Specifications

4. Move the X carriage all the way to the left of the beam until it mechanically stops.
5. Maneuver the pull-end the Melco force gauge (p/n 995586-01) under the upper
loop of the belt and adjacent to the left side of the #2 head. This will position
the force gauge approximately mid-way on the belt (see Figure 2-7).
6. Place a .020 inch feeler blade or equivalent (such as a 6 inchmetal pocket ruler)
on top of the upper belt loop next to the force gauge.
7. Pull up on the force gauge until the feeler blade touches the under side of the
beam cover mounting surface (see Figure 2-7).
8. Read the scale on the gauge while maintaining the situation in the previous step.
The reading should be between 3.5 and 4.5.
9. If the reading on the gauge is not within the specified range, repeat this belt
tension procedure until the reading is within the specified range.
Tighten the drive belt tensioning screw clockwise to increase the belt tension.
Loosen the drive belt tensioning screw counter clockwise to decrease the belt
tension.
10. Tighten the tensioner block mounting screws and replace the beam cover.
place a .020" feeler blade or
equivalent gauge on top of upper
belt loop, in far enough to touch
the bottom of the beam cover
mounting surface
Melco force gauge
(p/n 995586-01)
drive motor
pulley
X carriage rail
drive belt
tensioning
assembly
pulley
X drive belt UPPER LOOP
(position before pulling
with force gauge)
read between 3.5 to 4.5 at this point
when the upper loop of belt is aligned
with the bottom of the beam cover
mounting surface as shown
beam cover mounting
surface
force gauge
under belt
feeler blade
belt
SIDE VIEW
OF X BEAM
beam
extrusion
Figure 2 - 7
X Drive Belt Replacement 2 - 9
110279-01, Rev B 2. Service Maintenance (except head and trimmer)