TM 3-4240-286-30P COLLECTIVE PROTECTION EQUIPMENT AN/TSQ-73

8/14/2019 TM 3-4240-286-30P COLLECTIVE PROTECTION EQUIPMENT AN/TSQ-73

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TM 3-4240-286-30&P

TECHNICAL MANUAL

DIRECT SUPPORT MAINTENANCE MANUAL

(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

COLLECTIVE PROTECTION EQUIPMENT, GUIDED MISSILE AIR

DEFENSE SYSTEM, AN/TSQ-73

CONSISTING OF

ENTRANCE, PROTECTIVE, PRESSURIZED: COLLAPSIBLE, M12

(NSN 4240-01-048-2923);

FILTER UNIT, GAS-PARTICULATE: 200 CFM, 208 V, 400 HZ, M56

(NSN 4240-00-237-0227)

AND

INSTALLATION KIT: CBR, PROTECTIVE EQUIPMENT, AN/TSQ-73, M263(NSN 4240-01-063-7679)

HEADQUARTERS, DEPARTMENT OF THE ARMY

24 AUGUST 1982


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T M 3 - 4 2 4 0 - 2 8 6 - 3 0 &PC 1

CHA NGE

NO. 1

HEADQ UARTERSDEPARTM ENT O F THE ARM Y

WA SHI NGT ON, DC, 2 1 De c e mb e r 1 9 8 9

D I R E C T S U P P OR T MA I N T E N A N CE MA N U A L

F ORC OL L E C T I V E P R OT E C T I ON E QU I P ME N T

GUI DE D MI S S I L E A I R DE F E NS E S Y ST E M, A N/ T S Q- 7 3

1 . T h e p u r p o s e o f t h i s c h a n g e i s t o u p d a t e g u i d a n c e f o r d i s p o s a l , h a n d l i n g , a n ds t o r a g e o f f i l t e r s .

2 . Ne w o r c h a n g e d ma t e r i a l i s i n d i c a t e d b y a v e r t i c a l b a r i n t h e ma r g i n o f t h ep a g e . RP S T L l i s t i n g c h a n g e s a r e i n d i c a t e d b y a n a s t e r i s k t o t h e l e f t o f t h ei t e m n u mb e r c o l u mn a d j a c e n t t o t h e l i n e i t e m.

3 . Re mo v e o l d p a g e s a n d i n s e r t n e w p a g e s a s f o l l o ws :

R e m o v e P a g e s I n s e r t P a g e s

No n e a / ( b b l a n k )B - 1 7 a n d B - 1 8 B - 1 7 a n d B - 1 8

4 . F i l e t h i s c h a n g e s h e e t i n f r o n t o f t h e p u b l i c a t i o n f o r r e f e r e n c e p u r p o s e s .

B y Or d e r o f t h e S e c r e t a r y o f t h e A r my :

C A RL E . V U ON O

Ge n e r a l , Un i t e d S t a t e s Ar myCh i e f o f S t a f f

Of f i c i a l :

WI L L I A M J . ME EHA N I IB r i g a d i e r Ge n e r a l , Un i t e d St a t e s Ar my

T h e Ad j u t a n t G e n e r a l

Di s t r i b u t i o n :

T o b e d i s t r i b u t e d i n a c c o r d a n c e wi t h DA F o r m 1 2 - 2 8 - R, q u a n t i t y r e q u i r e d b l o c k 5 6 ,

T M 3 - 4 2 4 0 - 2 8 6 - 3 0 &P .


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WARNING

HEALTH/ENVIRONMENTAL HAZARD

Filters use ASC Whetlerite Carbon which contains

Chromium VI. Chromium VI is a known carcinogen if inhaled

or swallowed. Damaged or unusable filters are classified

as hazardous waste:

DO NOT throw away damaged or unusable filtersas ordinary trash.

DO turn in damaged or unusable filters to your

hazardous waste management office or Defense

Reutilization and Marketing Office (DRMO).

Filters are completely safe to handle and use if they are

not damaged in such a way that carbon leaks from them.

In unlikely event th t carbon should leak, use protection

such as a dust resplrator to cover nose and mouth and put

carbon in container such as self-sealing plastic bag; turnin to hazardous waste management office or DRMO.

Disposal of hazardous waste is restricted by the Resource

Conservation and Recovery Act as amended (42 U.S.C.A

sec 6901 et seq). Violation of these laws is subject

to severe criminal penalties.

Change 1 a/(b blank)


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T E C H N I C A L MA N U AL HEADQUARTERSDEPARTMENT OF THE ARMY

No . 3 - 4 2 4 0 - 2 8 6 - 3 0 & P WASHINGTON, DC, 24 August 1982

Di r e c t Su p p o r t Ma i n t e n a n c e Ma n u a l( I n c l u d i n g R e p a i r P a r t s A n d S p e c i a l T o o l s L i s t )

COLLECTIVE PROTECTION EQUIPMENT, GUIDED MISSILE AIRDEFENSE SYSTEM, AN/TSG-73

C ON SI S T I N G OF

ENTRANCE, PROTECTIVE, PRESSURIZED: COLLAPSIBLE, M12(NSN 4240-01-048-2923);FILTER UNIT, GAS-PARTICULATE:

200 CFM, 208 V, 400 HZ, M56(NSN 4240-00-237-0227)

ANDINSTALLATION KIT: CBR, PROTECTIVE EQUIPMENT, AN/TSG-73, M283

(NSN 4240-01-063-7679)

Current as of 3 March 1982 for Appendix B.

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

Yo u c a n he l p i mp r o v e t h i s ma n ua l . I f y o u f i n d an y mi s t a k es o r i f y o u k n o w o f a wa y t oi mp r o v e t h e p r o c e d u r e s , p l e a s e l e t u s k n o w. Ma i l y o u r l e t t e r , DA F o r m 2 0 2 8 ( R e c o m-me n d e d Ch a n g e s t o P u b l i c a t i o n s a n d B l a n k F o r ms ) , o r DA Fo r m 2 0 2 8 - 2 l o c a t e d i n t h eb a c k o f t h i s ma n u a l d i r e c t t o : Co mma n d e r , US A r my Ar ma me n t Ma t e r i e l Re a d i n e s sCo mma n d , A TT N: DRSA R- MA S- C, Ab e r d e e n Pr o v i n g Gr o u n d , MD2 1 0 1 O. A r e p l y w i l l b ef u r n i s h e d t o y o u .

CHAPTER 1 I N T ROD UC T I ONS e c t i o n I G e n e r a l I n f o r m a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1

I I E q u i p me n t De s c r i p t i o n a n d D a t a . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2I l l Re p a i r Pa r t s , Sp ec i a l T o o l s , T MDE, a nd Su pp o r t Eq u i p me n t . . . . . . . . . . 1 - 2I v P r i n c i p l e s o f Op e r a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2

Page

I


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CHAPTER

S e c t i o n

APPENDIX

Section

2

I

I I

I l l

A

M A I N T E N A N C E I N S T R U C T I O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1

T r o u b l e s h o o t i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1

Ma i n t e n a n c e P r o c e d u r e s f o r M1 2 P r o t e c t i v e E n t r a n c e . . . . . . . . . . . . . . 2 - 1 3 7

M a i n t e n a n c e P r o c e d u r e s f o r M 5 6 G a s - P a r t i c u l a t e F i l t e r U n i t . . . . . . . . . 2 - 1 4 4

