Twose TS466, Operation Manual

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33
ROTOR REMOVAL & REPLACEMENT
Removal procedure:

With the machine attached to the tractor, hydraulically position the cutting head
vertically with the drive end downwards resting on the ground –
select a firm level
location and ensure the weight of the head is fully rested on the ground.

Switch off tractor engine, remove and pocket the key.

Slacken off and remove the 2 nuts and bolts securing the bearing housing to the flail
head main frame at the non-drive end.

Remove the 4 M12 x 35 setscrews from the drive end (inside shell) - rotor to pulley.

The whole rotor assembly should now be raised vertically a sufficient amount to allow
the drive end location flange to free itself from the locating dowel on the rotor drive
pulley.

With the rotor raised and free of the drive pulley, the drive end of the rotor can be
swung gently out of its drive line position in a downward direction relative to the head.
With drive end of rotor swung towards base of head the rotor can now be gently
lowered to allow non-drive end of rotor, complete with bearing/housing attached, to
drop out of main frame and removed.
Replacement procedure:

Position flail head as described for removal procedure – see above.

Position rotor vertically with the drive flange end downwards and gently swing in the
upper (non-drive end) towards its location position –
this operation is to be carried out
from the base face of the head.

Locate non-drive end of the rotor up through the head end panel – at the same time as
raising and locating the non-drive end of the rotor the lower drive end should be swung
into its drive-line position.

Ensure lower end of rotor (drive flange) is positioned to register with the locating
dowel of the drive pulley. Lower rotor onto dowel to locate with the flange making sure
both faces seat together correctly.

Replace the 4 M12 x 35 setscrews to fix the rotor drive flange to the drive pulley and
tighten fully. The drive end of the rotor is now connected.

The upper end of the rotor (bearing housing) is now free/slack. The nuts and bolts for
the bearing location should now be fully tightened to complete the rotor fixing.

Spin the rotor by hand to ensure free, uninterrupted motion.
NOTE: Rotor mounting bolts should be checked daily to ensure they remain tight.