Specifications

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3BUS 208 000 R1301178 Maintenance Procedures
Drive Belt Tension Measurement
Inspect the tension of the upper and lower drive belts. They should be the same.
Perform the belt tension check as follows:
1. Squeeze the handle of the tension gauge and place it on the drive belt making
certain that the pivot arm is centered on the belt during adjustment.
The gauge must be applied to the portion of the carriage drive belt that traverses
the Scanning Platform.
2. Release the handle and read the tension indication on the gauge. The tension
should be in the range specified on the gauge.
3. If the tension is outside of that range, adjust the idler pulley tension adjustment
screws until the tension is proper.
4. Tighten the adjustment lock when finished.
Drive Belt Tension and Tip Adjustment
Refer to Figure 9-2.
Observe the idler pulleys on the Scanning Platform while the sensor heads are
scanning. If the drive belt climbs up or down on the idler pulley, adjust the pulley
tip by completing the following steps:
1. Loosen the tip adjustment lock.
2. Tighten the tip adjustment if the belt tracks to the upper edge of the pulley.
3. Loosen the tip adjustment if the belt tracks to the lower edge of the pulley.
4. Observe the idler pulleys while the sensor heads are scanning. If the drive belt
climbs up or down on the idler pulley, repeat Step 2 or 3.
5. Tighten the tip adjustment lock.