R E F E R E N C E S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 1

B R E P A I R P A R T S A N D S P E C I A L T O O L S L I S T . . . . . . . . . . . . . . . . . . . . . . . B- 1

I

I I

Gr o u p 0 1 0 0

0 2 0 0

0 3 0 0

0 5 0 0S e c t i o n I I I

I v

I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B- 1Re p a i r P a r t s L i s t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 6

P a g e

M1 2 P r o t e c t i v e E n t r a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 7O l l 0 P r o t e c t i v e E n t r a n c e C o n t r o l M o d u l e . . . . . . . . . . . . . . . . . . . . . . . . . . B - 1 1

M5 6 Ga s - Pa r t i c u l a t e Fi l t e r Un i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 1 40 2 1 0 M a i n F a n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 2 10 2 2 0 Ai r f l o w V a l v e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 2 30 2 3 0 P o w e r D i s t r i b u t i o n U n i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 2 50 2 3 1 P o we r D i s t r i b u t i o n P a n e l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 2 9

0 2 4 0 Co mp ar t m e nt C o nt r o l Mo du l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 3 5M2 6 3 I n s t a l l a t i o n K i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 3 9

0 3 1 0 A i r f l o w Va l v e a n d S i l e n c er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 4 10 3 1 1 A i r f l o w Va l v e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 4 3

Bu l k Ma t e r i a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 4 4Sp ec i a l T o o l s L i s t ( No t A p pl i c a bl e ) . . . . . . . . . . . . . . . . . . . . . . . . . .NS N, P a r t N o . i n d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 4 5

APPENDIX

D ILLUSTRATED LIST OF MANUFACTURED ITEMS . . . . . . . . . . . . . . . . . ..D-1

I l l u sF i g u r eB- 1B - 2B - 3B - 4B - 5B - 6B - 7

B - 6B - 9B - 1 0B - 1 1

lNDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..lndex 1

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CHAPTER 1INTRODUCTION

Section I. GENERAL INFORMATION

1-1. SCOPE.

a . T y p e o f Ma n u a / . Di r e c t S u p p o r t Ma i n t e n a n c e ,i n c l u d i n g t h e Re p a i r P a r t s a nd Sp e c i a l T o o l s L i s t .

b . Mo d e l Nu mb e r s a n d E q u i p me n t Na me s .

M1 2 p r o t e c t i v e e n t r a n c e :P r o t e c t i v e e n t r a n c e c o n t r o l mo d u l e

M 5 6 g a s - p a r t i c u l a t e f i l t e r u n i t :Ma i n f a nA i r f l o w v a l v eP o w e r d i s t r i b u t i o n u n i tCo mp a r t me n t c o n t r o l mo d u l e

M 2 6 3 i n s t a l l a t i o n k i t :A i r f l o w v a l v e

c . P ur p o s e o f E q u i p me n t . P r o v i d e s f i l t e r e d a i r

u n d e r p o s i t i v e p r e s s u r e t o f i e l d s h e l t e r s .

1-2. MAINTENANCE FORMS, RECORDS, ANDREPORTS. De p a r t me n t o f t h e Ar my f o r ms a n d p r o c e -d u r e s u s ed f o r e q u i p me n t ma i n t e n a n c e wi l l b e t h o s ep r e s c r i b e d b y T M 3 8 - 7 5 0 , T h e Ar my Ma i n t e n a n c e Ma n -a g e me n t S y s t e m ( T AMMS ) .

1-3. DESTRUCTION OF ARMY MATERIEL TO PRE-VENT ENEMY USE. Re f e r t o T M 4 3 - 0 0 0 2 - 3 1 , De -s t r u c t i o n o f Ch e mi c a l We a p on s a n d De f e n s e Eq u i p -me n t t o P r e v e n t E ne my Us e .

1-4. NOMENCLATURE CROSS-REFERENCE

LIST. T h i s l i s t i n g i n c l u d e s n o m e n c l a t u r e c r o s s -- r e f e r e n c e s u s e d i n t h i s ma n u a l .

C ommon N ame Of f i c i a l N o me n c l a t u r e

Co mp a r t me n t c o n t r o l Co n t r o l mo d u l e , c o mp a r t -mo d u l e ( CCM) me n t

C ommon N ame

D i f f e r e n t i a l p r e s s u r eg a g e

M 5 6 g a s - p a r t i c u l a t e f i l t e ru n i t

M 1 2 p r o t e c t i v e e n t r a n c e

M 2 6 3 i n s t a l l a t i o n k i t

P o w e r c a r d

P r o t e c t i v e e n t r a n c ec o n t r o l mo d u l e ( P ECM)

S wi t c h i n g c a r d

O f f i c i a l N o m e n c l a t u r e

G a g e , d i f f e r e n t i a l , d i a l i n d i -c a t i n g

F i l t e r u n i t , g a s - p a r t i c u l a t e ,M5 6

E n t r a n c e , p r o t e c t i v e , p r e s -s u r i z e d , M1 2

I n s t a l l a t i o n k i t , M 2 6 3

P r i n t e d c i r c u i t b o a r d : p o w e r

C o n t r o l m o d u l e , p r o t e c t i v ee n t r a n c e

P r i n t e d c i r c u i t b o a r d :s w i t c h i n g

1-5. REPORTING EQUIPMENT IMPROVEMENTRECOMMENDATIONS (EIR). If your collective pro-tection equipment needs improvement, let us know.Send us an EIR. You, the user, are the only one who cantell us what you dont like about your equipment. Let usknow why you dont like the design. Tell us why a proce-

dure is hard to perform. Put it on an SF 368 (QualityDeficiency Report). Mail it to us at Commander, USArmy Armament Materiel Readiness Command, ATTN:DRSAR-MAP-A, Aberdeen Proving Ground, MD21010.A reply will be furnished directly to you.

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Section II. EQUIPMENT DESCRIPTION AND DATA

1-6. DESCRIPTK)N AND TABULATED DATA. Re f e rt o T M 3 - 4 2 4 0 - 2 8 6 - 2 0 &P .

Section Ill. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT

1-7. COMMON TOOLS AND EQUIPMENT. F o r 1-8. SPECIAL TOOLS, TMDE, AND SUPPORTa u t h o r i z e d c o mmo n t o o l s a n d e q u i p me n t r e f e r t o t h e E QUI P ME NT . No s p e c i a l t o o l s , T MDE , o r s u p p o r t

Mo d i f i e d Ta b l e o f Or g a n i z a t i o n a nd Eq u i p me n t ( MT OE ) e q u i p me n t a r e r e q u i r e d .a p p l i c a b l e t o y o u r u n i t .1-9. REPAIR PARTS. Re p a i r p a r t s a r e l i s t e d a n di l l u s t r a t e d i n a pp e n d i x B o f t h i s ma n u a l .

