1939-1953 McCormick Farmall H/HV Tractors OEM Service & Repair Manual (+ Owners Manual & Parts Catalog)

FARMALL H & HV SERV1CE Introduction· . ............ . .... .................................. . .... . ...... .. .. . ......... . 3 Brief Description!! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Serial Number Identification .... ..... . ........ ... .... ... .. . .. ...... ......... . ... . .. .. . .... . . 8 Description· .. .. . .. ....... ·9 "PIston Assembly .... . .. .. 11 CyUnder Sleeves .... . .... 12 Crankshaft . ...... .. . .. .. 13 Timing Gears ........ . .. 14 Cylinder Head · ...... .. .. ·10 Valves ... · .... .. .. ... .. .. 10 Connecting Rods ... ..... 12 Camshaft . .. .. ... . .... .. 14 Magneto· · ·· · ·· ·· · ··· ·········· · ·· ···· ··· ·· ·· · ······ · ········ · ············ · ·· · ·· · ···· ····· 15 Spark Pings · .. . ........... .. ...... ... .. . ... ..... ... . ....... . ... . .. .. .. ... .. .... . .. ...... ... 15 Desc.rlption .. ... ....... ... ... . .. .. .. ...................... . ... . ...... . , .. ... ........ .. ... .. 17 Service- .. ... ..... . ....... ... ... .. .... .. . .. .. .. .. .. .. ... .. . .... . ... . .. .. ..... . .. . .... . ... .. 18 Gene ' rator ............ . ............ .. ..... 19 Cutout Relay ... ..... . ........... ... ... . .. \9 Starting Motor ....... ..... . ........... .... L9 Description .. .. ... . ............. . ......... 21 Thermostat. . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. 21 Radiato.r . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. 21 Description ... .. .... ... ....... . .. . .. .... .. 24 Manifold ... ...... • ... .. . ..• .. ........ ... 24 Carburetor ... ... ... ... .. .. ............... 25 Battery ' ......... . .... .... ... . ..... ..... 20 Lighting Switch · . .. ........... .. .. ... .. 20 Flywbeel Ring Gear · .. ... ... . .. ..... .... 20 Heat Indicator . .. .. .. ....... . ... ......... 21 Water Pump . . . ... . .. . .... ... ... .. .. .. . 22 Engine Governor ... .•... .. .... .. . ... . ..... .. 29 Governor Control . ... . ...•... .... .. ........ 32 AJr Cleaner · ... . ....... . ...... ....... .. .. 32 Service Charfs .' .... . ......... ..... ... .. .. .. .. .. . ..... •. ... .... Center of Book Adjustment ............. . ...... ........ .. . ... . .. .. .... . ........ .. ..... ... .. .. .. ... .. ... .. . ]3 Inspectioll .................. • ........ . ...... ... ....... . ..... .. . .. . .. . ...... ... .. .. . . • . . . " 34 Removal and Assembly· ... .. ............. ........ . ................ . .... .. ... . .. . .. .. .... . ... 34 Description .. .. .. .. ..... .... ........ . .... .. ..... . .... . ......... ... ... .. .. .. ... .. . .... . ...... 3S Removal .. ..... .. ..... .... .. . .. . .. . .... .. ..... . .... . ......... ... ... .. .. .. ... .. . .... . ...... 36 Assembly . ... ... ....... . ... .. ............ ............ ...... ... ........ . .. .... . .. ... . .... ... . 36 Differential .. .. ... .... ... ... .. ....... .. ... .... ........ • ... ...•..•... . ... .... ... ...... • .. 37 Brakes ·· ···· ·· .......... .. ... . ... .... . ... .. . ....... .... . .. .... .... . ... . .. .. ... ... .. . ... 37 Tranamiulon and DifferentJal Pinion and Gear· ... . ....... . .. . •. .. ....... ... ....... . .... .. . 39 Belt PuUe y Bevel Gear ..... ...... . .. . .. . .. ..... .. .. ........ .. ... . ... . ....... .. ... .. . .... 40 Cellerai I nformation· . ... .. ..... ...... .. .. .. .. ... ... .. ... ... . ...... ... .... . ... .. ..... . 41 Frame· ........ ... .. .... . .... ... ..... . .. 42 F ronj Wheels· .... .. .... ... ... .. .. .. .. ... 43 Fr ont Axle · ...... ... .. .. ... ... .. . ....... 42 Rear Wbeels .... ........... ....... ... .. · 43 Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Pneumati c Tires· .. .... . ... .... .. .. .. . . 44 Steering Gear· ... .. ... .... . ...... ... 43 Belt PuUey ... . ... . .. . .. .. ....... . .. .... .. . .. .. .. .. .. .. ... .. . .... . ... . .. .. ..... . .. . .... . ... . 45 Power Take-Off · ............ . •. . .. . .......... . ..•. ... ..... ..• .. .. .. .. .. .. .... .. .. ... ...• .. . 4 6 Tractor Part N umbers ·· ..... .. .. .. .. .. . ....... .. .. .. . .. .. ... ....... .. .. .... .. ... ... .. .... . 47 U-4 'Part N umbers . ....... ... ... . .. ..... .. .... .. .. . ..... . ..... •. ....... .. .. ..... .. .. . .... .. 48 F armall-H Tractor ......... • .......... • ... 49 U-4 Power Uoit .. · ........ · ........ ... .... 55 W-4 Standard Tractor ..... • .......... •... ·51 1-4 Industrial Tractor· .................... 53 1 U-4 E ngine-Over -Axle Unit · . .. ... .. .. .. . 56 Farmall-H and 4 Series Englnu .. .. .. .. 57 INTRODUCTION AND BRIEF DESCRIPTION ENGINE IGNITION SYSTEM ENGINE LUBRICATION SYSTEM ELECTRICAL EQUIPMENT COOLING SYSTEM FUEL SYSTEM AND AIR-CLEANER Service Charts ENGINE CLUTCH TRANSMISSION DIFFERENTIAL AND BRAKES SETTING BEVEL GEARS CHASSIS ATTACHMENTS DIMENSIONAL DRAWINGS

