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October 2015

Service Instructions

VA001-196-30 Rev. 1

Section 2: Actuator Disassembly

Actuator Disassembly

2�3 Housing Disassembly

NOTE:

Review Section 2 steps 2.1.1 through 2.1.2 before proceeding with housing disassembly.

2�3�1 Removehexnut(1-80)asfollows:CBB315through725standardhousingstop

screworextendedstop(ES)usestep2.3.1.1.CBB315-M3/M3HWthrough

CBB725-M3/ M3HW use step 2.3.1.2.

2�3�1�1 CBB315through725housingstopscreworextendedstopscrew(ES)

2�3�1�1�1 Loosenandremovehexnut(1-80)andCSKwasher(2-35)from

stop screw (1-70) located in housing (1-10).

2�3�1�1�2 Remove stop screw (1-70) from the end of housing (1-10).

2�3�1�2 CBB315/420/520/525/725-M3 or M3HW

2�3�1�2�1 Remove retainer ring (12-30) and groove pin (12-20) from

optionalhexdrivehuborfromhandwheel(12-10).

2�3�1�2�2 Removeoptionalhexdrivehuborhandwheel(12-10)fromM3

jackscrew (1-70).

2�3�1�2�3 Loosenandremovehexnut(1-80)fromM3jackscrew(1-70).

NOTE:

CBB315, 420, 520, 525, 725-M3 or M3HW models the M3 cannot be removed now. The

M3 used in these models can be removed later in this procedure using steps 2.3.7 or 2.3.8.

Stop screw (1-70) does not require removal from the housing (1-10) unless replacing with a

new ES, stop screw or M3.

2�3�2 Remove both retaining rings (1-60) from torque shaft (1-30). Remove washers (1-

65) from housing.

2�3�3 The following steps may be required before disassembly can continue.

2�3�3�1 If torque shaft (1-30) has any raised burrs or sharp edges they should

be removed.

NOTE:

When removing burrs and sharp edges, remove as little metal as possible.

2�3�3�2 Ifthereisexcessivepaintbuild-upontorqueshaft(1-30)itshouldbe

removed in order to remove the washers.

2�3�4 Remove the torque shaft (1-30) by pushing it out one side of housing (1-10).

2�3�5 Remove yoke key (1-40) and yoke key spring (1-50) from torque shaft (1-30).

2�3�6 Remove yoke (1-20) from housing (1-10).

2�3�7 Actuator models CBB315/415 with a M3 or M3HW mounted in the outboard end

of housing (1-10) remove M3 jackscrew (1-70) from housing (1-10).

Emerson Bettis CBB Series User Manual

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