Service manual

3. Electrical Parts
3-41
3. Rotation of contact plate
SG06035E
1) When motor begins to rotate, the worm fitted to the motor shaft rotates and at the same time
worm wheel rotates.
2) The worm wheel and contact plate are interconnected and so it continues to rotate as shown in Fig
c.
4. Stop of contact plate rotation
SG06036E
1) When contact plate turns to 180˚ from the position at which it does not begin to rotate, there will
be no conductivity between No.6 and No.2 terminals, and then No.2 terminal will be connected to
the grounding. Also the armature of motor will get short-circuited to electrically brake. Accordingly
the contact plate will stop at the specified position.
2) At the same time worm rotation is reduced by worm wheel, and further the rotation will be
changed for reciprocal movement via the lever. The stroke extends the wire to move the fuel lever
fitted at the injection pump to open the fuel circuit.
3) When the contact plate is positioned in Fig d, there is no conductivity between No.6 and No.5
terminals, and battery voltage is applied to the motor stopper relay No.6 terminal.