Section IV. PRINCIPLES OF OPERATION

1-10. PRESSURE CONTROL SYSTEM.

a . T h e b a s i c f u n c t i o n o f t h e p r e s s u r e c o n t r o l s y s t e mi s t o c o n t r o l t h e a i r p r e s s u r e i n a p r o t e c t e d c o m p a r t m e n tw i t h i n t h e p r e s c r i b e d l i m i t s b y c o n t r o l l i n g t h e o p e n i n g o fa n a i r f l o w v a l v e f r o m t h e p r e s s u r i z e d a i r s u p p l y , t h e f i l t e ru n i t . T h e p r e s c r i b e d l i m i t s a r e 1 . 2 t o 1 . 7 i n c h e s w a t e r

g a g e ( h e r e a f t e r r e f e r r e d t o a s i n . w g ) f o r t h e c o m p a r t -me n t o r c o mp a r t me n t c o n t r o l mo d u l e a nd 0 . 4 t o 0 . 8 i n .w g f o r t h e p r o t e c t i v e e n t r a n c e a n d p r o t e c t i v e e n t r a n c ec o n t r o l mo d u l e . T h e c o n t r o l s y s t e m o p e r a t e s f r o m 2 8v d c p o w e r .

b . T h e c o mp a r t me n t p r e s s u r e i s s e n s e d b y t h ep r e s s u r e t r a n s d u c e r w hi c h p r o v i d e s a n o u t p u t v o l t a g e o f2 v o l t s / i n . w g t o p i n 1 o f t h e s w i t c h i n g c a r d . W h e n t h e a i rp r e s s u r e i n t h e c o mp a r t me n t d r o p s b e l o w t h e d e s i r e dl o w l i m i t , 1 . 2 i n . w g f o r s w i t c h i n g c a r d A 2 o r 0 . 4 i n . w g f o r

s wi t c h i n g c a r d A3 , t h e p r e s s u r e t r a n s d u c e r o u t p u t v o l -t a g e dr o p s b e l o w t h e l o w l i mi t r e f e r e n c e v o l t a g e . A no p e r a t i o n a l a mp l i f i e r ( o p a mp ) o n t h e s wi t c h i n g c a r dc o mp a r e s p r e s s ur e t r a n s d u c e r o u t p u t v o l t a g e t o t h e l o wl i m i t r e f e r e n c e v o l t a g e ( 2 . 6 v o l t s f o r t h e c o m p a r t m e n tc o n t r o l m o d u l e l o w l i m i t s i d e ) p r o v i d e d b y p o t e n t i o m e t e r

R1 1 , r e s i s t o r R 13 a n d t h e v o l t a g e r e f e r e n c e d i o d e VR1a n d mu l t i p l i e s t h e v o l t a g e di f f e r e n c e b y 26 t i me s an dp r o v i d e s t h i s a s t h e o u t p u t v o l t a g e a t T P - D . T h e o p a m po u t p u t v o l t a g e i s a t a l o w p o we r l e v e l o f o n l y a f e wmi l l i a mp s ( mA ) . T he t r a n s i s t o r Q 1 a mp l i f i e s t h e p o we rl e v e l t o a b o u t 5 0 m A w h i l e p r o v i d i n g n o v o l t a g e a m p l i f i -c a t i o n . T h e p o w e r l e v e l i s f u r t h e r a m p l i f i e d b y Q 4 o f t h ep o w e r c a r d A l . T h i s t r a n s i s t o r b r i n g s t h e p o w e r l e v e l u pt o a bo u t 5 0 0 mA t o d r i v e t h e a i r f l o w v a l v e mo t o r .

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Pressure Control System, Switching and Power Card, Interconnection Schematic

c . Di r e c t c u r r e n t p o we r a n d g r o u n d ar e p r o v i d e d a to u t p u t t e r mi n a l s 3 a n d 4 o f t h e p o we r c a r d t o t h er e v e r s i b l e 2 8 v d c mo t o r . A s t h e ou t p u t o f Q4 o n t h ep o w e r c a r d s t a r t s t o r i s e , i t p r o v i d e s c u r r e n t v i a R I O t o

t h e b a s e of Q2 o n t h e p owe r c a r d . Wh e n t h i s h a p pe n s ,Q2 t u r n s o n an d pr o v i d e s a g r o u nd a t t e r mi n a l 4 o f t h ep o we r c a r d wh e ne v e r a v o l t a g e g r e a t e r t h a n a f e w v o l t si s p r o v i d e d a t t e r m i n a l 3 o f t h e p o w e r c a r d . T h e a i r f l o wv a l v e mo t o r i s c o n n e c t e d s u c h t h a t w h e n t h i s h a p p e n st h e a i r f l o w v a l v e m o t o r w i l l s t a r t a n d o p e n t h e v a l v e u n t i lt h e c o mp a r t me n t p r e s s u r e h as r i s e n t o wi t h i n t h e p r e -s c r i b e d l i m i t s .

d . T h e d e s c r i p t i o n s o f a r h a s b e e n o n l y f o r a l o wp r e s s u r e c o n d i t i o n o r l o w l i m i t s i d e . T h e r e i s a n e q u i v a -l e n t h i g h p r e s s u r e o r h i g h l i m i t s i d e c i r c u i t r y w h i c h p r o -v i d e s o p p o s i t e p o l a r i t y v o l t a g e t o t e r m i n a l s 3 a n d 4 o ft h e po we r c a r d a nd h en c e t h e a i r f l o w v a l v e mo t o r . T h i sc i r c u i t r y c o n s i s t s o f U 2 , Q 3 o n t h e s w i t c h i n g c a r d , a n dQ3 a n d Q1 o n t h e p o we r c a r d . Wh e n e v e r o n e p r e s s u r es i d e i s o n , t h e o t h e r s i d e i s o f f . I n t h e d e a d b a n d ( i . e . ,w h e n t h e p r e s s u r e i s w i t h i n t h e p r o p e r l i m i t s ) , b o t h s i d e sa r e o f f . T h e g r e a t e r t h e p r e s s u r e i s o u t s i d e t h e d e a db a n d , t h e g r e a t e r t h e d c v o l t a g e t o t h e a i r f l o w v a l v e

m o t o r . T h e v o l t a g e i n c r e a s e s a t t h e r a t e o f 5 . 1 v o l t s / . 1i n . wg a n d s a t u r a t e s o r r e a c he s a ma x i mu m o f a b ou t 2 5v o l t s w h e n t h e p r e s s u r e i s 0 . 3 5 i n . w g o r m o r e o u t s i d e o ft h e d e a d b a n d .

e . T h e s wi t c h i n g c a r d a l s o c o n t a i n s t h e l o w p r e s -s u r e a l a r m c i r c u i t r y c o n s i s t i n g b a s i c a l l y o f Q 2 , C R 1 ,V R 3 , a n d t h e v o l t a g e d i v i d e r r e s i s t o r s R 8 a n d R 2 5 . T h i sc i r c u i t i s s e t t o f i r e w h e n t h e p r e s s u r e f a l l s b e l o w ap r e s e t l e v e l , 1 . 0 i n . w g f o r t h e c o m p a r t m e n t c o n t r o lmo d u l e a n d 0 . 3 3 i n . w g f o r t h e p r o t e c t i v e en t r a n c e c on -t r o l mo d u l e . Wh e n t h e p r e s s u r e r e a c h e s t h e l e v e l sd e s c r i b e d a b o v e , t h e v o l t a g e a c r o s s t h e f o u r l a y e r d i o d eg o e s d o wn t o a b o ut 1 v o l t a n d a l l o ws b a s e c u r r e n t t of l o w i n t o t h e t r a n s i s t o r Q2 . T h e t r a n s i s t o r i s , t h e r e f o r e , o n a n d p r o v i d e s a g r o u n d a t t e r m i n a l 9 o f t h e s w i t c h i n gc a r d . I n t h e s y s t e m w h e n t h i s g r o u n d i s p r o v i d e d , t h eMA SK l i g h t / h o r n a l a r m o r P E L OW P RE SS URE l i g h tc o m e s o n . T h e c i r c u i t t u r n s o f f w h e n t h e v o l t a g e l e v e l o ft h e l o w l i m i t s i d e f a l l s w i t h i n t h e p r o p e r l i m i t s .

f . T h e c i r c u i t c o n s i s t i n g o f R 1 4 , V R 2 , a n d Q 4 i s as e r i e s v o l t a g e r e g u l a t o r f o r t h e o p a mp s an d t h e p r e s -s u r e t r a n s d u c e r . T h e c i r c u i t l i m i t s t h e v o l t a g e o f t h e s ec o mp o n e n t s t o 2 8 v d c d u r i n g h i g h v o l t a g e t r a n s i e n t s .

