Drawing_OD_42880.pdf

DEPARTMENT OF THE NAVY

NAVAL SEA SYSTEMS COMMAND

WASHINGTON, D. C. 20362

TORPEDO PARACHUTE RELEASE

MA"!K 32 MOD 1

TORPEDO MARK 46 MODS

NAVSEA OD 42880

CHANGE 5

0627-LP-428-8005

15 SEPTEMBER 1993

PAGE 1 OF 1 PAGE

PUBLISHED BY DIRECTION OF

COMMANDER, NAVAL SEA SYSTEMS COMMAND

After the attached enclosures have been Inserted, record this change on the change record sheet and insert this change guide between the front cover and title page.

The attached enclosures oncorporate changes resulting from NOR 46-5/NUWC--K/5253/03.

Holders of thos manual should incorporate this change in numerical sequence.

Incorporate the attached enclosure as follows:

Remove

Cover T~le

A Foreword Letter of Promulgation ii B 8A TMDEn (11 any)

Insert

Cover Title A Foreword ti

8A TMOER (3 copies)

TORPEDO PARACHUTE RELEASE

MARK 32 MOD 1

MARX 46 TORPEDO HODS

DEPARTMENT OF THE I>.AVY

NAVAL SEA SYSTEMS COMMAND

WASMINGTON, O.C 20362

NAVSEA OD 42880 CHANGE 4

15 JULY 1986

PAGE 1 OF 1 PACE

PUBLISHED BY DIRECTION OP

COMMANDER, NAVAL SEA SYSTEMS COMMAND

After the attached enclosures have been inserted , record this change on the change record sheet and i nsert this change guide be t ween the front cover and title page.

The attached enclosures incorporate changes resulting from NOR 46-5 / NOSC/ 3391 / 5!.

Holders of t his manual should incor pora t e this change in numerical sequence .

Incorporate the attached enclosures as follows:

Remove lnse::-t

Cover Cover Title page Title page A A

Foreword 1 1 ii 1 1 3 3 4 4 5 5 6 6 7 7 8 8

SA

TMDER (3 copies)

NAVAL UNDERWATER SYSTEMS CENTER

Newport, Rhode Island 02840

~·o all holders of IIAVSEA OD 42880 CHA11GE 2 inse:t change;

Approved by ~he Coczaod!ng O~~ice~

/f ~ohn t.. s~ma ~5 il By d:!.~ect~on llAVSEA OD ~2880

CHANGE 3

CODE IDE!I'C 5 371.

2 July 1979

Page ~ of 1 Page(s)

NAVSE.4 OL 42880 CHANGE 2

's changec as ~o1'ovs:

SPEC:;:AL IWIUFAC'!'URING PROCESS

TORP!IDO PARACHU':'F RE24SE

MARK 32 MOD :. , TORPEDO MARl: 46

MODS

~te' the at~ached enclosures have been inserted, insert this CHANGE guide behind the front cover, and en~er CEANGE 3 on ~he CliARGE Rl!X:ORD page.

The purpose of this change is to change a part number and to correc"t and clarify a retaining compound description .

!!OTt: On a changed Pll8e , the por-.:ion of the text affected by t he latest change is indicated by a vertjcal line in the outer ma~&in of the page.

Remove a rod insert t he following pages :

1 . Cover

2. A 3.

l . J.

5. 7 6 . 8

~equests ror additional copies ~f CHANGE 3 to OD 42880 shou:d be submitted to the Co=anctng O!"!"~cer, 1\ave.l Pub1ications and Foms Center, 5BD:-Tabo~ Aven\Je, Phila delphia , PA :.9120 .

NAVAL UNDERWATER SYSTEMS CENTER

Newporl, Rhode Island 02840

NAVSEA OD 1!2880

CRAiiGE 2

CODE IDENT 53712

To all holderc of HAVSEA OJ 42880 CHANGE ~ insert change;

8 June 1978

Approved by the Commanding O~ficer

/ ~- E. Sirmalis By direction

Page 1 of 1 Pag., NAVSEA OD 42880 CHANGE 1 is changed as fol:ows:

SPECIAL MANUFACTURING PROCESS

TORPEDO PARACI:IU'!'E RE::.EASE

MARK 32 ~OD 1 , T03PEDO HARK L6

MODS 0 AND 1

After the attached enclosure has been i nserted, insert this CHANGE guide behind ~he fro~t cover, and enter CHANGE 2 on C3ANGE RECORD page.

