Unfortunately the problem does not seem to be surface simple. I am going to keep studying the parts manual. For a Given throttle position Trans set up for X amount of torque, but Now You are putting X times say 2 amount of torque through it--Of Course its gonna slip--Be summit Wrong if it Didnt! He also likes the cars, which means a lot too. These may be colored differently than the others. I was testing the main pressure on the tranny quite high mind you and whenever I touched the brake while sitting in park, it would flucutate.
I may have found the problem. The fluid was red, the tranny filter was clean, it had never been opened in its life. My car has the 2nd gear startout however I've never been able to just barely touch the throttle and ease off in 2nd gear. That leaves me right here. No flecks in the pan, no chunks, no metal, nothing.
So my 2-3 flare is fixed from the valve body work and the rest of the flares are now gone Atleast now I am comfortable with all the trinkets inside the 722. I suppose this is preferable because it would give me time to do thorough research. Its diameter on the main body is much larger than the earlier 722. I went over to the bench and started tearing down the valve body. Dropped the pan and had a good look. If you have any questions, please call us at 818 782 2300 or E mail: sunvalleymercedes gmail. Remove 12mm hex screw cover.
So down the road, I will give him a visit! Changed nothing was worth a try. I spoke to the technicians at the dealer about this and they admitted that they had never encountered this. Its between that is the problem. It was a hydraulically operated non-lockup four speed automatic that replaced the similarly designed 722. He said he can rebuild with kevlar friction disc and new internals from another trans model which will allow the room for more packs.
You may need to build up a specific trans with more clutch-plates per pack to do it properly, Say a donor from a V8 powered car. You have to have a special tool to install a new seal on the B3 piston, but I'll show you how to do it with a 3 liter soda bottle if you get that far. Nothing horrible but I can tell its been disliking this problem. The clearance can be measured and if the band is not worn too greatly, adjustments can be made for compensation by installing longer thrust pins. This is not a good week for this heh. Unsourced material may be challenged and. He has a very good reputation.
The modulator is all good. I would also like to change my first gear to that out of a newer model. The work should, if possible, be carried out on a plastic surface. Thank You At Waterloo Transmissions our teams at our shops in Akron, Canton, and Dover are dedicated to your complete satisfaction. This manual covers the procedures necessary to overhaul and repair both of these units.
If anyone has any questions or needs manuals, just let me know. Dad is a good transmission guy but he has never been into a benz tranny before. If it continues to act weird, I am going to have to hook up a gauge to the modulator pressure boss on the tranny and put a gauge in the passenger compartment. Also, I have not done anything to modify engine yet so there is no need for a transmission with increased torque load. This manual includes both the original manufacturers information along with some of the engineering changes and updates. Alastair, Oveah heah, The 722. The part number 126 270 44 77 can be used at a Mercedes-Benz dealer for ordering a replacement kit.
December 2017 Mercedes 4G-Tronic Transmission Overview Manufacturer Production 1981—1996 Body and chassis 4-speed Chronology Predecessor Successor 722. This kit comes with a new piston and seal. Apparently it provides better performance off of the line. So my question for you guys and gals is, do you think my hypothesis of the main pressure being low is an accurate one? Fortunately, I was able to retrieve it with needle nose pliers. I didn't see any pieces. Here you can see the rating for the different transmissions: I could use any and all information on this.
Refer to our vacuum system repair and diagnosis page at: The two adjustments on your transmission are the throttle pressure shift timing and vacuum modulator quality of shift. I'm looking for the same info! Well, I'm far from an expert, but I do understand the basic theory in auto transmissions. Unfortunately I can find little info. Many years ago, I uprated an old Borg-Warner 35 transmission--with that, it was really quite easy, you remove a spacer from the clutches and add more clutch-plates, in each of the two clutches! Hi sorry I didn't start a new thread but I am having very similar flaring problems with same 722. I think the differences in my manual for g-wagon and mine just shows a spring where there isn't one in my setup. After disassembly, all parts must be washed and blown out with compressed air.
This tranny is virgin other than the filter change I did so it has no upgraded B2 piston or K1 spring. Also checked the coolant bottel. So 3mm plates are available, and if ours came with 5mm stock, a little swapping should be possible. I am going to have to hook up a gauge to the ports on the tranny and see what is going on. That last picture is for those of you who think I am a jerk after reading this post.