The instructions given in this book cover the operation of the Allis- Chalmers Model B Tractor. A close adherence to these instructions will result in many hours of trouble-free operation and a longer operating life for the unit. This book is written for the purpose of giving the operator essential information regarding the day-to-day care, lubrication, and adjust- ment of the machine. Economical operation will be insured if these instructions are followed. Many Allis-Chalmers owners employ the dealer's Service Depart- ment for any work other than routine care and adjustments. This practice is encouraged as our dealers are kept well informed by the factory regarding advanced methods of servicing Allis-Chalmers products and are equipped to render satisfactory service.INDEX Adjustments Brakes : 22 Carburetor . : . ws 20 Chih oo ccceccceeeeseecetenseeeeess 22 Fan Belt . . . . wee 23 Front Wheel Bearings .......---+200+++ 28 Magneto .....- Pee 20 Wawel ee vevereree 2 Air Cleaner .....-++- ween eee ee 8 Ammeter 14 Anti-Freeze . nee 7 ee Belt Pulley ......0e00ccceeeeeetereeeees 26 Brakes ....csccceeecseeeeeeeeeseereres BB Break in Period ....--. ++ seeeeeee 1B Breather (Engine) .. nee eeeeee 8 Carburetor ee Clutch .. a Clutch Adjustment 2 Cylinder 2 Diagnosing Engine Difficulty we Draining Cooling System . .. Drawbar ... Electrical Equipment eee . eee Front Wheel Bearing Adjustment... . 2 Fuels 5 Fuel Containers we 5 Fuel Fitter ..... 9 Generator . a Governor 21 Hand Cranking W Hydraulic Pump a Hydraulic Rams... - 28 Hydromatic Tires Lift Fails to Operate Lights Light Circuit Fuse Lubrication Lubrication Guide Lubricant Containers Magneto . 5 Maintenance Section ‘Manifolds Oil Filter. Oil Pressure Oil Sump Operating Controls Operating Temperature Operating Tractor Power Take-off Radiator and Cooling System Radiator Shutter Repair Parts Section Rims and Rim Lugs Safety Suggestions Specifications .... Starting Engine Starting Tractor Stopping Engine ; Storage of Tractor ...... Synthetic Tires Tail Light Tire Inflation Three-way Valve Valves : Wheel Spacing Wheel WeightsSPECIFICATIONS Engine: Brakes: Number of Cylinders fon 4 Enclosed Contracting Type, Foot Operated Bore. : a Stroke ee eeee 7 3 Battery: RPM, (Ful load) sees ve 1500 6 Volt, 95 Ampere Hour, 13 Plate High tle 221800 Firing Order... 0.4... 7 N23 Radiator: Piston Displacement ....s..sss+--ese++ 15 ein Copocity --2gol. Magneto: Oil Sump: Impulse Coupling voces Automatic Copacity Aq log Angle... veveeveses 30 degrees : Tsing Advonce f ROdegees_ Transmission and Differential: Point Gap . A 020" Copacity «2... 6a > Spark Plug Size slam. A ‘ Spork Plug Point Gap .... e 030" to 040°" Final Drive Gears: Spark Plug Heat Range — Copecity .. Each 1p. Gotoline AC 45 oF Equivalent Spark Plug Heat Ronge — Fuel Tank: tow Octane vse. AC AT of Equivolent Capacity Ase Transmis: ing Gear Wheel Tread: Speeds (m.p.h.) Rear. Adjustable 40%" to 5214" Fist... : soccer BM Second... an .4 Tire Size: heel ta Front .. 400 x15 Reverse 3 me 9024 Clutch: Single Plate Dry Disc Tire Pressure: one Front 28 lb, Rear 2b. SPECIFICATIONS — SPECIAL EQUIPMENT Belt Pulley and Power Take-Off Belt Pulley: Power Take-Off: Diometer . 8" Spline Size... seeeeeee eT Face sevens Si RPM (At Normal Engine Speed) «- 600 RPM. (At Normal Engine Speed) -. 1129 RPAM, (At Engine Speed of 1362) |. 2545; RPAM, (At High Idle)... fees 650 LUBRICATION ADD ONE EXTRA QUART OF OIL IN TRANSMISSION . The Allis-Chalmers Manufacturing Company reserves the right fo make changes in the above specifications or to add improvements at any time without notice or obligation,LUBRICATION t Pays to Pay a Little More for Quality Lubricants It has long been recognized that the life of a tractor is largely determined by the kind of lubri- cation it receives, Therefore alwoys use oil and grease of high quality, manufactured by o depend- able oil company who hos established o reputo- tion for quality products and whose success de- pends upon maintaining such quality. In addition to using high quality oils it is also necessary to use oils of proper viscosity. Oil that is too heavy cannot reach all points to be lubricated; therefore, it will cause undue wear and engine sluggishness. Oil that is too light will not form a protective film between moving parts. For best results and to assure lubrication between snug fitting parts, refer to lubricants recommended in lubrication guide. Some parts need more frequent lubrication than other parts. Lubrication intervals outlined in lubri cation guide (pages 6 and 7) should be followed closely. MANIFOLDS en Gasoline Manifold HG.1 FUELS For Economy and Performance use fuels specified for your engine. Engines for model “B” tractors may be secured with either high of low compression ratio. Each is designed to efficiently burn a particular class of fuel. For best results use the class of fuel for which the engine wos designed. Standard compression engines are equipped to burn distllote, tractor fuel or low octane gasoline. These fuels should have the following specifications: Gravity — 38 or higher; End Point — 525° or less: Octane Rating — 30 or more; Gasoline — 60 Oc- tane or higher. Engines equipped to burn these fuels are designated by the letter “K” following the engine serial number located on the left rear of Kerosene Manifold FIG. 2 engine block, (Example CE-38167K.) High compression engines are equipped to burn gosoline only. For average loads, use 60 octane gasoline or higher. For continued heavy loads, use 70 octane gasoline or higher. These engines cre designated by the letter “G" following the engine serial number. (Example CE-38167G.) FUEL AND LUBRICANT CONTAINERS In addition to using quality fuels and lubricants, clways use clean containers for storing and handling. PROTECT YOUR TRACTOR. STORE FUELS ACCORD- ING TO YOUR INSURANCE REGULATIONS.STEERING GEAR BATTERY, FINAL DRIVE FRONT WHEEL DRAG LINK SPINDLE PIN RADIATOR CLUTCH RELEASE BEARING STARTING MOTOR TRANSMISSION POWER TAKE-OFFore TRACTOR LUBRICATION GUIDE TO HAVE THE RIGHT QUANTITY IN THE Rl 1, Front Wheels Remove wheels, clean and repack bearings with No. 2 wheel bearing grease every 30 to 60 days: 2. Radiator Capacity 2 gallons. Drain cocks are located ot bottom of radiator and on engine block near carburetor. 3. Breather Cap Clean daily; wash in gasoline, dip in motor cil Throw off excess oil before replacing. 4, Oil Sump Capacity 4 quarts. Maintain oil level to fll mark fon oil gauge rod. For temperatures above 90 F. use SAE, 30; for lowest expected temperature of 32° F. use SAE. 20; for lowest expected tempero- jure of 10 F. use S.A.E, 20W; for temperatures lower than 10° F. use S.A. 10W. Drain and re- fill with fresh oil every 60 hours when using gaso- line. Drain ond refill every 40 hours when using distillate or tractor fuel. Drain plug is located ot bottom of oil sump. 5. Oil Replace when oil begins to darken. Replacement is usually necessary after 200 hours whei, operat: ing on gosoline and 100 hours when operating on tractor fuel or distillate. er 6. Air Cleaner Clean ond refill oil cup daily. Fill to level mark using engine oil of same viscosity as used in oil sump. 7. Fuel Filter Check daily and clean when necessary. 