PS Magazine Issue 117 1962 Series [117 ed.]

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Citation preview

In the beginning it was a crude sort of thing.

Dirty. Unpredictable. LiDlitcd in its use. But as time went by man strained his ingenuity and know-how and the thing gradually lost its crudeness. It was refined and super-refined to fit whatever special needs came up. It was not long before it became one of the most important things on the face of the earth. No nation without it can be first-rate. It is the very life-blood of a modern army. No effort or cost is spared in producing it. Fantastic precautions are taken to protect it ... and to keep away all things that would contaminate it . . . and to make sure that it in turn will n(lot contaminate. But after all this caution, care and cost, what happens? Some so-and-so fails to put the lid back on the oil can-or otherwise protect it. And this fabulous substance-that the wheels of fate and fortun e turn on-becomes in a matter of minutes just as dirty,contaminated and unfit for use as it was when it settled in some dank corner a hundred million dollars

In the beginning it was a crude sort of thing.

Dirty. Unpredictable. Limited in its use. But as time went by man strained his ingenuity and know-how and t he thing gradually lost its crudeness. It was refined and super-refin ed to fit whatever speciaJ n eeds came up. It was not long before it b ecame one of the most important things on the face of the earth. No nation without it can be first-rate. It is the very life-blood of a mod ern army. No effort or cost is spared in producing it. Fantastic pr ecautions are taken to protect it . .. and to k eep away all things that would contaminate it . . . and to make sure that it in turn will nN contaminate. But after all this caution, care and cost, what happens ? Some so-and-so fails to put the lid back on the oil can-or otherwise pro. teet it. And this fabulou s substance-that the wheels of fate and fortun e turn on-becomes in a matter of minutes just as dirty, contaminated and u n fi t fo r use as it was when it settled in some dank cor ner a hundred million dollars

PS

THE

PREVENTIVE MAINTENANCE MONTHLY

hsa. H• . 117 Pu~li sh ed

bWth e Department DI

1962 Seri ts

the

Army l or

th e

inform.·

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limits of availability, older issues may be obtained direct from PS Magazine, Raritan Arsenal, Metuchen, New Jersey.

IN THIS ISSUE Fealures ARTICLES Page l oad.Carrying .Harness: Care & Cl eaning . . . 2-3

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_ TK· 1l5/ G TOOl Kit: Pictures. Nomenclature, fSN's 50·53 Mi ssile Nike-Herc: Self·locking Battery Cab~e Clamp 13 13 Nike·Herc Track Rada rs: Radome Disks . Ha ..... k: Remolle With Torque Wrench , . 14 Haw,," loader:Transporter: f i nal Drive 15 .. 16 Ha .....k CW Radars : Ched Coolant Honest John M405 Handling Unit . 42 Nike Track Radars: ML 6544 Modulators . 48 Aircraft Raven (H ·23D): Maintenance Tips . . . .54 57 Shawnee (H ·21): Boarding Step Caution . _ . . 58 Sioux (H -13E): Hands Off ~arbAir _Intake . 58 Bird Dog (L· 19): Replacing FIrst Aid Kit . . .. , . 59 Mohawk (AO·l): Pu t Inner Tube in N~se W~eel 59 Sioux (H· 13) & Shawnee (H·2l): lubmg Ald . 60 Raven (H -23): Tool For Bend ing Trim Tabs 61

com~~~~~~~o;~b~~~~;~~PfOlle With

Age 44.45 46 H·33/ PT Handset: PM & Handling Care T-368 Radio Transmitt er: AM Operation Tip 47 Amplifier·Po ..... er Supply AM ·598/ U: 48 Armament BAR: Keep Gold Fi nish on Sear Spri ng 10 M84 SP 4 .2 Mortar: How to Get Snorkels . . . . 38 M52 Howitzers: Gate Assembly leaf Position 40 8·in Howitzers: Measuring Replenisher Oil 41 Wheeled Vehicles MI23 Truck: Clutch ·flywheel Housing Shield 18· 19 G74I % ·ton Trucks: Fu el Strainer Screen . . . 20 Commercial TC Vehicles : Listi ng of MWO's • 21

