TP-6137 5/03
56
Section 9 Generator Troubleshooting
Alternator Troubleshooting and Corrective Action
Problem
Possible Cause
Corrective Action
No output
Low revolving speed
Check and adjust the revolving speed.
p
Incorrect connections
Check the wiring diagram and reset the
connections.
Inoperative capacitor
Replace the capacitor.
Winding breakage
Check the winding resistance and
replace the damaged parts.
Rotating diode(s) damage
Check and replace the diode(s).
Low no-load voltage
Low revolving speed
Check and adjust the revolving speed.
g
Rotating diode(s) damage
Check and replace the diode(s).
Capacitor with low capacity
Increase the capacitor capacity.
Winding breakage
Check the winding resistance and
replace the damaged parts.
High no-load voltage
Capacitor with high capacity
Reduce the capacitor capacity.
g
g
High speed
Adjust the revolving speed.
Correct no-load voltage but low
l
l
d
Rotating diode(s) damage
Check and replace the diode(s).
g
voltage at load
Low speed at full load
Operate on the speed governor.
Load too high
Reduce the voltage supplied
Unstable voltage
Uneven rotation
Check the engine
g
Poor connection contacts
Check the wiring diagram and reset the
connections.
Uneven load
Check the load and eliminate the
uneven loads.
Unit is noisy
Poor coupling
Check and correct the coupling.
y
Short circuit in winding or load
Check windings and loads and replace
the damaged parts.
Bearing breakage
Replace the broken bearing
9.7 Alternator Excitation
As a result of disassembling the generator set, the
alternator can get deenergized. It is then necessary to
excite the alternator (after reassembly to the engine) by
applying 12 volts DC to the line terminals. Connect in
series a 10 amp, 250 volt fuse to the positive wire going
to the battery. See Figure 9-10.
Figure 9-10
Alternator Excitation
Содержание 3.5EFOZ
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Страница 102: ...TP 6137 5 03 90 Section 10 Generator and Engine Disassembly Reassembly Notes ...
Страница 104: ...TP 6137 5 03 92 Section 11 Wiring Diagrams 11 1 Wiring Diagram Schematic GM20645 B ...
Страница 105: ...TP 6137 5 03 93 Section 11 Wiring Diagrams 11 2 Wiring Diagram Point to Point GM20645 B ...
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