8. Steering Gear Keep filled to filler plug. Use SAE, 140 at all ti GHT PLACE, AT RIGHT TIME IS IMPORTANT 9. Final Drive Capacity 1% pints each. Check weekly and keep filled to level of filler plug. For temperatures above 32. use SAE. 140; for temperatures below 32 use SAE. 90. 10. Transmission Capacity 6 Qts. (with PTO. installed capacity is 7 Qis.) Check every 30 days and keep filled to level plug. Use S.A.E. 20W at all times. Chonge oil twice a year, drain plugs are located on bottom of transmission, and P.T.0. compartment. 11. Generator Lubricate every 30 days with engine oil. 12. Starting Motor Lubricate every 30 days with engine oil. 13, Battery Check weekly, electrolyte solution must be main- tained V4 inch obove separators. 14, Spindle Pins Lubricate doily with chaissis lubricant. 15. Tie Rod Lubricate daily with chassis lubricant. 16, Drag Link Lubricate doily with chassis lubricant. 17. Clutch Release Bearing Lubricate each 10 hours with chassis lubricant. Remove small cover under torque tube to reach fitting. SPECIAL EQUIPMENT 18, Pulley and Power Take-Off ‘Add one extra quart of engine oil to transmission case.AIR CLEANER AIR INLET STACK FILTER ELEMENT. TO CARBURETOR ATTACHING CLIPS or OL LEVEL FG. 3 The daily care ofthe air cleaner is covered in the lubrication guide. However, since the oir eleaney is one of the important safeguards of the engine, i is recommended that in addition to daily core, the entire cir cleaner be removed from the tractor each season and washed out thoroughly, Keep the air cleaner stack cover in place and clean, The alr cleaner hose should be inspected frequent. 'y, making sure that connections are tight and hove in good condition, If wear occurs at carburetor butterfly shaft, it should be repaired. Air leaks of {hese points will defeat the purpose of the ir cleaner, Under extreme dusty conditions the air cleaner should be serviced each 5 hours of operation. BREATHER Service breather cap deily as mentioned in lubri- cation guide. if breather should become clogged with dirt, pressure will be created in the crankeese causing oil leaks at main bearings, magneto shaft ‘and other points. OM FILTER The oil filter is @ highly efficient unit provided for the purpose of removing abrasive particles from the engine lubricating The filter element consists of metal can packed with a special long thread firing yarn, Change fier as outlined in lubrication guide CAUTION: Install only a new element which machine packed to a specific density and supplied by the Allis-Chalmers Mfg. Co,, for the protection of your engine, A slight decrease in ol pressure is generally noted when a new filter element is installed, until the element is thoroughly saturated with oil, ‘Ol SUMP Remove the cil sump each season, cleaning it and the oil pump intake screen. RADIATOR AND COOLING SYSTEM NEVER pour cold water in a hot engine. Clean ‘ein or soft water should be used in the cooling system if available. Hard or alkaline water will form scale which will impair radiation if allowed to build up in the cooling system. The use of wosh- ina soda will help dissolve this seale. Where only hard water is available, washing soda should be used at frequent intervals, and before the accumu. {ation of scale becomes heavy enough to scale off and stop up the radiator passages. 'f soda is used, mix with water thoroughly before Placing in radiator. Operate engine about 2 hours. Drain and flush thoroughly with clean water. Soluble cil is beneficial to the cooling system. It will not prevent the accumulation of lime but will retard such formation. This water soluble oil may be secured from your Allis-Chalmers Dealer,=e FUEL FILTER The fuel filter is provided for the purpose of keep- ing diet ond water from entering the carburetor. However, the best results ore obtained by using edequate fuel storage and handling facilities. If the fuel is kept free of dirt and water by the use of clean containers and proper handling, the filter will have very little work to perform. To clean the filter, shut off fuel supply. Loosen the bowl retaining nut and move bail to one side. Re~ move bowl, gasket and felt filter element. Note which side of the element is “up” and be sure to reinstall with the same side up. The element can be cleaned with ordinary soap and water. A tooth brush facilitates washing. The element must be thoroughly dried before reinstall: ing. Clean bow! thoroughly. It is well to carry on extra filter element on This will avoid delay in the drying operation. FIG. 4 CLUTCH Lubricate the clutch each 10 hours of use, Make sure the grease gun is working properly and use hand. from three to five strokes at each interval. Do not over lubricate.OPERATING CONTROLS LIGHTS AND GENERATOR CHARGE RATE SWITCH, CLUTCH PEDAL BRAKE LATCH 1. Familiarize yourself with the tractor and its operating controls. 2. Inspect oil level in engine oil sump. 3. Inspect oll in air cleaner cup. 1. Check all points of lubrication. Refer to lubri- cation guide. 5. Fill cooling system with water or anticfreeze, GEAR SHIFT POS| BELT PULLEY AND P.T.O,. 4%... SHIFT LEVE! A GEAR SHIFT LEVER L.H. BRAKE PEDAL R. H. BRAKE PEDAL x 1ONS TI \ \ 6. If gasoline is to be used as fuel, fill large tank with gasoline. If low octane fuel is to be used, fill large tank with tractor fuel and small tank with gasoline for starting purposes, Never fil fanks when engine is hot or running. Shut engine off and allow to cool. 7. Check air pressure in tires, STARTING THE ENGINE Close the radiator shutter, Place gear shift lever in neutral position. In cold weather hold clutch Pedal down until engine starts to relieve starter lead. If gasoline is used open valve under large tank. If low octane fuel is used open valve under small tank. Turn on ignition by pulling out magneto switch located on instrument box. Move throttle control forward about four notches. Pull care buretor choke rod. Push starter control lever rod. When engine has turned one complete turn, push choke rod forward. As soon as engine starts re- lease starter rod, If weather is cold more choking may be necessary, or if engine is hot, choking may not be required. SsHAND CRANKING Hand Cranking FIG. 6 Fis. 8 CuuTey OAL srOP CLUTCH PEDAL LOCK, ENGAGED POSTION: ‘cuter sepa) RETURN SPRING] FIG. 7 Push clutch pedal down and engage pedal lock. Proceed as under “Starting Engine.” Engage crank grasping handle with left hand, placing thumb on same side of crank as fingers. Crank in quarter turns only, pulling up and over. Do not attempt to “spin” engine. When engine starts release clutch pedal lock. Do not operate engine with pedal locked forward, OIL PRESSURE " When the engine is storted see that the oil pressure gauge is