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1-11, LOSS OF POWER/PRESSURE WARNING

SYSTEM.

a . T h e l o s s o f p o we r w a r n i n g s y s t e m p r o v i d e s a na l a r m, ma s k l i g h t a n d wa r n i n g ho r n w he n ev e r t h e p owe rs wi t c h on t h e c o mp a r t me n t c o n t r o l mo d ul e i s t u r n e d oni n t h e ab s e nc e o f i n p ut p o we r t o t h e c o mp a r t me n t c o n -t r o l mo d u l e . A n a l a r m i s a l s o p r o v i d e d wh e n p o we r i sl o s t d u r i n g n o r m a l o p e r a t i o n .

b . Wh e n t h e c o mp a r t me n t c o n t r o l mo d u l e p o we r

s wi t c h i s ON a n d t h e po we r i s p r o v i d e d t o t h e mo d ul a rc o l l e c t i v e p r o t e c t i o n e q u i p m e n t , t h e b a t t e r i e s a r ec h ar g e d t h r o u gh n o r ma l p o we r d i s t r i b u t i o n i n t h e c om-p a r t me n t c o n t r o l mo d u l e t h r o u gh c h a r g i n g r e s i s t o r R 8.Wi t h t h e c o mp a r t me n t c o n t r o l mo d u l e p o we r s w i t c h ONa n d a l o s s o f p o w e r , b a t t e r y p o w e r i s p r o v i d e d t o t h e l o s so f p o we r wa r n i n g s y s t e m t h r o u g h t e r mi n a l s 5 a n d 6 o ft h e c o mp a r t me n t c o n t r o l mo d u l e po we r s w i t c h o f t e r mi -n a l s 7 o f A 4 ( p r i n t e d c i r c u i t a s s e m b l y s w i t c h i n ga u x i l i a r y ) . P o w e r i s p r o v i d e d t o t h e w a r n i n g d e v i c e sf r o m t e r m i n a l 8 o f A 4 , D i o d e s A4 CR4 a n d CR5 p r e v e n t

p o we r f e e db a c k i n t o t h e r e s t o f t h e 2 8 v d c po we r s y s -t e m, Di o d e CR3 p r o v i d e s p o we r f o r t h e MA S K i n d i c a t o rp r e s s - t o - t e s t . Di o d e A4 CR6 b l o c k s p o we r t o t h e l o s s o fp o we r wa r n i n g s y s t e m wh e n t h e s y s t e m i s o f f ; h o we v e r ,p r e s s - t o - t e s t p o we r i s b e i n g p r o v i d e d t h r o u g h CR5 .

c . Du r i n g no r ma l o p e r a t i o n , 2 8 v d c p o we r i s p r o v i d e dt h r o u gh t h e c l o s ed c o n t a c t s o f p r e s s u r e s wi t c h S6 a ndd i o d e A4 CR7 t o k e e p A4 Q3 t u r n e d o f f . Wh e n e v e r t h e r ei s a l o s s o f p r e s s u r e o r a l o s s o f p o w e r , 2 8 v d c i sr e m o v e d f r o m t h e b a s e o f A 4 Q 3 a n d b a t t e r y c u r r e n tp r o v i d e d b y A 4 R5 , A4 VR1 , a n d A 4R7 t u r n s A 4 Q3 o n .C u r r e n t p r o v i d e d b y A 4 Q 3 a n d A 4 R 3 i s d i r e c t e d t o t h eb a s e o f A 4 Q2 t u r n i n g A4 Q2 o n . Wh e n A4 Q2 i s o n , ag r o u nd i s p r o v i d ed a t t e r mi n a l s 1 , 2 , a n d 6 o f A4 wh i c ha c t i v a t e s t h e w a r n i n g c i r c u i t .

d . C u r r e n t wi l l b e s u pp l i e d b y A4 Q3 a s l o n g a s t h eb a t t e r y v o l t a g e i s g r e a t e r t h a n 1 6 v o l t s . I n t h e r a n g e o f1 4 - 1 6 v o l t s t h e t r a n s i s t o r A 4 Q 3 w i l l b e t u r n e d o f f b y A 4V R1 t h u s r e mo v i n g b a s e d r i v e f o r A4 Q2 a n d h e nc et u r n i n g o f f t h e w a r n i n g c i r c u i t a n d p r e v e n t i n g d e e p d i s -c h a r g e o f t h e b a t t e r i e s .

1-4

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1-12. OVERALL SYSTEM. Re f e r t o s y s t e m s c h e ma -t i c d i a g r a m b e l o w f o r c o mp o n e n t o p e r a t i o n wi t h o t h e rc o l l e c t i v e p r o t e c t i o n e q u i p m e n t .

Collective Protection System S c h e ma t i c D i a g r a m

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Co l l e c t i v e Pr o t e c t i o n Sy s t e m S c h e ma t i c Di a g r a m ( S h e e t 2 o f 2 )

1-6


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CHAPTER 2MAINTENANCE INSTRUCTIONS

Section I. TROUBLESHOOTING2-1. SCOPE. T h i s s e c t i o n p r o v i d e s i n f o r m a t i o n f o r i s o l a t e m a l f u n c t i o n s a n d p r e s c r i b e t h e r e q u i r e d c o r r e c -l o c a t i n g a n d c o r r e c t i n g m a l f u n c t i o n s i n t h e m o d u l a r t i v e a c t i o n .c o l l e c t i v e p r o t e c t i o n e q u i p m e n t . F l o w c h a r t s a r e u s e d t o 2-2. FLOW CHART PROCEDURES. T h e f o l l o wi n g

d e s c r i b e s t h e u s e o f t h e t r o u b l e s h o o t i n g c h a r t s : -

I N DE X

T R O UB L E S H O OT I N G P R OC E D U RE P a g e

P E CM . . . . . . . . . . . . . . . . . . . .Ma i n F a n . . . . . . . . . . . . . . . . . . . . .A i r f l o w V a l v e . . . . . . . . . . . . . . .P o we r D i s t r i b u t i o n P a n e l . . . . . . . . . . . . .CCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T E S T E QU I P ME N T

Mu l t i me t e r A N/ USM2 2 3 . . . . . . . . . . . . . .

P o w e r S u p p l y 6 1 3 0 - 0 0 - 4 0 8 - 4 9 6 2 ( o r e q u i v ) . . . . . . . .D i f f e r e n t i a l P r e s s u r e Ga g e 6 6 8 5 - O Q- 0 8 7 - 6 3 3 1 . . . . . .Hy p o d e r mi c Sy r i n g e 6 5 1 5 - 0 0 - 7 5 4 - 0 4 1 2 . . . . . . .Ho s e Te e 4 73 0- 0 0 - 0 8 2 - 5 40 2 . . . . . . . . . . . .T u b i n g 4 72 0- 0 0 - 0 5 9 - 5 8 1 9 . . . . . . . . . . . . . . .Re s i s t o r ( 6 8 0 OHM, 2 W) 5 9 0 5 - 0 0 - 2 5 6 - 0 3 9 0 . . . . . .Re s i s t o r ( l OO OHM, 1 0 W) 5 9 0 5 - 0 0 - 7 5 2 - 6 4 6 0 . . . . .

2-1


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page 2-10.

