JUKI LK-1910 Engineer's Manual page 139

Adjustment Procedures
1) Remove the motor cover.
2) Loosen setscrew 1 and remove manifold 2.
3) Install solenoid valve 3 and again install manifold 2 and tighten
setscrew 1.
(Caution) When installing the solenoid valve and manifold,
be sure to securely insert bushings 4 so that they
do not fall. In addition, be careful so that there is
no clearance in respective parts since air leakage
occurs from the clearance.
4) Insert plug 5 into the lower joint of solenoid valve 3 and insert
air tube (3 described on p.131) of the needle cooler to the
upper joint A.
5) Insert solenoid valve connector asm. 6 into solenoid valve 3.
6) Insert pin contact 7 of solenoid valve connector asm 6 into
connector (connector marker J79) of the solenoid valve cable
asm.
(Caution) 1. In case of LK-1910 and LK-1920, when inserting
pin contact 7 into the connector, insert "+" side
(red) of solenoid valve connector asm. 6 into
No. 9 and "–" side (black) to No. 10 as shown
in the figure on the left.
2. In case of LK-1930, connect to the connector
connecting No. designated by the memory
switch. (See p.77.)
Results of Improper Adjustment
134
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