registering pressure. Do not operate en- gine unless the oil gauge registers. While operating engine look at oil pressure gauge at frequent in- tervals to make sure oil is being circulated by the pump. The oil pressure indicator needle should re- main near the R or M in the word normal, when the engine is hot and running at its normal speed. A slight decrease will be noted when engine idlesOPERATING TEMPERATURE Low Engine Temperatures Cause Condensation, Sludge and Corrosion. Keep Engine Hot. Always close radiator shutter completely when en- gine is started ond keep it closed until engine reaches normal operating temperature; then open shutter amount necessary fo hold this temperature. f burning low octane fuels, operate engine on gosoline until the temperature reaches 190” F. to 200° F., before switching to low octane fuel, This is readily done by shutting valve under small fank ond opening valve under large tank. Never ‘open valve under large tank before shutting valve under small tank as this will mix the two fuels, The minimum operating temperatures are 170° F. for gasoline and 190° F. for low octane fuel. Strict adherence to these recommendations will STARTING With the engine running, push and hold the clutch pedal forward to release clutch. Hold in this posi- tion until the clutch stops revolving. Move the gear guard against excessive condensation and corrosion. ion of lubricating ol, we PRESSURE RADIATOR CAP FIG. 9 THE TRACTOR shift lever to the desired speed position. Release the clutch pedal slowly to avoid jerking. Have throttle open far enough to avoid stalling engine. OPERATING THE TRACTOR Easy turns may be made by simply turning steering wheel fo right or left as desired. Foot operated brakes are provided for making extremely short turns. Turn steering wheel in direc- tion desired and then apply brake on side towards which tractor is being turned. Do not attempt short turns when traveling at high speed. ‘When using the brakes for stopping apply pressure to both pedals so that brakes are engaged evenly. This will bring tractor to an even stop without skid- ding. Latches on brake levers are conveniently located for locking the brakes in the engaged posi tion, for holding tractor on an incline, or for belt work. Operate engine at full throttle or nearly full throttle cond select the desired transmission speed change gear to suit the work being done. Severe over- loads may be thrown on engine if operated at reduced engine speeds on heavy loads. Space the rear wheels to suit the work being done. The front wheels are reversible and may be turned to fit lister ridges if necessary. Adjust the drawbar height to fit implement being drawn. The drawbar should be placed as near in the centerline of draft as possible. Swinging drawbars are available as special equip- ment to oid in turning with heavy loads. Wheel weights are available for securing extra traction on heavy loads. Front end weights are ovailable and are used when @ heavy load is mounted on rear of tractor. They help steering and tend to prevent front wh ground. Is from raising from STOPPING THE ENGINE If burning low octane fuel, close valve under fuel fank and let engine run until it stops from lack of fuel. Place ignition switch in the “off” position. IF burning gasoline, let engine idle a few minutes to reduce its operating temperature, then place ion swich in the “of” position, 12 aoBREAK IN PERIOD The engine requires very little “breaking in,” how- ever, if the work can be arranged, the tractor should be used on light loads the first 10 or 20 hours of operation. It should also be operated at its rated R.P.M. This is usually about three notches from the wide open position on the throttle lever quadrant. The tractor should be operated at the recom- mended temperature, however, if it should over- heat it should be stopped and the couse deter- mined, before continuing. Overheating is indicated by the thermo gauge indicator needle passing out of the green section of the dial, into the red section. If the tractor is used for short intervals, the oil sump should be drained and refilled with fresh oil of the proper viscosity ot the end of the first 30 hours of operation. If the operation is normal, the oil change recom- mendations in lubrication guide may be followed. ANTI-FREEZE Before and during freezing weather it is advisable to fill the cooling system with anti-freeze, If low octane fuel is used alcohol should not be used in cooling system, because of its low boiling point. When low octane fuel is used, ethelene glycol or illed glycerin should be used because of the higher operating temperature used for this type of fuel. RADIATOR SHUTTER The radiator shutter is provided for maintaining the proper operating temperature, Turning the shutter control handle counter-clockwise closes the shutter. Always close shutter completely before starting engine. Open a turn or two at a time until the temperature remains at the specified range. The amount of shutter opening varies according to weather temperature and load. If burning low octane fuel and the load is removed from engine, close shutter immediately or stop engine. This will guard against dilution by maintaining the proper temperature. If engine is stopped, proceed as under general starting instructions, SHUTTER CONTROL HANDLE. FIG. 10DRAINING COOLING SYSTEM Be Sure Cooling System is Refilled Before Starting Engine. To drain cooling system open the drain cock lo- cated on lower radiator outlet and the drain cock fon motor block, near carburetor. (Caution: in freezing weather be sure to drain both places.) Loosen radiator cap to prevent system from air locking, which will retard draining. Stay near tractor and make sure system is completely drained. To remove cap, turn to left. When cap stops, push down and turn farther to left. CAUTION: Never remove radiator cop if temperature is 212° F. or more, FIG. 11 LIGHT CIRCUIT FUSE FIG. 12 A fuse is provided for protection of the lighting circuit. In event of light failure check this fuse. It is located on the light switch and may be reached by removing the two self tapping screws attaching rear half of instrument box to the front half, LIGHTS The light switch controls the current to the lighting circuit and also the generator charging rate. With the light switch clear in the charging, rate is from 2 to 4 amperes. With it pulled out to the first notch the lights are on and the charging rote remains the same. With it pulled all the way out, the lights are off ond the charging rate is increased to 12 amperes. This last position is to be used only when the battery, due to abnormal conditions of operation, looses its charge faster than the low charging rate can make up. In ordinary tractor operation the danger will be to overcharge the battery. AMMETER The ommeter shows the charging or discharging rate of the battery. If the ammeter should register discharge with the lights off, disconnect the battery cable until the difficulty is located and corrected. 