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Delive; y- Hose Ge11el'al M3A3 Smoke GeQerator: Float 80wl . 11 New Publications . 43 Au xiliary Generator: Aircraft Stat:l:1ng . 62·63 OEPARTMENTS 7 Conn ie ROdd . Joe' s Oope • 29 Question and Answer , 37 Contributions . . ' _ . .. . . , 61 Connie Rodd 's Briefs . Inside Back Caller

PSwants yaur ideas and contributions, and is i l ad tD~nsw e r your qu estions. Nameslnd addresses are ke pt In confidence. Just write to:

So' .II"'I.M. 20 21 CommlHclal TC Vehicles: listing of MWO's Turn Signal s: How to Get 'Em 38 M49C Gas Tanker: Gettmg 35·ft Del ivery Hose 42 General . . 11 M3A3 Smoke GeQerator: Float BOWl New Publications ., 43 Auxiliary Generator.: Aircraft Star:ting . 62·63 DEPARTMENTS Connie Rodd 7 29 Joe's Dope Question and Answer 37 Contributions .. . . . . 61 Inside Back Cover Connie Rodd's 8riefs

PSwantsYDuricieas and contributillns, and is ,lad to answer )'Olir questions, Hames and addresses are kept In confidence, Just write to:

go' -".i/-Mad, pgM....,...,

R""""'A~,

M.J.d.-, h_

?......

Like why the fireman wears red suspenders, that's why you wear loadcarrying harness - to hold things together so's you can get a job done. Could be you'd be embarrassed to death if your "suspenders" fail. But they won't fail if you keep 'em in shape. Which amounts simply to giving 'em good PM. Mostly this means wearing 'em right, keeping 'em clean and fixing 'em pronto if anything goes wrong.

Boiled down, it means taking care of the different parts of your equipment according to the materials they're made of. For instance, canvas in the bags and packs, webbing in the belt and straps, and metal in the connectors. Your guide is FM 21·15 (May 56), w / changes ... Care and Use of Individual Clothing and Equipment. TB QM's 21 (24 Dec 59) and 107 (8 Jul 60) give you the dope on the newest loadcarrying equipment.

INSPEa IT Make the habit of checking your equipment off and on-before you hook it up and while you're using it. If you find any of the defects in bold type turn .the stuff in. Otherwise, fix it yourself, if you can.

SUSPENDERS - Cut, badly frayed, dirty, greasy. STRAPS-Badly frayed, cut, greasy, dirty. BELT - Badly frayed, dirty, cut, greasy. HARDWARE - Missing, rusty, bent, broken, won't connect up right.

GET LOADED ... (LEAN IT

Boiled down, it means taking care of Like why penders, that's why you wear load- the different parts of your equipmem carrying harness - to hold things to- according to the materials they're made gether so's you can get a job done. of. For instance, canvas in the bags and Could be you'd be embarrassed to death packs, webbing in the belt and straps, if your "suspenders" fail. and metal in the connectors. Your guide is FM 21·15 (May 56), Bur they won't fail if you keep 'em in shape. Which amoums simply to giv- w / changes ... Care and Use of Individ· ual Clothing and Equipment. TB QM's ing 'em good PM. Mostly this means wearing 'em right, 21 (24 Dec 59) and 107 (8 Jul 60) keeping 'em clean and fixing 'em pronto give you the dope on the newest load· carrying equipmem. if anything goes wrong.

INSPEa IT Make the habit of checking your equipmem off and on-before you hook it up and while you're using it. If you find any of the defects in hold type turn ,the stuff in. Otherwise, fix it yourself, if you can.

SUSPENDERS - Cut, badly frayed, dirty, greasy. STRAPS- Badly frayed, cut, greasy, dirty. BELT - Badly frayed, dirty, cut, greasy. HARDWARE - Missing, rusty, bent, broken, won't connect up right.

When your bags and packs get dirty, follow the dope on canvas care in Para 5 of FM 21·15 (Aug 61) and in Para 15a(l) in TBQM 107. First, try to get rid of dirt, mud, dust, mildew and other foreign matter with a brush (a soft kind-not one with stiff

never try to re-dye or repair any web stuff. That's a chore for your support people. If the belts and straps are too faded, turn 'em in.

REPAIR IT For repairing canvas items, follow the dope in Para 3d of FM 21·15 and Chapter 2 of TM 10·269.

