WARNING NOTICE Never use air pressure that is more than 205 kPa (30 psi). Make sure the line is equipped with a water filter. Wear eye protection when seating, polishing or cleaning the motor with air pressure. During the seating and polishing procedure, keep fingers away from components in rotation. For prevention of injury to fingers, do not use a commutator cleaner or brush seater stone that is shorter than 63.5 mm (2.50 in.). 12. After the brushes have the correct seat contact surface, operate the motor at slow speed. Use compressed (pressure) air to remove all dust and abrasive grit.
Armature Tests Tools Needed 3 Digital Multimeter Or Equivalent 1 Growler Tester 1 Test For Short Circuit Brush Seating (3) ZLX Р0036 Brush seater stone. 4 1 5 9. Put ZLXP0036 Brush Seater Stone (3) on the commutator and operate the motor at a slow speed. NOTICE Do not let stone (3) stay in contact with the commutator bar too long. This causes more wear than is necessary to the brushes and the commutator. 3 2 10. Move stone (3) across the commutator at the backe edge of the brushes for a short time. This will take the shiny finish off the commutator and seat the new brushes. Short Circuit Test (1) Growler. (2) Armature. (3) Hacksaw blade. (4) Green light. (5) Red light. 1.
Put armature windings (2) in the jaws of growler. (3). 11. Turn the key switch to the OFF position and disconnect the batteries. Check the contact surface of each brush. At least 85% of the brush contact surface of each brush must show wear. If necessary, do Steps 8 through 11 again until the correct wear can be seen on the brush contact surface. 2. Turn the growler (1) on. Slowly turn the growler on the armature (2) while a hacksaw blade (3) is held over the windings. 3. If the windings are shorted, the green light (4) will be on. The red light (5) will be on if the windings do not have a short.
The odor of burned insulation from the drive motor while it is in operation is an indication of a short in the armature. Power Train Testing And Adjusting 15