1988 Johnson Evinrude CC 60 thru 75 outboards Service Manual, Page 228Get this manual
Driveshaft Shimming Using Tool PI 320739 The driveshaft pinion is precisely meshed with the forward and reverse gears by the use of shim or shims between the driveshaft bearing housing and thrust washerWhen installing new thrust bearing or washer, bearing housing, pinion or driveshaft, it is necessary to gauge and select the proper shims to restore factory clearance INote
Degrease pinion and driveshaft tapers prior to assembly
1Clean the driveshaft and pinion in clean solvent and dry thoroughlyAssemble the pinion to the driveshaft and tighten the pinion nut to torque of 40-45 ftIbs(54-60 Nm)2Place OMC Pinion Shim Gauge PIN 315767 in vise, as shown
13713Select 0.020 in(0,508 mm) of driveshaft shimsClean
the shims in solvent and dry thoroughlyCarefully measure shims using micrometerPosition the shims between the driveshaft and shim gauge, as shown1 37 4'-
Measure the clearance between the top of the shim gauge and the pinion using feeler gaugewhile pressing down on the driveshaft
5To obtain correct shim measurement, subtract the measurement obtained with the feeler gauge from the total measurement of shims between the driveshaft and shim gaugeUse amount of shims to give zero clearance6Carefully set aside the correct shim selectedRemove the nut and the pinion from the driveshaftCheck all shims with micrometer before installingDriveshaft Shimming Using Tool PI 393185 The driveshaft pinion is precisely meshed with the forward and reverse gears by the use of shim or shims between the driveshaft bearing housing and thrust washerWhen installing new thrust bearing or washer, bearing housing, pinion, or driveshaft, it is necessary to gauge and select the proper shims to restore factory clearanceGauge bars are precision made and should be handled carefullyThe length of each gauge is stamped near the part number, and this dimension can be used to measure the gauge to confirm accuracyThis dimension is .020 in(0,508 mm) shorter than the actual shimmed length of the driveshaft