Question about Heavyduty Jazzy 1121 Standard & Heavy Duty Power Wheelchair

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Drive wheel locking up

Jazzy 1121 power wheelchair---My right drive wheel will lock up while I'm traveling.It won't go forward or back. When I remove and replace motor & gearbox it will go again I've checked the freewheel lever and it's fine. Could it be a problem in joy-stick? I've checked for broken or bent gears they're O.K.

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Further to my above answer,
check all connector blocks and make sure they are clean and not corroded if they are clean with emery paper or replace as needed. it might also be the motor brushes that are not making contact properly, these are located on the sides of the motor under a small black cover about the size of a UK 1p these unscrew and the brushes pull out, there is a spring attached that pushes the brush against the motor, take them out (one on ether side of each motor 2 in total to each motor) and clean with alcohol or similar, be careful not to damage them, as they are out use a Hoover to suck out any dust particles out of the motor housings, just put the tube over the holes you removed the brushes from and suck. then back to the brushes, when they are clean and dry replace them back in to the slot you removed them from, do not force, they should slide back with ease you need to place the spring and the gold cap back in and hold it there as you place the cover back and tighten up the covers, you will need to turn the spring cap around until it slot in. see picture
drive wheel locking up - 6d112d17-af3c-4b8c-b862-1f0b0bb7460b.jpg

if this helps you please click "YES" button

good luck,
Mark.

Posted on Jul 23, 2014

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 On some Jazzys there is a tension adjust on the freewheel lever. It could be that. But if you have replaced the motor and gearbox and it still is doing it the motor and gearbox should still be under warranty.

Posted on Mar 26, 2009

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I had a similar prob it was dirt on the controller plug ( the lead that comes out of the joy stick controller and plugs in tho the 8+1 pin socket at the back of the chair just below the seat level) i just used some emery paper and cleaned the pins on the plug and prob sorted.

Posted on Oct 05, 2012

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I suggest you print this out and keep it handy.

Locking/Unlocking the VSI

The VSI has a feature that enables you to

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