Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
24
4.5 Disassembly and Assembly of Model HA2, HA3, or HA4 Actuator
Disassembly Procedure
(a) Direct Action Type
(1) Disconnect the air piping and detach the accessories from the actuator.
(2) Remove the stem connector, pointer and lock nut. (See Fig. 4-19.)
(3) Remove the clamping-bolts (except the pair of eyebolts) of the diaphragm
case.
(4) Loosen evenly and alternately the pair of eyebolts. (The initial setting of the
springs is done by these eyebolts.)
(5) Remove the diaphragm case. Pull out upward the actuator rod together with
the diaphragm.
(6) Take out the springs.
Fig. 4-12 HA2D or HA3D Actuator Fig. 4-13 HA4D Actuator
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