Questions for a transmission person... - PeachParts Mercedes-Benz Forum

tenknots · #1 03-02-2006, 08:16 PM

I got the Superior shift kit today for my 300D - really just a bunch of springs. The instructions say to remove the valve body. What does that entail? I'd like to be at least somewhat prepared for when I go in there. It all has to be done with the car on ramps - in the cold.

The kits says it addresses hard 1-2 shifts and has 2 settings each - depending on springs used - for firming up 2-3 and 3-4 shifts. Acording to the instructions, the K-2 is for the 3-4 shift.

There is also a fairly complete adjustment section and the kit includes a T to measure the vacuum.

I can't wait to try it, hopefully this weekend.

Any advice is appreciated!

Diesel Giant · #2 03-02-2006, 08:24 PM

Yes it must be done on ramps or jack stands. Please be careful with the valve body. That is the brain of the tranny and MUST be kept hospital clean. Do not use cotton rags to clean any internal part of the tranny. They leave an increadible amount of lint and will clog it up. Use paper towels to do any wiping, but still be careful.

tenknots · #3 03-02-2006, 09:00 PM

Thanks DG. What does it take to get the valve body out? Will it be obvious?

I guess dropping it in the sand and leaves is a bad idea...

radioguy · #4 03-02-2006, 09:37 PM

Not sure what's involved in your particular trans, but I just replced the one in my wife's 95 E320 wagon. After you drain and drop the pan and let things drain for a while. The valve body I removed had 15 bolts. 3 were different from the others (so pay attention to which bolt(s) come from where). After all of the bolts were removed, it dropped right down. There are some very small parts in the top of the valve body . The previous post was correct, you need to have a clean environment to work in.

Good Luck,
Todd

83 300SD 353k
85 E320 Wagon 150k

lietuviai · #5 03-02-2006, 09:54 PM

I would recommend you steam clean the bottom of the transmission and surrounding areas before doing the job. As it was mentioned before you must have a clean environment when working on the valve body. I would as highly recommend having some sort of transmission manual to work on the valve body. There are many balls and springs within it as certain bolts that need to be removed when disassembling. I think half the expense, if not more, of a rebuild charged by a shop is related to the valve body.

Pete Burton · #6 03-03-2006, 12:08 AM

Quote:

Originally Posted by radioguy

Not sure what's involved in your particular trans, but I just replced the one in my wife's 95 E320 wagon. After you drain and drop the pan and let things drain for a while. The valve body I removed had 15 bolts. 3 were different from the others (so pay attention to which bolt(s) come from where). After all of the bolts were removed, it dropped right down. There are some very small parts in the top of the valve body . The previous post was correct, you need to have a clean environment to work in.

Good Luck,
Todd

83 300SD 353k
85 E320 Wagon 150k

right, 15 bolts, 3 to the extreme right are longer. Torque to 8 Nm on reassembly - that's roughly 72 in-lb. I had to buy a cheap in-lb torque wrench. Don't even use paper towels if you can help it. The best thing I've found for a cheap, clean portable static free surface is aluminum foil. Biggest sheets you can find, food service type. I'd immediately hold the debolted valve body onto a just unfurled sheet of foil, and wrap it over. Put the pan back on with 2 bolts to keep any sand or snow from blowing in and bring that puppy inside where you have light and heat.

Habanero · #7 03-03-2006, 09:01 AM

If you have a source, l have found medical lap sponges make a great lint-free wiper. My wife (equine surgery resident) gets unused leftovers from work (once the pack is opened, they are no longer sterile and can't be used). They soak up a lot of oil/water/whatever and leave no residue behind.

A google search for lap sponges turns up quite a few supply houses from which they can be purchased.