PS Magazine Issue 063 1957 Series [63 ed.]

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The Cornerstone:

PREVENTIVE MAINTENANCE

When you want to know a ll abo ut the kinds of maintenance your equipment gets! just sca n yo ur eag le eye over ... AR 7;)0-1, which says:

11. Preventive maintenance. Preventive maintenan~e is the systematic care, servicing, and inspection of equipment for the purpose of maintaining it in serviceable- condition ahd det~ting and correcting incipient failures. Preventive maintenance is the responsibility of commanders at all echelons. It is the cornerstone of efficient and eeonomical maintenance. and . . '

12. Or ganizational maintenance. Organizational maintenance is that maintenance authorized f()r, performed by, and the responsibility of, a using organization on its own equipment. This l11aintenance normally consists of inspecting, cleaning, servicing, preserving, lubricating, and adjusting as required and also may consist of minor parts repiacement not requiring highly technical skills.

The Cornerstone:

PREVENTIVE MAINTENANCE

Missiles

2·8 9-20,29 21-25 29 30 31 Batteries 31 31 2%-Ton Trudl:s IG742 Series) Publications' '2~29, 32-36 Chemical Impregnating Seb 40-41 41 Smoke Pob OM Sleeping BaS' 42-43 Batte", Add, Apron 43 Cold' Weather Care 44 ISgt Dozer and Sgt Half-Mastl

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Tanks (Ground Guidesl S-T.., Tnock. IG7441 21f2·Ton Commercial Trucks Voltage Regulators

DEPARTMENTS Connie Rodd

Half·Nt,ast "

W he n you want to know all about the kinds of ma intenan ce you r equ ip me nt gets, just sc an your e a g le eye ove r .. . AR 7))0-1, wh ich sa ys:

11. Preventive main tenance. Preventive maintenall(~e is the systematic care, servicing, and inspection of equipment for the purpose of maintaining it in serviceabl~ condition ahd dettiting and cOl'recting incipient failures. Preventive maintenance is the responsibility of commandel's at all echelons. It is the cornerstone of efficient and econornical maintenance. o nd.

12. Ol'ganizational maintenance. Organizational maintenance is that maintenance authorized f()l', performed by. and the responsibility of, a using organization on its own equipment. This l11aintenance normally com;ists of inspecting, cleaning, servicing, preserving, lubricating, and adjusting as r equired and also may consist of minor parts repiacement not requir ing highly technical skills,

Connie Briefs

PS wants your ideas and contribiJtions, and is glad to answer your que~tions. Just write to: Set Half· Mast. PS, RIri1a. AnIni, MaIlcN., IIew Jenor, Names aod addresses are kept in confidence. n..,.rlntI... . flhltpoololkotltofl, hos ................. ..,. .... ou-t.... .... " ' - .. th. ........ 127 April 561. DISTIl""ION, A.tl.... A....." DC$"I , OCOH, DeSOI'S; ACSIC,. CAMD, CcoA, CUSAno'c, C.tfI, CIHf'O, TID, TJAG, eLL; CMH, CNGI, OCSpWa"1 T....... ical DA; ~ Id; ,C4MG W I TAD Id, us ... , USA I_I 101, T*o keep in good shape is the cooling system. Your temperature gage'U tell you if the engine's running too cold or too hot. If she is, it's check-up time. Be sure the thermostats open at the advertised temperatures. F'rinstance, if a thermostat is supposed to open atal?out 180 0 F,dunk it in wat~r with a thermometer and heat to that temperature for ' a ~est. If the thermostat opens too soon or tOO late, get a new one. Your cooling system has to be clean. Draining and Hushing with water usually does the'job. If not, try mixing a half-pound of washing soda (Sodium Carbonate, Anhydrous technical, FSN 6810-264-6521 - Chern - for a 10-lb bag) 45

to a gaUon of water. Fill the cooling system with the solution and run the engine for 15 minutes. Flush with clear water. See TM 9·2858 for the lowdown on flushing Ordnance equipment. If the washing solution doesn't do the job, use compressed air and a flushing gun nozzle. A real dirty block calls for special, potent stuff. It's Engine Cooling System Compound FSN 6850·272·9327 (Ord). Take care and follow instructions on the container. The stuff packs a real punch. Also check for water leaks, bad hoses, bad connections, bad drain plugs and drain cocks. Look at the water pump and fan belts. If thoe unit has a winterization kit, take care of"it, too. When cleaning the cooling system, open the valves from the heater to the block to clean the heater. Do the same thing when you put coolant in the system. The most important thing is an anti-freeze solution that'll k~p flowing down to 10 below lowest expected

