Generator Failure
Page 42 Panda_12mini_PMS_Digital_s00865_Installation manual.V02 - Chapter C: Generator Failure
23.1.07
C.3.3 Lubrication of the spiral thread spindle
The spiral thread spindle must be lubricated carefully and regularly. Use only a temperature resi-
stant safety grease (up to 100°C) ". Ensure lubricant is applied right up to the nuts and especially
between the nuts and the spindle nut (See Fig. C.8, “Actuator mechanism,” on Page 42)
It is possible that the spindle could seize if it is not regularly lubricated. Should this be the case,
the generator may switch off automatically due to over or under voltage.
1. Speed actuator
2. Spiral thread spindle
Fig. C.8: Actuator mechanism
C.3.4 Overload damage to the actuator mechanism
If a generator overload occurs, the voltage falls and the actuator will move to the upper limit trying
to increase engine revolutions. If this situation goes on for a long time it can result in damage to
the actuator windings. The actuator may not become inoperative, but its action may become
weak and not perform in all spindle positions as well as it should. So the voltage of the generator
may be regulated poorly or possibly not at all.
If it is noticed that the spindle of the actuator is operating slowly or erratically the actuator may
need to be replaced. To check the actuator, follow the procedure below.
If the actuator does not move:
1. The actuator does not move but the spindle can be turned manually. Disconnect the power to
the actuator and connect an external 12V-DCsource to the actuator.
a. If the actuator still does not operate it is defective and must be replaced
b. If the actuator works properly with the external voltage source:
1. Check the fuse on the VCS printed circuit board.
2. Check if the alternator voltage sensor (X3) is properly connected to the VCS circuit
board.
3. Check filters.
4. Check if the VCS DC supply voltage is properly connected (clamp 3(+) and clamp 4(-)
of X1) .
5. Check if the VCS output to the actuator is properly connected (clamp 1(+) and clamp
2(-) of X1).
If no fault is found, the VCS circuit board must be replaced.
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