Amity Technology 2720, Operating Manual

Page: 38 / 95

7 - 9
7.10.2 Replacing Apron Chain
1. Shift to park, disengage the PTO, lower the machine to the ground, relieve hydraulic pressure, stop
the engine, remove the ignition key, and wait for all moving parts to stop before dismounting.
2. Open the left and right access doors.
3. Loosen the jam nuts holding the adjustment rods on the bearing mounting arms.
4. Slide the front bearing mounting arms backward to the loosest position.
5. Rotate the shafts until the splice link is accessible, and then disconnect the chain on both ends of
the link.
6. Remove the apron chain or attach the new chain to the old chain before its removal. Use it to
thread the new chain over the sprockets.
7. Thread a new chain over the sprockets, bringing the ends together.
8. Hook the ends of the chain together.
9. Repeat steps 5 - 8 for each apron chain.
10. Use the adjusting rod to slide the lower apron shaft into position to give the required tension,
making sure the apron chain does not contact the lifter wheels. See previous section for chain ten-
sion.
11. Always measure the dimension between the shafts when tensioning. Keep them equal on the left -
and right - hand sides.
12. When correctly positioned, tighten the jam nuts on the bearing mounting arm adjustment rods.
13. Close the access doors on both sides before starting the machine.