Specifications

Y Drive Belt Tensions
Note: This procedure requires the use of a special service tool: the Gates 5M
Tensiometer, available from Melco, part number 992165-01.
1. Remove all table tops and move the Y beam all the way to the rear.
2. Properly attach a Gates 5M Tensiometer to the belt, midway between the beam
and the idler pulley tensioning assembly (see Figure 2-6) and check the tension.
3. The tension scale should read 20 plus or minus 1 with the Gates tensiometer.
4. Adjust as described in the following steps, checking the tension with the
tensiometer frequently until the proper value (20
± 1) is measured.
a) Tighten the belt tension screw at the front of the idler pulley bracket
clockwise to increase the belt tension.
b) Loosen the belt tension screw at the front of the idler pulley bracket
counterclockwise to decrease the belt tension.
5. Repeat the above procedure for all the Y drive belts to ensure that they are
"balanced" (tensioned the same).
6. Reinstall the table tops that were removed earlier.
Y carriage
and beam
Gates 5M
Tensiometer
midway between
the beam and the
idler pulley
belt tension
screw
idler pulley
Figure 2 - 6
Y Drive Belt Tensions 2 - 7
110305-01, Rev A 2. Service Adjustments