Replacing Carbon Brushes; Seat System; Replacing Seat Suspension/Spring - Invacare Comet Series Service Manual

Installation
1. Install parts in reverse order.
CAUTION!
Reduced function when clutch is mounted
incorrectly
– Make sure to mount clutch A with
inscription "M" facing motor.
CAUTION!
No breaking efficency without feather key
– Make sure to mount feather key B on
motor shaft A when reassembling.
2. Tighten screw B on swing arm to 15 Nm.
3. Check all functions (trial run).

4.10.2 Replacing carbon brushes

Always replace all the carbon brushes on both
motors.
• 5 mm Allen key
• 6 mm Allen key
• 10 mm socket wrench
• 19 mm socket wrench
Blade screwdriver
Long wooden blocks, min. 14 x 14 x 30 cm
Removing carbon brushes
1. Switch off mobility device.
2. Remove drive wheels.
3. Disengage motor A by setting the engaging lever to
"Push".
1603798-B
4. Loosen and remove all four plastic caps B.
Note the fixing position and location of the
carbon brushes.
Used carbon brushes need to the refitted exactly
in the same position from which they were taken
in order to guarantee optimum contact to the
collector.
5. Make a marking on the motor and the carbon brushes
in order to guarantee correct installation.
6. Remove carbon brushes completely from mounting C.
7. Check carbon brush and spring for level of wear, broken
components or discolouration.
Installing carbon brushes
1. Depending on condition of brush and spring: - either
install brushes in exactly the same position from which
they were taken or - fit new brushes.
2. Install plastic caps and tighten them firmly.
3. Install drive wheels..
The following procedure is necessary to run
carbon brushes in after replacement and thus
guarantee maximum performance.
CAUTION!
Risk of accidents
Injuries to workers, damage to surroundings
and mobility device.
– Do not leave mobility device unattended
during the following procedure.
– Secure area.
4. Lift mobility device up on one side and get a second
person to place a wooden block around 14 cm high
underneath it so that the drive wheel is suspended
freely.
5. Repeat on other side of mobility device.
6. Allow motors to run for an hour in forward direction.
7. Allow motors to cool down for 30 minutes.
8. Allow motors to run for an hour in reverse direction.
9. Lift mobility device off wooden blocks.

4.11 Seat system

4.11.1 Replacing seat suspension/spring

CAUTION!
Risk of accident
Accidental rolling can lead to accidents.
– Secure the scooter against rolling away.
When disassembling, note the position of small parts
such as screws and washers. Put small parts down so
that they can be reassembled in the right sequence.
The following seat support tubes lengths are available for
the seat suspension:
• 508.5 mm
• 533.5 mm
• 558.5 mm
• 17 mm wrench (2x)
1. Secure scooter against rolling away.
2. Remove seat.
Service
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