Alternator Repair; Removal; Disassembly - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23

Alternator Repair

Removal

1. Disconnect negative (–) battery cable from battery.
2. Disconnect wiring harness from alternator.
3. Loosen the 5/8 in. locking nut on the adjustment stud.
4. Turn the adjustment stud and loosen belt. Remove belt.
5. Remove alternator mounting bolt, washers and remove alternator.

Disassembly

IMPORTANT: The following instructions are for complete disassembly and overhaul
of the alternator. In many cases, however, complete disassembly of alternator is not
required and, in those cases, it is necessary only to perform the operations required
to repair or replace the faulty part.
1. Mount alternator in a vise so that rear end frame is facing you.
2. Disconnect regulator leads from terminals on rear end frame. Remove four nuts, Phillips
3. Remove stud cover insulator, two nuts and tie strap from brush/regulator assembly.
Index
90-861326--1 MARCH 1999
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head screw and two regulator leads. Then pull regulator cover away from rear end
frame.
a - Regulator Leads
b - Nuts (4)
c - Phillips Head Screw
d - Regulator Cover
d
c b
a
CHARGING SYSTEM
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