Maintenance 27
NOTE:
You must take the chain off the drive motor sprocket or the
conveyor will not move freely. You must be able to move the
conveyor to replace silicone covering on the rollers.
3. Remove old covering, by carefully slitting the covering and then pulling it off.
4. Clean all rollers using steel wool or a wire wheel. Make sure all rollers are
smooth and free of residue and burrs.
5. Fit the new silicone rubber tubing onto each roller and work on by hand at least
½ inch. At the opposite end of the tubing, fit on and secure an air supply hose of
low pressure, maximum pressure 5 lbs. While tubing is slightly expanded by air
pressure, push the tubing onto the roller and work it on to the roller. Be careful to
hold the roller at all time so it does not fly from the air pressure.
6. Replace rollers on conveyor by inserting roller end holes into the extended pins
of the chain. Reconnect drive chain around drive motor sprocket. Adjust tension
on drive chain by retightening the four (4) bolts. Place access-hole cover back
on, and replace idler end caps.
7. Check conveyor chain tension by following the steps explained earlier.
Idler, roller shaft, bearings, or sprockets replacement
Refer to the Roller Silicone Covering Replacement section above to access and remove
rollers as required. Note the location and orientation of sprockets (make a sketch and
note measurements if necessary). Loosen the jam nuts on the tensioning bolts at the
drive end of the conveyor. Remove the four (4) ¼-20 bolts for the bearings. Slide the
shaft left or right and then the shaft and sprockets will come off. Identify and replace any
damaged or worn parts and reassemble in reverse order of disassembly.
Drive shaft, bearings, or sprockets replacement
Refer to the Conveyor belt tension adjustment section above to open up the conveyor
belt. Remove the drive end caps. Disconnect the conveyor belt. Note the location and
orientation of sprockets (make a sketch and note measurements if necessary). Loosen
four (4) set screws on the drive sprockets. Keep the keyway key for the driveshaft and
replace as necessary. Slide the shaft left or right. The shaft sprockets must be adjusted
for position. All sprockets are fastened to the shaft by set screws. Identify and replace
any damaged or worn parts and reassemble in reverse order of disassembly.
Conveyor motor replacement
Shut off the machine and disconnect main power. Remove the drive end cap,
disconnect two (2) electrical wires from the drive motor, and disconnect the motor from
the drive chain by removing four (4) bolts that hold the drive motor. Remove the
sprocket from the old motor and place it on the new drive motor and reassemble parts in
the same as they were disassembled. For electrical connections, refer to the electrical
schematics.