4 Such condition is usually caused by @ worn or frayed wire causing 6 short circuit or by the cut-out relay points failing to open when the engine is stopped. eawe GENERATOR The tractor is shipped with the wire disconnected from the field terminal. This wire must be con nected when the tractor is put in use. If tractor is to be operated without the battery in place, disconnect the field terminal wire. This will prevent damage to generator. The cut out relay, attached fo generator case, pre- vents the battery from discharging through the generator, when the engine is stopped. The only care necessary for this is to examine points occa- sionally and file them smooth if necessary. The commutator and brushes may be cleaned with grade 00 sandpaper. Do not use emery cloth. The third brush is adjustable, however, it is preset at the factory and it should not be changed to increase the charging rate. AMMETER TERMINAL oi, CUP CUT-OUT RELAY. FIELD WIRE TERMINAL GENERATOR THIRD BRUSH (CLAMP SCREW: on cup FIG. 13 TAIL LIGHT The tail light is mounted on the rear seat frame angle for use as a fail light and also for vision if equipped with @ white lens. It can be moved from the center position to either the right or left seat back bors to avoid implement interference when necessary, When making this change, clean the mounting surface of paint so that a good ground connection can be obtained.RIMS, LUGS AND CLAMP BOLTS don the wheel by two stationary and two eccentric rim clamps. There are two lugs on the rim which fit on either side of one of the stationary rim clamps. These lugs drive the rim. install rim as shown with the valve stem in cutout Portion of wheel. Install eccentric rim clamps last. Always attach rim clamps as shown. The eccentric rim clamp bolts have a cross stamped in their heads. One arm of this cross is longer than the other three, and coincides with the high or tight side of eccentric. In tightening the eccentric bolts, turn in opposite directions and as near the same amount as possible. Hold in this position and tighten lock nuts, DIRECTION OF TRAVEL STATIONARY RIM CLAMPS "AND BOLTS eM rive Lues ECCENTRIC RM CLAMS "AND BOLTS FIG, 15 WHEEL SPACING Standard Tread FIG. 16 ( Special 4012” to 6812” Tread —— HiG..17 Wheel spacing is adjustable, to meet the require- ments of the various implements and row spacing of the different crops. Rear Wheels. The rear wheels are-adjusted by locating the lugs ‘as shown in chart and turning the rims in or out. When turning the rims, they must be changed from cone side of the tractorte the other to keep the tread turning in the proper direction. Spacings obtain- able are as shown in chart, Front Wheels (Standard) The front wheel spacing may be changed by simply removing the hub bolts ond reversing the wheel on hub. “ Adjustable Front Axle The front axle tread width is changed by removing the two retaining bolts holding spindle support in the front axle bar and loosening the clamps on the drag links, Two exira bolts and four lockwashers are furnished with each adjustable front axle. When the second hole of spindle support is exposed these bolts must be installed in the second hole with the head and the two lockwashers on the rear side of the spindle support, This bolt acts as a stop for the spindle arm ‘ond prevents the front wheels from turning far enough to lock in the turned position. ah_ The “toe-in adjustment of wheels must be adjusted each time the spacing of axle is changed. To make this adjustment, have the tractor on level ground, place the wheels in the straight ahead position and the steering wheel in the central or straight ahead position. Adjust the wheels so they are exactly 3°16" narrower in front than at rear, at hub height. Tighten the clamp bolts on the tie rods securely. Additional width adjustment can be secured by turning the wheels in or out on hub. The following chart shows the position of the spindle supports, wheels and the spacings obtainable. Set in completely 4011 16" 46-11 16" One hole out of front axle bor... 44-11 18" 50-11, 16" Two holes out of frontaxle bar... 48-11 16" 54.11 16” Three holes out of front axle bar.. 52-11 16" 58-1116" Four holes out of front axle bar .. 56-1116" 62:11:16" Five holes out of front axle bor ... 58-1116" 64-11, 16" WHEEL WEIGHTS The tractor tires are % filled with a 15% calcium chloride solution to add weight and improve trac- fion. This method of adding weight, adds the weight closest to the ground where it is most effective, It is also a fee wheeling weight and adds very little if ony extro load on the gears Extra weights are available for mounting on side of engine and rear wheels if extreme con cause excessive loss of traction. DRAWBAR The drawbar is adjustable in height and has six Positions. As shown it is in the third position. Two lower positions may be obtained by removing the clamp capscrew and moving drawbar down until the proper hole lines up with capscrew position. Three higher positions may be obtained by remov- ing clamp and clamp pin and turning the drawbar over. The A.S.A.E. drawbar is extra equipment. The drawbar must be installed in the position shown in order for the braces to fit between fender angles and drawbar. The braces cannot be used in any other height position. Always keep P.T.O. guards in place when operat- ing P.T.0. driven machines. 7 ASAE, ORAWBAR A. S.A. E. Drawbar FIG. 19— hadMAINTENANCECARBURETOR rune. ADJUSTING SCREW. ‘THROTTE STOP SCREW fic. 20 The carburetor has two adjustments, one for con- trolling the idling speed of the engine and one for correcting the changes in fuels and atmospheric conditions for idling speed. 1. To regulate idling speed of the engine, have the engine thoroughly warm and adjust the idling stop screw on throttle shaft on inner side of car- buretor. The idle speed of engine should be op- proximately 300 to 400 RP.M. 2. For correct fuel mixture at idling speeds of engine, adjust the idling screw located on front top of carburetor. Turn adjusting screw inward for richer mixture and outward for leaner mixture. Normal setting is approximately one and one-half turns out 3. The main jet is not adjustable and is fixed at @ predetermined size, to give maximum economy ‘and performance. MAGNETO Locesceew, TMING 16 gReaeer rom ea as Prordk vane tion! ROTOR VENTLATING HOLES FIG. 21 To time the magneto: Crank engine until No. 1 piston is approaching top center on its compression stroke and mark “FIRE” appears in center of in- spection opening on left hand side of torque tube. Remove the distributor compartment cover from magneto that is retained by two screws. Turn magneto until the rotor contact lines up with the timing lug in case. Couple magneto to engine. If rotor does not exactly line up with the lug, turn magneto on engine until it does. The slotted hole for lower bolt is provided for this purpose. Ti the upper capscrew first. Do not overtighten lower