The purpose ofthis change is to correct procedures to increase p!n shear s~rength.

NOTE: On a changed page, the portion of the ~ext affec~ed by the latest change is indica~ed by a vert!cal l!ne in the outer margin of the page. Non specific changes are indicated only by a change number.

Remove and insert the follo•~n& page=, excep~ vhe~e indica•ed.

1 . Front Cover 4. Change Record (Insert)

2. A- page (Insert) 5. i

3. Letter o!' Promulga~ion 6. 1 thru 9

Requests for addi~ional copies of CHANGE 2 to OD 42880 should be subffiitted to •he Commanding Officer, Naval Ship Weapon Systems Engineering Station, Code 5740, Port Hueneme, California 93043.

liAVAL UNDEljWATER SYSTEMS CENTER Newport, R. I . 02840

To all holders of NAVORD OD 4288o insert change;

Approve~ oy ~he Comoanding Of!tcer

'Ji: :.. WINNICK B~ dire=tion

NAVORD OD 42800

is changed as f'ollowc:

NAVORD OD 4288o

CHANG!. 1

CODE IDENT 10001

6 September 1972

Page 1 of 1 ~e

SPECIAL MANUFACTURING PROCESS

'l'ORPEDO PARACHUTE RELEASE

~-~ 32 MOD 1, TOR."'EDD MARK

46 MODS 0 and 1

After the attached enclosure has been inserted, insert thia CHANGE guide behind the front cover, and mark on front cover "CHANGE 1 INSERTED" .

The JlU"PPSe of ohi& cba.nge :.s to upda.-ve document •

No:'E: On a changed page, -.:he poni01:: of the tex1:

affected by the latest change is indicated by a vertical l;ne in the outer margin of the page .

Remove and :Cnsert the folla,;:Cng page.

, -· Page 7.

Reques ts for additional copies of CHANGE l to OD 4288o should be submitted to the Commanding Officer, Naval Ordnance Station;Lou~sville, Kentucky 4021~.

NAVSEA OD 42880

0627-LP-428-8000 CAGE 53711

TECHNICAL MANUAL

FOR

TORPEDO PARACHUTE RELEASE

MARK32 MOD 1

TORPEDO MARK 46 MODS

SPECIAL MANUFACTURING PROCESS

DISTRIBUTION STATEMENT D: DI~IB!JTION AUTHORIZED TO DOD AND 000 CONmACTORS ONl.Y; CRITICAL TECHNOLOGY; DATE OF PUBLICATION. OTHER U.S. REQUESTS SHALL BE REFERRED TO NAVAL UNDERSEA WARFARE

CENTER DIVISION (COOE :32), KEYPORT, WA 9834:;...7610.

WARNING: THIS DOCUMENT' CONTAINS TECHNICAL DATA WHOSE EXPORT IS RESTRICTED BY THE ARMS EXPORT CDNTAOLACT (TITLE 22, U.S.C. SEC. 2751 ETSEQ.) OR THE EXPORT ADMINISTRATION ACT OF 1979, AS AMENDED, TITLE 50, U.S.C .. APP 2401, ET SEQ. VIOLATIONS OF THESE EXPORT LAWS ARE SUBJECT TO SEVERE CRIMINAL PENALTIES.

OCSSEMINATE II\ ACCORDANCE WlTH PAOVlSIONS OF OPNAVINST 5510.161, REFERENCE (J)

HANDLING AND DESTRUCTION NOTICE: COMPLY WITH DI~IBLITION STATEMENT AND DESTROY BY ANY METHOD THAT WILL PREVENT DISCLOSURE OF CONTENTS OR RECONSTRUCTION OF THE DOCUMENT.

