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Series 70 Electric Actuator

Operation and Maintenance Manual

Disassembly and Assembly

Tools required:

See Appendix A for a complete list of basic tools.

NOTE 1: Assembly is the opposite of removal.

NOTE 2: Pictures shown for Housing Size 6 are typical

for all sizes.

Procedure

WARNING

Turn off all power and lock out service panel before

installing 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, first 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

Further disassembly of the unit requires special tools

and procedures, and thus will not be covered in this

manual.

Bray Series 70 Operation And Maintenance Manual

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