Invacare 1900 - Inspecting;Tightening the Seat; Inspecting and Adjusting the Lift Column

SECTION 3—MAINTENANCE AND TROUBLESHOOTING
1900/1900S Bath Lift 20 Part No. 1148113
Inspecting/Tightening the Seat
NOTE:Forthisprocedure,refertoFIGURE 3.2.
NOTE:Makesurethenutsandboltsholding
theseattotheseatmountingbracketandthe
brackettotheliftcolumnaretightatalltimes.
1. Removetheshrouddirectlybehindthe
seatbypullingitstraightup.
2. Useasocketwrenchtotightenthenuts
attachingthebrackettotheliftcolumn.
3. Withaendwrenchtightenthenuts
attachingtheseattothebracket.
FIGURE 3.2 Inspecting/Tightening the Seat
Inspecting and Adjusting the Lift Column
NOTE:Forthisprocedure,refertoFIGURE 3.3.
NOTE:Thesixnylonbearingsinstalledintheoutercolumnhavebeenadjustedatthefactory
beforeshipping.Theykeeptheoutercolumncenteredaroundtheinnercolumnandprovidea
smoothglideupanddown.Theendsofthebearingscanwearwithuseandshouldbechecked
periodically.Approximatelyeverysixmonths,checktheadjustmentofthebearings(Detail“C”).
1. Removetheoutershroudbyremovingthetwofrontandfourrearmountingscrews,
andtheselftappingscrewsholdingthetwohalves oftheshroudtogether(Detail“A”).
2. Raisetheliftuntilabout18”oftheinnercolumnareexposed.
3. Rubalightcoatofmachineoilupanddowntheinnercolumnuntilafilmofoilis
clingingtoallfoursurfaces.
4. Raiseandlowerthelift.
5. Checkthefoursurfacesoftheinnercolumntoseeifthereisanoticeabletrackinthe
oilfilmfromthenylonbearings(Detail“B”).
NOTE:Ifthebearingsaremakingsufficientcontactwiththeinnercolumn,youwillseefourtracks
intheoil.
6. Ifthereisnotatrackintheoilfilminoneormoreofthesidesoftheinnercolumn,that
sidesbearingsneedtobeadjustedINtowardthecolumnbyperformingthefollowing:
A. Usingaverylargebladedscrewdriveroraquarterheldfirmlywithapairofpliers,
turnthebearingINjustan1/8thofaturn(Detail“C”).
B. Runtheliftupanddown
againandseeifthebearingisnowcontactingtheinner
columnenoughtomakeatrackintheoil.IfnotrepeatSTEP“A ” . 
NOTE:Whenboththeleftandrightsidesandthefrontandbacksidesoftheinnercolumnshow
aslighttrackintheoilfilm,yourbearingsareproperlyadjusted.
NOTE:ItisveryimportantthatyouDONOTrunthebearingsinsofarastomaketheliftbind
goingupanddown.
7. Wipetheexcessoilfilmandreplacetheshroud.
Locknuts
Bracket
Locknuts