Vibratory Feeders
9
ARMATURE REPLACEMENT
Refer to the Parts List Drawing and Figs. 4, 5, 6 & 7.
CAUTION: This unit contains Rare Earth Magnets.
Strong magnetic fields are present at assembly.
Prolonged striking may damage the armature to an
extent that it will have to be replaced. If this should
become necessary, order a new armature from the
parts list and begin replacement by following the same
instructions as for coil replacement.
1. Continue by removing in order the bolts securing the
elastomer diaphragm clamp to the body housing.
2. Loosen slightly but do not remove the upper end of
the front tuning spring stacks to the spring bar and
the spring bar to the armature.
3. Loosen the bolts securing the lower end of the spring
stacks to the body housing leaving 1-2 threads in
the body housing. Carefully slide the spring stack
and the armature assembly back to the bolt heads
and remove the bolts from the body housing. (Do not
remove bolts from the spring stacks).
4. Remove the armature and spring stack assembly
by grasping the spring stacks and sliding it through
the opening in the body housing.
NOTE: use a
downward pressure when removing this assembly
to keep the magnetic poles of the armature from
coming in contact with the body housing when going
through the opening.
TABLE 1. TORQUE CHART
46 & 56 Series
Part Bolt Torque
Size
m-kgs ft-lbs
Rear Spring Bolts
M14-2
11.8
85.3
Torsion Spring Bolts
M12-1.75
7.4
53.5
Front Tie Bar Bolts
M14-2
11.8
85.3
Front Spring Bolt
M14-2
11.8
85.3
Electrical Ass’y Bolts
M8-1.25
2.4
17.4
Tray Mounting Bolts
M8-1.25
3.0
22
66 Series
Part Bolt Torque
Size
m-kgs ft-lbs
Rear Spring Bolts
M16-2
17.3
125
Torsion Spring Bolts
M12-1.75
7.4
53.5
Front Tie Bar Bolts
M16-2
17.3
125
Front Spring Bolt
M16-2
17.3
125
Electrical Ass’y Bolts
M8-1.25
2.4
17.4
Tray Mounting Bolt
M12-1.75
7.4
53.5
5. Stand the armature and spring stack assembly on a
non-magnetic surface (I.E. wooden table) as shown
in Figure 9. NOTE: Keep armature away from any
steel parts and surfaces.
6. Loosen the bolts securing the spring stacks to the
armature and remove the spring stacks with the
bolts intact. Retain the washer shaped spacers
located between spring bar and armature. Note
the position of the elastomer diaphragm when
reassembling.
7. Center washer shaped spacers on tapped holes
of the armature. (Hint: using an instant adhesive
will keep the washers and elastomer diaphragm
in position while reassembling.) Position elastomer
diaphragm on the armature as shown in Figure 10.
Reverse the above procedure to reassemble
the unit.
Figure 9
Figure 10
8. Insert armature and diaphram assembly through
opening in front of base casting as shown in
Figure 11.
Figure 11
