Operation and Maintenance Manual

15
3.4.2 Sprocket Alignment
Misalignment of drive results in unequal tension and extreme edge wear.
Consequently, sprocket alignment should be verified by means of a
straight-edge and shafts checked to assure parallelism. On a long-center
drive, due to the belt's tendency to run against one flange of the drive
sprocket, it is often advisable to offset the driven sprocket slightly to
compensate for this effect.
3.4.3 Belt Handling
On installation, the belt should never be forced or pried over the sprocket
flange. Reduction of center distance usually permits the belt to slide into
the sprocket easily. Otherwise, one or both sprockets must be removed.
3.4.4 Belt Storage
To assure smooth operation and to prevent premature failure, belts in
storage should be protected against sharp bending or creasing. Avoid
subjecting belts to extreme heat, low temperature or high humidity.
3.5 Replacement of Azimuth Motor Assembly
3.5.1 Removal of Azimuth Motor Assembly
Use the following procedure to remove the Azimuth Motor Assembly
(Refer to Figure 3):
a. Rotate the Elevation Axis until it is at the 90 deg. vertical position;
i.e. pointing straight up.