Motor Assembly - Invacare Mirage Service Manual

10 Motor
Parts :
1 Electro Magnetic
Brake
2 Brush
3 Connector
4 Motor Complete
5 Commutator
6 Motor End Cap
10.1 Tools Required
•
No 1 Cross Point Screwdriver
• Flat Headed Screwdriver
•
Soldering Iron
• Multimeter
•
3mm Hex Wrench
10.2 Inspection
1. Check motor assembly for damage.
2. Set multimeter to continuity test. Test continuity of motor leads (3) and electro-magnetic
brake leads (3). Brake resistance should read 50ohms - 80 ohms.
3. Check all joints for bad connection, cracked or dry solder joints and oxidation.
4. Check that all the brushes (2) can move freely in the brush guides with no obstruction (this can
be easily done by pulling on the free brush feeder wire).
5. Check that all the brushes (2) are not chipped, cracked or worn.
6. Check that the brush (2) spring is positioned to the centre of the brush body to apply even
force. Also check the brush spring tensions.
7. Check the condition of the brush (2) feeder wire and check that the termination screws are
secure.
8. Visually inspect the commutator (5) for carbon deposits and remove with a soft brush.
Note:
•
Ensure all the segments of the commutator are not bridged with conductive materials (i.e.
Carbon or Copper)
10.3 Disassembly
Caution
• Disconnect the battery and the motor from the power module before proceeding with this
instruction.
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4
5
2
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