901 Ring Gear Etchings

[lv2race]

Hello,

I was wondering if someone could help me understand the etchings on my 901 Ring Gear. Here is what I have and what I think they mean:

01037 Serial Number that mates with Pinion Gear
0.15 I believe this is backlash
+0.30 This is the etching I'm not sure about. Does anyone know?

Thanks,

Rob

[Jim_Brown]

Rob-

The other number is your pinion depth offset. Read more in this thread:

915 R&P Whine - How do you get rid of (fix) this??

Hopefully you don't need to set pinion depth.

Cheers,
Jim

[lv2race]

Thanks Jim. Actually we just built a tool like Gary Fairbanks built to measure the pinion depth. We're in the process now of trying to decipher the process of measuring the depth from the factory manual.

Rob