Mercury MerCruiser MCM 454 Mag MPI Service Manual page 188

MIE MODELS - HURTH TRANSMISSION
3. Ensure coupling centerlines align by butting propeller shaft coupler against transmis-
sion output flange. Shoulder on propeller shaft coupler should engage recess on trans-
mission output flange face with no resistance.
NOTE: Some propeller shaft couplers may not have a shoulder on mating face. On these
installations, use a straight edge to check centerline alignment.
4. Check for angular misalignment, by hand holding coupling faces tightly together; check
for a gap between faces with a .003 in. (0.07 mm) feeler gauge at 90 intervals.
V-Drive Shown - Down Angle Similar
Index
Page 2D-8
Downloaded from https://needmanual.com/
Wrong
a - Feeler Gauge (Check At 90 Degree Intervals)
b - Transmission Output Flange
c - Propeller Shaft Coupler
Right
a
b
c
SERVICE MANUAL NUMBER 23
72597
50609
90-861326--1 MARCH 1999