Checking Motor, Magnetic Brake And Free-Wheel Switch - Invacare STORM Service Manual

Testing carbon brushes
• Testing length:
Measure the length of the carbon brush.
Orginal length = 13 mm.
Wear limit = 11 mm
Once the carbon brush has reached the wear limit of 11 mm,
it must be replaced.
• Testing the bearing surface:
Perform a visual inspection of the running surface.
It must show only slight running traces.
If the running surface shows deep grooves, the motor collector
is damaged.
Any further repair of the motor can only be performed by the
INVACARE-Service Department.
Installing carbon brushes
• Place carbon brush into its guide (see drawing).

NOTE:
Make sure that the carbon brush is not canted when
introduced. It must be able to move smoothly within the
guide.
• Introduce the solder cap of the carbon brush into the
guide as shown in the drawing.
• Screw in the stopper.

NOTE:
Do not fasten too tightly, it would destroy the stopper.
13.3 Testing motor, magnetic brake and free-wheel switch
Testing preparations / replacing drive motors
• Remove battery boxes.
• Remove splash protection.
• Remove cable binders.
• Remove the connection plug of the motor to be tested
or replaced from the socket board.

NOTE:
Press down plug lock as otherwise the plugs would be dama-
ged.
Wear Limit
min. 11 mm
Running Surface
Installing Carbon Brushes
Guide
Carbon Brush
Solder Cap
Stopper
Remove BUS plus
Motor Cable
Motor Cable
71