Specifications

Caution: Overtightening the screws in the next step may cause the
belt clamp to be damaged.
8. Place the new belt around the two pulleys. Secure both ends of the belt between
the Y-belt bracket and the belt clamp piece with the two screws and associated
hardware removed in the previous step. Be certain the teeth on the new belt
are positioned in the proper location in the rear pulley to maintain the
parallelism between the X beam and Y carriages.
9. Move the X beam to the rear until it mechanically stops.
10. Rotate the adjusting socket head cap screws in the front approximately 3
revolutions clockwise to take up the slack in the belt and provide some amount
of tension.
11. Refer to the Y drive belt tension adjustment procedure.
Belt Tension Adjustment
To adjust the Y drive belt tension, refer to the following procedure:
NOTE: This procedure requires a specific Melco force gauge (p/n 995586-01), for
proper belt adjustment.
1. If not removed already, remove the channel cover associated with the Y drive belt
being adjusted.
2. While observing the movement of the Y belt on the front pulley, move the beam
forward and backward. The belt will vary somewhat on the surface of the
pulley. This is commonly called belt tracking.
3. Adjust the two socket head cap screws independently at this time to obtain the
least amount of belt tracking when the beam moves forward and backward.
4. When the adjustment in the previous step is complete, move the beam to the
rear until it mechanically stops.
5. Refer to Figure 2-12 and check the Y drive belt tension with the Melco force
gauge (p/n 995586-01) by the following steps.
6. . . . TBD.
7. . . . TBD.
8. . . . TBD.
9. If the tension is not correct, slightly tighten the two belt tensioning socket head
cap screws equally to increase tension on the Y drive belt; or loosen the screws
to reduce the tension.
TBD = To Be Determined (not available at this time)
Y Drive Belt 2 - 15
110279-01, Rev B 2. Service Maintenance (except head and trimmer)