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• Rotationcheck:To checkthe rotation, holdthe front
ofthe ann withone handand graspthetop ofthe
columnsupportwiththe other.Pressthe arm tothe
side.If there isplay between thecolumn support
and the columntube, itneeds tobe adjusted.See
Figure20B.
COLUMNTUBE
ElevationAdjustment
COLUMN
COLUMN
SILVER BLACK
SCREWS
COLUMNSUPPORT Fig, 20B
• ElevationAdjustment:Ifthe elevationcheckdidnot
showany play between the columntube and the
support,goto the rotationadjustment.Otherwise,
raiseand lowerthe ann withthe elevatinghand-
wheel. Tightenthe blackscrewsonthe rightsideof
the columnsupportby 1/16th to1/8th of a turn.
Tightenthe twosilverscrews on the leftside
slightlymore.You willneedtwo 1/2 in.wrenchesor
sockets.Turn the elevatinghandwhselagain. If the
columntube binds,loosenthe silverand black
screwsand tum the handwheelagain. ?SeeFigure
20C.
• Whenthe elevationis smooth,check for looseness
again bypressingupwardon the frontofthe arm.
Repeat the previousstep untilelevationis smooth
withno play between the columntube and the
columnsupport.
Fig. 20C
• RotationAdjustment:Usinga 3/16 in.bax key,
slightlytightenthe twocap screwsat thebackof
the columnsupport(leftside) untilno playshows
between the radialarm and the column. The cap
screws are indicatedby arrows.See Figure20D.
• Recheckthe rotationbyholdingthe frontofthe
arm, graspingthetop ofthe columnsupportwith
the other,and pressingthe ann tothe side.
RotationAdjustment
CAP
SCREWS
Fig. 2OD
29 CIIIIFTSNAI('RADIALRAW$1S.,_
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