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Namco Bandai Games 90500116 User Manual

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Page 55
6-13
Replacing the Stepper Motor
1.
Remove the Drive Assy 
(see 6-10 page 52).
2.
Disconnect the connector of the stepper motor.
3.
Remove the four cap screws (M4x16), with spring washers, and remove the
stepper motor.
4.
Loosen the 2off grub screws (M3x6) fastening the coupling onto the shaft of the
stepper motor.  Remove the coupling.
5.
Refit the coupling onto the shaft of a new stepper motor.
Note: When fastening the coupling, make sure that the shaft does not stick out from
the recessed edge. (As shown below)
6.
Insert the spider (rubber) between the couplings, refit the new stepper motor to
the Drive Assy and connect the connector (6P).
7.
Refit the Drive Assy to the Cabinet Assy.
Grub screw
(M3x6)
Spider (rubber)
Connector
Stepper Motor
Cap screw
(M4x16)
with washer
Apply Loctite 246
Spider
1mm
0.5mm
Coupling for Motor
Motor Shaft
Motor Shaft
Shaft
Coupling for Motor
Coupling for Drive Assy
Spider
(Rubber)
Shaft
Coupling for Drive Assy
Motor Side
Drive Assy Side
Collar
Collar