nut, ten The compression stroke of number one piston can be determined by removing spark plug and placing thumb in spark plug hole. Crank slowly until is forced past thumb. The “FIRE” mark on flywheel will be very near the inspection opening at this time. Attach number one spark plug wire to upper termi- nal nearest cylinder block, number 2 to upper terminal farthest from block, number 4 to lower terminal farthest from block and number 3 in re- maining terminal. The spark plugs and cable should be maintained in good condition and free of dirt and grease. In the event of ignition difficulty they should be checked before opening up magneto. The spark plugs should be removed every 200 hours of operation and cleaned and the points respaced. The point gap should be set from .030" 10.040". Make this adjustment by bending outside electrode. Never bend center electrode. Use Allis-Chalmers 212056 plugs for gasoline and Allis-Chalmers U-2980 for low octane fuel. In event of difficulty in the ignition system, plugs ‘nd wires having been checked remove the dis- tributor compartment cover held in place by four screws. If breaker points are pitted or pyramided file smooth with a fine cut file. If points are worn or badly pitted, they should be replaced. Points should have .020” separation when the breaker arm rests on high side of cam.Place one drop of oil on cam lubricating wick. HIGH TENSION Reassembling distributor cap to magneto involves eee meshing of rotor pinion with distributor gear as MARKED TOOTH y follows: The marked tooth of rotor drive gear ROTOR GEAR (beveled tooth) must mesh with tooth marked "C” on rotor gear. If gaskets are broken they must be replaced, Make sure vent holes are open in rotor compartment. If these holes become plugged, the magneto will not be ventilated. The magneto is permanently oiled at factory ond requires no fur- ther lubrication. CARBON BRUSH For difficulties other than above mentioned, remove the magneto and take it to the nearest authorized service station for check up and repair. HIGH TENSION LEAD ae CAUTION: Failure to service spark plugs as recom- Points may be adjusted by loosening lockscrew and mended causes @ severe overload to be placed on turning adjusting screw. magneto. GOVERNOR The engine R.P.M. is adjustable by throttle only. idle and 1600 R.P.M. To insure good governor The governor is of the variable speed type and will action it is important to have all linkage from gov- control the desired R.P.M. within the range of low _ernor to carburetor work freely CYLINDER LINERS, PISTONS AND RINGS The Engine Has Renewable Cylinder Liners, Which ‘Make Reboring Unnecessary. Oversize pistons ond rings are not supplied. If consisting of liners, pistons, rings, etc. should be wear on the cylinder liners is sufficient to require installed. oversize pistons and rings, a new engine assembly VALVE TAPPET CLEARANCE AND VALVES Correct clearance between the valve stems and rocker arms should be maintained at all times. To adjust clearance, turn engine with crank until valve closes and push rod is at its lowest position. Loosen valve adjusting screw lock nut and turn screw until there is .010" clearance between valve stem and rocker arm. Tighten lock nut and recheck. The engine must be heated to its normal operating temperature when making this adjustment. Lack of compression because of leaky valves may be caused by either insufficient clearance between rocker arms and valve stems, by the collection of corbon at the valve seats or by carbon or a gummy substance on the valve stems preventing the closing of the valves. FIG, 23 2CLUTCH ADJUSTMENT The proper clearance of 14” must be maintained between the clutch release levers and the clutch release bearing. To adjust: remove the smell cover from lower side of clutch housing and turn each of the adjusting screws until '4” clearance is obtained. This will allow approximately 114" of free pedal travel. Adjust each lever exactly the same and tighten locknut, BRAKES The broke moy be adjusted by entering a screw driver in slot of brake lever cover and turning screw to right to tighten brake. The brakes should be adjusted as evenly as possible 2 and so that broke latch can be engaged and stil be effective. If the brake is adjusted too tight the latch cannot be engaged,rev FAN BELT ADJUSTMENT a ‘GENERATOR ADJUSTING yp SECAPSCREW AND SLOTS: FIG, 24 On tractors equipped with generators loosen the generator adjusting screw and move the generotor ‘way from cylinder block until the belt has about fone inch free movement at point A." On tractors without generators, loosen the two sheave adjusting clamp bolts and turn front sec- tion of sheave to the left. If when the end of the diagonal slot is reached, and more adjustment is needed, two extra holes are provided and the clamp bolts can be relocated in these holes. Hf fan belt bottoms in either of the sheaves the belt should be replaced, FRONT WHEEL BEARING ADJUSTMENT The front wheels are mounted on taper roller bear- ings. At frequent intervals remove the weight from wheels and check for side play. If side play exists it will indicate bearings are loose and it will be necessary to adjust bearings. To adjust bearings, remove the hub cap and tighten the nut on end of spindle until all play is removed and bearings have a free rolling fit. The inside of the wheel hub is provided with a felt washer to protect bearings from dirt and to retain grease in the hub. This felt washer should be replaced each season. 23 OIL SEAL WHEEL HUB CAPSCREW “3 ADJUSTING NUT INNER AND OUTER WHEEL BEARINGS Fie. 25HYDROMATIC TRACTOR TIRES It is generally known, that to obtain maximum fraction with a tractor equipped with low pressure pneumatic tires, weight must be added. The prac- fice has been to attach cast iron weights to spokes of the rear wheels, but after numerous experiments by our engineering department, the use of liq injected into the tire has shown several advan- tages. The liquid adds weight to the tractor ot the correct point — nearest to the ground — and there- by increases the stability of the tractor. Weight added in this manner is a “free wheeling” weight and eliminates much of the shock that otherwise would be absorbed by the tractor gears. As water alone will freeze in cold weather, Allis: Chalmers! tractor tires are filled with the proper quontity of 15% calcium chloride solution. Calcium chloride will in no way harm the casings, tubes or valves. A mixture of 15% calcium chloride and 85% water has a specific gravity of 1.140 and may be tested by the use of an odrinary battery hy- drometer. This above zero but will not freeze solid at 20° below zero. No harm will be done to the tires at even colder temperatures. jure will form a slush at 10 The tires are filled about 54 full of the solution and then inflated to the standard recommended air pressure. This amount of solution will give the same weight as two cast iron wheel weights on each wheel. If more weight is