Flowserve Spring Diaphragm Rotary Actuators Manual de usuario descargar pdf (Pagina 8)

Spring Diaphragm Rotary Actuators FCD VLAIM050-01 – 05/12

 • Thespring(229)isheldinplacebythelimitstop(SeeKit#330

Limit Stop Sub-Assembly), the diaphragm bolting will have little

or no load applied to them.

5. Removetheupperdiaphragmcase(202a)

 • Noticeasthecover(202a)isremoved,thatthepiston(227)and

  diaphragm(225)areheldinpositionbythelimitstop(SeeKit

#330 Limit Stop Sub-Assembly) in the transfer case.

 • Thispistoncanbemovedbyadjustingthelimitstop.

6. Removethediaphragm(225)fromthepiston(227)

 • Peeltheolddiaphragm(225)offthepiston.

 • Noticethatthediaphragm(225)isgluedtothepiston(227).

7. Clean the glue from the piston

 • Cleantheglueoffthepiston(227).

 • CleanthegluefromtheO-ringgrooveintheupperdiaphragm

case (202).

8. Applythegluetothediaphragm(225)

 • ApplyGluetothenewdiaphragm(225).

 • Placethediaphragm(225)ontothepiston(227)androtate

it back and forth several times to evenly distribute the glue over

the surface of the piston. Next, remove the diaphragm.

 • Allowthegluetosetfor2or3minutes.Itwillbecomeverysticky.

 • Placediaphragmbackontothepistonandlineuptheboltholes.

9. Install a New O-ring (224) in upper diaphragm case (202a)

 • InstallanewO-ringinthediaphragmcover.

 • ApplygluetotheO-ringwhileitisintheO-ringgroove.

 • GlueusedisScotch-Grip1022.

10. Install the diaphragm case (202a)

 • Installtheupperdiaphragmcase(202a).

 • Lineuptheboltholes.

11.Installthenuts(350,351)andbolts(334,335)tothediaphragmbox

 • Sincethespring(229)isheldincompressionbythelimitstop

(See Kit #330 Limit Stop Sub-Assembly), this step should be

simple.

 • Installthebolting,positioningthe(3)springcompressionbolts

(334) 120 degrees apart.

 • Itisrecommendedtolubricatethelongspringcompressionbolts

(334).

 • Readjustlimitstopasneeded.

12. Complete

GENERAL NOTES

 • Thediaphragmcanbereplacedbyitselfwhilethediaphragmbox

is mounted to the transfer case, or the whole diaphragm box can

be removed and replaced.

 • Ifaspringsetchangeisdesired,itisrecommendedthatthe

entire diaphragm box be changed out as described in the

  “changingtheairaction”section.

 • Itispossibletochangethespringordiaphragmbyusingthe

long spring compression bolts to uncompress the spring.

WARNING: Spring is under compression.

1. Position the diaphragm box assembly (202) in a vice

 • Removethediaphragmboxassembly(202)asdescribedinthe

  “Changingairaction”section.

2. Removetheshortdiaphragmnuts(351)andbolts(335)rst

 • Youcanuseapressontopoftheupperdiaphragmcase(202a)

to relieve the spring compression.

 • Ifapressisnotavailable,removetheshortdiaphragmnuts(351)

and bolts (334) ﬁrst.

3. Apply a generous amount of lubricant to the (3) long spring

compression bolts (334)

 • Applyagenerousamountoflubricanttothe(3)longspring

compression bolts (334).

 • Turneachnut(350),4or5timesandthenalternatetothenext

bolt and nut. Gradually separating the upper and lower diaphragm

case halves.

4. Remove the upper diaphragm case (202a)

5. Removethediaphragm(225)

6. CompletechangeoutofO-ring(224),diaphragm(225)andspring

(229) (if needed)

 • Followsteps6to11inthesectiontitled“Replacingthe

  Diaphragm,WithoutRemovingtheDiaphragmBox”.

 • Youcannowchangethespringifdesired.

CAUTION: Use caution when compressing the spring.

7. Re-assemble the diaphragm box

 • Re-assemblyofthediaphragmboxissimpliedbyusingapress

to compress the spring and then installing the diaphragm bolting.

 • Ifapressisnotavailable,thenfollowsteps1to7inreverse

order.

WARNING: Use lubricant on the (3) spring compression bolts

(334) prior to compressing spring, to avoid galling.

 • Remembertoapplyagenerousamountoflubricanttothelong

compression bolts prior to compressing the springs with them.

Replacing the Spring or Diaphragm

Air-to-close

Air-to-open

Diaphragm Actuator Orientations

Figure 3

1 2 3 4 5 6 7 8 9 10 11 12

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Flowserve Spring Diaphragm Rotary Actuators Manual de usuario Pagina 8

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