Monaco Executive 2005, Owner'S Manual

Page: 393 / 538

Electrical Systems - Chassis --- Section 9
The Executive 2005
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Alternator Testing Procedure
Alternator Testing:
• Check all wiring for burnt or loose electrical connections. Repair as needed.
• Check all grounds and electrical connections to confirm they are clean and tight.
a. Alternator ground to chassis frame.
b. Motor block ground to chassis frame.
c. Chassis battery ground to chassis frame.
d. Alternator positive output to isolator center terminal.
• Inspect the alternator for damage. A broken fan blade can damage an alternator or throw it
out of balance.
• Check belt, pulley and fan for wear. Replace as needed.
• Do not disconnect the battery, or battery wire, from the alternator with the engine run-
ning as this can damage the alternator or regulator.
• The pulley for the alternator should be torqued to 80 foot pounds.
• Chassis battery voltage with the engine OFF should range from 12.2 to 12.7 Volt DC.
• Chassis battery voltage with the engine at idle should range 13.5 to 14.2 Volts DC.
• The output of the alternator range is 13.6 to 15.4 Volts DC. Connect a volt meter to the
(B+) terminal of the alternator and chassis ground. Idle the engine up to 1200 RPM.
• Connect a clamp-on amp-meter, if available, to the positive battery cable to verify the bat-
tery state/rate of charge.
NOTE:
The alternator is not a battery charger. It is designed to maintain proper electrical sys-
tem voltage. A battery with a low state of charge, or a dead battery, may overheat and
damage the alternator.