My Superior Shift Kit thread (W124 300DT) - PeachParts Mercedes-Benz Forum

tangofox007 · #1 09-12-2009, 05:18 PM

Quote:

Originally Posted by okcraig

Tangofox007,

Do I need to pull the valve body back off to do this?

Yes.

okcraig · #2 09-12-2009, 06:33 PM

Quote:

Originally Posted by tangofox007

Yes.

Thanks for the input. Well the good news is I finally got the drain plug out. The allen wrench slot was a bit stripped and I had to work on it a bit. So once its drained I'll pull the pan and then take the valve body down again. I have looked through my books but can't reall find any refrence to doing this. Can you provide any hints? TIA

tangofox007 · #3 09-12-2009, 08:37 PM

The shift plunger on the left, rear side of the valve body has a notch or groove which needs to be engaged (mated) with the shifter mechanism as the valve body is reinstalled. If you didn't do that previously, it is possible that the plunger was damaged as the valve body bolts were tightened. Also make sure that the throttle plunger aligns with the cable bellcrank on the right side. (That usually takes care of itself.)

I recommend that you verify proper shift mechanism operation before reinstalling the pan. (Have a helper move the shifter while you observe from below.)

okcraig · #4 09-12-2009, 08:40 PM

Quote:

Originally Posted by tangofox007

The shift plunger on the left, rear side of the valve body has a notch or groove which needs to be engaged (mated) with the shifter mechanism as the valve body is reinstalled. If you didn't do that previously, it is possible that the plunger was damaged as the valve body bolts were tightened. Also make sure that the throttle plunger aligns with the cable bellcrank on the right side. (That usually takes care of itself.)

I recommend that you verify proper shift mechanism operation before reinstalling the pan. (Have a helper move the shifter while you observe from below.)

Thanks for the info. I have the valve body back off and will see how it looks. Thanks again.

okcraig · #5 09-12-2009, 09:13 PM

Quote:

Originally Posted by okcraig

Thanks for the info. I have the valve body back off and will see how it looks. Thanks again.

OK, I've located the plunger and the shaft part that I think should move it. I've got the body back in place and the plunger does move as you move the gear lever. However, it moves from park to R to D to 3 to 2 to 1 with no problem. But as you move the elector back to P the plunger does not move back. Is this possible becuase there is no pressure against it since the car is not running? TIA

okcraig · #6 09-12-2009, 09:40 PM

Quote:

Originally Posted by okcraig

OK, I've located the plunger and the shaft part that I think should move it. I've got the body back in place and the plunger does move as you move the gear lever. However, it moves from park to R to D to 3 to 2 to 1 with no problem. But as you move the elector back to P the plunger does not move back. Is this possible becuase there is no pressure against it since the car is not running? TIA

OK, put fluid back in and started it up but with the same results. I don't have a good picture of the part that mates up to the shifter part. But it's plastic and has kind of a l shape to the piece that appears to mate with the pin which sticks out of the shifter piece. Its hard to tell if this is broke or not but I'm thinking that this should probably be a U shape so that the pin pulls it in both directions. I don't know if you can buy this piece or not but I'm thinkking it might be better to buy a complete new or rebuilt valve body. I'm probably going to sleep on it tonight and do some more reasearch. Please pass on your thoughts. Us retirees need to stick together. Thanks for your help.

tangofox007 · #7 09-13-2009, 10:00 AM

Quote:

Originally Posted by okcraig

I'm thinking that this should probably be a U shape so that the pin pulls it in both directions.

Yes, the selector valve should be positively engaged in both directions. My recollection is that it is possible to install the selector valve upside down. Or possibly 90 degrees off. Is it possible that that occurred? The valve is indexed by a long groove on the valve and a projection on the retainer plate.