JUKI KE-2060R - Replacing the CENTER Motor

KE-2050/KE-2060, KE-2050R/2055R/KE-2060R Maintenance Manual
5-5
Rev. 2.00
5-4. Replacing the CENTER Motor
(1) Detach the connector of the motor relay cable.
(2) Loosen the screw  of the motor bracket  to detach the drive
belt C from the motor pulley .
(3) Loosen the motor fixing screw  to detach the motor .
(4) Mount the motor shaft and motor pulley  so that the pulley
end A is aligned with the motor shaft end B. (See Figure 5-4-1.)
(5) When installing a new CENTER motor, reassemble the
components in the order of steps (3) to (1).
(6) Adjust the tension of the drive belt C as described below.
<Procedure>
 Loosen the screw  of the motor bracket C, and move the motor bracket to the left and
right.
 Loosen the motor fixing screw  and move the CENTER motor  up and down.
 Adjust the belt tension as described at steps  and . When adjusting, take care not to
allow contact with other components.
 Measure the tension using a sonic belt tension meter (manufactured by UNITTA) and
adjust it to between 17.6 and 21.6N.
(Weight=2.5, Width=6.0, Span=75) * Span=93 in the case of L size
 After the belt tension has been adjusted, tighten the screws  and  to fix the motor
bracket C and motor, respectively.
Note) Belt (tension) is stretched excessively.
→ Torque of the drive shaft increases.
Note) Belt (tension) is loosened excessively.
→ Teeth on the timing pulley are
skipped. (Noise is produced.)
Figure 5-4-2





Figure 5-4-1