Drive Belt Alignment - Acer Wood Runner Manual

Drive Belt Tensioning – Board location Drive Belt Tensioning – ¼" sag

8.3 DRIVE BELT ALIGNMENT

The pulleys must be properly aligned so that the belt tracks correctly on the pulleys. Poor tracking will
damage the belt or pulley flange. This procedure is done from outside the Hazardous Zone (SEE SAFETY
SECTION) while the Gantry is in Auto Cycle mode. Start the Gantry in Auto Cycle mode from the MANUAL
screen after checking that all personnel are clear of the Hazardous Zone. Observe the belt running on the
pulleys to see if it is crowding into one of the side flanges.
A light crowding is acceptable. Do not loosen the two bolts closest to the pulley. Adjust the alignment by
reaching through the window and loosening the two bolts closest to you ¼ turn with a 9/16" wrench.
Between these two bolts are two socket set screws. Tighten (clockwise) each of these set screws ¼ turn if
the belt is crowding the inside (closest to Runway) flange. Loosen the set screws ¼ turn if the belt is
crowding the outside flange. Retighten the 9/16" bolts and watch the belt while the Gantry makes several
cycles. Re-adjust as necessary. Repeat this procedure on the opposite end of the Runway.
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