JUKI LK-1900B series - Page 27

– 13 –
Procedures of assembling
1. Mount the main shaft
❼
according to "3.-(1) Main shaft connection/disconnection." Assemble the crank
rod unit
󱢵
.
2. Mount the frame while the oscillator
󱢳
and the oscillator arm
󱢷
is passed through the oscillator shaft
❻
.
3. Pass the thrust collar
󱢴
through the oscillator shaft
❻
.Lightlypushtheoscillatorshaft
❻
in the direc-
tion of the arrow C and the thrust collar
󱢴
inthedirectionofthearrowD.Tightenthetwosetscrews
❺
.
(Makesurethattherstscrewtouchesatlyontheoscillatorshaft
❻
.)
4.Fixtheoscillator
󱢳
and the oscillator arm
󱢷
according to "3.-(6) Oscillator gear positioning".
5.Lightlyswingthecrankrodunit
󱢵
withangerinthedirectionofthearrow.Decidethepositioningof
the crank rod unit
󱢵
sothatitstaysinthecenterofswinging.
Tightenthetwosetscrews
❾
andthenxthemsothatthecrankrodunit
󱢵
is not displaced from the
center of swinging.
(Tightentherstscrewrstsothatitcomesincontactatlywiththemainshaft
❼
.Then,tightenthe
second one.)
6. Mount the lengthwise feed motor
❷
and the crosswise feed motor mounting plate
❸
, using the two
setscrews
❶
and four setscrews
󱢶
.
 Referto"3.-(26)AdjustmentofthepositionoftheXfeedmotorandtheYfeedmotor(Adjustmentofthe
backlash of the driving gear)".
(Caution) 1. Try to turn the main shaft
❼
and conrm that there is no torque.
2. In the case of connection/disconnection or positioning of the crank rod unit
󱢵
or po-
sitioning of the oscillator
󱢳
, grease-up treatment is always needed for the specied
places (2 positions) and the gear area E of the oscillator
󱢳
.
3. Actions for the crank rod unit
󱢵
(under-cam
❽
) positioning must be taken without
fail, after doing "3.-(6) Oscillator gear positioning".
Inadequate positioning of the under-cam
❽
and the oscillator
󱢳
can cause of the fric-
tional wear or lock-up.