SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Pronto® Series
26
Part No. 1125075
Motor chatters or
runs erratically, or
only one motor
turns.
Damaged connector or worn
brushes.
Bad motor or gear box.
Ohm out motors. Check brushes and replace
brushes if necessary. Replace motor/gearbox if
high reading is present. Normal reading is 0-5
Ohms. Refer to Motor Testing on page 31,
Replacing Motor Brushes on page 116 or
Removing/Installing the Motor on page 112.
Motor release lever is disengaged.
Engage motor release levers. Refer to
Engaging/Disengaging Motor Release Lever on
page 114.
Controller malfunction.
Check for error codes with programmer. Refer to
electronics manual.
Wheelchair veers
to the left or right
when driving on
level surface.
Uneven tire pressure.
Motors out of balance.
Inflate tires.
Replace tires if worn.
Use programmer to balance motors.
Gearbox is leaking
Fluid.
Bad seal around drive shaft.
Loose hardware.
If seal is bad, replace motor/gearbox. Remove
motor brushes and inspect for grease
contamination. Replace motor/gearbox if
contamination is found. Refer to Replacing Motor
Brushes on page 116 or Removing/Installing the
Motor on page 112.
If loose hardware is found retighten hardware.
Excessive clicking
coming from
motor/gearbox.
Bad bearing in motor or gearbox.
Replace motor/gearbox. Refer to
Removing/Installing the Motor on page 112.
Loose wheel hardware.
Tighten hardware, (use removable Loctite™on
hardware). Follow torque settings in this manual.
Rough driving.
Gearbox shaft movement or bent
shaft.
Replace motor/gearbox. Refer to
Removing/Installing the Motor on page 112.
Motor Stutters.
Poor connection or worn brushes.
Check DCL connectors. Check brushes and
replace if necessary. Refer to Replacing Motor
Brushes on page 116.
Motor Fails to start
after initial
installation.
Battery voltage is too low.
Bad Connection.
Brake Disengaged.
Check batteries and recharge if necessary. Refer
to Charging Batteries on page 104.
Check connector.
Engage brake.
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
