Mercury BRAVO Service Manual page 255

SERVICE MANUAL NUMBER 28
16. If preload is incorrect, adjust by adding or subtracting shims from upper tapered roller
17. Check pinion height.
90-863160 MAY 2000
bearing cup. Reinstall clamp plate and recheck preload (3-5 lb-in. [0.3-0.6 Nm]). Record
final preload.
a. Rotate drive shaft several times to seat bearings. Insert shimming tool into gear
housing.
b. Measure clearance between tool and pinion gear using feeler gauge and shimming
tool. Clearance must be .025 in. (.635 mm). Take measurement at 3 locations on pin-
ion gear (120° apart).
a - Shimming Tool (P/N 91-96512)
b - Feeler Gauge
c. If clearance is less than specified: Add appropriate thickness of shim(s) under lower
tapered roller bearing cup.
Any thickness added here must be subtracted from shim thickness at upper
bearing.
If clearance is more than specified: Remove appropriate thickness of shim(s) from
under lower tapered roller bearing cup.
Any thickness subtracted here must be added to shim thickness at upper
bearing.
a - Shims, Lower
b - Bearing Cup, Lower
c - Shims, Upper
d - Spacer
e - O-Ring
d. Recheck clearance after changing shim(s), (Step b., above).
b
a
e
c
b
a
BRAVO TWO GEAR HOUSING
d
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