Installation; Torsional Damper; Removal - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23

Installation

1. Install pump, with extension shaft, to rear main bearing, aligning extension shaft with
2. Install baffle. Tighten baffle nuts to 25 lb-ft (34 Nm). Tighten oil pump bolt to 65 lb-ft
3. Install oil pan as outlined. The one-piece gasket for the oil pan may be reused if still pli-

Torsional Damper

Removal

1. Remove drive belt.
2. Remove drive pulley and water pump pulley.
3. Remove torsional damper retaining bolt.
IMPORTANT: Do not use a universal claw type puller to remove torsional damper (in
next step) as outside ring of torsional damper is bonded in rubber to the hub. Use of
claw type puller may break the bond.
4. Remove torsional damper with Torsional Damper Remover and Installer.
Index
90-861326--1 MARCH 1999
Downloaded from https://needmanual.com/
distributor drive shaft.
(90 Nm).
a - Nuts (5)
b - Baffle
c - Oil Pump
able and not cracked, torn, etc.
a - Torsional Damper Remover and Installer (J-23523-E)
a
b
c
a
454 CID (7.4L) / 502 CID (8.2L)
75496
72345
Page 3A-53