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CONAIR
MARTIN
05-15-96 79 16
7.3 Disassembling/assembling the screw
7.3.1 Disassembling
• Release the cover on the bearing
housing.
• Straighten the locking lug on the
folding washer and loosen the KM-
nut on the clamping ring.
• Tap the KM-nut so that the
clamping ring releases from the
shaft.
• Lift away the end cover and place an extractor (1) there.
• Screw in the screw (2), which should reach at least 15 mm in the thread in the
granulator screw.
• Alternately tighten the lifting screws (3) so that the whole time the extractor is
parallel with the end of the cutter housing. To reduce the pulling force, pressure
oil can be used as described below.
Disassembling the screw using pressure oil
In the screw shaft close to the worm gear unit there is a plugged
hole for connecting to a pressure-oil pump, for example a separate
pump to a hydraulic jack. In this way, oil is pumped into the
shrinkage fit via an oil duct, which means that considerably less
force is required to pull the screw from the gear.
7.3.2 Assembling
Before assembling the screw, the shaft and hole should be dry and clean. The shaft is
sprayed with Molykote anti-slipping lacqueur.
• Place two 0.2 mm feeler gauges together between
the seal-ring and the cutter housing so that the
distance between these is 0.4 mm.
• Heat the screw shaft to 225
0
C and place it on the
gear shaft.
• Cool the screw shaft with cutting fluid until it has
cooled down to under 100
0
C.
• Release the feeler gauge and fit the end cover.
• The ball bearing is locked in the middle of the
bearing housing in axially in such a way that the
bearing can take up the axial change as a
consequence of the generation of heat in the
granulator.
• The bearing is locked on the clamping ring by a KM-nut, which is locked with
the folding washer.