Troubleshooting - Motor/Gearbox/Brake - Invacare TDX SI Service Manual

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

Troubleshooting - Motor/Gearbox/Brake

SYMPTOM
Bad coupler between motor and
gearbox or bad bearings.
Motor makes a
clicking noise.
Raised commutator plate inside of
motor.
Bad gearbox.
Grinding noise or
Bad coupler between motor and
motor is locking up.
gearbox or bad bearings. Bad Gears.
Motors stall and Current Rollback.
starts up again.
Wheelchair will not Check motor locks.
drive with power
on (E09 or E10).
Damaged connector or worn
brushes.
Motor chatters or
runs erratically, or
Bad motor or gear box
only one motor
Controller malfunction.
turns.
Wheelchair veers Uneven tire pressure.
to the left or right Motors out of balance.
when driving on
level surface.
E09/E10 error code Bad motor connection.
will not go away. Bad brake coil.
Bad seal around drive shaft
Gearbox is leaking
Fluid.
Loose hardware.
Bad bearing in motor or gearbox.
Excessive clicking
coming from
Loose wheel hardware.
motor/gearbox.
Gearbox shaft Rough driving.
movement or bent
shaft.
Poor connection or worn brushes.
Motor Stutters.
Motor Fails to start Battery voltage is too low.
after initial Bad Connection.
installation. Brake Disengaged.
TDX® SI/SI-HD
PROBABLE CAUSE
26
SOLUTIONS
Replace coupler.
If bearings are bad, replace motor.
Ohm out motor and replace motor if high reading
is present. Normal reading is .5-5 Ohms.
Replace gearbox.
Replace coupler.
If bearings are bad, replace motor.
Stop driving and let electronics cool.
Engage motor locks to drive wheelchair.
Ohm out motors. Check brushes and replace
brushes if necessary. Replace motor if high reading
is present. Normal reading is .5-5 Ohms. 4 Pole
ONLY.
Check for error codes with programmer. Refer to
the MK6i Electronics Programming Guide, part
number 1141471.
Inflate tires.
Replace tires if worn.
Use programmer to balance motors.
Check all connections. Ohm out each brake coil.
Normal reading is 48-80 Ohms.
If seal is bad, replace gearbox. Remove motor
brushes and inspect for grease contamination.
Replace motor if contamination is found.
If loose hardware is found retighten hardware.
Replace motor or gearbox.
Tighten hardware, (use removable Loctite®on
hardware). Follow torque settings in this manual.
Replace gearbox.
Check Anderson connectors. Check brushes and
replace if necessary.
Check batteries and recharge if necessary.
Check connector.
Engage brake.
Part No 1160845