Mercury BRAVO Service Manual page 295

SERVICE MANUAL NUMBER 28
11. Determine shim thickness required for drive shaft bearing preload.
12. Install original thickness shims, spacer and new O-ring.
90-863160 MAY 2000
a. Install upper bearing cup and tab washer. Measure distance between top of gear
housing and tab washer using a 0-1 in. depth micrometer.
a - 0-1 Inch Depth Micrometer
b. Measure thickness of spacer from top machined surface to bottom machined sur-
face using a 0-1 in. outside micrometer.
a - 0-1 Inch Outside Micrometer
b - Spacer
c. Calculate shim thickness as shown.
Measurement from Step "a" minus (–)
Measurement from Step "b" plus (+)
.001 In. (0.025 mm) equals (=)
Shim Thickness Required.
a - Shim(s)
b - Spacer
c - O-Ring
a
a
b
c
b
a
BRAVO THREE GEAR HOUSING
72452
72523
72451
Page 3D-33