Welkin WKEM002, User Manual

Page: 19 / 22

19
5. Brakes require adjustment.
Brakes squeal 1. Pads / discs dirty.
2. Brakes not centred.
3. Calliper fasteners loose.
1. Clean and degrease.
2. Centre brakes and adjust.
3. Tighten.
Brakes chatter / vibrate 1. Brake mounting bolts
loose.
2. Brakes out of adjustment.
3. Steering head bearings
loose.
1. Tighten.
2. Centre brakes and adjust.
3. Adjust bearings.
Wheel vibration / wobble 1. Axle bent or broken.
2. Wheel out of true.
3. Wheel hub bearings loose /
not
serviceable.
4. Quick-release (if equipped)
mechanism loose.
1. Replace.
2. True wheel.
3. Adjust / replace.
4. Adjust.
Steering not accurate 1. Wheels not aligned to
frame.
2. Steering head loose /
binding.
3. Front forks or frame bent.
1. Align wheels.
2. Adjust.
3. Straighten.
Motor "clicks" / has reduced
power and/or shuts off
1. Under-charged battery.
2. Motor internal fault.
1. Charge battery. Follow
battery care procedures.
2. Replace.
No power when pedal
assistance switched ON
1. Blown fuse.
2. Loose connectors / wiring
damage.
3. Faulty switch.
4. Faulty controller.
1. Replace.
2. Check connectors / wiring.
Replace
as required.
3. Replace.
4. Replace.
Pedal assistance OK, but no
display
1. Loose connectors / wiring
damage.
2. Faulty controller.
1. Check connectors / wiring.
Replace
as required.
2. Replace.
Display OK, but no pedal
assistance
1. Loose motor connectors /
wiring damage.
2. Poor contact at battery
terminals.
3. Faulty braking sensor.
1. Check connectors / wiring.
Replace as
required.
2. Inspect and clean
terminals.
3. Replace.
Bicycle runs at full
speed without
pedaling
1. Faulty crank sensor.
2. Faulty throttle.
3. Faulty controller.
1. Replace.
2. Replace.
3. Replace.