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Grade 8 carriage bolt or hex
head cap screw
Shoulder bolt
6.4 Belt Replacement
1. Locate the belt lacing for a laced conveyor. Stop the conveyor with the lacing on top and at a
convenient place for connecting the new belt (generally next to the infeed tail). For a hot-spliced
belt, it is not necessary to locate the old splice unless the old belt is planned to be reused.
Turn off and lock out the drive before removing guards or changing belt tension.
2. Relax belt tension on the conveying belt by loosening the takeup. See section 5.11.1 for screw
takeup drives or section 5.11.2 for pneumatic takeup drives. Pneumatic takeups will lose tension
when the air supply is locked out.
3. For conveyors with PTO, disconnect the driven conveyors by removing the PTO belt(s).
4. Remove conveying rollers and finger guards as needed to access a section of the old belt.
5. Remove the lacing pin for a laced belt, or cut the old belt if it is hot spliced.
6. Connect the end of the new belt to the end of the old belt. Make sure the final thickness is less
than 1/4". Laced belts may be connected together using the lacing and pin. Hot spliced belts will
need to be taped together.
7. Using the old belt, pull the new belt through the conveyor. Generally, the drive pulley will not turn
freely, so this process may need to be done in stages to get the belt past the drive.
8. See section 5.4 for instructions on joining the new belt, and belt routing information if needed.
9. Reinstall any PTO belt(s), conveying rollers, and guards that were removed.
6.5 Screw Takeup Drive
See Figure 29: General Arrangement, Belt Under Roller AC, Screw Takeup Drive, Sheet 1 of 1 in
Appendix 2: General Arrangement Drawings for exploded views and part numbers.
Turn off and lock out the drive before removing guards or replacing any parts on the
drive module.
6.5.1
Drive Motor Replacement
1. Before removing the existing motor, check motor and gearbox nameplates to verify that the
replacement motor is the correct shaft size, gear ratio, and voltage.
2. Verify that electrical power is not present and is properly locked out, then disconnect the electrical
connections in the motor conduit box. Note the phase rotation for later so the replacement motor
will spin the same direction.
Only qualified electricians should connect or disconnect motor terminals. Incorrect
connection can cause hazardous voltages to be present on the outer case of the motor
or connected equipment, and can damage the motor or VFD.
Published November 2021
Installation and Maintenance Manual: RZPAC
3/8"-16
1/2"-13
M8-1.25
Rev. B
44 ft-lbs
106 ft-lbs
20 ft-lbs
45
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