LOFTNESS 60HM, Owner'S Manual And Parts Book

Page: 23 / 50

17 Hydraulic Flail Mower OM
Maintenance
Sheave Removal
NOTE: Refer to parts breakdown “Belt and Sheaves”
on page 29 for illustrated parts listing.
Drive Sheave Removal
1. Disconnect or turn off all power to the flail mower.
Remove the drive belt, following the instructions in “Belt
Removal/Installation” on page 16.
DANGER: Failure to turn off power to the flail
mower before removing sheaves could result
in serious injury or death.
1
2
2. Remove the two screws (1) from the taper lock
bushing of the drive sheave .
3. Insert one screw into the threaded hole (2).
4. Tighten screw until bushing grip is released. (If
excessively tight, lightly hammer face of sheave
using drift pin or sleeve).
NOTE: Never hit sheave directly with hammer.
5. Replace the sheave by cleaning the shaft, bore of
bushing, outside of bushing and hub bore of all oil,
paint and dirt. File away any burrs.
6. Insert bushing into hub. Match the hole pattern, not
threaded holes (each complete hole will be threaded
on one side only).
7. Apply a thread-locking compound to setscrews and
thread into the two opposing holes.
8. Position assembly on shaft and alternately torque
setscrews to 35 ft.-lbs.
9. To increase gripping force, hammer face of bushing
using drift or sleeve.
NOTE: Do not hit bushing directly with hammer.
10. Re-torque screws after hammering.
11. Recheck screw torque after initial run-in, and
periodically thereafter, repeat steps 4, 5 & 6 if loose.
12. Check alignment of the sheaves. Repeat sheave
removal and assembly procedures if necessary.
Rotor Sheave Removal
1. Disconnect or turn off all power to the flail mower.
Remove the drive belt, following the instructions in “Belt
Removal/Installation” on page 16.
DANGER: Failure to turn off power to the flail
mower before removing sheaves could result
in serious injury or death.
1
1. Loosen and remove all mounting bolts (1) on the
rotor sheave bushing.
2. Insert cap screws into all threaded jack screw holes.
3. Loosen the bushing by first tightening the screw
furthest from the bushing saw slot, then, alternately
tighten remaining screws. Keep tightening the
screws in small but equal increments until the
tapered sprocket/sheave and bushing disengage.
CAUTION:
Excessive screw torque may
cause damage to the bushing or sheave.