Drive Pulley Ring And Drive Belt Replacement; Box Drive Belt Tension - 3M -Matic a20 Instructions And Parts List

13-MAINTENANCE AND REPAIRS (continued)
WARNING
•
To reduce the risk associated with
mechanical and electrical hazards:
-
Turn electrical supply off and disconnect
before performing any adjustments,
maintenance or servicing the machine /
taping heads.

13.10 Drive Pulley Ring and Drive Belt Replacement

Drive Pulley Rings
Before installing a new belt, check the orange
plastic drive pulley rings for wear. If torn, broken,
or worn smooth, replace the rings (Figure 13-3).
Figure 13-3
Figure 13-4 Lower Drive Belt Replacement
a20-NA
Box Drive Belt Replacement
Note – 3M recommends the replacement of drive
belts in pairs, especially if belts are unevenly worn.
Replacing Drive Belts
1. Using a 17mm open-end wrench, loosen,
but do not remove the lock nut as shown in
Figure 13-4.
2. Using a 6mm hex wrench, loosen tension screw
until all belt tension is removed as shown in
Figure 13-4.
3. Pull out belt splicing pin.
Tip: The old belt may be used to install the
new belt. Attach the new belt to the old belt
and pull the new belt into the position while
simultaneously removing the old belt.
4. If using the old belt, continue with the next step.
If the old belt cannot be used to install a new
belt, remove the lower cover between the belts).
5. Place new belt over pulleys with laced splice
at top.
6. Insert splicing pin.
Important: Pin must not extend beyond
edge of belt.
7. Adjust belt tension as explained on the
following page and in "Setup and Adjustments-

Box Drive Belt Tension."

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2011 April