PS Magazine Issue 225 1971 Series [225 ed.]

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Citation preview

Issue No. 225 1971 S e rre, August

IN THIS ISSUE GROUND MO BILITY

2-19, 26.27

DriverI'M

2-6 NoPolish,Please! 19

M715Rubber Bumpers

18 M551

~~~t.~h~C:°ft!op 8-~ ~~~kC~y~~;~li~gS Engine Air Cleaners 10-17 Brakes

r.::IIIiiIli.~"

19 26 Ml13AIOilfiller 26 27 ....______-..J

FIREPOWER

28-36

Shi llelagh 28·29 .38.CaIP istoI 3D-31 HawkNotes 32·36

AIR MOBILITY

DISTINGUISH ED BY: Extreme confidence. Scorns review of TM and LO procedures. Apparent knowledge of wide range of equipment often leads the unwary to " buy" his short-cut solutions. Despite youth, wears " air" of having " grown up" with all models of items - from A-I to NAME: Alvin " Ambi" Dexter,ii!r-=--"'-=---'"-"'f" alias "Wire 'n' wra p it," " Tie-and-tacweld," or " Any-tji,-_ _==:::ili:=;::=>"1 01' screw' lI do." Never llllr--'llll/~... _mmlL stumped by any gismo. Wades in with " Nothin ' to it , '''''''"'''"d Ie' me see inside 'er! " Some-" ....____...:3:-~ times called " Fix·Fingers."

"id"""-

Z-13.

45.57

~~eI4oi~3 52-53, ~~l~ ~J.~ ~ Commercial Oils 48-49 OH·6A 56 CH-47 50-51 Avionics Cable Savers 57 Bird Tire Gage 53 C.rgoSling 57

COMMUNICATIONS

~~~=4"'"

58-63

Shelter Care 58·60 AN/GRA-4 ANJMPO-4A 60 Antenna Thread Lube lA-I/PT 62·63

COMBAT SUPPORT Protective Mask 64071 M320TC rane Heavy EQuipment Tips 72-74 DA2765 HD16M7ractor 15 SB7()O.2D Cancellation Word . 75 Pll Supply 17, 18,26, 27,36, 511,51 New PUblic;~ioS:; 60, 61, 68, -71 & 7769

61 61

76 76 77 711

Un of funds for ,rlnUnl of this publicI'

tlon has bun apprued ~y HudqUJrters, Dep, rtment of the Army, 22 J,nuuy 1971 . DISTRIBUTION: In accordance with rt· quirements submitted on DA Form 12-4.

..---'.,

''''~.c~ t -''~.JIc--_"cc "

{JSM~, tf)t»I l:~,I:'i

1I 0f:2f

TEARS DOWN COMPONENTS FOR A LOOK-SEE: Says the Maintenance allocation chart (MAC) is for short-timers with lackaknowhow. ADJUSTS EVERYTHING IN SIGHT:

I ss u e

No ". 22 5 1971 Se r ies Augu st

IN THIS ISSUE GROUND MOBILITY Driver PM

2-19, 26-27

2·6 No Polish, Please!

J Stencil Markings

Tie-down Rope

~~;~~~h:~~ ~:~ers 1~~ Ta~~~~~raUliC M71SRubber

MU3Al Oil Filter

Bumpers

18 M551

FIREPOWER

19 19

26 21i

28-36

Shillelagh 28·29 .38·CaIPistoI 3G-31 Hawk Notes 32·36

AIR MOBILITY

DISTINGUISHED BY: Extreme can· fidence. Scorns review of TM and LO procedures. Apparent knowl· edge of wide range of equipment often leads the unwary to "buy" his short·cut solutions. Despite youth, wears "air" of having "grown up" with all models of items - from A·I to

Z·l3. ARMED

~Ae{408~~35z.53·~U~ ~v~~ 48-49 0H.fiA

45·57

•

~ ~_ -.- ~ _-

Commercial Oils

CH47 Bird Tire Gage

r.,iliiillilil!lllJ~

27 ............;.._ _

56

~ ."