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2-11


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2-3 PECM TROUBLESHOOTING PROCEDURES (Cont).

2-13


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2-3. PECM TROUBLESHOOTING

PROCEDURES (Cont).

2-14


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2-3. PECM TROUBLESHOOTING PROCEDURES

2-15


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2-4. MAIN FAN TROUBLESHOOTING PROCEDURES.

2-32


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2-5. AIRFLOW VALVE TROUBLESHOOTING PROCEDURES.

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p.2-133 p.2-74

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2-8. Scope.

Section II. MAINTENANCE PROCEDURES FOR M12 PROTECTIVE ENTRANCE

TM 3-4240-286-30&P

c . I l l u s t r a t i o n s a r e c o n f i g u r e d t o s h o w a c c e s s t o t h e

a . T h i s s e c t i o n c o n t a i n s r e p a i r p r o c e d u r e s f o r c o m- s p e c i f i c c o mp o n e n t s b e i n g a d d r e s s e d a n d ma y n o t

p o n e n t p a r t s o f t h e M 1 2 p r o t e c t i v e e n t r a n c e .s h ow t h e t r u e p os i t i o n o f t h e i t e m o r i t e ms b e i n g ma i n -

b . D i s a s s e mb l e o n l y a s ne c e s s a r y t o g a i n a c c e s s t o t a i n e d o r d i s a s s emb l e d .

d e s i r e d c o mp o n e n t s . d . I d e n t i f y w i r i n g p r i o r t o u n s o l d e r i n g c o n n e c t i o n t o

s i mp l i f y r e a s s e mb l y .

2-9. PROTECTIVE ENTRANCE CONTROL MODULE - MAINTENANCE INSTRUCTIONS.

This t a s k c o v e r s :a . D i s a s s e mb l y d . Re mo v a l

b . Re p a i r e . I n s t a l l a t i o n

c . Re a s s e mb l y

T o o l s T r o u b l e s h o o t i n g Re f e r e n c e s

E l e c t r o n i c E q u i p me n t T oo l R e f e r t o p a g e 2 - 2 .

K i t T K- 1 0 5 / G ( S C 5 1 8 0 - 9 1 - CL - R0 7 ) Eq u i p me n t Co n d i t i o n

Re f e r e n c e s P E CM r e mo v e d f r o m t h e p r o t e c t i v e e n t r a n c e .

T B SI G 2 2 2

L O CA T I ON I T EM A CT I ON

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2-9. PROTECTIVE ENTRANCE CONTROL MODULE - MAINTENANCE INSTRUCTIONS (Cont).

LOCATION ITEM ACTION

REMOVAL

1 .

2 .

3 .

4 .

Di s a s s e mb l e P ECM ( p a g e 2 - 1 3 7 ) .

Re mo v e t h r e e s c r e ws ( 1 ) a n d wi r e s ( 2 ) f r o m t o g g l es w i t c h ( 3 ) .

R e m o v e n u t ( 4 ) a n d w a s h e r ( 5 ) .

Re mo v e t o g g l e s wi t c h ( 3 ) a n d k e y i n g wa s h e r ( 6 ) .

INSTALLATION

1 .

2 .

3 .

4 .

I n s t a l l k e y i n g w a s h e r ( 6 ) o n t o g g l e s w i t c h ( 3 ) .

I n s e r t t o g g l e s w i t c h i n p a n e l a n d s e c u r e w i t hw a s h e r ( 5 ) a n d n u t ( 4 ) .

A t t a c h w i r e s ( 2 ) t o t o g g l e s w i t c h u s i n g t h r e es c r e w s ( 1 ) . R e f e r t o p a g e 2 - 1 4 2 .

Re a s s e mb l e P E CM ( p a g e 2 - 1 3 7 ) .

REMOVAL

1 .

2 .

3 .

4 .

5 .

Di s a s s e mb l e P ECM

U n s o l d e r w i r e s f r o mi n d i c a t o r l i g h t ( 1 ) .

( p a g e 2 - 1 3 7 ) .

L O W P RE S SU RE s w i t c h /

P r y o u t l a mp mo d u l e ( 2 ) .

Re mo v e t wo s c r e ws ( 3 ) a n d t wo l a mp s ( 4 ) .

Re mo v e s l e e v e ( 5 ) f r o m b a c k o f p a n e l ( 6 ) a n d pullL OW P RE SS URE s wi t c h / i n d i c a t o r l i g h t ( 1 ) f r o mf r o n t o f p a n e l ( 6 ) .

I NS TA L L A TI ON1 .

2 .

3 .

4 .

5 .

I n s e r t L OW P RE S S URE s wi t c h / i n d i c a t o r l i g h t ( 1 ) i np a n e l .

P l a c e s l e e v e ( 5 ) o v e r L OW P RE SS URE s wi t c h /

i n d i c a t o r l i g h t a n d s e c u r e w i t h s c r e w s ( 3 ) . I n s t a l ll a mp s ( 4 ) .

P r e s s l a mp mo d u l e ( 2 ) i n t o L OW P RE SS UREs w i t c h / i n d i c a t o r l i g h t .

Co n n e c t a n d s o l d e r w i r e s t o L OW P RE SS UREs wi t c h / i n d i c a t o r l i g h t . Re f e r t o p a g e 2 - 1 4 2 .

Re a s s e m b l e P E CM ( p a g e 2 - 1 3 7 ) .

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REMOVAL

1 . Di s a s s e mb l e P ECM ( p a g e 2 - 1 3 7 ) .

2 . R e mo v e i n s u l a t i n g t u b i n g a n d u n s o l d e r wi r e s f r o mP U R G E i n d i c a t o r l i g h t ( 1 ) .

3 . U n s c r e w k n u r l e d l e n s ( 2 ) a n d nu t ( 3 ) ,

4 . Re mo v e wa s h e r ( 4 ) a n d P URGE i n d i c a t o r l i g h t ( 1 ) .

5 . Re mo v e l a mp ( 5 ) f r o m P URGE i n d i c a t o r l i g h t .

I NS T AL L A T I ON1 .

2 .

3 .

4 .

5 .

6 .

I n s t a l l l a m p ( 5 ) i n P U R G E i n d i c a t o r l i g h t ( 1 ) .

I n s e r t P U R G E i n d i c a t o r l i g h t i n p a n e l a n d i n s t a l l

w a s h e r ( 4 ) a n d n u t ( 3 ) .I n s t a l l k n u r l e d l e n s ( 2 ) .

P l a c e i n s u l a t i n g t u b i n g o v e r wi r e s .

Co n n e c t a n d s o l d e r wi r e s t o PURGE i n d i c a t o r l i g h t .R e f e r t o p a g e 2 - 1 4 2 .

R e a s s e mb l e P E CM ( p a g e 2 - 1 3 7 ) .

REMOVAL

1 .

2 .

3 .

4 .


Re mo v e t wo s c r e ws ( 1 ) a n d t w o wa s h e r s ( 2 ) f r o mT I ME R s w i t c h ( 3 ) . Re mo v e wi r e s ( 4 ) .

L o o s e n s e t s c r e w a n d r e mo v e k n o b ( 5 ) .

Re mo v e n u t ( 6 ) a n d wa s h e r ( 7 ) f r o m T I ME Rs w i t c h ( 3 ) .

Re mo v e T I ME R s w i t c h ( 3 ) .5 .

I NS T AL L A T I ON1 .

2 .

3 .

4 .

5 .

I n s t a l l T I M E R s w i t c h ( 3 ) i n p a n e l u s i n g w a s h e r ( 7 )a n d n u t ( 6 ) .