PUBLISHED BY DIRECTION OF COMMANDER, NAVAL SEA SYSTEMS COMMAND

1 FEBRUARY 1970

CHANGE 5 15 SEPTEMBER 1993

NAVSEA 00 42890

LIST OF EFFECTIVE PAGES

Dates of original and changed pages are:

Origl.Ilal 0 ........... o: Feb 70 Chang e 1 ••• ' . 0. 0 ••• 06 Sep 72 Change 2 ........... 09 Jun 78 Change 3 ......... .. 02 Ju! 79 Change 4 . .. ..... .. . 15 J ul 86 Change 5 ......... .. 15 Sep 93

Total number of pages in t.his publication i s :6 consi sting of t.he following single sided pages:

Page No.

• change No.

Title A . . .•...••.•......•.•.. . .. . .• .. 5 Change Record Foreword ........ .. . . .• i

1 .............. ... .... ... .. .... ~

Page No.

• change No.

6 .............................. ' 7 .......•.. • . . . • ......... 0. • • • • 5

SA

•zero in L~is column indicaces an original page.

NAVSEA TECHNICAL MANUAL CERTIFICATION SHEET 1 O'....l

Cert~ubon Applies to: New Manual D ReviSionD Change0

Applicable TMINS/Pub. No. NAVSEA OD 42880 CHANGE 5

Publication Date (Mo. Da Yr) SEPTEMBER 15, 1993

Reading Grade Level (RGL): NINTH GRADE

Tllle:

TORPEDO PARACHUTE RELEASE MARK 32 MOD 1 TORPEDO MARK 46 MODS

TMCRfTMSR/Specltlcallon No.: TMCR 880046-000

CHANGES AND REVISIONS:

Purpose: To incoroorate NOR 40-5/NUWG-K/5253103 changes.

Equ1oment Alteration Numbers Incorporated:

TMDE"'IACN Numbefs Incorporated:

C...lnUe on ,_se SlOB« add_. as netJdBd

CERTIFICATION STATEMENT

This is to certify that responsible NAVSEA activities have reviewed the above identified document for acquisition compliance, technical coverage, and printing quality. This form is for internal NAVSEA management use only, and does not imply contractual approval or acceptance of the technical manual by the Government, nor relieve the contractor of any responsibility for delivering the technical manual in accordance with the contract requirement.

Authonty Name Signature Organization Code Date

ACOU!sibOn A. BJORGEN (l.IJ .BL • f v- NUWC 3224 .z.ff?:

Technical V.JONES Q .d. ~/ tcR:' NUWC 3221 IZ/IA/93

PnnLng Aeoea5a C.BROUSSAR:::l a~ NUWC 3224 }1~~

NAVSEA 41 60/8 (2-91 )

!UNSEt, OD 42880

CJW;QE RECORD

CHANGE NO. DATE ll<SER'!ED BY !lATE INSERTED

Charu=e Record

FOREWORD

NAVSEA OD 42880 describes che special manu!accuring process for Torpedo Para chute Release Mk 32 Mod 1, DL 1330712.

NAVSEA OD 42880 consists of one volume, organized as follows:

Pa=agraph 1.

Paragraph 2.

Paragraph 3.

Pa=agraph 4.

Int=oduct:ion Applicable Drawings and Documents Hardware and Equipment Required Assembly Procedure

Ships. t raining activicies, supply points, depots. Naval Shipyards and Super v~sors of Shipbui .. ch.ng are requested t.o arrange for the maximum practical use and evaluation of Nl\VSEA technical manuals. ltll errors, omissions, discrep ancies. and suggestions for improvement to Nl\VSEA t echnical manuals shall be forwarded to:

COMMANDER

CODE 5B60

NAVSURPWARCENDIV

~363 M:SSI~ WAY

PORT HUENEME. CA 930~3-4307

on NAVSEA Technical Manual :>eficiency/Evalua~ion Report. form NAVSEA ~160/1.

All feedback comments shall be thoroughly investigated and origina~ors w~ll be advised of action resulting therefrom. Three copies of form NAVSEA 4160/1 are included a~ the end of each separately bou.'ld technical IIISOual S-1/2 x 11 inches or larger. Copies of form NAVSEA 4160/1 may be requis i tioned from Standa:dization Documents Order Desk. Building 4D, 700 Robbins Avenue. Phila delphia, PA 19:::-5094.

