Mercury BRAVO Service Manual page 259

SERVICE MANUAL NUMBER 28
25. Install bearing carrier and tab washer in gear housing.
26. Lubricate threads on bearing carrier retaining nut with Quicksilver Special Lubricant
27. To determine overall gear case preload, add drive shaft bearing preload (previously
IMPORTANT: The overall preload includes both the drive shaft preload and the gear
case preload.
New Propeller Shaft Bearings
Used Propeller Shaft Bearings
Drive Shaft Bearings
1
Bearing is considered used if spun under load even once ("under load" meaning: with power applied).
2
Plus drive shaft preload of 3-5 lb-in. (.3-.6 Nm)
Example:
. . . . . . . . . . . .
. . . . . . . . . . . .
90-863160 MAY 2000
101. Install and tighten bearing carrier retainer nut until resistance to propeller shaft
rotation can be felt (to preload bearings).
c - Tab Washer – V-Notch In Recess In Carrier
d - Bearing Carrier
e - Bearing Carrier Retainer Nut
recorded) to propeller shaft bearing preload as outlined in the example below.
Drive Shaft Preload
New Bearing Preload
Preloads
8-12 lb-in. (.9-1.4 Nm)
1
5-8 lb-in. (.6-.9 Nm)
3-5 lb-in. (.3-.5 Nm)
3 lb-in. (.3 Nm)
+
8 lb-in. (.9
11 lb-in. (1.2 Nm)
BRAVO TWO GEAR HOUSING
c
d
e
2
2
Nm)
Page 3C-39