19
NOTE:
It is not necessary to follow the procedure described in steps (h) through (k) if a hydraulic press is available
to press the replacement field into the motor housing.
(h) Fabricate two 8" (203mm) guide pins from 3/16" (5mm) metal rod. Taper these pins as indicated in
figure 5-3.
(i) Insert the tapered end of the pins into the threaded holes in the field holder ring as indicated in
figure 5-3.
(j) Set the new field on the motor housing with the guide pins passing through the two mounting holes
in the body of the field as shown in figure 5-3. Be sure that the four wires are in the position shown in
figure 5-3.
(k) Set a length of 3/8" (9.5mm) steel bar stock approximately 5” (127mm) long, or similar object, on
the field as illustrated in figure 5-3.
Drive the field
into the motor housing by firmly and squarely tapping
the bar with a hammer. See figure 5-3. Use caution to avoid cutting or otherwise damaging the wires that
are connected to the field.
(l) Connect the two wires having rings to the motor brush holders, one wire to each brush holder.
(m) Reinstall the field-retaining ring.
Figure 5-3. Model 2 Field Replacement
TROUBLE
POSSIBLE CAUSE
REMEDY
