5R55E Reverse Servo

[kwinters2]

Hey all quick question about the reverse servo in the 5R55E. I replaced my VB today and in doing so I upgraded the O rings on the reverse servo to the Viton D rings. Installed them and then let the assembly sit in the freezer till I was ready to install. Come install time it was tight and I had to put some serious pressure on the body to get it to go up into the bore.

Does that sound about right? When I first took it apart the "plunger" just fell out. Once I added the D rings it would catch and sit in the bore but would not go in far enough for the cover to go on. Once I applied pressure and gave it a good push with my palm it went in and stayed. Am assuming hydrualic pressure will move it from here on out.

Just want to check on this as I dont want to get this buttoned up and find out I am out reverse.

Cheers and happy pre turkey day!
Kinley

 

[barenfang]

Kwinters - I was hoping you would have received a reply. I had the same issue as you. I replaced the VB and decided to tackle the low reverse servo as well. I had trouble putting the large D-ring on without twisting but I did get the smaller D-ring on the servo. I also put a new large O-ring on the servo. When I pushed it back into the bore it was extremely tight. I wondered like you if the pressure would be enough to move the piston. So I removed the smaller D-ring and replaced with a new O-ring. It was still tight in the bore but not near as tight as the D-rings. I will say that I still have the same issue with reverse engaging fairly slowly.

Since you have not received a response did you hook everything back up? Did you have any problems with your reverse?

 

[kwinters2]

No havent finished the job yet. Just got done messing with adjusting the bands and putting the pan back on. Tomorrow I will finish up the pan and put the fluid in. Will know then how things turned out. I will post up then.

Kinley

 

[barenfang]

Kwinters2 - I just found this link. http://www.explorerforum.com/forums/showthread.php?t=248415
Now this is for a A4LD transmission and ours is a 5R55E but I did not see a spring when I removed the servo piston. Did you? Wondering if that is our problem or the 5R55E did not have a spring?

 

[kwinters2]

The 5R55E does not have a spring in it.

Kinley

 

[kwinters2]

All hooked up

Got it all hooked up and appears no issues. Goes into reverse without a problem. Dare I say, without jinxing myself, shifts and does everything like it is supposed almost like it did when I first got it back in 2005!!!!!

Cheers
Kinley

 

[barenfang]

Kwinters2 - Great news. I guess I will drop my pan again and install the D-rings. Getting really cold around here so I will tackle this in a few months.

I have noticed that since I installed the new VB it actually shifts better through the gears.