LOWR6-23 61U5H11Lower unitShimmingNOTE:9 Shimming is not required when assemblingthe original lower case and inner parts.9 Shimming is required when assembling theoriginal inner parts and a new lower case.9 Shimming is required when replacing theinner part(s).Selecting the pinion shim1. Install the special service tools onto thedrive shaft 1.NOTE:9 Select the shim thickness (T3) by using thespecified measurement(s) and the calcula-tion formula.9 Install the special service tools onto thedrive shaft so that the shaft is at the centerof the hole.9 Tighten the wing nuts another 1/4 of a turnafter they contact the fixing plate 2.2. Install the pinion and pinion nut, and thentighten the nut to the specified torque.3. Measure the distance (M4) between thespecial service tool and the pinion asshown.NOTE:9 Measure the pinion at 4 points to find thedistance average.9 Make of note the each measurementnumerical.4. Turn the thrust bearing 5 2 or 3 times toseat the drive shaft housing 6, and thenmeasure the housing height (M3) asshown.NOTE:9 Measure the thrust bearing at 4 points tofind the height average.9 Make of note the each measurementnumerical.T36S3601506S360170M44S60V6640456M36S360160123Pinion height gauge 3:90890-06710Pinion nut:93 N·m (9.3 kgf·m, 68.6 ft·lb)Digital caliper 4: 90890-06704