CHARGING SYSTEM
SERVICE MANUAL NUMBER 23
5.
If reading is between 6.0 and 7.0 volts, rotor field circuit probably is open. Remove regu-
lator and inspect for worn brushes or dirty slip rings. Replace brushes if less than 1/4
in. (6 mm) long. If brushes and slip rings are in good condition, disassemble and perform
rotor test as outlined under “Component Testing - Rotor” following.
g
f
d
e
b
c
a
72785
a - Excitation Wire - PURPLE
b - Sensing Wire - RED/PURPLE
c - Tie Bar
d - Voltmeter (0-20 Volts)
e - Ground
SENSING CIRCUIT
1.
2.
Unplug RED/PURPLE lead from voltage regulator.
Connect positive (+) voltmeter lead to red/purple lead and negative (–) voltmeter lead
to ground terminal.
3.
Voltmeter should indicate battery voltage. If battery voltage is not present, check sens-
ing circuit (red/purple lead) for loose or dirty connection or damaged wiring.
d
a
e
c
72786
b
a - Output Wire - ORANGE
b - Excitation Wire - PURPLE
c - Sensing Wire - RED/PURPLE
d - Voltmeter (0-20 Volts)
e - Ground
Page 4C-10
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...