ForewDrd CHANGE 5

Paragraph

I

Figure

Table

TABLE OF CONTENTS

IN7RODUCTION . . . •• • • ••• .

APPLICABLE DRAWINGS AND DOCUMENTS

HARDWARE AND EQUIPM~NT REQUIRED

ASSEKBLY PROCEDURE . .• .. •••

LIST OF ILLUSTRATIONS

Title

Housing Alignment for Detent Installa tion Shown from Cover End

Manufactured Har dware Consumable Supplies Standard Hardware • Tools and Fixtures .

;..IST OF TABLES

Ti:le

NAVSEA 00 42880

Page

CHANGE 4 i

NAVSEA 00 42880

SAFETY SUMMA.RY

The history of accidents ohows that in practically every instance where ~~e cause could be dete-~ed, the acciden~s have been avoidable.

therefore, the safety precautJ.ons contained herein. and any safety precaut.1.ons posted by the Command. shall be adhered to and enforced by all activities concerned. Listed belo~ l.S every w-~in~ and caut4on contained in the document and the page on which it appears.

WP.IWING

Do not remove f~ring sears from gas generator . {Page 4) tihRN!NG

Uncontrolled release of the springs can cause inju_~ to personnel.

(Page SJ

CAl!TIQN

Do not contaminate the ends of the incerio~ o! gas gen~ators wi:h adhesive. (Page 4 )

CAIM'IOK

Defective parts shall be removed and l.nspected and replaced • • necessary. (Page SJ

CAUTION

Ext="eme care sha:l be taken to prevent encrance of adhesive, solvent, or mixture of both into gas generator =ir1ng sea:s. More than one insertion cycle can cause excess adhesive buildup. (Page 8)

CAQTION

During cure, position assembly in accordance with note 7-E of Drawing :330712. (Page 8A)

! . I NTRODUCTION

1.~ Scope. This Ordnance Data provides personnel with procedures to assemble and test the Torpedo Parachute Release Mk 32 Mod 1, describes critical tolerances which must be maintained to assure reliable operation , and lists the tools and supplies with which to perform the procedures .

Adherence to the procedures of chis Ordnance Data is mandatory. I

1.3 Description. The torpedo parachute release is an accessory assembly used with the Torpedo Hk 46 Mods during air-launch or rocket-thrown maneuvers . Functionally , the parachute release serves to disengage the parachu:e From the torpedo at water ent=Y· Premature release at parachute deployment is preven:ed by a lock pin, which secures the release weight in ··safe '' position until after parachute deployment . A gas generator, ignited as the parachute opens, releases the lock pin after a nominal one-second delay; the movement of a weight frees the mechanical coupling as the torpedo et\ters the wa t er, thus separating the parachute from the torpedo .

2 . APPLICABLE DRAWlNGS AND DOCUMENTS

2.1 The follo~ing drawings and documents are referenced within this Ordnance Data.

2 . 2 DRAWINGS

NAVORD DL 13307 12

2 . 3 SPECIFICATIONS

MILITARY

o-A-51

MJ:L-S-2247 3

Torpedo Parachute Release Mk 32 Mod I

Acetone Sealing and Retaining Compounds, Thread, Single Component

3 . HARDWARE AND EQUIPMENT REQU I RED

3. 1 Parts Manufactur ed to Drawings . Parts o: the release mechanism manu factured to NAVORD/NAVSEA drawings are listed in table 1 .

3. 2 Consumabl e Supplies . Consumable supplies are listed in table 2 .

3.3 Military Standard Parts . Military standard pa~ts used in the assembly of the release mechanism are listed in table 3.

3 . 4 Tools and Fixtures. Tools and fixtures, other than conventional hand tools, required to assemble the release mechanism are listed in table 4.

Drawings of Special Assembl y (SA) tools are the property of the Naval Ocean I Systems Co=mand and are available upon request. These tools, tool drawings, and all commercial tools referred to in this document are not mandatory and are presented as an aid in the manufacture of the parachute release .

CHANGE 4 I

l.l General. See assembly clra...-ing 133072.2 tor pny:;icw relationship of paxts .