needed for difficult traction conditions, wheel weights may be added. Tire companies have instructed their service stations concerning liquid ballast for tractor tires and they have the necessary facilities for mixing and inject ing this fluid into the tires. If the valve core is to be removed for any cause, it will be necessary to jack up the tractor and turn the wheel, until the valve stem is on top otherwise the solution will be lost. Calcium chloride and water solution as supplied in tractor tires is in no sense dangerous, but because it may attack clothing or cause skin irritation in some persons, especially if it comes in contact with open cuts or sores, we urge every one to avoid coming in direct contact with it, ‘A remedy after having contacted this solution, is to simply wash the skin with pleny of clean water. SYNTHETIC TIRES AND TUBES Synthetic tires are handled in the same general manner at natural rubber tires, as outlined above, but with the following exceptions. Tires must not be operated or permitted to stand with low air pressure, this will be detrimental to casings. In order to secure service equal to tires and tubes mode from natural rubber, air pressure snust be maintained at all times, at recommended figures. Do not inflate tube when removed from fire more than enough to make it fill out round. Tubes inflated beyond their elastic limit may not return to their original shope and size, also there is danger of tube tearing when not supported in casing. When repairing tube, bevel sides of cut and slightly increase length and width, Buff tube lengthwise of grain or mold marks. Place patch on inside of tube ot least 14” larger than opening on each side. Knead or roll in place, fill cut with pure gum rubber and place second patch on outside, cutting it larger than patch on inside. Vulcanize at least 10 minutes. Place tube in tire ond opply @ good grade of vegetable cil soap to base of tube and inside of fire, Place on rim and adjust tube and tire evenly cll around. Inflate to seat tire on rim then deflate. Tire may now be filled with calcium chloride in usual manner or inflated to recommended pressure. TIRE INFLATION The recommended inflation is 12 Ibs. for the rear tires and 28 for the front tires. When plowing, and one wheel has greater traction than the other do not decrease pressure to equalize, instead increase the pressure in the furrow wheel to 16 Ibs. High pressure will cause no damage to tires unless 24 slippage is excessive. Watch the tread wear and correct tire pressure if it is excessive or uneven. When mounted implements are used, additional pressure should be used. Use about 1 Ib. addi- tional air pressure for each 800 Ibs. of weight added. RMAELECTRICAL EQUIPMENT Except for minor adjustments, see your authorized service station, Battery — The storting and lighting system uses © six volt battery, designed and built to meet the requirements of the tractor, HYDROMETER FIG, 26 Check the electrolyte (solution) in the battery at least once each week to see that itis at the proper level. This level should be maintained to lower edge of filer tube (which is about !4” above top of Separators). The battery supplied with your tractor has @ lead washer type valve in the filler tube to Prevent over filling. Never add anything to the solution except DISTILLED or RAIN water. Boiled water will not do. The supply of water should be kept in clean, covered vessels of gloss, china, rubber, or lead. Do not allow lighted matches or an open flame of any kind to come in proximity to battery cell covers, The need for frequent addition of water to battery, indicates the charging rate maintained is too high In cold weather, add water only immediately be- fore running the engine so that the charging will mix the electrolyte and water and prevent freez- ing. A fully charged battery will not freeze in very cold temperatures, but if only partly charged, will freeze and be ruined at much higher tempera tures. Weekly readings of each battery cell should be taken with a battery hydrometer. The readings indicate as follows: 1.280, full charge; 1.225 half charge; 1.150 discharged, 25 By toking frequent readings with the hydrometer, it is possible to keep generator charging rate so Adjusted as to hove batiery charged, within 10 10 20 points of full charge. When taking the read- ings, return the electrolyte to the cell from which it was taken. Due to the infrequent use of tractor in cold weather and the extra amount of electrical energy required by starting motor, it is usually necessary to use a higher charging rate than in summer to keep battery fully charged, Refer to instructions on ammeter for charging information. Keep the battery clean by using a stiff bristle brush —not metal. If terminals are corroded or if the battery is acid soaked, wash with a soda solution (4 Ib. of soda to one quart of water). Vent plug must be kept in place when cleaning battery. After washing battery check gas escape holes in vent cops making sure they are open. If battery is re- moved from iractor, disconnect the grounded posi- tive terminal first. When re-installing be sure the ground cable is installed last and connected to the positive post. Battery box cover should be in place and tightened snugly fo prevent battery from being damaged by vibration. (Be sure that wood spacer is between top of battery and cover.) Any non-insulated metal Across top of battery will short and cause it to lose its charge. In event the tractor is not to be used for some time, it is advisable to remove the battery, have it fully charged and stored in a basement or some similar Place where the temperature is to be as low as possible, but above freezing, Generator — the cut-out relay, attached to gen. erator case, prevents the battery from discharging through the generator when generator is idle. The only care necessary for this sto examine the points occasionally and if pitted, file them smooth with fine point fie 'f ammeter fails to show a charging rate one of the following may be the cause: 1. Loose or corroded wire connections, 2. Broken wires. 3. Faulty ammeter, 4 Oily o gummy generator brushes or commu: tator.5. Worn generator brushes. Commutator and brushes can be cleaned with grade "00" sandpaper. (Do not use emery cloth.) Ammeter — The ammeter indicates the charging or discharging rate of battery. ammeter should register discharge with lights off, disconnect the battery cable to prevent its dis- charge until the difficulty is located and corrected. Such a condition is usually caused by o worn or frayed wire causing a short circuit or by cutout relay points being stuck together. The lighting switch is also a generator output regu: lator. With this type switeh, it is possible to increase the charging rate without making any changes in the generator. The operation of the switch is as follows: With control rod forward as far as possible, charging rate is from two to four amperes and lights are off; when pulled out to first stop, lights are on cond charging rate remains the same; when pulled back as far os possible, the lights are off and the charging rate is increased to approximately twelve campers. This last position is to be used only when the battery, due to abnormal conditions of opera- tion, looses its charge foster than the regular charg- ing rate can make up. In ordinary tractor operation the danger will be to overcharge the battery. Starting Motor —The starting motor seldom couses any difficulty, but if it should, any one of the following may be the couse: 1. Exhausted battery. 