P o s i t i o n k n o b ( 5 ) o n s h a f t o f T I ME R s wi t c h wi t hp o i n t e r a t t h e z e r o ma r k o n p an e l .

T i g h t e n s e t s c r e w i n k n o b .

I n s t a l l w i r e l e a d s ( 4 ) o n T I M E R s w i t c h u s i n gw a s h e r s ( 2 ) a n d s c r e w s ( 1 ) . R e f e r t o p a g e 2 - 1 4 2 .


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2-9. Protective ENTRANCE CONTROL MODULE - MAINTENANCE INSTRUCTIONS (Cont).


1 .

2 .

3 .

4 .

5 .


Re mo v e t w o s c r e ws ( 1 ) f r o m t o g g l e s wi t c h ( 2 ) a n d -r e l e a s e w i r e s ( 3 ) .

Re mo v e t h r e e s c r e ws ( 4 ) , n o n me t a l l i c w a s h e r s ( 5 ) ,a n d n u t s ( 6 ) .

Re mo v e o n e s c r e w ( 7 ) , wa s h e r s ( 8 a n d 9 ) ,n u t s ( 1 0 an d 11 ) , a n d wi r e ( 1 2 ) .

Re mo v e d o me l i g h t ( 1 3 ) a n d g a s k e t ( 1 4 ) .

F a b r i c a t e g a s k e t ( f i g D - 1 , a p p D ) .

1 . I n s t a l l g a s k e t ( 1 4 ) a n d d o m e l i g h t ( 1 3 ) i n p a n e l u s i n gt h r e e s c r e w s ( 4 ) , w a s h e r s ( 5 ) a n d n u t s ( 6 ) .

2 . I n s t a l l wi r e l e ad ( 1 2 ) o n o ne s c r e w ( 7 ) a n d s e c ur ew i t h w a s h e r s ( 8 a n d 9 ) a n d n u t s ( 1 O a n d 1 1 ) . I n s t a l lw i r e l e a d s ( 3 ) o n t o g g l e s wi t c h ( 2 ) u s i n g t wos c r e w s ( 1 ) . R e f e r t o p a g e 2 - 1 4 2 .

3 . Re a s s e mb l e P ECM ( p a g e 2 - 1 3 7 ) .

REMOVAL


2 . R e m o v e s c r e w ( 1 ) a n d w a s h e r s ( 2 a n d 3 ) .

3 . L i f t s w i t c h i n g c a r d ( 4 ) s l i g h t l y a n d p u l l f r o m s o c k e t .

I NS T AL L A T I ON

1 . I n s e r t s w i t c h i n g c a r d ( 4 ) i n t o s o c k e t i n h o u s i n g .

2 . S e c u r e s wi t c h i n g c a r d wi t h s c r e w ( 1 ) a n dw a s h e r s ( 2 a n d 3 ) .

3 . Re a s s e mb l e P E CM ( p a g e 2 - 1 3 7 ) .

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2-9. PROTECTIVE ENTRANCE CONTROL MODULE - MAINTENANCE INSTRUCTIONS (Cent).


REMOVAL


2 . Re mo v e s c r e w ( 1 ) a n d wa s h e r s ( 2 a n d 3 ) .

3 . L i f t p o w e r c a r d ( 4 ) s l i g h t l y a n d p u l l f r o m s o c k e t .


1 .

2 .

3 .

I n s e r t p o we r c a r d ( 4 ) i n t o s o c k e t I n ho u s i n g .

S e c u r e p o we r c a r d ( 4 ) wi t h s c r e w ( 1 ) a n dw a s h e r s ( 2 a n d 3 ) .



2 . Re mo v e c o n n ec t o r p l u g ( 1 ) f r o m p r e s s u r e t r a n s -d u c e r ( 2 ) .

3 . R e mo v e t u b i n g ( 3 ) .

4 . R e m o v e t w o s c r e w s ( 4 ) , w a s h e r s ( 5 ) , a n d n u t s ( 6 ) .

5 . R e m o v e p r e s s u r e t r a n s d u c e r ( 2 ) .

F a b r i c a t e r e p l a c eme nt t u b i n g ( 3 ) f r o mNSN 9 3 3 0- 0 1 - 0 7 3 - 1 0 1 1 s t o c k . Cu t t o s a me l e n g t h a st u b i n g b e i n g r e p l a c e d .

1 . P l a c e t r a n s d uc e r ( 2 ) i n h o u s i n g a n d s e c u r e wi t h t w os c r e w s ( 4 ) , w a s h e r s ( 5 ) , a n d n u t s ( 6 ) .

2 . I n s t a l l t u b i n g ( 3 ) .

3 . C o n n e c t p l u g ( 1 ) t o t r a n s d u c e r .

4 . R e a s s e mb l e P E CM ( p a g e 2 - 1 3 7 ) .

2 - 1 4 1


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TM 3-4240-286-30&P

Section Ill. MAINTENANCE PROCEDURE FOR M56 GAS-PARTICULATE FILTER UNIT

2-10. General.

a . T h i s s e c t i o n c o n t a i n s r e p ai r p r o c e d u r e s f o r c o m-

p o n e n t p a r t s o f t h e M5 6 Ga s - p a r t i c u l a t e F i l t e r Un i t ,b . D i s a s s e mb l e on l y a s ne c e s s a r y t o ga i n a c c e s s t o

d e s i r e d c o mp o n e n t s .

c. Illustrations are configured to show access to thespecific components being addressed and may notshow the true position of the item or items being main-tained or disassembled.

2-11. MAIN FAN - MAINTENANCE INSTRUCTIONS.

T hi s t a s k c ov e r s :

a . Re mo v a l c . I n s t a l l a t i o n

b . D i s a s s e mb l y d . Re a s s e mb l y

T r o u b l e s h o o t i n g Re f e r e n c e s R e f e r t o p a g e 2 - 3 2 .

Eq u i p me n t Co n d i t i o n Ma i n f a n r e mo v ed f r o m f i l t e r u n i t .

T oo l s Ge n e r a l me c h a n i c s t o o l k i t SC 5 1 8 0 - 9 0 - CL - N 2 6P u l l e r k i t 5 1 2 0 - 0 0 - 2 8 9 - 9 5 9 7

T o r q u e w r e n c h 5 1 2 0 - 0 0 - 2 4 7 - 2 5 3 6Mi c r o me t e r d e p t h g a g e 5 2 10 - 0 0 - 6 1 9 - 4 0 4 5

A r b o r p r e s s 3 4 4 4 - 0 0 - 2 4 3 - 2 6 5 5( o r e q u i v a l e n t )

Ma t e r i a l s C o a t i n g , a l i p h a t i c

p o l y u r e t h a n e ( i t e m 3 , a p p C )Dr y c l e a n i n g s o l v e n t ( i t e m 4 , a p p C )Gr e a s e ( i t e m 5 , a p p C)

L O CA T I ON I T E M A CT I ON

REMOVAL

1 . L i f t e d g e o f p l a t e ( 1 ) w i t h a s h a r p t o o l .

2 . P ul l p l a t e c o mp l e t e l y o f f t h e mo u n t i n g s u r f a c e .

I NS TA L L AT I ON

1 .

2 .

3 .

4 .

T h o r o u g h l y c l e a n mo u n t i n g s ur f a c e wi t h d r y c l e a n i n gs o l v e n t ( i t e m 4 , a p p C ) . Mo u n t i n g s u r f a c e mu s t b ef r e e o f a l l c o n t a m i n a t i o n s u c h a s o i l , g r e a s e , d i r t , o ra n y f o r e i g n m a t t e r .

