4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors
4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors
4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors
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ToC<br />
06 ELECTRICAL SYSTEM<br />
SERVICE MANUAL MARINE ENGINES<br />
06.01.04 Check alternator (error detection for BOSCH alternator, 4 cyl. engines)<br />
Trouble features<br />
With engine stopped and ignition on,<br />
generator control lamp (L1) not<br />
shining or only slightly.<br />
Test procedure<br />
Tester lamp connected between B+<br />
and D+ on generator ; shining brightly.<br />
Tester lamp connected between B+<br />
and D+ on generator ; not shining, but<br />
shining brightly when connected<br />
between D+ and ground. Generator<br />
control lamp (L1) does not shine in<br />
both cases.<br />
Error and/or Relief<br />
Generator control lamp (L1) burned<br />
out and/or disconnection in electric<br />
circuit of generator control lamp (L1)<br />
between term. 15 (No. 15000-xx) and<br />
term. D+ (No. 61000-02) on<br />
generator.<br />
Short circuit of a positive diode.<br />
Immediately disconnect starter<br />
battery from generator, otherwise<br />
battery may be discharged on state -<br />
> replace generator.<br />
With both engine stopped and<br />
running, generator lamp (L1)<br />
constantly shines brightly.<br />
Tester lamp connected between D+<br />
and ground; tester lamp and<br />
generator control lamp (L1) glowing.<br />
With engine stopped, disassemble<br />
attached governor.<br />
Generator control lamp (L1) still<br />
shining brightly.<br />
Generator control lamp (L1)<br />
extinguishes. Install governor again.<br />
Connect ammeter between B+ and<br />
D+ (on generator). Exciting current<br />
is lower than specified (4 amp<br />
+/- 0,4).<br />
Exciting current is higher than<br />
specified (4 amp +/- 0,4).<br />
Error, wipers of governor worn out,<br />
oxid film on slip rings, disconnection<br />
of rotor winding -> replace governor<br />
and/or generator.<br />
Earth short circuit in lead betweeen<br />
generator control lamp and terminal<br />
D+ on generator.<br />
Governor is defective -> replace<br />
governor.<br />
Earth short circuit in the field of<br />
governor and connection DF (see<br />
ill.) of generator, earth short circuit in<br />
rotor winding -> replace generator.<br />
With engine stopped, generator<br />
control lamp (L1) shines brightly,<br />
with engine running only shines<br />
slightly.<br />
Connect tester lamp between B+ and<br />
D+ of generator.<br />
With engine running, tester lamp<br />
extinguishes.<br />
With engine running, tester lamp<br />
glows.<br />
With engine stopped, install new<br />
governor and start engine again.<br />
Tester lamp between B+ und D+<br />
Tester lamp extinguishes<br />
Tester lamp still glows<br />
Contact resistance in charging circuit<br />
or in conductor to generator control<br />
lamp (L1)<br />
Governor or generator defective.<br />
Disassembled governor was<br />
defective.<br />
Generator is defective -> replace.<br />
Page ELECTRICAL SYSTEM - 14 Z001019/0_6_July 2008
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