~able 1. Manutactured Hara...-are

NAVORD/HAVSEA Part Ho. Nomenc!ature Qtv PI!'.,.. Assv

2048382 Base 1 2158970 Valve, F.xhaua t Assy 1 2159~2:.. Body 1 2132221 Plate l 2132222 Weight 1 2132223 Cover 1 22.322?4 HousillF, ' - 2:..59315 Pin, Guide , 2301881 Nut 1 2301883 Pin 1 21597<;2 Spacer ...

2301885 Spring, Heli cal Compression 3 2301886 Post 3

22.32521 Stirn 1

2301888 Detent Assy ' -2551270 Closure 1 2068881 Gasket As r equired 2301891 Genera "tor, Gas ?

2301&:;2 Spr:.ne, He:..ica. Co=press~on -' 2452767 Retainer 1 2159739 Piston 1 2::.5974o Screw 2159741 Disc Detent 1 3262083 Pi n , Grooved , H!'ad·esa l

~ - 2 Work Area. Assemble ;;.he pa...'"a.Chuoe rel.ea:;e oc a work bench or •U.:.tabl.e table. Mainte.in cleanJ.iness of t:he work area. Foreign mat ter, i!' &J..:owed to contaminate the assembly, can cause a malfUnction.

4.3 P!-eparat;ion of Harc....-are. Body 2159~ and Weight 2132222 suri'aces coated with solid film lubricant muct be burnished against the mating part~ until t he mating surfac es have a slight glocs.

L.4 tria:. A-"sembly. Prior --:o assembling the paraclrJte release : (1) make certain t:hat ~here is no binding between Pi.Rton 2159739 and bore of Body 2159721.

CflANGJ:; ?

NAVSEA OD '2880

Table 2 . Consumable Suppl>es

Item suggested Product

Re~aining Compound, Speci f i cati on Loctite Sealant, Grade •H• American Sealant Co.

H~tford, Connecticut

Acetone 0-A-51 son~g Adhesive

P=imer. Specifica~ion

S1licon Sealant RTV, ~:L-A-46l06A

Type I

Hart ford . Connectic u t

~ctite P~ime~, Grade •N• I Amer1can Sealant Co .

MS Part No.

MS19060-48l8

MS16625- 1075

AN6227- 7

MS51959- 3:

MS35206-23~

Table 3 . Standard Hardware

Nomenclatu=e

Ball, CR!S 3/8-inch ~~~ter

Ring, r etaining , internal 3/4- inch, s tl, cad plat.e

0-Ring , 0.364- inch ID by 0 . 070 inch screw. machine, !lat c'sunk hd, slotted, CRES 6-32 UNC by 3/ 4-lnch

Screw, machine, pan hd, stl. ca d plate , 6-32 UNC by 3"-inch

Table ( . Tools and Fixtures

Item Part No. or Requirements

Qty Per Assy

Presz Hydraulic or manual arbor press capable of supplying a load i n excess of 1000 pounds

Gage, Force Assembly SA 7087110

Tool, Piston Ass~ly SA 7086697

CHANGE 5 3

Table~ - Tools and Fix~ures {Continued)

I::.eir Par~ No. or Requi:::-ements

Asseobly Aid

Pedes~al, Assembly

Fee:er, Gage {2 re quuedl oven {optional)

SA 7088821

SA 7087213

9 s~raigh~ leaves 0.00~5 ~o 0.015

150 °F Control

4.~.1 Preassembly eperations

4.~.1.1 The !oll~~n~ procedures may be perfo~ed prior to shim thickness selection.

4.4.1.1. 1 Prior to applica~ion of reta~n~n~ compound, apply Primer, I MI~-S-22473, Grade N. to ~eads of three Posts, 230:886 , accor~n~ to manufacturer's instruCtlons. Appl y Reta~nin~ compound, MIL-S-22473 Grade H, to th::-eads of three Pozts 2301886. Screw posts into Plate 2132221 as shown on assembly d:::-a~~ng.

4.4.1 .1.2 Press P~n 3262083 into 0.1875- inch diameter hole in body . Make sure that both ends of the pin are flush with or 0.010 below the bottom of the detent g=oove u: the body. :: necessary, re.-nove pi:l and tr:.m excess material until this !it is obtained.

