 722.3 in that car?

[spit64]

Originally Posted by ps2cho

You should have a 722.3 in that car?

No the car is a german import with 5 speed 722,5

[97 SL320]

ATSG ( Automatic Transmission Service Group ) manuals are used by Trans repair shops, they make good manuals by bringing factory information and some real world fixes together.

However, it isn't a how to manual for a person that hasn't built a auto trans before, there is a certain amount of assumed knowledge. This trans probably isn't one you want to learn on, a 3 speed Chrysler Torque flight , or Ford C4 / C6 would be a better choice. If you do take it apart and bail out, don't even think about taking the pile of parts to a shop and expect them to fix it. Sifting through a jumbled pile of parts takes a lot of time.

Look in the manual for a apply chart, see if any clutch / band elements are used in other gears, if the other gears work, you likely have a valve body problem.

Is this a electronic or hydraulic shift trans?

Did reverse suddenly stop working or was it a slow decline?

[spit64]

Originally Posted by 97 SL320

ATSG ( Automatic Transmission Service Group ) manuals are used by Trans repair shops, they make good manuals by bringing factory information and some real world fixes together.

However, it isn't a how to manual for a person that hasn't built a auto trans before, there is a certain amount of assumed knowledge. This trans probably isn't one you want to learn on, a 3 speed Chrysler Torque flight , or Ford C4 / C6 would be a better choice. If you do take it apart and bail out, don't even think about taking the pile of parts to a shop and expect them to fix it. Sifting through a jumbled pile of parts takes a lot of time.

Look in the manual for a apply chart, see if any clutch / band elements are used in other gears, if the other gears work, you likely have a valve body problem.

Is this a electronic or hydraulic shift trans?

Did reverse suddenly stop working or was it a slow decline?

Slowly decline a few years back it started but I had some Omega 917 for dry sealing in the transmission and the transmission have worked fine until now when it gradually get worse. The only electric in the transmission is the 5 speed it is controlled by electric switch. Problem with only reverse the rest gears working fine. B3 brake is only used with reverse no other gears so it could be the B3 sealing.

[MAVA]

Mr Split,

The manuals out there are crap compared to 722.6, 722.3-722.1(and parts too..) The 722.5 is "Bald-Headed Step Child that could not play with the other 722's..."

I'm about to rebuild my 722.5 starting this week. I lost reverse, and I drove my 96 S320 for about 1year with no reverse, but when I got the car in 2006 reverse was fine, and one warm day, BANG!!! backing-out of a parking stall loaded with four people; I had no reverse. I have my transmission out, and slightly dissembled.I can concur that I lost gear as the result of the B3 clutch pack not working(not pressurizing). Mine has this exact same problem as in this post:

no reverse / jerks in reverse when cold - Benzworld.org - Mercedes-Benz Discussion Forum

See post 15-the picture of the torn oring which in the center of the B3 in the same picture. This $5 dollar oring is the result of no reverse, the transmission needs to be dropped, torque converter removed, main pump removed, and the B3 is behind the pump. The slamming into gear. I got that a few times like every four months. take a look at post 26-the Master PDF attachment-that is another repair manual for 722.5. Take a look at all the other attachments. I will do a full rebuild on mine, and I'm going to use three sources: ATSG Manual, The Mitchell Manual(see master.pdf), and very good DIY of a 722.1 on this site :

722.118 Automatic transmission rebuild (Monster DIY)

I ordered my rebuild kit(it was $320) from Dacco Transmissions

DACCO Transmission Parts | America's Largest Remanufacturer of Torque Converters

The service diagram is top notch with part numbers:

Automatic Transmission Parts Catalog - DACCO, Inc.

I'm going to change all the soft parts, clutches, torque converter(its only 200 bucks), most of the bearings(roller and bushing), and maybe the planets. Rebuild that valve-body too..

My oil was always gray.It never stayed nice and red, and I was changing it every year(15 to 20kmiles).

I used this process to remove my trany:

Transmission removal -M104_S320 - Benzworld.org - Mercedes-Benz Discussion Forum

To get to the B3 Clutch you need to make a tool. I followed this:

722.5 transmission oil pump rebuid DIY - Benzworld.org - Mercedes-Benz Discussion Forum

I will photograph and video my process, but I will not not post on any site until I'm done, or else it will take a long time. I want to do it while the parts are fresh in my head.

Let me know if you need something?

Best of luck,

Martin

[spit64]

Thanks Martin for the information I have bought the spring compressor tools for the clutch pack and brake band also. There is some measurement tools for the brake band clearance and overdrive unit in the back of transmission that I thinking I might need.