Challenge Champion 305 XD, Technical Service And Parts Manual

Page: 21 / 138

3.0 Maintenance Guide
21
3.1.9 Backgauge Drive Belt Adjustment
If the backgauge motor runs but the backgauge does not move or slips, the belt may need
adjustment, Figure 15.
Figure 15
To adjust the belt:
1. Turn off the machine, DISCONNECT THE POWER AND LOCK IT OUT! (See Power
Lockout procedure, page 5.)
2. Remove the drive belt cover guard at the rear of the table.
3. Loosen the four socket head screws holding the motor to the mounting plate.
4. Slide the motor down to put more tension on the belt, or lift it up to reduce tension for
removing belt.
5. If belt cannot be tightened, replace with a new belt.
6.
Adjust the tension of the belt so that there is a 1/2”-3/4” (10mm) flex remaining and tighten
the mounting plate socket screws.
7. Replace the belt guard cover.
8. Reconnect the power to the machine.
3.1.10 Knife Bar Gibs
The knife bar gibs are two steel backed UHMW plates on either side of the arch that guide and hold
the knife as it cuts. If adjusted too tight the knife may not come down, or scoring could damage the
gibs and knife bar. If too loose, you could get uneven or inaccurate cuts.
WARNING : Knives are heavy and very sharp (even after use). Severe
lacerations could result. Follow all safety precautions and knife changing instructions from
the Knives section of this manual.