Mercury BRAVO Service Manual page 214

BRAVO ONE GEAR HOUSING
28. To determine overall gear case preload, add propeller 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:
. . . . . . . . . . . .
. . . . . . . . . . . .
29. Tighten the retainer to the proper preload using the following procedure.
Page 3B-42
recorded) to drive shaft bearing preload as outlined in the example below.
Drive Shaft Preload
New Bearing Preload
a. Tighten retainer nut in small increments using retainer wrench.
a - Bearing Carrier Retainer Wrench (91-61069T)
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)
a
SERVICE MANUAL NUMBER 28
2
2
Nm)
90-863160 MAY 2000
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