FARMALL-H AND 4 SERIES lIIust. 1. Fannall-H with Belt pulley and Lift-All pump . It Is shown with 10-38 tires on the rear, 5.50 x 16 on the front. lIIust. 2. The W -4 Standard tractor equipped with belt pulley and pneumatic tires, 13-26 rear and 5. 50 x 16 front. 2

INTRODUCTION This is one of a series of instruction manuals designed to assIst in the training of student servicemen. It is a source of up-to-date information for Blue Ribbon Servicemen, giving recom- mended procedures for servicing Inter- national Harvester equipment. Specifica- tions and other data included in this manual are designed to serve as a sales help to dealers and salesmen who use service information to point out the outstanding features of their merchan- dise . The machines described in this manual are the Farmall -H t ractor, the FarmalI-HV tr actor, the W-4 standard tractor, the 0-4 orchard and grove tractor, the OS-4 orchard tractor , the 1-4 in du s tri al wheel tractor, the UA power unit and the IU-4 engine - over-axle unit. These have been assembled in a single book because of the many features they have in common They all have the same 4-cylinder, carbureted, valve-in-head engine with 4-3 / 8-inch bore and 4-112- inch stroke and therefore have approximately the same horsepower . All the en- gines have approximately the same fuel and ignition systems . The clutch, transmission , differential and final drive, ' as well as belt pulley and power take-off, are very much the same on all the tractors. BRIEF DESCRIPTIONS Farmall-H Tractor Farmall-H is the medium- size t r act 0 r of the Farmall line. It will pull tvvo 14-inch bottoms in most soil conditions , cultivate two rows with ease and handle any other 2---lUW' equipment. Its transmission provides fi vo forward speeds- four working speeds and one road speed-- and one reverse; when equipped with steel wheels thc fifth or road speed is locked out. This range of transmission speeds, together with the manually controlled, variable-speed governor, rn:Ikes it possible to select the most economical engine speed for whatever type of wed<:. is being done. Farmall-HV Tractor Farmall-HV IS a high-clearance tractor for wOlk in crops planted in high beds. It is especially adapted to crops such as asparagus and sugarcane in which cultivation is continued until the plants have reached co n siderable height. The lowest poin t on the Frumall-HV is under the front axle where the ground clearance is30-1I2inches . Rear axle and housing assemblies re- placing t hose of the Fannall-H r a i s e the Blust. 3. The high clearance FarmaU- HV.

