Troubleshooting
9.2Identifyingandrepairingfaults
FaultPossiblecauseAction
Incorrecttyrepressureononerearwheel
Correcttyrepressure,11.2Tyres,page60
Thewheelchairdoesnot
travelinastraightline
Oneormorespokesbroken
Replacefaultyspoke(s),→qualiedtechnician
SpokestightenedunevenlyTightenloosespokes,→qualiedtechnician
CastorbearingsaredirtyordamagedCleanthebearingsorreplacethecastor,
→qualiedtechnician
RearwheelsaremountedtoofarforwardsMounttherearwheelsfurtherback,
→qualiedtechnician
Thewheelchairtipsbackwards
tooeasily
BackangletoolargeReducethebackrestangle,→qualiedtechnician
SeatangletoolargeMountthecastorupperonthefrontfork,
→qualiedtechnician
Selectasmallerfrontfork,→qualiedtechnician
Incorrecttyrepressureinoneorbothreartyres
Correcttyrepressure,11.2Tyres,page60
Thebrakesaregrippingpoorly
orasymmetrically
BrakesettingincorrectCorrectthebrakesetting,→qualiedtechnician
Tyrepressureinreartyresistoolow
Correcttyrepressure,11.2Tyres,page60
Rollingresistanceisveryhigh
RearwheelsnotparallelEnsuretherearwheelsareparallel,
→qualiedtechnician
ToolittletensionincastorbearingblockTightenthenutonthebearingblockaxleslightly,
→qualiedtechnician
Thecastorswobblewhen
movingfast
CastorhaswornsmoothChangecastor,→qualiedtechnician
ThecastorisstifforstuckBearingsaredirtyorfaultyCleanthebearingsorreplacethecastor,
→qualiedtechnician
Thewheelchairisverydifcult
tounfold
BackrestcoveristootightLoosentheVelcrobandsofthebackrestcoveralittle,
3.5.1Backrestcover,page14
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