Mercury 15XD User Manual

6
A
GEAR HOUSING
90-826883R2 JUNE 1998 Page 6A-1
LOWER UNIT
Section 6A -- Gear Housing
Table of Contents
Specifications 6A-1. . . . . . . . . . . . . . . . . . . . . . . . . .
Quicksilver Lubricants and Service Aids 6A-2. . .
Special Tools 6A-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing (Drive Shaft) 6A-6. . . . . . . . . . . . . .
Gear Housing (Propeller Shaft) 6A-8. . . . . . . . . . .
General Service Recommendations 6A-10. . . . . . .
Draining and Inspecting Gear Lubricant 6A-11. . . .
Gear Housing Removal 6A-12. . . . . . . . . . . . . . . . .
Disassembly 6A-14. . . . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier 6A-14. . . . . . . . . . . . . . . . . . . . . .
Propeller Shaft 6A-15. . . . . . . . . . . . . . . . . . . . . .
Water Pump 6A-16. . . . . . . . . . . . . . . . . . . . . . . .
Shift Shaft 6A-18. . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft and Pinion Gear 6A-18. . . . . . . . . . .
Upper Drive Shaft and Bearing/Seals 6A-19.. .
Lower Drive Shaft Bearing/Cup 6A-20. . . . . . . .
Forward Gear Race 6A-20. . . . . . . . . . . . . . . . . .
Cleaning and Inspection 6A-21.. . . . . . . . . . . . . . . .
Gear Housing/Bearing Carrier Castings 6A-21.
Ball Bearings 6A-21. . . . . . . . . . . . . . . . . . . . . . . .
Needle Bearing 6A-21. . . . . . . . . . . . . . . . . . . . . .
Cam Follower 6A-22. . . . . . . . . . . . . . . . . . . . . . .
Clutch 6A-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller shaft 6A-22. . . . . . . . . . . . . . . . . . . . . .
Shift Shaft 6A-23. . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse And Forward Gear 6A-23. . . . . . . . . . .
Pinion Gear 6A-25. . . . . . . . . . . . . . . . . . . . . . . . .
Driveshaft 6A-25. . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier 6A-26. . . . . . . . . . . . . . . . . . . . . .
Reassembly 6A-26. . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft Bearing and Seals 6A-26. . . . . . . . .
Shift Shaft 6A-28. . . . . . . . . . . . . . . . . . . . . . . . . .
Forward Gear Installation 6A-29. . . . . . . . . . . . .
Pinion and Driveshaft 6A-31. . . . . . . . . . . . . . . .
Propeller Shaft 6A-31. . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier 6A-33. . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier/Propeller Shaft Installation 6A-34
Water Pump 6A-35. . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing Installation 6A-36. . . . . . . . . . . . .
Trim Tab Adjustment and Replacement 6A-41.
Filling Gear Housing with Lubricant 6A-42. . . . . . .
Specifications
GEAR HOUSING
BIGFOOT
(2.42:1)
Gear Ratio
Gearcase Capacity
Lubricant Type
Forward Gear
Number of Teeth
Pinion Gear
Number of Teeth
Pinion Height
Forward Gear Backlash
Water Pressure (With Thermostat)
@ 950 rpm (Idle)
@ 5000 rpm (WOT)
2.42:1
7.8 fl oz (230 mL)
Quicksilver Gear Lube-Premium Blend
29 Spiral/Bevel
12 Spiral/Bevel
No Adjustment
No Adjustment
1 - 4 psi (7-28 kPa)
6 - 9 psi (41-62 kPa)
NOTE: Before filling gear case, apply 10-12 psi of air pressure at the vent hole.
Pressure should not drop for 5 minutes while alternately applying a 2-3 pound force
to the top of the shift shaft in the fore and aft direction.

Mercury 15XD Specifications

General

Brand	Mercury
Model	15XD
Category	Outboard Motor
Language	English