Mercury 45 Jet 50-55 - Lower Unit

6B-0 - LOWER UNIT 90-817643R1 DECEMBER 1996
Table of Contents
Page Page
Notes 6B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing (Drive Shaft) 6B-2. . . . . . . . . . . . . . . .
Gear Housing (Propeller Shaft) 6B-6. . . . . . . . . . . .
Special Tools 6B-8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6B-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller Removal 6B-8. . . . . . . . . . . . . . . . . . . . .
Draining and Inspecting Gear Housing
Lubricant 6B-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Pump 6B-10. . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier and Propeller Shaft 6B-11. . . . .
Pinion Gear, Drive Shaft, and Forward
Gear 6B-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upper Drive Shaft Bearing 6B-15. . . . . . . . . . . . .
Oil Sleeve 6B-16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Lower Drive Shaft Bearing Race 6B-16. . . . . . . .
Shift Shaft 6B-17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Forward Gear Bearing Race 6B-18. . . . . . . . . . .
Trim Tab Adjustment and Replacement 6B-18. .
Reassembly 6B-18. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forward Gear Bearing Race 6B-18. . . . . . . . . . .
Shift Shaft 6B-18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier Reassembly 6B-19. . . . . . . . . . .
Forward Gear Reassembly 6B-21. . . . . . . . . . . .
Propeller Shaft Reassembly 6B-22. . . . . . . . . . . .
Drive Shaft Wear Sleeve Installation 6B-22. . . .
Lower Drive Shaft Bearing Race
Installation 6B-23. . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Sleeve Installation 6B-24. . . . . . . . . . . . . . . . .
Upper Drive Shaft Bearing Installation 6B-24. . .
Forward Gear, Lower Drive Shaft Bearing,
Pinion Gear, and Drive Shaft
Installation 6B-25. . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Gear Depth and Forward Gear
Backlash 6B-25. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Determining Pinion Gear Depth 6B-25. . . . . .
Determining Forward Gear Backlash 6B-27.
Bearing Carrier and Propeller Shaft
Installation 6B-28. . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Pump Reassembly and
Installation 6B-29. . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing Pressure Test 6B-31. . . . . . . . . . .
Filling Gear Housing With Lubricant 6B-31. . . . . . .
Propeller Installation 6B-32. . . . . . . . . . . . . . . . . . . . .
Gearcase Installation 6B-33. . . . . . . . . . . . . . . . . . . .
Trim Tab Adjustment 6B-34. . . . . . . . . . . . . . . . . .