4.4.1.:.3 C~ean su::-faces of two Ga.s G~erators 2301891 and one Retainer 2452767 uslng a clean cloth sat.uraced >dth Acetone 0-A-51.

4.4.1.1.4 Cut and remove wire rings from firing sears of t.wo Gas Generators 2301891 and :::-emove safery pin.

WABNING

Jo not remove firing sears !:-om gas generators.

CAUTION

Do noc contaminate ~he ends of the interior of gas generators with adhesive.

~.4.1.1.5 Apply Adhesive, RTV, M:L-A-~ 6106A, Type I, ~o Gas Generator 2301891 on end opposi te sear pin . Insert ~as generators, sear end first, into Retainer 2~52767 . Wipe external surfaces to remove excess adhesive.

Cli!!TION

Verify t.ha::. ends of gas oenerat.ors are flush with retainer ends.

Position assembly wi th sear ends up dur:.ng adhesive cure.

CHM"GE 5

4 . 4 . 1 . 1 .6 Cu=e 24 hour s minimum at SO% relat~ve humidity at ambient temper ature .

4 . 4 . 2 Piston Check . Check Pis ton 2159739 as follows:

4 . 4 . 2 . 1 Insert grooved e nd of piston i nto Assembly Aid SA 7088821 .

4 . 4 . 2 . 2 Insert piston and assembly aid into threaded end of body .

Position plston in body, as shown on the assembly drawing (without O- rin&) .

Piston should move freely in itA bore .

I

4 . 4.2 . 3 Install Pin 2301883 until it bottoms against neck of piston . Pin I should be flush or below the face of body .

NOTE

When piston is bottomed the pin should fa ll, by its own weight, flush with or below surface of body . If pin does not fall flush to or below surface of body , check the pis ton pos ition , and dimensions involved .

CAUT!Oii

Defective parts Mhall be r emoved and in spected and replaced if necessary .

4. 4. 3 Shim Thickness . Select t hickness of Shim 2132521 according t o the following procedure .

4 . 4 . 3 . 1 Ploce threaded end of Body 2159721 i n Assembly Fixture SA 708i213 .

4. 4. 3. 2 Slide Weight 2132222 over body as shown on the assembly drawing .

Position and support weight so that the inside cavity of the weight covers the holes in the body .

4 . 4 . 3 . 3 Insert six Balls MS 19060-4818 thr ough holes i n the body , into the 1 inside of cavity of the weight.

4 . 4 . 3 .4 I nser t small- diame t e r end of Valve 2158970 into body a s far as it will go, making sure that transverse gr oove i n end of valve mates wi t h Grooved Pin 3262083 in body .

4. 4. 3.5 Lock valve in pl ace by releasing weight and seating i t aga i nst shoulde~ of body.

4 . 4 . 3 .6 Lift val ve out o( body as far as tt will go . Measure gnp between shoulder of valve ond forward s urface of body usi llg two feeler gages 180 degrees apart .

4. 4 . 3 .7 Remove valve .

CHANGE 4 5

NAVSEA 00 42680

4 . 4 . 3 .8 Surface gr i nd Shim 2132521 to obtain from 0 .002 inch to 0 .005 inch axial play between Body 2159721 and Exhaust Valve 2158970 .

4 .4. 3 .9 lnstall ground shim on Valve 2158970 and reinstall valve in body (see 4 . 4 . 3 . 4), verify that with the shim in place, the weighL will drop freely, seating i:self againsl the shoulder of the Body 2159721 . Clearance between the shimmed valve shoulder and the forward surface of the body shall not exceed 0 .005 inch i n any case .

4 . 5 Preliminary Assembly of Latching Parts . Assemble latching parts t o test releasing action according to the following procedure .

4 . 5 . 1 Install Housing 2132224 over body and weight .

4 .5 . 2 Install Plate 2132221 with posts attached over neck of body and secure wi th three Flat Head Screws MS 51959-31 .

L.5 .3 Set assembly on sui:able device to hold it vertical with plate posts down. Rotate weight , through two 3/4-inch diameter holes in housing to line up macing tapped holes in weight .

