Repair Work; Replacing And Calibrating Drive Motor; Replacing The Motor - Invacare Typhoon II Service Manual

7

Repair Work

CAUTION: Risk of damage to the vehicle! Collisions can be caused if shim rings are
removed from the drive wheels during installation work!
• Shim rings are frequently placed between the drive shaft and the wheel hub to compensate
tolerances. Collisions can be caused if these shim rings are removed and not re-installed!
Please install all shim rings in exactly the same positions they were in before dismantling.
7.1

Replacing and calibrating drive motor

The following two sections describe how a GB motor is replaced and a new motor is calibrated. We
recommend that you read these instructions completely through before commencing work.
GUIDELINE – First find out whether the vehicle is fitted with puncture-proof tyres or
pneumatic tyres!
The course of action during disassembly is different depending on whether the vehicle is fitted
with puncture-proof tyres or standard pneumatic tyres ! You can recognise puncture-proof tyres
by the fact that they do not have a valve !
7.1.1

Replacing the motor

CAUTION! Danger because wheelchair can tip or roll away !
• Prevent the wheelchair from tipping by inserting a wooden block which is long and wide
enough under the battery case! If the wooden block is too short or too narrow the wheelchair
can still tip!
• Switch the wheelchair off at the remote!
EXPLOSION HAZARD!
If the wheelchair is fitted with pneumatic tyres, the wheel can explode if the air is not
released from the tyre before removing the wheel !
• Always release the air from the wheel before it is removed (depress the small tappet in the
centre of the valve) !
CAUTION! If the wheelchair is fitted with
puncture-proof tyres, the liquid in the tyres
can block the valve when air is released if
the valve is at the bottom ! The air cannot
then be released!
• Before releasing air from the wheel, always
turn the wheel so that the valve is at the top
!
Injury hazard! The wheelchair will drive in an uncontrolled manner if the GB motors are
not calibrated after being fitted new !
• Ensure that the GB motors have been calibrated after being fitted!
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