2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Manual, PN 5005483, Page 192Get this manual
GEARCASE DRIVESHAFT SHIMMING
DRIVESHAFT SHIMMING
IMPORTANT: If new pinion gear is needed, replace gear set before shimming procedurePinion gear backlash is achieved by using shims between the driveshaft bearing housing and the thrust washerWhen installing new thrust bearing or washer, bearing housing, pinion, or driveshaft, it is necessary to properly shim the assembly to restore factory clearanceUse Driveshaft Shimming Tool, PIN 393185Shim gauge bars are precision made and should be handled carefullyThe length of each bar is stamped near the part numberThis dimension is 0.020 in(0.508 mm) shorter than the actual shimmed length of the driveshaft
Select shim gauge bar, PIN 328366, and collar, PIN 328363Slide the collar onto the driveshaft with large end in contact with the bearing housingInsert the assembled driveshaft into the tool base and tighten preload screw against the driveshaft until groove on the spring-loaded plunger is flush with end of threadsTighten locking ring on preload screw
IMPORTANT: Degrease pinion and driveshaft tapers prior to assemblyCheck tapers for any damage or material transferReplace any damaged components before proceedingAssemble the driveshaft bearing housing, thrust washer, thrust bearing, and pinion onto the driveshaftUse Driveshaft Seal Protector, PIN 312403, whenever installing or removing the bearing housingLightly coat the threads of the pinion nut with outboard lubricant and torque to 40 to 45 ftIbs(54 to 60 Nm)123Collar Tool base Groove COA3566 DSC00326