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After applying marking compound to the ring gear, you can see that thepattern is not where it should be. This pattern means we needed to addpinion shims. This is solved by tearing it all apart and adding theshims between the big bearing and the pinion gear. When adding spacersunder the big bearing, include the same thickness spacer washer(s) underthe small bearing to maintain proper bearing preload. When you get thispattern correct, you are ready to install the casing into the rearhousing. Next, replace the axles and the brake assemblies and installthe proper lubricant to complete the job.