4 . 5 . 4 I nsert screwdriver with taped blade into one of the tapped holes in the weight ~uch that the mass of the screwdriver will lever the weight upwards and align the weight cavity with the s:x ball holes in Body 2159721 . Ins t all the six balls .

4 . 5 . 5 Install valve and shim, previously prepared according to paragraphs 4 . 4 .3 .8 and 4 .4. 3.9 , into the body and lower the weight :o lock the assembly.

4 .5 . 6 Screw Guide Pin 2159315 and Detent Assembly 2301888 into weight.

NOTE

The top surfaces of the guide pin and detent assembly should be flush wich or below t he surface contour of the weight .

Do not coat th reads of guide pin or detent assembly at this time.

4 . 6 Releasing Action Test . Test the releasing action of the parts assembled in paragraph 4 . 5 as follows:

4 . 6 . 1 Pick up the assembly and , holding it by the neck of the body while using the other hand as a cup under the valve end , rotate the mechanism to an upright position. The valve and shim should drop into your hand as the weight slides dovn . Reinvert the mechanism to verify tha t the weight is latched into position by the detent assembly .

4. 6 . 2 If the valve did not separate, check for defective parts, dirt, and in particular, recheck thickness of shim, paragraphs 4 . 4 . 3 .6 through 4 . 4 . .3 . 9 .

CHA~GE 4 6

NAVSE:l\ 00 42880

4.6.3 Repeat ~he procedure ot this section (4.5.3 "hrough ,. 6.2) un~il the release mec~sm ~ctions properly.

4.7 Pinal Assembly of Parachute Release.

4. 7 .1 Loosen the three flat head screws in the pla~e to a:lo"• !'o!: detent asse=bly access hole alignment.

4.7.2 Loosen the de tent assembly to allow the weight to re~urn to the unlatched position.

4. 7.3 Apply P!:imer, MIL-S-22473, Grade N, to Flat Head Screw, HS5l959-3~ accord~ng to manufacturer's instr uctions. Tigh:en Spring Base Plate 2132221 with posts attached, using Flat Head Screws MS51959-3l with Retaining Compound, MIL-S-22473, Grade H.

4.7.3.1 Reassemble exhaust valve and release mechanism according to steps

4.5.3 through ,. 5.6.

4.7.4 Install o-RL~g AN6227-7 on Piston 2159739 and lubricate with t!IL-L-4343.

4.7.5 Place oetent Oisc 21597'! ove!" Sc!:ew 2159740 and seat 0.11' diameter of disc on 0 .112 diameter of screw. Apply Pr~mer MIL-S-22473, GradeN, "o threads o: Sc:-e~o· 2159740 according to manufacturer's instructions. Then apply Reta~ning Compound M!L-S-22~73, Grade H to threads o! screw 2159740 and thread into Pis:on 2159739 and tighten Screw 2159740 hand tight mak~ng sure that the detent disc is properly aligned.

(.7.6 Holding Piston ASserr~!y Tool SA 7086697 ve=tical w1th knurled handle down, place Spacer 2159752 on end of tool w1th counter-bore up . Pos~tion piston "'leh de~ent disc and screlo' installed sc!"ew end first on space:-, making sure that detent disc i s bottomed against counter-bore f ace of spacer.

!nvert the pa=a chu:e re:ease assembly and slip the piston and tool vertically into threaded end of body. Position piston in body, as shown on the ess~~ly d:ewing.

,.7.7 Remove Ass embly Tool SA 7086697 by removing plunger and chen cylinder.

4.7.8 Remove Guide Pin 2159315 ~~Detent 2301888.

,.7.9 Rotate body holding weight and housing stationary, until 0.161-inch diameter hole in body is visible through the detent port.

NOTE

Looking forward r otate body 30 degrees clockwise to bring 0.161-incb diameter hole into view.

4.7.10 Install pin in body through aligned ho:es ln body and weight.

NOTE

A mark scribed on exposed surface of body will a id in locating pin hole wnen body is insta:led in weight.

