MacDon R113 - Page 105

OPERATION
NOTE:
For 900 rpm, m ount the larger pulley to the conditioner drive gearbox and the smaller pulley to the input shaft of
the conditioner assembly.
For 600 rpm, mount the smaller pulley to the conditioner drive gearbox, and the larger pulley to the input shaft of
the conditioner assembly.
1. Turn jam nut (A) counterclockwise to unlock
tension adjustment.
2. Turn jam nut (A) and adjuster nut (B) counterclockwise
to fully collapse tensione r sprin g (C) and release the
tension from conditioner drive belt (D).
3. Remove drive belt (D).
Figure 3.111: Drive Belt and Pulleys on Left
Side of Conditioner
4. Measure and record the distance from the shaft end to
the taper lock bushing face (A) on both pulleys.
5. Remove three bolts (B) and insert them into the three
threaded bores.
6. Apply uniform pressure to the taper lock bushing by
slightly tightening each bolt in a circular pattern until
the taper lock bushing comes free.
7. Repeat Step 5., page 93 and Step 6., page 93 on the
second pulley.
8. Swap the pulleys.
Figure 3.112: Drive Belt and Pulleys on Left
Side of Conditioner
147910 93 Revision A