PS Magazine Issue 066 1958 Series [66 ed.]

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Citation preview

\"hen your company or bauery gets its 15 or so copies of PS each month, what happe ns to them? That's a good question th at a lotta soldiers have bee n asking, and nobody gives a good answer. Seems like some guys point finger and say til(,: other guys are hiding Maybe. Maybe not. do you get the copies of PS to the people so they'll do the mOSt good?

\X'eJl, here's an examp le of how one lnfantry Company docs ire.0. . .. 1 copy SUPPLY SERGEANT .... 1 copy ARMORER. . .... 1 copy JEEP DRIVERS .1 eoch WEAPONS PLATOON 2 copies RiflE PLATOONS . .2 eoch

And here's how one Artillery Bane r), spreads 'em arounde.O. . ... 1 copy BATTERY HQ . . 1 copy FIRING BATTERY HQ ... 1 copy MAINTENANCE SECTION ...... 4 copies GUN SECTIONS .. 2 eoch

THE

PREVENTIVE MAINTENANCE MONTHLY .Issue No. 66

1958 Series

Published by the Department of the Army for the information of organizational maintenance and supply personnel. Distribution is made through norma! publication channels. Within limits.of availability, older issues may be obtained direct from Preventive Maintenance Agency, Raritan Arsena l, Metuchen, New Jersey.

IN THIS ISSUE EQUIPMENT Miniles Two-Cy(le Engines BaHery Chargers Wheeled Vehides

2,63 10 12

18,24-26,28, 40,43,54 18,22,25-28, 37-38,44,54 Onan Generator Fan Bells 39 lOO-amp Alternators 42 Manuals and Forms 41, 43 Armament 49 Army Aircraft 50 Ignition Timing 54 Gasoline Lanterns 59 TypeWriters 60 Mixing and Transfer Units (Flame FueU 62 Shield Bontam Cranes 63 M62Wre(kers 64 Tra(ked Vehides

\Vhen your compa ny or battery gets its 15 or so copies of PS each month, what happens to [hem? That's a good question that a lotta soldiers have been asking, and nobody gives a good answer. Seems like some guys point a finger and say the orh(;f guys are hiding 'em. Maybe. Maybe nor. How do you ge[ [he copies of PS to the right people so they ' ll do the most good?

SUPPL Y SERGEANT .

ARMORER JEEP DRIVERS

. . 1 copy 1 copy 1 copy

DEPARTMENTS Connie Rodd Question ond Answer Deportment Contributions Connie Briefs

... I eac h

WEAPONS PLATOON 2 copies RIFLE PLATOONS .

2 each

And here's how one Artillery B:mery spreads 'em around. .1 copy C.O. BATTERY HQ . 1 copy FIRING BATTERY HQ . . 1 copy MAINTENANCE SECTION GUN SECTIONS

.. 4 copies

.2 each

I.f"ilil~~"'"·:

24 37 63 6S

PSwants your ideas and contributions, and is glad to answer your questions. Just write to: Sgt HalfMast, PS, Raritan Arsenal, Metuchen, New Jersey. Names and addresses are kept in confidence.

THE

PREVENTIVE MAINTENANCE MONTHLY 1958 Se ries

Published by the Department of the Army for the information of organizational maintenance and supply personnel. Distribution is made through normal publication channels. Within limits ,of availability, older issues maybe obtai ned direct from Preventive Maintenance Agency, Raritan Arsenal, Metuchen, New Jersey.

IN THIS ISSUE EQUIPMENT Missiles Two-Cycle Engines BaHery Cha rgers

Wheeled Ve hicles Tra cked Ve hicles

2, 63 10

12 18, 24-26 ,28, 40, 43, 54 18, 22,25-28, 37-38, 44, S4

Onon Gene rator Flln Be lts lOO-amp Alteroolo rs Ma nuals and Forms

39 42 41 , 43

Armament

49

Arm y Aircraft Ig nition Timing Gasoline Lanterns Ty pewrite rs Mixing a nd Transfe r Units

50 S4 S9 60

(Flame FuelJ

Shie ld Bantam Cranes M62 Wreckers

62 63 64

DEPARTMENTS Co nnie Rodd a ",eslion and Answer Departme nt Conlrib",tions Connie Briek

24 37 63 65

PS wants your ideas and contributions, and is glad to answer your questions. Just write to: Sgt HalfMast, PS, Raritan Arsenal, Metuchen, New Jersey. Names and addresses are kept in confidence. approved by the Direc\o. DtSTRIB UTlDN ; Active ; ACSRC; CAMG: CoA; CMH;CNGB ; OCSpWar, TAGBd.USA ; USA lotel 8d ; Technical Stf Bd; U5CONARC; OS Maj Comd; MOW ; Armies,

~r~!~ ~~; ~~~;t ~f(~~a~is~~~~~r~~~\ &s~t~n;n~~~ ~~f7r:

Oiy Units ; PMST Mil Sch Diy Uni ts; Gen Oepols: Sup Sec, Gen De pots; Oe pots : OrdTk Autmv Comd; AH; USATC ; fid Comd , AFSWP ; Por 01 Emb (O S) ; Trans Terminal Co md; Army Ter mi nals; OS Sup Agcy, PG; Arsenals; CmlCMatCom: DB; Eng. Maint Cen; RMS; Diy Engr; ( ngr Dist. NG: State AG Special Ust; USAR: Mil Di st Spooa l Lr st; For explanation 01 abbreviations used,se-e AR320·50.