4.7.11 Rotate housing and weight around body, so that body slot is aligned

I

I with proper tapped hole in weight. Apply Primer MIL-S- 22473, Grade N, to I threads of Gu1de Pin 2159315 and Detent Assemb:y 2301888 according to manufacturer's instructions. Coat threads of Guide Pin 2159315 and

CHANGE S 7

Detent ASsemDly 230:888 wi~ reta~ning compound and screw guide pin i n to tapped hole in we1ghc as shown in figure 1. Screw detent assembly inoo second tapped hole. Check that the tops of the detent assemblies are flush or below ~e surface con=our of the weight.

4.7.12 Check to see that body and weight move freely in housing and that ~~ere is no rotation of ~e weight relative to the body.

4.7.12.1 Verify orientation of weight with respect to housing so that Guide ?1n 21593!5 and ~:enc ASsembly 2301888 are v~sible ~ough housing 0 . 75 inch di ameter pores .

4.7.13 Determine i: the pin recains the weight in position. This may be accomp:ished by inserting a small rod or drift t..'l!"ough the 0. 218 d1ame::er access hole in Plate 2132221, and attempting to move the weight forward. The weight should r.>Ove :orwa=d only slightly and then contact the pin.

4.7.14 Place assembly, valve down, in arbor press. Alternately place three RE Springs 230!885 and three ~ Springs 2301892 in position on the plate as shown on the ass~ly draw1ng. Ther e is no posltlor. requ1rement for sprLngs other ~han they alternate right and left.

, .7.15 Slide Base 2048382 over threaded end of body.

NOTE

Or:.ent U>e base so t;hat d>='ee holes ~re aligned wi t h the poets attached to Lhe pl~te. Check that ~e si x springs are pr~erly seated ~n ~he counter-bored holes in ~e base and plate.

4 . 7.16 Place a Force Gage SA 7087110 on the base and, using ~e press, coqpress t..~e spr10gs w:.th a force o~ 1000 +20 - 0 pounds.

WIIRNING

Uncontrolled release of the springs can cause in)~-y to personnel.

I

,.7.17 Apply Primer MlL-S-22473, GradeN, to threads of Body 2132224, I accordi!lg ::o manufaccurer• s inst..."'Uctions. Apply Re::ainin\; Compound MIL-S-22473, Grade H, to threads of the Body 2132224. Screw Nut 2301881 on .

body un::il it is ! :.ngertight against t..~e base. Release the press.

4 . 7.18 Apply Adhesive, RTV, MIL-A-46106A, Type I, to outside diameter of Retainer 2452767, wi~ gas generator s installed, prepared in 4.4.1.1.3 through 4.4.1.1.6 as sh~~ on assembly drawing.

CAYT!ON

Extreme ::a:::-e shall be take.-: to prevent entrance of adhesive, solvent, or mix~ure of both into gas generator flring sears. More than one insertion cycle can cause excess adhesive buildup.

4.7.19 Insert retainer into bore of Body 2159721 and remove excess adhes1ve ~r<>rl assemb~y.

CHANGE 5 8

4. 7.20 Ins~ll Gasket 2068881 as required to eliminate axial play between Closure 255:270 and Retainer 2452767. Install closure over !iring sears o:

ga~ generators. Secure parts in position with Retaining Ring MS16625- 1075.

NOTE

Check that retainlng ring is properly seated in groove o£ body.

Mult~ple gaske~s may be required to assure tight fit of parts .

4. 7.21 Insta:l Cover 2132223 over springs. Secu=e cover w!th three Screws MS35206-232 coated with Retaining Compound MIL- S-22473, Grade H. Screws shoU:d be coated with Primer MIL-S-22,73, Grade N, prior to application of Retaining compound.

CAUTION

During cure, posi~1on assembly ic accordance with note 7-E of Draw1ng 1330712.

4.7.22 CUre 24 hours min~mum at SO% relative hum~dity at ambient temperature.

~.i.23 Stacp wi~~ 3lack Ink, ~L-I-43553, "10001-:330712" ~~d assembly •seri al NUmber" 1n the locatlon shown on draw~ng in 0 . 125 inch high c~racters per MIL-STD-130. Cover with clear lacquer per TT- L-50.

8A