Xerox WorkCentre 5687 Series Service Manual page 1670

ADJ 11.2-120 Motor Drive Belt Tensioning
Purpose
To set the tension of directly or indirectly driven belts that are tensioned by a spring attached to
the motor.
Check
1. The shafts and pulleys are installed and properly located.
2. The drive belt is undamaged and correctly routed.
3. The adjustable motor or tensioning pulley bracket is positioned with fastening screws not
tightened fully.
NOTE: For motors with pivoted brackets, the pivot screw must be fitted and tightened.
4. The tensioning spring is fitted between the bracket and frame locating point.
Adjustment
1. Figure 1 shows a typical arrangement. Press the belt midway between pulleys and check
that the bracket moves in the direction of the spring pull; slacken the bracket screws if
necessary.
2. Release the belt and allow the spring to pull the bracket and tension the drive belt then
tighten the lock and bracket screws.
Repairs/Adjustments
ADJ 11.2-120
NOTE: Check the belt condition and routing if the tension spring is not extended or the
locking screw is at the end of the bracket adjustment slot.
Adjustment slot
Lock screw
Typical spring tensioning arrangement
Figure 1 Drive Belt Tensioning
August 2007
4-650
Drive belt
Pivot Screw
Bracket
Tension spring
WorkCentre 5687 Family