93 SL500, 95 SL320, 96 S320, 98 S500, 2002 E320 4Matic Wagon & A little 91 5.0 FORD Mustang
I'm looking for as many resources I can find for the 722.3 4 speed automatic. I am most likely going to attempt the R & I, and rebuild on my own. I found a nice write up on a 500e website. This is for a 95 so the procedure should be the same if not identical on the 96.
HOW-TO: Removing & Replacing 722.3 transmission (W124/M104)
Does anyone have any tips / experience to share? I currently have the Mitchell and Ganzeboom documents for the 722.3. I believe there are a few manuals out there.. is the hard copy worth it or does the cd-rom have good information? Also, what specialty tools are needed for removing / installing things like washers etc internally? Where can hard to find parts be found?
The reason for the rebuild is the car slipping gears, revving without shifting, overall degradation of movement. Motor holds speed normally.. transmission has been diagnosed faulty by a local shop. Rebuild quotes are more than the car is worth. How to tell if the problem is not the differential or torque converter?
I would rather not pay a fortune to have someone do the job for me if there is potential to diy and save for a set of monoblocks / tires / lottery tickets / etc. Snap ring pliers? Micrometers? etc.. again all feedback is appreciated.
I guess I need to answer this? I just been remodeling my Kitchen.... Here is my delayed response.
A) Address you have the correct transmission. One does not want to buy parts for 722.4 or 722.5, so on the passenger side of the rim of transmission where the transmission pan butt's-up will give you the correct model number!!!- see the picture-
B) the service manual. It is out there. The 722.3 and 722.4 are near identical, but one can use it for a 722.5 up until the tail-cone clutch packs.
www.bayhas.com - /w140manu/Service/
http://www.jpat.co.uk/59 Mercedes 1B 722.3 722.4.pdf
C) The best tool for the money to do any tranny rebuild. Worth it's price in gold. The hot rod places charge TEN_TIMES more!!!:eek I paid $45 :eek Now they are twenty something :eek
Universal Automatic Transmission Clutch Spring Compressor Tool US Shipping | eBay
D) these 722.3-722.5 have lip seal o-rings through-out the transmission inside. They are tricky to install( this is why I say the 722.6 is the best transmission to DIY the first time as the 722.6 DOES NOT HAVE ANY LIP SEALS). Here is tool which works well:
It comes with every TransTech rebuild kit. Trans tech kits were sold by RockAuto, but one can make the tool from plastic from a plastics shop. Just sand the round sharp edges after one cuts it out :nerd
E) I would advise to look at YouTube rebuild videos. My favorite guy is Hiram Gutierrez
Look at his rear wheel drive rebuilds like Chevy 4L60 He has dozens of those. Look at how bearing bushings are removed. The 4L60 has like 10 or so bushings. The 722.3 has one or two... Comb through his videos try to look at them while you are eating. Spend 20 to 40hrs looking at them in the back ground, so you get the procedures. Watch the lip seal process. He has 722.9, but it will not help as it does not have lip seals. The chevy trans comes close to a 722.3-722.5 rebuild with lip seals.
F) tools, Feeler gauge(large one-not a spark wire gap tool), pic's, punch, screw drivers, denatured alcohol(or Acetone), swabs(to clean screw pockets), High heat high vibration thread locker-not your garden variety thread locker from the auto parts store. Torque wrench. Vernier Caliper
Feeler Gauge - 32 Piece, SAE/Metric
Digital Calipers - Save on these 6 Inch Digital Calipers
4 Piece Pick and Hook Set
5 Piece Long Drive Pin Punch Set
3/8 in. Drive Click Type Torque Wrench
1/2" Torque Wrench
This is worth its price in gold for the home DIYer's
450 lb. Low Lift Transmission Jack
You will need a tub of sticky transmission lube. DONOT USE ANY WHEEL BEARING GREASE OR CHASSIS GREASE ORRRRRR ANY OTHER GREASE as these greases will DESTROY YOUR SEALS.... I use the blue Grease. You can get it on fleabay too...
More stuff later
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