FARMALL-H AND 4 SERIES rear of the Farmall-HV 10-27/32 inches . Roller chains running in oil are used for the final drive. The pneumatic rear tires are of special canefield design with high lugs. The front axle is a wide, arched 1- beam pivoted on a bolster attached to the underside of the tractor. W-4 Standard Tractor The W-4, the smallest of the standard four-wheel farm tractors, is used on farms where a row-crop Farmall tractor is not required; on row-crop farms it is also used as a supplemental tractor for pulling trail-behind machines. The W-4 \Nill handle medium-size pull-behind and belt driven machines with ease and effi- ciency. When equipped with rubber tires it has five forward speeds and one reverse; the fifth, or road speed, is locked out on tractors with steel wheels. Afriction-type governor control makes it possible to change governed engine r.p.m . to any desired speed between 900 and 1650 r.p.m. 0-4 Orchard and Grove Tractor The 0-4, the smaller of the O-type tractors, is a modification of the W-4 adapted to the needs of the fruit grower. It is streamlined so that it has no pro- jections or crevices to catch branches or tear off fruit when operating close to the trees. Although completely shielded the tractor is easily serviced. The hood side sheets can be raised or entirely removed by pulling out the hinge pins. The steering wheel cowl and the crowned fenders are also easily removed if nec- essary. The seat is low slung and the steering wheel and controls relocated accord- ingly. A hand-operated overcenter cl utch is used in place of the foot-operated spring- loaded type used on the W-4. This feature makes it possible for the operator to stand while driving. The first and reverse speeds are lowered to meet the fru it grower's special requirements. The 0-4 has the same friction-type governor control as the W-4 . Hlust. 4. ' [be 0-4 On:hard and tractor. 'Ibe steering wheel cowl is special equipment. '1be 08-4 0rchanI tractor (not illustrated) has standard W-4 fenders. 4

BRIEF DESCRIPTIONS on. GAUGE H EAT !N()l(ATOlI Illust. 5. Rear view of 0-4 tractor showing controls. power take-off is special equipment. OS-4 Orchard Tractor The CS-4 is the sarre as the 0-4 except for the fenders. In place of the more elaborate hood side sheets, cowl and rear fenders it has the simpler type of fenders used on the W4. 1-4 Industrial Tractor The 1-4 is the second in size of the industrial line, t he Internatio nal-A being the smallest. This tractor is designed for a wide variety of jobs in construction, maintenance, materials handling and transportation. In modified fonn it is the source of power for rran;y types of industrial equipment such as light main- tainers, front-end shovels and loaders, road rollers, sidewalk snow plows, brushes and sweepers, trailer trai ns and mowers. It is similar to the W4 except that it has dif f erent speeds. Gear shifting is also different in that the second and third speed positions are interchanged . A clutch brake is provided for rapid shifting of gears. In addition to a Illust. 6. The I-4 tractor. The exhaust muffler, belt pulley and lighting equipment are special equipoent. 5

FARMALL-H AND 4 friction-lype go ernor control lever a' on the W-4, the 1-4 also is equipped with l ac elerator. The re r ,heels arc of hcavy ca t- ir n construction to give added weight for maximwn tra tion and are adaptable for mounting duaJ tire .. The 1- ha a wivel-mounted and spring- cu hi ned pintle hook in place of the n t dr bar used on the W-4. A hit b point al 0 provided on the front bol ter. U .. 4 Power Unit The U-4 power unit is the second smallest in the p weT unit line. To meet trade r quir ments this unit is built in 8 b unit: 1) engine, (2) foot- tyPe ba radiator fan and connec- t1 ns. air cleaner and conm:::cli us 5 engine controls (6) clutch, clutch control d power take-off (7) engine hood and r ar hood sheet, (8) fuel tank and onnection see illustrations page 7 . Ea h b ic unit is furnished inde- pendently and can be attached or Temo ed with u interfering with the other units . mbin ti n of all the units makes a complete power unit ready for any pow job. TIle ot-type base is of compact and S lrdy nstructi n, consisting of a front support mounted .in trunnion on the crankcase front cover and a low-slung rear support bolted to the bottom of the flywheel housing. The eL tank is attached to the top of the flywheel housing. The oil pres- sure gage i connected directly to the right side of the crankcase. The engine gov mor control i conveniently located n tb Left ide of the flywheel housing t sure a minimum of interference when tta c hing or detaching the rear hood h et. The radiator grille is easily re - mo ed by 100 ening four fasteners and the radiator cap . The radiator is mounted n the front upport. The air cleaner is m unted on the left side of the motor n independent unit. Th flywheel i tandard for lO-inch , sing! - plute, Ro ford overcenter clutch bUL a ' pring-l aded clutch or stub shaft an be nached to saD1e flywheel. The slarting ring ge r is standard. The tly- wheel h using is S.A.E. No. 4 and carries 4- iucb power take-off shaft, 1-7116-inch d' iam ter with 3/8 x 3/8 x 3- inch key. IIlu t. 7. Tbe power ... complete whh ba . e, radia tor and faD. air deaner, con- trDI. IUtcb. pow r t ke · off, hood and fuel t ank. 6 . __ u.. N:i'iiiD: UlnTc:>!O,. _ CYLJ ___ c.... ;... - ... -- 1 1- . -1- 1-""1' 0 .. l..- ...... \It": F;;' .. .. oJ ..; :> .. 0 ... '" .. . >- I- 1-1- f-- 0 .. I- 0 I-r- 0 .. ... - It .: .. 1-' . 1- . ' 1- 1-+- .... '1 .. II 1-1- - 0 = 1-1- Sl'ao .. .• ..,.IiL..+ .. • I • .... 0 :e 4 • '" • J .. .. • n V" I-If . f- It I- .- i ... r-... r--. I I I I I I _I I I J _I I I I I I I 1 I I .. .. • .. i4 III u ... 8. Partlonn .. nc... curves of' U-4 (><n"""" UIlJt op .. tin!!: on C" aline. Fuel consw:nption Is with th tlngln op rntlng under Vl\riuuS luu.d llt L800 r.p.m.

