Specifications

7. Place the pulley on the new motor shaft and, before tightening the pulley set
screws, perform the next steps to insure the motor shaft pulley is positioned so
the belt will ride in the middle of the two pulleys.
8. Put the new motor in place in the support bracket and slip the drive belt over the
pulley. Insure the other end of the drive belt remains on the pulley associated
with the z drive mechanism.
9. With the existing hardware, attach the motor to the bracket, but DO NOT tighten
the four socket head cap screws at this time.
10. Remove the motor pulley set screws and apply Loctite 222 or equivalent screw
adhesive, then reinstall the set screws.
11. Position the motor pulley on the motor shaft so the belt will ride squarely on
both pulleys and that the belt will not ride up on the flanges of either pulley.
12. Insure the set screws are in line with the flats of the motor shaft and tighten the
motor pulley set screws.
Z Motor Belt Tensioning
Refer to the following procedure to adjust the belt tension as you secure the motor
to the support bracket.
Note: This procedure requires a Gates 5M Tensiometer (Melco p/n 992165-01) for
proper belt adjustment.
1. Loosen the 4 socket head cap screws securing the Z motor to the motor support
bracket.
2. Place the Gates 5M Tensiometer midway on one side of the belt (see Figure 3-4).
Z Motor socket
head cap screw
(1 of 4)
Z Drive Motor
Gates 5M Tensiometer
positioned midway on the belt
Z Drive Belt
Z motor bracket
Figure 3 - 4
3 - 4 Z Drive Mechanical System
EMT 10/4T Technical Manual Melco Embroidery Systems