JUKI LK-1900B series - 6. MAINTENANCE

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Cautions for disassembly and reassembly
1.WhenincorporatingtheATsolenoidunit
󱢳
, the solenoid cable
󱢴
shouldbelaidbesidetheATsole-
noid. If this solenoid cable
󱢴
ispositionedinthevicinityoftheATlinkunit(rear)
❹
, this will be a cause
ofATsolenoidmalfunction.
2.Thecenter-to-centerdistanceis358mmbetweentheATjointblock
❽
oftheATconnectorrod
󱢵
.
 IncasesofdisassemblyandreassemblyoftheATjointblock
❽
, the center-to-center distance must be
securedcorrectly.Inaddition,theparallelismofthetwofrontandrearjointblock
❽
must also be se-
cured,withoutfail.Ifthecorrectdistanceandparallelismarelost,thiscanbeacauseofATmalfunction
and normal sewing tension cannot be obtained.
3.Uponthecompletionofallreassemblywork,conrmthatthereisaclosecontactbetweenthethrust
collar
󱢶
andtheATsolenoidunit
󱢳
.Ifanyclearanceisperceived,loosenthetwosetscrews
❾
and
assembletheATsolenoidunit
󱢳
after it has been moved to the left side (in the direction of the arrow
F
).
 * Iftheabove-mentionedcenter-to-centerdistanceisgreatbetweentheATjointblock
❽
, the clear-
ance will be opened wider.
Secure parallelism between plane and plane.
358 mm