Figure 7.4 :
Chain tensioner, feed hopper
7.5.2 Ball bearings
The rollers in the feed hopper should be without deformations and cracks. Check the bearing clearances
without belt tension. Replace worn bearings.
7.6 ELEVATOR AND SUB CONVEYOR
7.6.1 Conveyor belts and feeder carrier
Sub conveyor and elevator.
The sub conveyor and elevator are of chain type with welded carriers. Check the chain tensioning and look
for uneven wear.
7.6.2 Adjusting the conveyor chains
Same procedure on both chains. Tighten the chain tensioner, until all play is gone. Adjust equally on both
sides, and check that the tracking of the chain is centered. If the wear in the chain links is too large to
achieve proper chain tension, one link can be removed.
Figure 7.5 :
Elevator conveyor chain
7 MAINTENANCE AND MECHANICAL ADJUSTMENTS 59
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