62Y3A11 6-3612345678IShimmingNOTE:• Shimming is not required when assemblingthe original lower case and inner parts.• Shimming is required when assembling theoriginal inner parts and a new lower case.• Shimming is required when replacing theinner parts.Selecting the pinion shims1. Install the drive shaft and drive shaftbearing 1 to the shimming tools.NOTE:• Select the shim thickness (T3) by using thespecified measurement(s) and the calcula-tion formula.• Install the shimming tool to the drive shaftso that the shaft is at the center of the hole.• Tighten the wing nuts another 1/4 turn afterthey contact the fixing plate 2.2. Install the pinion and pinion nut, and thentighten the nut to the specified torque.3. Measure the distance (M) between theshimming tool and the pinion as shown.NOTE:Measure the pinion at three points to find theclearance average.4. Calculate the pinion shim thickness (T3)as shown in the examples below.NOTE:“P” is the deviation of the lower case dimen-sion from standard. The “P” mark a isstamped on the trim tab mounting surface ofthe lower case in 0.01 mm units. If the “P”mark is unreadable, assume that “P” is zeroand check the backlash when the unit isassembled.Pinion height gauge 3: 90890-06702Pinion nut: 75 N·m (7.5 kgf·m, 54 ft·lb)Digital caliper 4: 90890-06704Pinion shim thickness (T3) =M – 11.30 mm – P/100Shimming (F50A) (for worldwide)
