CHARGING SYSTEM - 4C-190-823225--1 1096
Mando 55 and 65 Amp
Alternator Identification
72078
b
c
a
a - Excitation Wire - PURPLE
b - Sensing Wire - RED/PURPLE
c - Mando Part Number (Hidden In This View)
Replacement Parts Warning
!
WARNING
Electrical, ignition and fuel system components
on your MerCruiser are designed and manufac-
tured to comply with U.S. Coast Guard Rules and
Regulations to minimize risks of fire and explo-
sion.
Use of replacement electrical, ignition or fuel
system components, which do not comply with
these rules and regulations, could result in a fire
or explosion hazard and should be avoided.
Specifications
Description Specification
Excitation Circuit 1.3 to 2.5 Volts
Current Output
55 Amp. 50 Amp. Min.
65 Amp. 60 Amp. Min.
Voltage Output 13.9 to 14.7 Volts
Min. Brush Length 1/4 in. (6 mm)
Tools/Sealants
Description Part Number
Bearing Removal and
Installation Kit
91-31229A5
Magneto Analyzer 91-76032
Universal Puller Plate 91-37241
Multi-Meter/DVA Tester 91-99750
Quicksilver Liquid
Neoprene
92-27511-2
Ammeter (0-50 mm) Obtain Locally
Torque Specifications
Fastener Location In. Lb. Ft. Lb. N·m
End Frame Screws 55 5.5
Brush Set Screws 18 1.5
Regulator Mounting
Screws
42 4.2
Regualtor Leads 25 2.5
Ground Terminal Nut 25 2.5
Pulley Nut 42 4.2
Alternator Brace to
Alternator
20 27
Alternator Brace to
Block
30 41
Alternator to Mounting
Bracket
35 48
Alternator Mounting
Bracket
30 41
V-Belt
Tension (Note) Depress 1/4 in.
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