. ..:-2262 . ., . K. ~ 5120-23fl.226h .•.. 'LiEE,ii, • 5120-231>2264 '" ,·22· X I 5120-232:3345 'I, ~

wrench opng, regular Ig, y.Hn drive size: fSN SIZE 5120-235-5878 . .. ..•. 'I. • 5120-242·3351 ' . -E',h •• 5120-242·3352 . , . ' F % ., 5120-235·5869

Yo, .

PLIERS, SLIP JOINT: angle nose, mltple tongue and groove, S·ln norrrSize . / ' " fSN 5120-27S.Q350 ~ OM CASE. SOCKET WRENCH SET;::sneet S, metal divider lengthwise to form two compartments, 1 for lools"cover~tnged .OR narjJ)w .end1oW/:friction:SMP closing, semi-gloss paint ffulsh, 6?-:1-io Ig overall, 2 1j(6"io w overall, 1 ~ ·l n hoveralL

socket I'Ifenches."l for drive partsaod

53

,

IIRMY IIIRCRIIFT

... she can be a puzzler at times. You gel four-maybe-ftve hundred hours on her and she'll likely as nOt get weak in the knees and come up with a vibration you never had before. You'll feel the vibration when you run 'cr up on the ground-not in the air. So right away you can figure the problem has to be someplace in the landing skid framework. You can save yourself some time by check ing [he aft brace body attachment, first off. The nylok washers used with the brace bolt have a habit of wearing right into the brace slor. And when this happens you' re not going to have a tight brace. Like it says in TM l-IH-23D-2, if the width of the slot is. more than 0.585 inch at the wear spot, you want to change the brace to get rid of the vibration.

NO SHOWER, PLEASE Your bird ever throw a spark tantrum during a PE? Could happen, with the battery connected, what with access covers off here and th ere and you chcck in ' one thing and 'not he r that requires batter~' power. All it cakes to set

the stage for a shower of sparks is for somebody to take the cover off the starter and reverse currenc relay-and then someoody else decides to take the battery cover off, \X/ hat usually happens is that the 54

,

ARM' AIRCRAFT

There 's one area on your that may seem to be a problem-oil leaks. Bur don't let 'em fool you ... you may not have a leak after all! Take the upper engine seal that comes 'in for a lot of mention in the c;lrip-drip-drip problem. You may just have gotten your chopper back from suPPOrt so there're gonna be new seals in there. At first you

... she can be a puzzler at times. You get four-maybe-five hundred hours on her and she ' 1I1ikeJy as nOt get w eak in the knees and come up with a vibration you never had before. You ' ll feel the vibration when you run 'cr up on the ground-noc in the air. So right away you can figure the problem has to be someplace in the landing skid framework. You can save yourself some time by checking the aft brace body anachmcm, first off. The ny 10k washers used with the brace bolt have a habit of wearing right into the brace SIOL And when this happens you're nor going to have a tight brace. Like it says in TM 1· IH·23D·2 , if the width of the slot is . more than 0.585 inch at the wear spot, you' want to change the brace to gct rid of the vibration.

Your bird ever throw a spark. (an- the stage for a shower of sparks is for trum during a PE ? Could happen, with somebod y to taKe the cover off the the ba([er~ ' connected, what with access Starter and reverse current relay-and covers off here and there and you then somebody else decides to take the checkin ' onc thing and ' nmher that re- battery cover off. What usually happens is that the quires battery power. All it takes to set

smack into the reverse current cutout rday and you've got your own Fourth of July ... can play havoc in the june. (ion box by putting an electrical circuit out of whack. But your bird won't get damaged if you try this. If you don't need battery juice, disconnect the battery bef-orc yo~ take the relay cover off ... that ' l1 pre· vent electrical damage. And , with or may Spot a leaky seal here-but don't without the battery connected, tape or get riled. JUSt remember you want to lockwire the battery case rod to a handy put a few fl ying hours on the bird to place. Then the rod can't cause any seat this seal. After that you probably I)hysical or dcctrical damage. won't have that leak.

54

55

NO SHOWER, PLEASE

BEAUTY

There's onc area on your that may seem to be a problem-oil leaks. Bur don't let 'em fool you ... you may not have a leak after all! Take the upper engine seal that comes 'in for a lot of mention in the