A c t i v a t e t h e b a c k o f t h e p l a t e w i t h d r y c l e a n i n g s o l -

v e nt ( i t e m 4 , a p p C ) .M o u n t p l a t e ( 1 ) a n d a p p l y p r e s s u r e t o t h e p l a t e s u r -f a c e .

S p r a y o r b r u s h p l a t e wi t h al i p h a t i c p o l y u r e t h a n ec o a t i n g ( i t e m 3 , a p p C ) .

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2-11. MAIN FAN - MAINTENANCE INSTRUCTIONS (Cont).


Disassemble main fan.

Remove six screws (1) and washers (2).

Remove impeller cover (3) from fan housing (4).

Remove impeller nut (5) and washer (6).

R e m o v e i m p e l l e r ( 8 ) .

Remove woodruff key (7).

Remove shim (9).

Remove four screws (10), bearing retainerplate (11), and bushing (12).

CAUTION

When removing the motor cover (15) fromthe fan housing (4), use care not to pull thestator electrical wires from ground.

8.Remove six screws (13) and washers (14).

9. Carefully remove motor cover (15) from fan hous-ing (4), Slide the motor cover (15) back onto theelectrical cable.

NOTE

Use care not to lose loading springwasher (16), as it will fall free when the motorcover is removed from the fan housing.

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& /

DISASSEMBLY (Cont)

Main fan

CAUTION

Use care not to damage the rotor or nick rotor shaft journals when pressing rotor from bearing.

1 0 .

1 1 .

Us i n g a n a r b o r p r e s s , p r e s s r o t o r ( 1 7 ) f r o m b e a r -i n g ( 1 8 ) a n d ou t o f f a n h o u s i n g ( 4 ) .

P r e s s be a r i n g ( 1 8 ) f r o m f a n h o u s i n g ( 4 ) .

CAUTION

Us e c a r e n o t t o d a ma g e t h e r o t o r o r n i c k s h a f t j o u r n a l s wh e n r e mo v i n g t h e b e a r i n g .

1 2 . Re mo v e b ea r i n g ( 1 9 ) f r o m r o t o r ( 1 7 ) s h a f t u s i n g as t a n d a r d b e a r i n g p u l l e r ,

NOTEU s e c a r e n o t t o l o s e d e f l e c t o r ( 2 0 ) . I t w i l l f a l lf r e e wh e n b e a r i n g i s r e mo v e d .

INSTALLATION

1 . I n s t a l l d e f l e c t o r ( 2 0 ) o n r o t o r s h a f t . P r e s s a n e wb e a r i n g ( 1 9 ) o n t h e r o t o r ( 1 7 ) s h a f t ( u s e a n a r b o rp r e s s ) . M a k e s u r e t h e b e a r i n g i s f l u s h a g a i n s t t h ed e f l e c t o r a n d s h a f t s h o u l d e r .

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L O CA T I ON I T E M A CT I ON

INSTALLATION (Cont)

2 .

3 ,

4 .

REASSEMBLY

1 .

2 .

3 .

4 .

I n s t a l l t h e r o t o r ( 1 7 ) i n t h e f a n h o u s i n g ( 4 ) .

St a nd t h e f a n h ou s i n g o n en d wi t h r o t o r s h a f t s u p -p o r t e d , a n d p r e s s a n e w b e ar i n g ( 1 8 ) o n t h e i n p u te n d o f t h e r o t o r s h a f t , f l u s h a g a i n s t t h e s h a f ts h ou l d e r .

F i l l c a v i t y o f b e a r i n g s ( 1 8 a n d 1 9 ) h a l f f u l l o f g r e a s e( i t e m 5 , a p p C ) .

I n s t a l l l o a d i n g s p r i n g w a s h e r ( 1 6 ) o n t h e e n d o f r o t o rs h a f t a n d p r e s s a g a i n s t t h e b e a r i n g w i t h t h e f i n g e r s .

Po s i t i o n t h e mo t o r c o v e r i n p l a c e o n t h e f a n h o us -i n g ( 4 ) . Wo r k s t a t o r c a b l e t h r o u g h r u bb e r g r o m-me n t ( 2 1 ) t o r e mo v e s l a c k wh i l e p os i t i o n i n g . Se a tb e ar i n g a n d l o a d i n g s p r i n g wa s h er i n mo t o r c o v e r ,

CAUTION

Ma k e s u r e l o a d i n g s p r i n g wa s h e r r e ma i n s i np l a c e o n t h e r o t o r s h a f t a n d b e a r i n g i s f u l l ys e at e d b e f o r e t i g h t e n i n g s c r e ws .

I n s t a l l s i x s c r e ws ( 1 3 ) a n d wa s he r s ( 1 4 ) i n mo t o rc o v e r .

I n s t a l l b e a r i n g r e t a i n e r p l a t e ( 1 1 ) w i t h f o u rs c r e ws ( 1 O) a n d t o r q u e t o 2 0- 2 3 i n c h - p o u nd s ,

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REASSEMBLY (Cont)

Ma i n f a n 5 . C h e c k t h e c o n t o u r f i t b e t w e e n t h e f a n i m p e l l e r a n dt h e i m p e l l e r c o v e r .

DI ME NS I ON A F A N I MP E L L E RF I R ML Y S E A T E D

A GA I N S T S P A CE R .

DI ME NS I ON B F A N I MP E L L E RS E A T E D A GA I N S TI MP E L L E R C OV E R .

2 I N CH D EP T HMI C R OME T E R

6.

7 .

8 .

9 .

1 0 .

I MP E L L E R GA GE DI A ME T E R . ( A D D S HI MSB E T WE E N I MP E L L E R A ND S P A C E R T OOB TA I N 0 . 0 0 7 T O 0 . 0 1 2 I NCH A XI A LC L E A R A NC E B E T WE E N F A N I MP E L L E RA ND I MP E L L E R C OV E R. )

P o s i t i o n t h e f a n h o u s i n g ( 4 ) v e r t i c a l l y w i t h i n p u t e n du p .

I n s t a l l b u s h i n g ( 1 2 ) o n r o t o r s h a f t .

I n s t a l l t h e f a n i m p e l l e r ( 8 ) o n t h e r o t o r s h a f t w i t h o u tt h e w o o d r u f f k e y . D o n o t i n s t a l l s e l f l o c k i n g n u t .

I n s t a l l t h e i m p e l l e r c o v e r ( 3 ) o n t h e f a n h o u s i n g a n ds e c u r e wi t h t wo s c r e ws ( 1 ) a n d t w o wa s h e r s ( 2 ) 1 8 0d e g r e e s a p a r t .

NOTE

T h e f a n i m p e l l e r m u s t b e f i r m l y s e a t e da ga i n s t t h e b u s h i n g o n t h e r o t o r s h a f t i no r d e r t o o b t a i n a n a c c u r a t e r e a d i n g f o rd i me n s i o n A .

Wi t h t h e f a n i mp e l l e r a g a i n s t b u s h i n g , u s e a 2 i n c hd e p t h m i c r o m e t e r w i t h t w o p a r a l l e l b a r s ( 1 / 2 i n c h b y1 i n c h b y 8 i n c he s ) . Me a s u r e t h e d i s t a n c e f r o m t h et o p o f t h e p a r a l l e l b a r s t o t h e m a c h i n e d s u r f a c e o nt h e f a n i mp e l l e r a s s h o wn . Re c o r d a s d i me n s i o n A .

