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Drive and Tillage Rotors
IMPORTANT
Always replace worn, broken or bent Rotor Blades.
After an initial run of 5-10 hours, check the Drive and
Tillage Rotor Assemblies to ensure that on each end of
Rotor Axle the 12-Point Flange Bolts are tight at a full
torque of 90 Ft-Lbs. If not, tighten the 12-Point Flange
Bolts diagonally to 45 Ft-Lbs then tighten to a full torque
of 90 Ft-Lbs. Repeat 90 Ft-Lbs for another 3 to 4 more
12-Point Flange
Bolts,1/2-20 x 2
Rotor Axle
Shaft Step
1.523
Ref
12-Point Flange
Bolts,1/2-20 x 2
Rotor Axle
Shaft Step
1.523
Ref
F-1097-2305
TABLE OF CONTENTS
5-1/4"
REF
Equal
Figure 4-8: Drive Rotor
5-1/4"
Ref
Equal
Figure 4-9: Tillage Rotor
times (less than 10 percent of wrench movement).
Thereafter check Drive and Tillage Rotors every 50-100
hours or annually.
Always clean undesired foreign material that may have
wrapped around the Rotors.
Check Rotors for worn, broken or bent Rotor Blades and
replace per "Rotor Blade Replacement Procedure on
Page 4-8." When replacing Rotor Blades, the distance on
both ends from the Blade to the Rotor Axle Shaft Step
should be equal. See Figures 4-8 and 4-9.
12-Point Flange
Bolts,1/2-20 x 2
7-11/32"
Equal
12-Point Flange
Bolts,1/2-20 x 2
7-11/32"
Ref
Equal
MAINTENANCE
Rotor Axle
Shaft Step
1.776
Ref
Ref
Rotor Axle
Shaft Step
1.776
Ref
4-7
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