SPECIFICATIONS

Vehicle Systems Testing And Adjusting
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 finger, do not use a commutator clean-
er or seater stone that is shorter than 63.5 mm
(2.50 in).
Brush Seating
(3) Brush seater stone.
9. Put ZLX0036 Brush seater Stone (3) on the com-
mutator and operate the motor at a slow speed.
NOTICE
Do not let stone (3) stay in contact with the commuta-
tor bar too long a time. This causes more wear than is
necessary to the brushes and the commutator.
10. Move stone (3) across the commutator at the
back edge of the brushes for a short time. This
will take the shiny finish off the commutator and
seat the new brushes.
11. Turn the key switch to the OFF position and dis-
connect the batteries. Check the contact surface
of each brush. At least 85% of the brush contact
surface of each brush most show wear. If neces-
sary, do Steps 9 through 12 again until the cor-
rect wear can be seen on the brush contact sur-
face.
NOTICE
Never use air pressure that is more than 205 kPa (30
psi). Make sure the line is equipped with a water filter.
12. After the brushes have correct seat contact sur-
face, operate the motor at slow speed. Use com-
pressed (pressure) air to remove all dust and
abrasive grit.
Armature Tests
Short Circuit Test
Short Circuit Test
(1) Growler. (2) Armature. (3) Hacksaw blade. (4) Green light.
(5) Red light.
1. Turn the growler(1) on.
2. 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 pump motor
while it is in operation is an indication of a short in
the armature.
Tools Needed
Digital Multimeter Or Equivalent 1
Growler Tester 1
WARNING
56
3
5
3
2
4
1