Mercury MerCruiser MCM 454 Mag MPI Service Manual page 924

SERVICE MANUAL NUMBER 23
Removal and Installation
The following procedure describes removal of transmission without removing en-
gine. If engine must be removed, refer to Section 2 (see "Table of Contents").
1. Drain transmission fluid.
2. Disconnect fluid cooler hoses.
3. Disconnect shift cable.
4. Disconnect wires from neutral start safety switch.
5. Disconnect wires from fluid temperature switch.
6. Disconnect propeller shaft coupling.
7. Remove four rear mount (to engine bed) bolts.
8. Support rear part of engine with either a hoist or by using wooden blocks under flywheel
9. Remove two center transmission-to-flywheel housing attaching bolts and install two
IMPORTANT: These two long studs will help support weight of transmission during
removal and installation.
10. Remove remaining transmission attaching bolts.
11. Pull transmission straight back and off engine.
12. Check transmission output shaft rolling torque. See "Specifications".
13. Apply Quicksilver Engine Coupler Spline Grease to transmission input shaft splines and
14. If removed, install rear engine mounting brackets. Torque to 45 lb. ft. (61 N·m).
15. Align transmission splines with drive plate splines.
16. Slide transmission into place and secure with bolts.
17. Remove two long studs (installed in Step 9) and install remaining two bolts. Torque all
18. Relieve hoist tension and fasten rear engine mounts to engine bed. Tighten bolts
19. Connect wires to neutral start safety switch.
20. Connect wires to fluid temperature switch.
21. Connect fluid cooler hoses to transmission.
Index
90-861326--1 MARCH 1999
Downloaded from https://needmanual.com/
housing.
long studs.
engine drive plate splines.
bolts to 50 lb. ft. (68 N·m).
securely.
VELVET DRIVE IN-LINE TRANSMISSION
NOTICE
Page 8A-9