50·51 Avion ics Cable Savers 57 53 Cargo$ling 57

COMMUNICATIONS Sheller Care

58--60

AN/MPQ-4A

60

58-63

AN/GRA-4

61

Anlenna Thread lube

61

lA·l!PT 62·63

COMBAT SUPPORT

~~oat:;~~~i~~~~t Tips tt~~

~l~~~~rane~:

HDl6MTracior 75 S8700-20 Ca ncellation Word ·75 PLl Supply 17, 18, 26,27, 36. 50,51 52, 54, 60,61 , 68,71' 76. New Publications 19

f

17' 78

lJu 01 lund5 lor ·prlntln, 01 this publica· tlon h s bee n ~ pproyed by HudQuarters. Dlp~ rtme nl 01 tbl Army, 22 Januar}' 1971 .

DISTRIBUTION: In accordance with reo quirements submitted on DA Form 124.

~ "'~ S}O!>-OS 4 -661l

15Z "

Chan~es are you're right on both counts. So wot to do? So check out the Xl item part numbers in the Army Master Data File at your DS or post-level supply. Chances are they do have FSN's . .. and the parts are in stock. If 'you need a part for maintenance and there's no FSN listed, requisition it, item-for-item, using non-FSN requisitioning procedure (see para 3-20.1, Ch 34, AR 725 -50, or refresh your memory with PS 205, page 6). Maintenance items in current TM's with X 1 source codes are being reviewed . .. and correct codes (with FSN's, where applicable) will be in the next revisions

XI F5N'5 The Xl items in the Hawk system new parts manuals got you bugged because you feel they should be stock-numbered? And, you doo't think it's necessary to requisition the next higher item because some Xl items cost so litde? P-F-

SC IH .w.

l52]

~ S5 1 9S

I"A CK I~E.

1 - 15

t18 876 1

Chan~es arc you're right on both counts. So wot to do? So check out the X 1 item part numbers in the Army Master Data File at your DS or post-level supply. Chances are they do have FSN's ... and th.c pans are in stock. If 'you need a part for maintenance and there's no FSN listed, requisition it, item-for-item, using non-FSN requisitioning procedure (see para 3-20.1, Ch 34, AR 725-50, or refresh your memory with PS 205, page 6). Maintenance items in currem TM's with Xl source codes are being reviewed ... and correct codes (with FSN's. where applicable) will be in the next revisions to the TM's.

33

Hawk system components thrive on short talk, from your PAR's azimuth ring to your PCP's roof. To those initial·ridden lists , add PM, After that, maybe a double·OK. STARTING FROM UP, consider the wof of (he PCP, AN/MSW-9.

Hold one on a 4·handed poker game up there. Three people on the roof is pot limit, even though you may feel more are needed up there at times. Try an overload and you'll make leaks .. and inside is gonna get wet.

When you leave the PCP remember to [urn off the blackout light switch. Some of the scale rings coming in Forget the switch and you might get under Parr No. 10109226, FSN 1430enough juic': out of the batteries to give 945·571~. have no "5550" reading, so you one sad wail on the siren ... before it discharges completely. And getting a battery up .to full charge, and out, is no easy task. If you remember the switch when you lock up and leave, the trickle charger should bring the batteries up ... even after siren use.

~~ I

TO PCP

Hawk system components thrive on short talk, from your PAR's azimuth ring to your PCP's rf. To those initial-ridden lists, add PM, After that, maybe a double-OK.

STARTING FROM UP, consider the coof of the PCP, AN/MSW-9. Hold one on a 4-handcd poker game up there. Three people on the roof is pot limit, even though you may feel more are needed up there at times. Try an overload and you'll make leaks ... and somebody inside is gonoa get wet.

.instead of graduating by 25-mil tick marks, you've only got 1 tick mark between 5500 and 5600. \Vhich means that every reading above 5500 is going to be off by at least 2S mils. So, jf the scale's wrong, get the ring replaced. Still with the PAR, remember this

When you leave the PCP remember Some of the scale rings coming in to turn off the blackout light switch. Forget the switch and you might get under Part No. 10109226, FSN 1430enough juic~ out of the baneries to give 945-571~, have no "5550" reading, so you on-e sad wail on the siren ... before it discharges completely. And getting a banery up.to full charge, and Out, is no easy task. If you remember the switch when you lock up and leave, the trickle charger should bring the batteries up ... even after siren use.

electronic shop console filters must be cle~ned weekly ... to prevent dirty contacts, overheating and other damage. On the weekly, tap ,the dust and dirt out before you clean the filter with warm water and solvent. At least once a month blow the dirt out with an air hose before you make with the wet clean.

