Leak! I don't know what this is

[jcd9730]

I have a 200r4 and I discovered this is leaking on it, pretty rapidly. You can see the fluid in the picture. What is this, and what should I do?

[jcd9730]

Servo cover I think?

[GASoline71]

Looks like it leaking around a billet Servo in that 200-4R.

Gary

[jcd9730]

How do I fix it?

[hamjet]

It looks recently rebuilt? Thats the servo cover, best bet is to take it to a trans place and have them check it out, or if you had someone rebuild it take it back to them.

[jcd9730]

Yeah, it's only 1.5 years old. My warranty was only for a year, so if it's fairly straightforward I'd rather do it myself for cheap

[mechanicalman]

Originally Posted by jcd9730

How do I fix it?

Get a new servo cover o-ring, depress the cover and remove the snap ring holding it in then remove the cover and servo assembly. A long pry-bar will suffice to depress the cover, and pop the snap ring out.

The snap ring might be the most difficult part, maybe have a friend hold the pry bar so you can use both hands. The reason is that it's easy to scratch things up when trying to get behind the snap ring. Sometimes there will be an access hole on the side of the case to be able to push the snap ring inward but not all the time.

Look for scratches or gouges on the o-ring sealing surface and tapered area then polish if necessary. Deep gouges will require epoxy fill-in then polish flush.

Get some trans assembly lube or Vaseline and lube the trans case for the o-ring to slide in. Put the assembly lube/Vaseline on the servo seals themselves to keep them from falling out on re-assembly.

Put the new o-ring on the cover carefully as to not scratch the o-ring sealing surface, and if it's already scratched, repair or replace as necessary. Install the servo assembly (make sure the pin goes all the way into the band, it should feel springy as the band springs outward) then the cover and depress to install the wire clip. Test-install without an o-ring on the cover first, the cover should be able to depress about an 1/8" or so below the clip before and after. If it does not depress the same going in as it did going out something is amiss like maybe the servo pin might not be all the way in the band.

Your servo may not be identical to the one in the picture, not sure if it will have a spacer or not. Just put it together the way it came apart and it will work the same as it does now.

Put the new o-ring on the cover, install the servo assembly then the cover and depress to install the wire clip.

Included is a picture of "scarf cut seals" (not a servo just typical scarf cut seals). This is how they should look on the tapered parts when installed correctly, with the angle setting against the other angle.

Do NOT lay a flat side against an angle on the scarf cut seals.

[jcd9730]

Hmm that doesn't sound too bad. The snap ring may be hard, it's a very tight fit up there. I think I'll try and if I end up not having time I'll take it to a shop. Thanks for the help!

[EARNHARDT#3]

Originally Posted by jcd9730

Yeah, it's only 1.5 years old. My warranty was only for a year, so if it's fairly straightforward I'd rather do it myself for cheap

You never know, since it's nothing major they may throw a new oring in it for you free of charge.

[kwmech]

Somewhere around the edge there may be a hole to push a punch into to start the snap ring removal. Push the puc in a little then push a punch into the hole then get a small screwdriver under the snap ring and wiggle out.