1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 317Get this manual
Pinion ShimmingUsing OMC Special Tool PIN 393185 (Pinion Thrust Bearing Universal Shim Gauge) This "Shim Gauge" is used to determine correct driveshaft shimming for proper engagement of the pinion into the forward and reverse gearsThe "Sh im Gauge" consist of base, spring screw, one set of driveshaft adapter collars and one set of shim gauge barsGauge 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 accuracy This dimension is 0,762 mm (0.030) shorter than the actual shimmed length of the driveshaftBefore assembling the pinion to the driveshaft, degrease tapers on both parts1Assemble the driveshaft bearing housingthrust washer thrust bearingand pinion onto the driveshaftTighten the pinion nut to torque of 80-90 Nm (60-65 ftIbs CD ,