Any time you replace the ring or pinion, you need to check the backlash and pinion depth. Only when you are reusing the gear set, you can get away with using the same shims.
Below is the process from the manual on how to set the backlash and pinion depth.
Please run through this material and let us know if you have questions. However, you are going to have to find a special tool set in order to set up the rear to measure this. They are readily available.
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Wednesday, June 2nd, 2021 AT 6:31 PM