Using Ammeter With Current Measuring Probe

Connectthe positive (+) lead from the battery to terminal 1, and the negative (-) lead to terminal 2. See Fig 1.
Attach a current measuring probe to either the positive (+) lead or the negative (-) lead, and move the side support to most closed position.
Continue to apply voltage. Check the current changes from approximately 4 ampere to less than 0.3 ampere within 4-60 seconds.
Disconnect the leads from terminals.
Approximately 60 seconds later, connect the positive (+) lead from battery to terminal 2, and the negative (-) lead from battery to terminal 1. See Figure. Check that the side support starts to spread. If operation is not as specified, replace the motor.

Fig 1: Testing Side Support Motor With Current Measuring Probe