DALBO FRONTFLEX, Руководство пользователя, Страница: 19 / 22

FRONTFLEX
Side 19
Repairs

Before performing any adjustments, maintenance or repairs on the machinery, al-
ways make sure the packer roller is resting firmly on the ground.

It is strictly forbidden to allow anyone to be underneath FRONTFLEX unless the im-
plement is securely blocked.
Serious injury or death
could result. If the FRONTFLEX
is hitched to the tractor, it is important to set the tractor brakes.

When changing bearings, shafts and rings, the main frame must be securely
blocked by a solid support.
Best results can be achieved by mounting the
FRONTFLEX in the three-point hitch of the tractor, with the FRONTFLEX resting se-
curely on the ground.
Replacing bearings/shafts/rings
Due to normal tolerances of the castings, washers may have been added between
the bearings and the roller rings and also between the lock washer at the end of the
shaft and the outermost ring. It depends on the new rings whether the washers can
be used again or not, as the rings must be tightly adjusted but only to the extent
that the lock washer (see Fig. 7) can be tightened as close as possible to the shaft
end. There must be no air between the lock washer and the end of the shaft since
the lock washer
must
press against the end of the shaft.
If the rings are difficult to pull off the shaft, try using a high pressure cleaner to flush
out rust and soil from out between the rings and the shaft. If there is time, place the
shaft upright in a vertical position, apply a rust releasing agent and let the shaft and
rings stand overnight.
Rings can be so tight that it is necessary to cut through the shaft and then press the
ring off with a hydraulic press. This requires getting a new shaft, as the old shaft
cannot be welded together again. If only one ring is stuck, it will be more economical
to cut through it with an angle grinder and save the shaft.
Crosskill rings
1. Support the packer frame so the rings are just barely touching the ground.
2. Remove the locking bolts and the washer (A, Fig. 18) and pull the rings located
outside the bearing off the shaft.
3. Loosen the set screws in the bearings.
4. Remove the bolts fastening the bearing plates to the main frame and pull the
bearings and the bearing plates off the shaft. If the bearings are defective, re-
move the bearing plates and install new bearings. If the shaft needs replacing,
raise the main frame off the rings so the shaft and the rings are free. Pull the
shaft out of the rings.
Mounting
1. Mount new rings, bearings or shaft. Make sure the shaft ends are of equal length
on each side of the rings. (After installing the bearings, measure the protruding
shaft ends to ensure that they have an equal length.).