Motor Pull Direction & Limit Switch Operation

Fig. 96 Motor Pull Direction & Limit Switch Operation:

1. Connect ammeters to actuator side connector.
2. Current should be cut off when selector is turned in Pull (fully open), direction for full stroke. Ammeter A1 should read .6-.7 amps. Ammeter A2 should read less tan .5 amps, when current is on.
3. If selector moves in Pull direction, ammeter reads .5-.7 amps but ammeter A2 reads 1 amp or more, check for improper gear backlash, burning between shaft and metal, or insufficient thrust clearance.
4. If selector does not move, ammeter A1 reads .5-.7 amps and ammeter A2 reads 1 amp or more, check the following:
a. Burned shaft or motor, or foreign material caught between gears.
b. If selector does not move, ammeter A1 reads .3-.7 amps and ammeter A2 reads .0 amps, proceed to step c.
c. Check for damage to disconnected internal lead wire or motor wiring, poor connection of limit switch, or open diode.
5. With selector stroke in the intermediate level, disconnect connection to terminal 3, then cut the current flow to the clutch coil.
6. If selector does not return to original position, even if current is cut to the clutch coil, check for clutch plate remaining engaged with clutch.