10
B. Collector Ring Brush Replacement.
1. Open cover by removing screws
and lockwashers.
WIRES
COVER
291302B
WING NUT
Figure 4-3. Collector Ring Housing
2. Remove the wing nut on the top
of the collector housing assembly. (See
figure 4-3).
3. Note wiring on top cover before
removing the wires.
4. Remove the four bolts on the
side of the collector housing assembly (see
figure 4-4) and remove the brush assembly.
Note: Press down on brush assembly while
removing the four bolts. Brush assembly is
under spring tension while in position.
BRUSH ASSEMBLY
TERMINAL
BLOCK
TERMINAL
BLOCK
BOLTS(4)
291303C
Figure 4-4. Installation/Removal Brush Assy.
5. Remove lead wire from brush
holder. Remove the worn brush from the
brush holder in the brush holder plate. (See
figure 4-5).
291304B
BRUSH
HOLDER
BRUSH
Figure 4-5. Brush Holder Assy.
6. Insert the replacement brush into
the brush holder. Connect the lead wires to
the brush holder.
C. Collector Ring Removal
.
1. Remove the brush assembly as
described above.
2. Disconnect the three wires from the
terminal block (TB5) inside the rotator
housing and begin feeding wires up into the
siren shaft (see figure 4-2).
3. Federal suggests that the rotator
drive band be loosened, as described in
paragraph 4-4.B., to rotate the siren during
removal of the collector ring bolts.
CAUTION
To prevent damage to the cover
assembly, use a piece of wire to secure
the cover in an open position before
removing the housing’s back panel.
4. Remove the back panel to expose
the plug on the collector housing assembly.
5. Remove the plug.
6.
Manually rotate the siren and
remove each of the four bolts that hold in the
collector rings (see figure 4-7). Access to
these bolts can be gained through the plug
opening.
Summary of Contents for 2001SRNB
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