Changing~t~oll!~~l!II~~!I!~"'~~···WIiII"", winter can be tricky. The big deal here is to follow the LO and make your changes for expected temperatures ... not wait until freezing hits. Freezing water and sludge might plug up lube fittings. Before a grease job remove the

keeping another important thing in mind: metal, rubber, plastic - just about everything - gets brittle. The same piece of stuff that bends when it's warm - rubber hose, plastic window, spark plug cable harness - won't give when it's cold-it cracks. So before you do a job that'll strain your rig or one of its parts, keep in mind that you'll likely get a break before you get a bend. 46

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Go slow starting off with equipment that's been parked out in · ~he cold all night. Give the parts a chance to limber up and the stiff, frozen joints to break loose easy like. After your rig's warmed up, roll about a hundred yards in low gear at low speed. That'll give lubricants in the power train and other highf tiction places time to get loosened up. A temporary thaw brings slush that can soak brake linings. And setting a parking brake with wet lining through a freezing night will freeze 'em up solid. When you suspect wet brake linings, chock the wheels and leave the parking brake off. Many a frozen parking brake has been busted when a driver tried

to

fr~ it by ierkingi t

Ai;,:

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At the end of a day s work, start thinking of the next morning. Park tractors and other rigs on terrain that'll be the same in the morning as it was the night before. Meaning the afternoon sun sometimes softens up ground in the winter. Park a rig there overnight, and she'll sink in a little. Next morning, when the mercury's lower than it was in the afternoon, your rig'll be frozen to the ground. Picking out a good place or parking on dunnage will save t~c trouble of breaking things loose. 'Nother thing: If you're working in wet dirt on a fairly warm day and a cold snap is expected that night, dean mud off parts that'll bind when the mud freezes. It's easier to do the job then instead of next morning. About those icy roads that get a dose of rock salt. The salt gets you over the ice but it's the worst enemy of metal. Soon as the weather breaks, wash the under-

side of salted j

des with plenty of fresh water.

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On equipment with gasoline engines, a look at the trip ticket can prevent trouble. The little block that tells you to check the fuel after operation is mighty important. Here's why: Air in a gas tank means condensation overnight. The more space, the more water you get. The less space, the less water. So a few minutes spent filling the tank at the end of the day will keep water out of the fuel 47

system. ]f you can. also drain the fuel filter. A little hunk of ice there can cause a big delay. Naturally, a: "lircie water will get in the fuel system no mactee what you do. Fight it by draining off the water in the bottom of the tank every week or so. That also goes for storage tanks. If you still get water in the fuel system after keeping gas tanks filled and the water drained, try this: Add a half-pint of denatured alcohol, Grade II], FSN 6810-224-6614 (Chern) to the tank for every 10 gallons of gas you put in. The water will mix with the alcohol and go through ' the fuel system easy as through a tin horn. Vehicles equipped with air brakes should have the tanks drained. Open the percocks every night, and close 'em' and build up pressure before you start rolljng in the morning. On winterized equipment, the heater burner and float chamber should be cleaned, and fuel lines checked. for leaks and cleaned. Check personnel heaters for fume leakage - keep a close watch on your cold weather starting equipment to

make sme

it'i )~D i lJ ,m iil ~ ,

The stuff that: ' the worst bJtfng dudng the winter is equipment that's used just now and then. "SpeciaJly if it sets outside. On and compressors and such , you can exercise them twice a week - or maybe more often - instead of once a week. Same goes for rigs and machinery. When you I