1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 212Get this manual
1271 27Carefully apply OMC Gasket Sealing Compound to the O-ring flange and aft support flange of the propeller shaft bearing housing 1281 28
Apply OMC Needle Bearing Assembly Grease to the reverse gear thrust washerPlace the thrust washer in the propeller shaft bearing housing
29Install the propeller shaft bearing housing in the gearcase with screw holes in vertical position and drain slot facing down
r:;;;, 30Apply OMC Nut Lock to threads of the propeller housing
retainer screwsInstall the retainers and tighten the screws to torque of 120-144 in Ibs(14-16 Nm)
1301 31Before installing lubricant, pressure test and vacuum test the gearcase as follows: Remove the oil level plugand screw in pressure-test gauge Pump up pressure to 3-6 psi (21 -42 kPa)If pressure gauge indicates leakage, submerge the gearcase in water to determine source of leakage as evidenced by bubblesIf the gearcase pressure gauge does not indicate leakage, increase pressure to 16-18 psi (110-124 kPa)If pressure does not hold, submerge the gearcase in water and check for source of leakageMake necessary repairs and repeat test Screw in vacuum testerPump outto 3-5 in(76-127 mm) of mercury and see if vacuum IloldsThen, pump out to 15 in(381 mm) of mercury and checkIf the gearcase fails to hold on either test, put oil around suspected sealIf leak then stops or oil is drawn in, that seal is defectiveWhen the gearcase checks OK, refill with the proper lubricantU