p.vanderlinden

Help!,

Can anybody out there tell me what torque value I should use on a 78 930 rear hub nut. I am in the middle of a rear wheel bearing instalation RIGHT NOW @ 12:45 pac time Friday 28th and I realized I dont have my manual with me. I know a SC is 254 foot lbs, but that isnt doing it on my Turbo.

Please somebody look it up for me and post it now.

Thanks for your time, Paul

Steve Weiner-Rennsport Systems

Hi Paul:

300-320 Nm is the spec,......221-236 lb-ft on the 20mm axle stub.

p.vanderlinden

Thanks,

I'm guessing Ive got a problem. Bearings were new 2500 mi. (1 year) ago. Seemed OK at that time, now Ive got play. I would guess .015" to .020", i.e. 1/2 mm. Tried re-torqueing to 275 and it didnt help. I may try 325 lbs (as noted in above post) but I need a bigger torque wrench and Im not confidant it will work.

For anybody that is cosidering doing this themselves:

Doing rear wheel bearings on a Turbo is a MFer. I have a full machine shop at my disposal and actually made a special tool to draw the bearing cups to there seats in the aluminum arm (that I have since donated to Vision Motorsports after trying to use there existing home made tool) It took a fair bit of torque just to do that bit (the bearing races). I even heated up the alum. arm and froze the bearing cups and they definitely did not fall into place. Also, it is also difficult to remove the old races in the first place without dinging the alum. arm.

I would advise removing arm, remove half shaft and hub, clean with solvent and give to competent repair shop for bearing race swap.

If anybody has a complete right rear Turbo arm for sale let me know.


Thanks to all who responded, Paul

p.vanderlinden

Oops,

I should mention those figures were foot pounds and the 325 ft lb torque spec is from a pelican response.

Paul