Mercury MerCruiser MCM 454 Mag MPI Service Manual page 161

SERVICE MANUAL NUMBER 23
3. Ensure coupling centerlines align by butting propeller shaft coupler against transmis-
NOTE: Some propeller shaft couplers may not have a shoulder on mating face. On these
installations, use a straight edge to check centerline alignment.
IMPORTANT: Remote V-Drive Models: refer to remote V-drive manufacturer's
instructions for drive shaft (between transmission and remote V-drive) alignment.
4. Check for angular misalignment, by hand holding coupling faces tightly together. Check
Index Index
90-861326--1 MARCH 1999
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sion output flange. Shoulder on propeller shaft coupler should engage recess on trans-
mission output flange face with no resistance.
Wrong
for a gap between faces with a .003 in. (0.07 mm) feeler gauge at 90 intervals.
a - Feeler Gauge
b - Transmission Coupling
c - Propeller Shaft
d - Straight Edge
MIE MODELS - VELVET DRIVE TRANSMISSION
Right
a
b
c
d
72597
72598
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