Segway Personal Transporter i2 - When to Replace; How to tell the difference

Segway®PersonalTransporteri2,x2,x2Turf PartsReplacementGuide 8‐3
When to Replace
Itisappropriatetoremoveandinspector
replacethegearboxforreasonsthatinclude,but
arenotlimitedto,thepresenceofthefollowing
symptoms.
• Excessiv
ewheelwobblethatcannotbe
remediedbyeitherchangingwheelposition
ongearboxbyrotatingmountingposition
by180degreesorbyreplacingthetire/wheel
assembly.
Thewh
eelhubhasthreeholesthat
correspondtothreegearboxflangestuds.
Thewheelcanmounttothegearboxinany
ofthreepositions,relativetotheseholes.
Clockingthewheel(thatis,advancingthe
wheeltothenextofthesethreepossible
positions)mightminimizewheelwobbleon
someun
its.
• Excessiv
eandprogressivelyworsening
noiseand/orvibrationthatcannotbe
remediedbyremovingpotential
obstructionsofthewheel,byproperly
inflatingthetire,orbyreplacingthetire/
wheelassembly.
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RTV Silicone Sealant vs. Gasket
Earlyproductioni2modelswereassembled
usingroomtemperaturevulcanizing(RTV)
siliconesealanttosealthegearboxtothe
SegwayPTchassis.Morerecently,someparts
werechangedtoallowuseofagasketinplace
oftheRTVsiliconesealant.
How to tell the difference
Gearboxspacerswitha10‐digitpartnumber
stampedonthetopandbottomwereassembled
withagasket.Gearboxspacersthatdonothave
a10‐digitpartnumberwereassembledusing
RTVsiliconesealant.SeeFigure8‐1.
Figure8‐1:GearboxSpacerPartNumber
Why does this matter?
GearboxesoriginallyinstalledusingRTV
siliconesealantcannotbereinstalled.The
factory‐installedsealantprovidesan
environmentalsealthatpreventsdamagetothe
sensitiveelectronicsinsidetheSegwayPT
platform.FieldreinstallationofRTVsilicone
sealantisnotsupportedbySegway.
Whenage
arboxwithRTVsiliconesealantis
removedforthepurposeofreplacingthe
elastomerbushing,theentiregearboxalso
needstobereplacedwithanewreplacement
gearboxandgasket.
ReplacementgearboxesshippedfromSegw
ay
arebackwardcompatiblewithalli2andx2
models.
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Field reinstallation of RTV silicone sealant is
neither recommended nor supported by Segway.
Warranty will be void if this restriction is not
followed.
partnumber