Turbo wastegate spring reinstall OMG!!! - PeachParts Mercedes-Benz Forum

derherr65 · #1 04-05-2007, 02:36 AM

I'm replacing a blow turbo wastegate diaphragm on my garrett. Disassembly was easy. But I'm at a loss on reassembly. Reaching under the turbo, compressing the 30-40# spring with three fingers at most, and then tring to rotate it while under pressure looks to be about impossible. Any thoughts?

mespe · #2 04-05-2007, 06:54 AM

I've never done it, but maybe tie a string around the spring to compress it, then pull the string out?

good luck

derherr65 · #3 04-05-2007, 11:16 AM

I was thinking the same thing with tie wraps. The tolerances are too tight for tie wraps though. I've got some sturdy nylon line. I'll give that a try.

derherr65 · #4 04-05-2007, 02:53 PM

The string method works to install, but it's problematic to remove. You need some sort of really fancy slip knot to remove the string, or x ray vision and a long tiny knife, or a lighter and lots of caution and parience. I got it done, but pulling the turbo may be easier.

winmutt · #5 04-05-2007, 04:16 PM

It is a PITA. I dunno if there is a secret but the DIY on here was pretty much on spot. You want to get the end of the spring into the groove. I then used 2 small screw driver (eye glasses size) one to hold the end in the groove and the other was then run around the circumference of the spring. Compressing the spring is real easy. When you pull it out laterally the circumference shrinks. Its a fine juggling act of holding with one screw driver, rotating the other to push the spring in all while pulling outwards on the spring to get it in there. Once you get the first 1/4-1/2 of the spring in there the spring will hold it self. Keep rotating with the screw driver and it just pops in there.

Specifically the reason why I HIGHLY suggest getting a voodoo3 or other MBC. Much easier to turn the thing in and out a few turns than dealing with that stupid retaining spring. Also the stock waste gate starts bleeding WAAAAY before you hit max psi. With the MBC I get little or no bleed all the way up to 13psi.

derherr65 · #6 04-05-2007, 05:35 PM

Got my turbo wastegate diaphragm repaired. Thanks everyone for all the help, and especially bgkast!

Youtube videos:
cruising at 60mph - http://www.youtube.com/watch?v=OOOHYYY1LKg
0-60 in the 14s. Gonna have to work on that. - http://www.youtube.com/watch?v=mHtPQi78KNM

DIY - garrett wastegate diaphragm replacement and boost adjustment.
http://www.schumanautomotive.com/forums/showthread.php?p=30668&posted=1#post30668