2. Broken or loose wires. 3. Loose or corroded battery terminals. 4. Starting switch making poor contact, BELT PULLEY AND POWER TAKE-OFF The belt pulley and power take-off assembly is mounted to the rear end of the transmission case, cond is lubricated from the transmission case supply. ‘A clutch lever is installed on this assembly so that it may be engaged or disengaged. Always dis- engage main clutch before shifting belt pulley clutch. We cannot over-emphasize the importance of having the proper size pulley on the driven machine. Much power is lost and unnecessary load put on engine unless proper pulleys are used. The pulley furnished with the tractor is the correct size for this unit. 26 The pulley is 8” in diameter ond turns at @ speed of 1129 rpm. at normal engine speed. Never operate engine below normal speed where con- stant power is needed and heavy belt load is encountered. To figure speed of the driven unit or the pulley size required multiply the diameter of tractor belt pulley by its revolutions per minute, and divide by t.pam. of driven unit. Example: 8” diameter x 1129 rpm. = 9032. 9032 divided by 1000 (r.p.m. of driven unit) — 9.03" — in this case use a 9” pulley as it is the nearest regular size.CARE AND OPERATION OF HYDRAULIC PUMP AND RAM — R.H. AND L. H. SELECTOR LEVER’ 4 ©3 CONTROL LEVER A A RAM PACKING NUT R. H. RAM L Lubrication — Oil supply in the transmission cose is used for the operation of the pump, therefore maintain this oil level to transmission filler plug level with S.A.E. 20W engine oil. IMPORTANT: il must be kept clean to avoid dirt from entering check valves in hydraulic unit. Drain and Flush transmission compartment if difficulty in pump is caused by dirt. Operating Unit — To operate the lift, stort trac tor engine, ond engage P.T.O, in usual manner. There are three positions for the hydraulic lift lever, the raising position, holding position and lowering position. To lift implement to raised position, pull hydraulic lift control lever back as far as possible and hold it there until the implement is raised to the desired 7 height, then release lever which will avtomotically spring back to the hold position. In this position the pump does not force any cil fo the ram nor does it telease ony oil from the ram. If the lift control lever is held in the raising position after the ram is fully extended, the pump will build up pressure until the relief valve opens, which will be accom- panied by a slight squealing noise. When this sound is heard the control lever should be released. To lower implement push control lever forward as for os possible and leave it down while implement is in use. In this position the implement is free to flat. The adjusting stop screw in control dise may be adjusted to control speed of implement lower- ing. Turn screw in to decrease speed ond out to increase.THREE-WAY VALVE Place lever in extreme right hand position to control raising and lowering of right hand plow and to extreme left hand postion for left hand plow. With lever in center position, both plows can be raised or lowered together. LIFT FAILS TO OPERATE 1. Tractor power take-off not engaged. Oil level in transmission low. Viscosity of oil in transmission too heavy. AON + Implement improperly assembled or binding to the extent that more than 1,600 Ibs. pressure is exerted on ram causing safety release valve to open. 5. Air in hydra 6 Check valves fail to close. This may be because of dirt or worn check valves. Check with your Nearest Allis-Chalmers dealer. ystem, RAMS Both left and right hand rams are shown. When only the R.H. ram is used attach hose to pump at Point “A’ and put pipe plug in place of line to 3-woy valve. 28 Tighten the ram packing nut only enough to pre- vent leakage. Do not over-tighten, The Chevron type packing must be installed with open end of 'N" towards anchor end of ram.DIAGNOSING ENGINE DIFFICULTY The following suggestions are listed for your as- sistance, You can make simple adjustments on your tractor thot will improve its operation and save you the time and expense of engaging a serviceman Always make one adjustment at a time and if the adjustment made does not improve the condition, return to the original setting before proceeding to the next adjustment. ENGINE FAILS TO START OR RUNS UNEVENLY Fuel valve shut off, Low octane fuel in carburetor from last operation. Float valve sticking. Fuel tank empty Clogged fuel filter or fuel lines. Dirty or clogged air cleaner. Leaking or loose manifold. Engine flooded. Broken wires from magneto to engine. Wires not in proper position ‘Switch not turned on or defective. Spark plugs wet, dirty, or broken, Magneto weak or out of time. Spark plug points not properly spaced. ‘Magneto points pitted, dirty or improperly spaced. ENGINE OVERHEATED Low water level in cooling system. Radiator clogged. Fan belt slipping, Collepsed radiator hose Thermostat stuck Tractor overloaded. 'gnition timed late, Fuel mixture too lean, Weak spark. Diluted lubricating oil. Polling heavy load at reduced engine R.P.M, Water pump impeller vones broken, STORAGE OF TRACTOR Tractor Protection is Pocket-Book Protection, If tractor is stored for any length of time, a few Precautionary measures are helpful in preserving Yarious parts, also in avoiding future difficulty. 1. Store tractor under cover. If impossible to place tractor under cover, be sure to cover air stack and exhaust pipe. 2. Drain radiator and engine block. 3. To avoid gum content collections, drain both fuel tanks and carburetor. 4. Leave radiator and fuel caps slightly loose to protect gaskets. 29 5. Block tractor up to remove weight from tires ‘ond to keep tires from contact with moist floor. 6. Remove battery and store as recommended un- der electrical equipment. 7. Remove spark plugs and pour ¢ small quantity of light motor oil on piston tops. Crank engine over @ few times and replace spark plugs. 8. When tractor is removed from storage it should be serviced throughout, including draining and refilling the oil sump with fresh oil.SAFETY SUGGESTIONS Many hours of lost ime ond much suffering is caused by the failure to practice simple safety rules. IT IS TOO LATE TO REMEMBER WHAT SHOULD HAVE BEEN DONE AFTER THE ACCIDENT HAS HAPPENED. 1. Do not fill fuel tanks when engine is hot or while using lantern or when smoking. 