2006 Arctic Cat ATVs factory service and repair manual, Page 441Get this manual
Shimming ProcedureIShim Selection
1Press bearings into bores by outer ring to hard contact with seat2Note the following shim selections (shims are nominally 1.5 mml0.060 inthick): APinion Gear Sub-Assemblyadd the value (A) on the gear case housing with 1.5 mm (0.060 in; then subtract the value on the 10-tooth pinion gearThis will give you the proper shim thicknessBInstall the lock collar and tighten to specifications; then on final assembling, stake the lock collar edge approximately 1.5 mm (0.060 in into the lower oil channel
3Prior to final assembling, apply molybdenum disulfide grease to all oil seal lips4Prior to final assembling, prelubricate journal on pinion assembly with SAE SOW-90 hypoid gear lubricant prior to pressing assembly into gear case housingAssembling Pinion Gear