What about your outfit? When the last red tag is pulled and the final button is pushed ... will the missile get off the ground and seek out and destroy the enemy bomber? Or will the bomber get through and destroy the area you're protecting? When it comes down to a "them-or-us deal," it's not worth goofing off on Preventive ·Maintenance. A minute's goof o n PM could mean destruction of things that took centuries to build. So ... read on. The city you save may be your own.

MAGGIES MAY NOT BE WRECKS been going around that a lotto 5780 and 5795 magnetrons are leaving and M33 FCS sites before they're due for "discharge." Sometimes a man 'lI figure a maggie's had it because it's not making a good showing it goes . . it could be anyone of a lotio other things that're causing the magnetron . : . n'e xt time the man comes around to check your equipment, drop f'd~stance-

If the magnetron doesn't have the recommended current level, the maggie won't operate at full power ... and it'll probably wear out twice as fast as it should. The 5780 maggie current oughto be 5.8 MA ... and the 5795. 60 MA.

~-,"". "~ - '!Iiml~~~"",:, The tube filament voltage and current oughta be at the right operating values or cold cathode ... and that' ll

The reverse diode current wants to be in the right range or the tube'li be damaged. The current oughta be 7 MA {plus or minus 4 MAl for the 5780 ... and between 50 and 60 MA for the full power 5795. Done·in crystals or weak IF amplifier tubes make for a weak video. So a receiver sensitivity check wants to be made at least once a week to see how the crystals and tubes stack before blame the

-~

~~~~~

average power output magnetron ... and also needs to be measured at least once a week. When the average power drops below the minimum power limits (32 watts for the 5780 and 1000 watts for the 5795) the maggie wants to be removed (depending on your local SOP). But, it should be put in another radar system for a check·out before anyone says it's shot. The maggie might work in the second system which'lI show it wasn't shot after all. And, at a thousand bills a throw for a magnetron, it's worth double checking. Another thing that wants to be done now and again is to compare meters and other things used to test power measurements. If the meters don't show pretty much the same readings, they should be turned in for a going over. -==~='" There're other things which oughta be checked before anyone says a tube has reached the end of the trail 'cause there's arcing in the hotbox~ An open heater, a loose three-ball connector, a cracked cathode glass or a cracked vacuum t.;;;;;.;.:~= itor-any of these could cause arcing. Arcing can also be caused by a pileup of dirt and moisture in the hotbox. You can call a halt to this by using electrical insulating compound (if your Ordnance officer says OK) on the cables, high voltage leads and the glass cathode. The compound also prevents corona discharge-that halo-like glow which leads to high voltage arcing. You wanna go easy with the compound 'cause it's a dust collector. Anp, that's a tipoff that you don 't wanna use the stuff in a dry, dusty area. If everything checks out and the maggie still shows up weak, it is. It needs re-

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placing: ~~"

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3

IT'S WORTH A

FIN

Ever try to open a can of sardines with a monkey wrench? It won't work, 'cause

if's the wrong tool. You run into the same trouble on your Nike-Ajax missile battery box cover jf you

:~~~:::~~: ~~~~~;~Ei~-:h:;r~~;~~:; ~~~~l1e. ~li~7=~.:,:. on 'em. Nothin' else'll do the job.

Whot'1! happen when you use an R&P is the screwdriver'lI slip in the slots, batter

1~~~~::~~~~~~~t

:.

up the screws, and the battery cover won'f

fit snug on the missile like it should. And ~.~R",'A'iI:---':"%l maybe you'll tighten one corner of -the cover more'n another.

Then the guidance fin on your missile is liable to get caught on the partially open battery box cover. Before long, the fin .,~. So yo.'11 have t. d. tile best yo. co. to 14

reduce this charging rote to 5 amperes per battery. Reducing the govemorsetting to slow the engine down some, (see your TM's) may help here. This charger does not provide you any indication of ~"),~= your buggy'. lengtb ,'"

II I I 44

3. Then ,forword to where

you storted, but .. ,

Now, here's how to adjust track tension for your vehicle-

.0U.". loy 0 "raight.df!. on hlp .f Itoe k.d< so lhat lhe ...ds ar. aver Itoe fr"", aad cenler ...pport aad.1toe Halfway between lhe two roU, .., _.tIIlhe "'II between lhe bo_ of lhe "'olghtedt, 9·130 TM till. isn'I, il K iIIch. P{, under aad iIIch aa pi V. lop of Itoe trod