2. Do not attempt to oil or grease a machine or tractor while itis in operation, when hand 3. Do not attempt to spin eng cranking. Do not wear loose fitting clothing that may be blown into moving parts. 5. Keep all shields and guards in place. 6. Place gear shift lever in neutral position when starting engine. 7. Machinery should only be operated by those who are responsible and delegated to do so. 8. Only one person — the operator ~ should be permitted on tractor when in motion. 9. The rate of travel on hillsides or curves should be regulated so there is no danger of tipping. 10. Donot remove radiator cap when temperature is above the boiling point. le 12. Brakes should be properly adjusted. Do not drive too close to the edge of a ditch or creek. 30 13. Never operate your tractor in a closed garage or shed. 14, When tractor is hitched to a stump or other heavy load, always hitch to drawbar, and never take up slack in chain with a jerk. 15. Always keep tractor in gear when going down steep grades. 16. Do not leave the engine running unattended when any one is adjusting or repairing a driven machine. 17. Do not attempt fo operate tractor unless you are in the driver's seat. 18. Always stop power take-off before leaving driver's seat. 19. Never stand between tractor and drawn im- plement when hitching. Use an iron hook to handle drawbar. 20. Do not put on or remove belt from belt pulley while pulley is in operation. 21. Do not dismount from tractor while it is in motion. 22. Store fuels at a safe distance from buildings. 23, Provide a first-aid kit. Treat all seratches, cuts, etc. with the proper antiseptic immediately. Follow these rules faithfully and insist that others with whom you work or that operate your machine follow them also, Remember, an accident is usually ‘caused by someone's carelessness.REPAIR PARTS SECTION REPAIR PARTS Order all repair parts for this machine from your local Allis-Chalmers dealer. To guide you in ordering repair parts, we have Prepared the following illustrations which identify the various assemblies and the basic parts of your tractor. HOW TO ORDER REPAIR PARTS When ordering repair parts for your tractor, sup- ply the following information: 1. The tractor and engine serial numbers. The serial number of your tractor is located fon top of transmission as shown in illustration below. Give the complete number and prefix letter. Example: “"B-37445." The engine serial number is located on the rear left-hand side of the engine as shown below: Give complete number and all the letters. Ex- 2. Mention if tractor is a standard, single front wheel, or wide front axle model, 3. Stote the common name of the part you wish to order, or a description of the part, and its location on the tractor. 4, Always print your name and post office ad- dress, where parts are to be shipped; also specify whether material is to be shipped by freight, express or parcel post. EB 104127 ASTOR SEA. NUMER \\ ample: “CE-49221G.” Tractor Serial Number ia Bid Engine Serial Number IMPORTANT Unless claim for errors is made immediately upon receipt of material it will not be considered. If domaged material is received, a full description of the damage should be made by the carrier ‘agent on the freight bill, If this description is insisted upon, full damage can always be collected from the transportation company. No responsibilty is assumed for delay or damage to material while in transit. Our responsibility ceases upon delivery of shipment to the transporta- tion company, from whom a receipt is received showing that shipment wos in good condition when delivered to them; therefore, claims (if any) should. be filed with the transportation company and not with the supplier. Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. aThe Model B Tractor is available in Two Styles As Shown STEERING WHEEL HEAD LAMPS STEERING DRAG LINK FIG, A SPINDLE SUPPORT ‘SPINDLE RETAINING BOLTS Model B Tractor with Adjustable Front Axe! Fi. 8 Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 32BREATHER CAP INTAKE AND EXHAUST MANIFOLD. | ) ) MUFFLER THERMOSTAT 4 | 1 HOUSING _/P a / AIR CLEANER GENERATOR Ol SUMP Engine —Left Side View FIG. ¢ RLU. OIL LEVEL GAUGE Is Engine ~ Right Side View ——___ FG, D Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 2d a-ou mai, komoing W “ota 338 TINA INOts 92 "91s 35 TIKY INOW — XENI wONMAD ay HINVETO 30NVO ONWHL 91s 339) S3ATVA GNY GY3H ¥BONMAD avo aNYL tans aNO RE ORINDA NYE and 2NO1 sTav> AuELLVE 4108 S1auNa903 1avis MIVA NOISSIMSNVAL WAT LHS wv39 X08 INIAMISNI Pere) Sana aN wv39 ONKE TUNA wamvea. / NolHsno avas Orider Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. | | tPUMP HOUSING «. SHAFT AND BEARING ASSY, \ GRILL SHUTTER, RADIATOR oumer eBow PULLEY FLANGE aes Pump Cover DRAIN COCK ~ Radiator Assembly Water Pump Assembly FG. F RG. 6 ROCKER ARM SHAFT SUPPORT INTAKE ROCKER ARM EXHAUST ROCKER ARM ROCKER ARM SHAFT SPRING. RETAINER VALVE SPRING "VALVE GUIDE ROCKER ARM COVER GASKET INTAKE VALVE Cylinder Head —Cutaway View FIG. H EXHAUST VALVE Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 35OIL SEAL WHEEL HUB ‘CAPSCREW JS INNER AND OUTER WHEEL BEARINGS Front Wheel FIG. 1 FLYWHEEL ASSY. RELEASE LEVER PRESSURE PLATE DRIVE PLATE ASSY. FACING FACING RIVETS BACK PLATE CLUTCH SPRING AND CUP FIG. 3 Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 36PINION SHAFT BEARING PINION: SHAFT: BRAKE DRUM REAR WHEEL on HOUSING GEAR ASSEMBLY REAR WHEEL AXLE OIL SEAL REAR WHEEL AXLE BEARING. Final Drive FIG, K SPECIAL EQUIPMENT POWER TAKEOFF SHAFT BELT PULLEY 1b Asc Deawean suPPORT : 4 i ' at ASAE, DRAWBAR Belt Pulley and Drawbar FIG. L Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 7SPECIAL EQUIPMENT RAM PLUNGER Hydraulic Litt ————————— FIG, M DRAWBAR SUPPORT \e y SWINGING DRAWBAR Swinging Drawbar FIG. N Order Repair Parts By Description. Always Give the Tractor and Engine Serial Numbers. 3: et ata ee Ub) ited 'O SERVICE YOUR FARM MACHINERYAVOID ACCIDENTS MOST ACCIDENTS, WHETHER THEY OCCUR IN INDUSTRY, ON THE FARM, AT HOME OR ON THE HIGHWAY, ARE CAUSED BY THE FAILURE OF SOME INDIVIDUAL TO FOLLOW SIMPLE AND FUNDAMENTAL SAFETY RULES OR PRECAUTIONS. FOR THIS REASON MOST ACCIDENTS CAN BE PREVENTED BY RECOGNIZING THE REAL CAUSE AND DOING SOMETHING. ABOUT IT BEFORE THE ACCIDENT OCCURS. REGARDLESS OF THE CARE USED IN THE DESIGN AND CONSTRUC- TION OF ANY TYPE OF EQUIPMENT THERE ARE MANY CONDITIONS THAT CANNOT BE COMPLETELY SAFEGUARDED AGAINST WITHOUT INTERFER- ING WITH REASONABLE ACCESSIBILITY AND EFFICIENT OPERATION. A careful operator is the best insurance against an accident. The complete observance of one simple rule would prevent many thousand se ous injuries each year. That rule i Never attempt to clean, oil or adjust a machine while it is in motion, NATIONAL SAFETY COUNCILdevonnciie aw EQuiPMetecums veg prop mas aye a a (a0 wr er uns tea Arley twa wae may 1239 veto, ug seg 5 gaa wai a SRST RY Bes Rah Tiny St ab 1 meu Mao weno Hu os aoviovs Me (omens sovaNm soos 2a