ffiUJt 9. The U-4 engine (pao&o) with air cleaner. mUII.10. The U .. Hoot-type buc. . : -::p ruwt. 11. Tho lJ.4 governor throttlfl control BRIEF DESCRIPTIONS 7 IUu!t. 12 The U-4 with radiator, ovcrcenter clutch and povnr take-oiE Illust. 13. The U-4 with hood sheet le88 fuel ta.nk. u lIJICd for natural au operation In out- door insWlationJ. lIIu st. 14 . View of fu 01 tlll.k (shaded) on complete lJ.4 unit.

FARMAll-H AND 4 SERIES IU-4 Engine-Over-Axle Unit The IU-4 consists of a complete U-4 power unit mOilllted on the cover of an 1-4 tractor power train which consists of the transmission, brakes, differential and rear axles. The engine is set for a governed ' operating speed of 1.650 r.p.m, instead of 1800 r.p.m. at which the U-4 is regularly set. This unit is adaptable for mOillltiug in power graders and similar allied equipment. The first 100 units manufactured had Farmall-H transmissions with special modifications. The standard power take -off of the U-4 is keyed (3/8 x 3/8 x 3 inches) and the shaft is 1-7/16 x 4 inches. The drive for the transmission is flanged to re- ceive a pulley or other type of driving attachment. The bearing cage at this point has increased bearing sizes and the rear ax1c housings are of special design. A standard 10-inch, spring-loaded clutch is used, the same as on FarmaJl-H and the W-4 and 1-4. Serial Nmnber Identification Each machine carries both chassis s e - rial numbers and engine serial numbers. Prefix letters indicate the unit model, such as Farmall-H, W-4; 0-4, etc. Suffix letters indicate any attachments or special features such as low-speed gears, high-altitude pistons, etc. When a service report is made it is therefore 0 f utmost importanc e to furnish a 11 numbers and also to supply the number of the magneto if it is at fault. Machine H&HV W-4 0-4 1-4 Chassis Serial Ntnnber FBH-50I &up WBH-501 &up OBH696 &up IBH-1478 &up Engine Seria1 Number FBHM-501 & up WBHM-SOI &up OBHM-501 & up IBHM-501 & up U-4 UBH·501 & up UBHM-501 & up IU-4* I IUBH-501 & up IUBHM-S01L & up * 1U-4 transmission serial nmnbers are EUBH-501 and up 8 Illust. 15. The IU-4 E. ngine-Over-Axle unit. IN'f'OllIIAr MOOU. 1tJ:..4 ro'YJtR U,..l" l )fl; .. '_i f 11 o.l .. , ... ' ... R .P M . STANDARD HEr POWER C1JRVE.S C¢mbUSb 'O<1 Engine Insl lulol ., .... r. E>rroo/';lo,d ro le-e ""eY1Il ( :!9 9 HOI) ,a.-d ro F a.; , IIlust. 16. IU-4 engine performance curves.

1939-1953 McCormick Farmall H/HV Tractors OEM Service & Repair Manual (+ Owners Manual & Parts Catalog)

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