TM 5-3895-374-24-2
3-8-2
Conveyor Head Pulley
Removal, Repair and Replacement See figure 3-52.
This procedure assumes a complete removal, repair and replacement of the assembly. A partial disassembly repair and
replacement is possible. Follow the procedure to the point of removing only those components requiring repair or
replacement.
The disassembly of the head shaft requires that the conveyor drive be removed. See Section 3-8-9. The conveyor belt
would normally be removed during a complete repair and allows for easier disassembly. However, all of the components
can be removed with the conveyor belt in place.
A.
Disassembly
1.
Disconnect and lock out the breaker for the feed conveyor motor.
2.
Support the discharge hood with a hoist or crane and remove the fasteners holding the hood in place. Remove
the hood.
3.
The belt scraper is held on with two fasteners, one on either side of the conveyor. Remove the fasteners and the
belt scraper.
4.
With the conveyor belt removed, support the head pulley/shaft assembly with a sling around the head shaft on
either side of the head pulley. Remove the two bolts in each of the two pillow block bearings. The assembly can
be removed. With the conveyor belt in place, lift the conveyor take up assembly to permit as much slack in the
belt as possible.Install the sling onto the head shaft on either side of the head pulley from one side of the belt.
The bearings fasteners can be removed and the pulley removed taking it out, to the side of the belt and the
conveyor frame.
5.
Loosen the lock collar on the pillow block bearing and remove the bearing from the shaft. Repeat for the other
bearing. The pulley is removed from the shaft by removing the two bushings holding the shaft in the pulley. The
pulley can be removed from the shaft.
6.
Remove the back up bar from the discharge hood by removing the fasteners.
7.
Remove the scraper back up plate from the belt scraper.
B.
Inspection
1.
Inspect the bearings. If the seals are damaged or leak grease or if the bearing does not rotate smoothly, replace
either or both bearings.
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