A COAXIAL WORD on (he OMTS shops: if coax connectors' are too loose

or too tight, you lose ... either way. 1f they're loose, you lose critical decibels on both the sending and receiving ends. If they're too tight, you can crimp or cut the ground, which loses coax capability, or damage the coax receptacle. The connectors are touchy and need > a "just right" snug up. 3S

.instead of graduating by 25-mil tick marks. you'ye only got 1 tick mark between 5500 and 5600. Which means that every reading above 5500 is going to be off by at least 25 mils. So, if the scale's wrong, get the ring replaced. Still with the PAR, remember this

electronic shop console filters must be cle~ned weekly. . to prevent dirty con· tacts, overheating and other damage. On the weekly, tap ,the dust and dirt out before you clean the filter with warm water and solvent. At least once a month blow the dirt out with an air hose before you make with the wet clean.

A COAXIAL WORD on the OMTS shops: if coax connectors are too loose

or tOO tight , you Jose . •• either way. if they're loose, you lose critical decibels on both the sending and receiving ends. If they're too tight, you can crimp or cut the ground, which loses coax capability, or damage the coax receptacle. The connectors are touchy and need "' a "jUSt right" snug up. 3S

nector, the connector's not snugged up enough. If the center pin (contact) extends beyond the ceramic, the connector's too tight. Which means you can damage the pin ... and the receptacle. THE XM78E2 TOWED LAUNCH· ER towing brace (sway bar, stabilizer -you name it) on the outriggers can Like on the threads. If they're totally or partially stripped, forget 'em. Also, match the brace threads to the outrigger threads. Some are coarse, some are fine. If they don't turn easy, forget about forcing ,them. And snug them uptight. Otherwise, the brace'll back off during a ride leading to some very expensive damage - anything from a butchered outrigger to a launcher in a ditch.

Dear Half-Mast, Can we get replacements for the high voltage warning and other decals used with our Howle missile system?

CWO R. C. T.

R. C.T., ou'1I find CAUTION: HIGH VOLTAGE, FSN 7690·281·3077, and other decals listed in SC 7660/90.IL (Jul 67). Some special decals may have to be stenciled on. Directions for removing decals and info on stenciling is in Ch 1 (Feb 65) to TM 9-213, Painting Instructions for Field Use.

~7

31

39

il The A rmy Maintenance Mana9ement System

" The Army Maintenance Management System

42

43 .

44

Dear We've lound that the easiest woy to rep'ace a Huey or HueyCobra T-53 engine fue' . contra' is delinite'y not the best way. It can 'ead to oil sorts of lun and gomes such as im· proper lue' flow, low power, high EGT and shorter engine 'ile. The shortcut that some mechs take is to disconnect the temperature sensing element 'ine at the lue' control. They then put on the new fuel control and use the o'd un· calibrated, dirty sensing element. That's when luel control problems really begin. 01 course, each new luel control comes with its own sensing element. That's because they are calibrated together at the depot luel lab. There is ;ust no shortcut 10 Ihe Huey poop in para 5-345d olTM 55-1520-210-20 (May 69). The sensing element has to be changed along with the lue' control.

(Ed Note- You're so right! That Murphy.in-reverse also leads to a shortage sensing elements at the depot.) 45

0/

AIRCRAFT DA 2408-13 MUST __ _

Dear Specialist K . R. V., You start the PM! or PMP with a red dash status symbol (for the inspection) on the DA 2408-13. If no fault with a more serious status symbol (circled red X or red X) is carried over from a previous DA 2408-13-and if no fault found during the inspection gets a status symbol more serious than the red dash - you won't need to enter any fault you find during the inspection on DA 2408-13. And , if there's a red X status symbol on the DA 2408·13 at the start of the in.. all other faults found during the inspection can be entered on DA 2404 ~.~ .... nu corrective action shown (here only. For any fault wil~ a status symbol that's a red dash or red slash. The fault and its corrective action can be entered on DA 2404 alone if • •_ < _ • •• " ' " , : :, ,"-.

an 111 16th-in opening_ Jf:you do );lave the faulty lifting-eyes, contact your. direct support about reo placing the eye assembly. THE WORD'S on pagt ' 32 of TB 750-911-3 (Apr 70), Better check all your S-31S's . . . you'll save lotsa trouble

that way. TB 750-240 (JuJ 69) has the scoop on PM ~or your shelters, including tips on lifting.

wrong

" place~! you