Mercury MerCruiser MCM 454 Mag MPI Service Manual page 190

MIE MODELS - HURTH TRANSMISSION
c. After engine has been properly aligned: Tighten engine mount nuts securely, and
NOTE: Some rear mounts have only one clamping bolt and nut on each side, instead of the
style with two shown following.
IMPORTANT: Large diameter of mount trunnion MUST NOT extend over 3/4 in. (20
mm) from mount brackets on any of the mounts.
IMPORTANT: All coupler bolts must be Grade 8 (Metric Grade 10.9) or better, with a
shoulder (grip length) long enough to pass through the face mating plane of
couplers.
6. Connect propeller shaft coupler to transmission output flange. Attach couplers together
with bolts, lockwashers and nuts. Torque to 50 lb-ft (68 Nm).
NOTE: If propeller shaft coupler has setscrews, the shaft should be dimpled at setscrew
locations. Setscrews should be safety wired after being tightened securely.
Index
Page 2D-10
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be certain to bend one of the tabs on the tab washer down onto flat of mount adjust-
ing nut. Torque clamping bolts and nuts to 50 lb-ft (68 Nm).
b
a - Torque Clamping Screw and Nut On All Four Mount Brackets To 50 lb-ft (68 Nm)
b - Tighten Locking Nut On All Four Mounts Securely
c - Bend One Of The Tab Washer Down Onto Flat Of Adjusting Nut
d - Maximum Extension Of Large Diameter Of Trunnion - 3/4 in. (20 mm)
a
d
c
SERVICE MANUAL NUMBER 23
70057
90-861326--1 MARCH 1999