Head Pulley
Adjusters
Head Pulley
Adjustable
Idler
Fixed
Idler
Troughing
Idlers
Tail
Pulley
Tail Pulley Adjusters
(Both Sides)
Figure 5-5. Conveyor Adjustment Components
Conveyor Belts
Proper alignment and tension adjustment of the
conveyor belts is necessary to deliver proper
system operation and achieve maximum life from the
components. Belt tension is necessary periodically
since normal working stress causes the conveyor belts
to stretch. (Figure 5-5)
Ensure all belt guards are in place to
prevent severe injury from contact with turning belts
and pulleys.
If you notice misalignment or conveyor belt slack, adjust
the conveyor belt immediately to prevent premature belt
wear or damage to other components. To check for
slack, examine the return side of the belt running under
the load. Belts with too much slack will bounce enough
to contact the conveyor frame.
Three pulleys in the conveyor group are adjustable:
• Adjustable Idler
• Head Pulley
• Tail Pulley
Make small initial adjustments,
checking the adjustment before making another
adjustment to avoid overshooting the desired setting.
Special care is taken at the Rosco LeeBoy factory to
align the head and tail pulleys to precise alignment.
Therefore, alignment adjustment should be made rst
on the adjustable idler:
1. Tighten the adjustable idler adjuster nut on the side
opposite the direction you want the belt to move.
For example, to move the belt to the left, tighten the
right adjuster nut. (Figure 5-6)
2. If the conveyor belt is still misaligned after adjusting
the idlers, adjust the tail pulleys rst by extending
(move belt away from adjuster bolt) or retracting
(move belt toward the adjuster bolt). The tail pulley
adjusters are very accessible under the receiving
hopper on each side of the machine. Extend both
tail pulley adjusters slowly and evenly just enough to
eliminate any bouncing. DO NOT overtighten.
Tail Pulley Adjuster
Figure 5-6. Tail Pulley Adjuster
3. If the conveyor belt(s) is still misaligned, lift the
conveyor panel on the front of the machine above
the spread hopper to access the head pulley
adjusters. (Figure 5-7) Adjust in the same manner
as Step 2.
5
Maintenance
Rosco CSV Variable Width Chip Spreader 5-9
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