BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
7
disassembly and assembly
tOOlS required:
See Appendix A for a complete list of basic tools.
PrOcedure:
WARNING
Turn off all power and lock out service panel before install-
ing or modifying any electrical wiring.
1. Disconnect motor wires from the main terminal strip
(motor neutral, open, and close).
2. Remove the switchplate by unscrewing the seven phillips
head mounting screws. The switchplate should lift out
as an assembly with the camshaft attached.
3. The switchplate can be independently disassembled.
4. To remove the Gearmotor, rst disconnect the motor
leads which run to the capacitor, and unscrew the
mounting screws for Housing Size 6 (two lower, one
upper) for other Housing Sizes (four lower, one upper).
The motor can now be removed vertically out of the
unit. Note: do not misplace the alignment pin.
5. To remove the worm shaft spur gear, remove the spring
pin using a
3
/
32
” punch, then slide the gear off the end
of the worm shaft for Housing Sizes 6 and 12 . Remove
bowed E-clip retainer for Housing Size 30-180.
6. To remove the output drive worm gear, back off both
mechanical travel stops. Remove the retaining ring and
thrust washer, then lift the output drive worm gear out
of its base.
7. The handwheel is held by a spring pin.
CAUTION
8. Further disassembly of the unit requires special tools
and procedures, and thus will not be covered in this
manual.
NOTE 1: Assembly is
the opposite of removal
NOTE 2: Pictures shown
for Housing Size 6 are
typical for all sizes
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