NOTET h e f a n i m p e l l e r m u s t b e f i r m l y s e a t e da g a i n s t t h e i m p e l l e r c o v e r t o o b t a i n a n a c c u -r a t e r e a d i n g f o r d i m e n s i o n B .

P u l l u p o n t h e f a n i m p e l l e r t o s e a t a g a i n s t t h e

i mp e l l e r c o v e r a n d t a k e a s e c o n d me a s u r e me n tu s i n g t h e s a me t e c h n i q u e a s i n s t e p 10 an d r e c o r da s d i me n s i o n B .

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Ma i n F a n 1 2 .E x a mp l e

1 , 1 5 2 I n c h e s ( Di me n s i o n A )- 1 . 0 8 6 i n c h e s ( D i me n s i o n B )

1 3 ,

0.066 I n c h ( D i me n s i o n C )- 0 . 0 1 0 i n c h ( N o mi n a l )

1 4 .

1 5 .

1 6 ,

1 7 ,

1 8 .

1 9 .

2 0 .

2 1 .

2 2 .

S u b t r a c t d i me n s i o n B f r o m d i me n s i o n A as r e -c o r d e d i n s t e p s 10 an d 1 1 , t h e d i f f e r e n c e b e i n gd i me n s i o n C . ( S e e ex a mp l e b e l o w. )

Su b t r a c t a n omi n a l 0 . 0 1 0 i n c h f r o m d i me n s i o n C a n d r e c o r d a s d i me n s i o n D . Di me n s i o n D Is t h er e q u i r e d s h i m t h i c k n e s s f o r s h i m t o o b t a i n 0 . 0 0 7 t o0 . 0 1 2 i n c h a x i a l c l e a r a n c e be t we e n t h e f a n I mp e l l e ra n d t h e i m p e l l e r c o v e r .

Re mo v e i mp e l l e r c o v e r a n d i mp e l l e r .

Pe e l l a mi n a t e d s h i ms ( 9 ) t o r e q u i r e d t h i c k n es s d e -t e r mi n e d b y d i me n s i o n D t o o b t a i n t h e p r o p e r

s p a c i n g .

I n s t a l l s h i ms ( 9 ) o n r o t o r s h a f t .

I n s t a l l w o o d r u f f k e y ( 7 ) i n r o t o r s h a f t a n d i n s t a l l f a ni m p e l l e r ( 8 ) .

I n s t a l l w a s h e r ( 6 ) a n d l o c k n u t ( 5 ) .

T or q u e l o c k nu t ( 5 ) t o 9 5 t o 1 10 i n c h - p o u n ds .

T u r n r o t o r c o u n t e r c l o c k w i s e t o c h e c k t h a t b e a r i n g sa r e f r e e .

Wi t h t h e s t a t o r e l e c t r i c c a b l e p o s i t i o n e d i n t h e 6o c l o c k p o s i t i o n , i n s t a l l t h e i m p e l l e r c o v e r ( 3 ) w i t h

t h e i n s t a l l a t i o n l o c a t i n g h o l e s l o c a t e d i n t h e 3o c l o c k a n d 9 : 3 0 p o s i t i o n s .

I n s t a l l s i x w a s h e r s ( 2 ) a n d s c r e w s ( 1 ) .

L O C A T I ON OFI NS TA L L AT I ONH OL E S ( WI T HS T A T O R C A B L EO N O U T P U T E N DA T 6 O C L OC KP OS I T I ON )

I MP EL L E R COVERV I E WE D F R OMI N PUT E N D

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2-12. AIRFLOW VALVE - MAINTENANCE INSTRUCTIONS.

T hi s t a s k c o v e r s :a . R e mo v a lb . I n s t a l l a t i o n

INITIAL SETUP

T o o l s Eq u i p me n t Co n d i t i o n

E l e c t r o n i c E q u i p me n t T o o l A i r f l o w v a l v e r e mo v e d f r o m f i l t e r u n i t o r a i r f l o w valveKi t T K- 1 0 5 / G ( SC 5 1 8 0 - 9 1 - CL - R0 7 ) r e mo v ed f r o m a i r f l o w v a l v e a n d s i l e n c e r .

R e f e r e n c e s T B SI G 2 2 2

T r o u b l e s h o o t i n g R e f e r t o p a g e

NOTE

P e r f o r m a l l e l e c t r i c a l c o n n e c t i o n s i na c c o r d a n c e wi t h wi r i n g d i a g r a m o n p a g e

R e f e r e n c e s 2 - 1 6 0 .2-33.


REMOVAL/INSTALLATION

REMOVAL

A i r f I o w V a l v e M o t o r w i t h r a d i o n o i s e f i l t e r 1 .

2 .

3 .

4 .

Re mo v e n u t ( 1 ) a n d s c r e w ( 2 ) f r o m GRD 4 t e r mi n a ll u g ( 3 )

T a g a n d u n s o l d e r w i r e s ( 4 a n d 5 ) f r o m F L 2 r a d i on o i s e f i l t e r ( 6 ) .

C u t c a b l e s t r a p ( 7 ) . R e m o v e n u t ( 8 ) , s c r e w ( 9 ) a n dc a b l e s t r a p ( 7 ) .

Re mo v e t wo n u t s ( 1 0 ) a n d s c r e ws ( 1 1 ) .

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2-12. AIRFLOW VALVE - MAINTENANCE INSTRUCTIONS (Cont).


REMOVAL/INSTALLATION (Cont)

A i r f l o w V a l v e Mo t o r w i t h r a d i o n o i s e f i l t e r 5 .

6 .

L o o s e n s e t s c r e w ( 1 2 ) a n d r e m o v e g e a r ( 1 3 ) .

R e m o v e f o u r n u t s ( 1 4 ) a n d s c r e w s ( 1 5 ) .

7 . R e m o v e m o t o r ( 1 6 ) a n d F L 2 r a d i o n o i s e f i l t e r ( 6 ) a s au n i t .

8 . Re mo v e s c r e w ( 1 7 ) , wa s h e r ( 1 8 ) , a n d g r o u n d i n gw i r e ( 1 9 ) .


1 . I n s t a l l g r o u n d i n g w i r e ( 1 9 ) o n m o t o r ( 1 6 ) w i t h w a s h e r( 1 8 ) a n d s c r e w ( 1 7 ) .

2 . I n s t a l l m o t o r ( 1 6 ) i n a i r f l o w v a l v e ( 2 0 ) u s i n g f o u rs c r e w s ( 1 5 ) a n d n u t s ( 1 4 ) .

3 . I n s t a l l g e a r ( 1 3 ) o n s h a f t o f m o t o r ( 1 6 ) . T i g h t e ns e t s c r e w ( 1 2 ) .

4 . I n s t a l l F L 2 r a d i o n o i s e f i l t e r ( 6 ) a n d g r o u n d i n gw i r e ( 1 9 ) i n a i r f l o w v a l v e ( 2 0 ) u s i n g s c r e w s ( 1 1 ) a n d

n u t s ( 1 0 ) .

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2-12. AIRFLOW VALVE - MAINTENANCE INSTRUCTIONS (Cont).


REMOVAL/INSTALLATION (Cont)

A i r f l o w V a l v e M o t o r w i t h r a d i o n o i s e f i l t e r 5 .

6 .

7 .

I n s t a l l s c r e w ( 2 ) , G R D 4 t e r m i n a l l u g ( 3 ) , a n d n u t ( 1 ) .

Ob s e r v i n g t h e wi r i n g d i a g r a

Documents

TM 3-4240-286-30P COLLECTIVE PROTECTION EQUIPMENT AN/TSQ-73