Troubleshooting GP Repair
wc_tx000548gb.fm 90
6.16 Checking AVR’s Sensing Wires—GP 2500A
See Graphic: wc_gr003148
There are two sensing wires feeding the Automatic Voltage Regulator
(AVR) both attached to main winding 2. If the sensing wires are
shorted or broken, the AVR will not perform correctly. To check the
continuity of the sensing wires, carry out the following procedures:
6.16.1 Stop the engine.
6.16.2 Remove the two screws which secure the end cover to the generator
and remove the end cover.
6.16.3 Disconnect the generator plug (a).
6.16.4 The two sensing wires are the brown and blue wires that share the
same connector (b) as the wires for the DC winding; disconnect this
connector.
6.16.5 Check each wire from the DC winding plug (c) with its counterpart in
the generator plug (d): blue to blue; brown to brown. In each case there
should be continuity. Also check the wires from the DC winding plug to
the generator plug, blue to brown; and brown to blue. In each case
there should be continuity.
• If the wires have continuity in all cases, the sensing wires are OK.
• If the wires lack continuity in any of the tests, the sensing wires
have failed; replace the stator.
To Next Page
Loading...
Need help?
General
