Case IH 284 Tractor Complete Workshop Service Repair Manual

SHOP MANUAL SERIES: 274 & 284

SHOP MANUAL INTERNATIONAL HARVESTE:R ', SERIES 274-284 Engine serial number is stamped on right side of engine crankcase on diesel series and on left side of engine crankcase on non- diesel series. Tractor serial number is stamped on name plate attached to right side of clutch housing of all series. INDEX (By Starting Paragraph) BRAKES Bleed ............ . ....... ................ .......... . Parking Brake ...................................... . Pedal Adjustment .................................... . R&R and Overhaul ......... ............. ....... ...... . CARBURETOR (Gasoline) ...... ... .................... . CLUTCH, ENGINE ... .. ...... ........ .... ......... : .. . COOLING SYSTEM Fan ... ... .............................. .... ....... . Radiator ............................... . ........... . Water Pump .... . .............. ... .......... . ....... . DIESEL FUEL SYSTEM Filters and Bleeding .................. .. ... .. ..... .... . Injection Pump and Drive ........... ... ... . ..... . ... . . . Injection Pump Timing ........ .. ................ .... .. . Nozzles .... .. .................... . .............. ... . DIFFERENTIAL . .................................... . ELECTRICAL SYSTEM Alternator and Regulator ............ ... ........ . ... . . . Standard Ignition ... ................... . ....... ... ... . Starting Motor .......... .. .. .... . ........ . ' ...... .... . 2 274 Diesel 154 158 153 155, 157 121 110 108 113 91 93 93 96 138 115 117 284 Non-Diesel 154 158 153 155, 157 88 121 109 108 112 138 115 118 117 284 Diesel 154 158 153 155,157 121 110 108 113 91 93 93 96 138 115 117

INDEX CONT. ENGINE Cam F'ollowers .. ....... . ....................... . ... . . Camshaft .. . .......... . .. ........ .. .. .... . .... ...... . Connecting Rods & Bearings ... .. ........ . ......... . ... . Crankshaft ... ... ... ........ . .... ..... .... .. ... .. . .. . Crankshaft Oil Seals ............. ... ... .. ........ . ... . . Cylinder Head .. ... .... . .... . ... .. .... . ........ .. ... . . Cylinder Sleeves .. ....... .. .. ....... .. .. .. ........... . Engine Removal .... .. . ... ...... . .... .. . .......... .. . . Flywheel . .. .. . ........ . ... .. . .... ... . .. ..... . .. .. .. . InjecLion Timing ... ... .. ............................. . Main Bearings . ............. ....... .. ... . ...... ... ... . Oil Pump ...... . ..... .................. . ..... . ..... . . Pistons & Rings ....... .. .. ..... . ... . ... .. ....... .. .. . Piston Pins .. .. ....... ..... ......................... . Piston Removal ... ...... .......... . .. .. . ........... . . . Roc ker Arms . .. .. ............. ... . .. . ........... . .. . . Timing Gear Cover . ..... ... . ....... ... .. .... .. ....... . Timing Gears ...... ..... .. ... . ......... . ... . .. ...... . Valves and Seats .... . ............. ... .. .. . ... .. ... . .. . Valve Guides & Springs .. ... ... ...... . ..... .. . ....... . . Valve Timing ..... .... . ........................ . .. .. . . FINAL DRIVE Dr op Housing . ..... ... ... .. ........ . .... .. .. . ... .... . Planet Assembly .. ..... . ............ . .... ... . ... . ... . . Remove and Reinstall ....... ... .. ..................... . Wheel Axle Shaft ........ .............. .. .. .. ... .. . .. . FRONT SYSTEM All· Wheel Drive . ....... . ........................ .... . Axle Center Member ... ......... . .... . ... . ....... .... . Steering Knuckles .... .. ... ... . ..... .. ... .. .. . ..... .. . TieRods . .... .. ..... .... . ........ ........... .. .. .. . . GOVERNOR (Non-Diesel) ...... ... ............ .. ...... . HYDRAULIC SYSTEM Auxiliary Valves .......... .. .... ... . ... .. .. .. .. .. . ... . Control Valve . .................. .. ... . ... . ...... .... . Cultivator Lift Cylinder .. . ..... . ..... ......... ... . ... . . Fluid and Filter . ..... .............. ... . .......... ... . . Lift Unit, R&R & Overhaul .......... ... . ........... . . . . Pump ... . ... ...... ......... . .... . .... . .. . ... .... ... . Test Relief Pressure .. ... ... .... .. ...... . ....... .... .. . POWER STEERING SYSTEM Flow Divider . . .. .. ... ... ...... . ............ . ........ . Lubrication & Bleeding ........ .... .. ....... .. . ... .. .. . Op e rati onal Tests .......... ... .... ... .. . .... .. .. ..... . Pump .. .. ... .. ... .. .......... ...... .... ... .. ... .... . Steering Gear .. . .. .... ..................... ...... ... . PTO R&R and Overhaul . . . ........... ... ... . .. .... .. .... .. . STEERING GEAR (Manual) ....................... ... . . TRANSMISSION All· Wheel Drive Gear Train ...... ... .............. ..... . R&R and Overhaul .. .. .... .. ...................... .. . . 274 Diesel 65 76 80 81 82 62 78 61 84 71,93 81 85 78 79 77 67 69 70 63 64 68 149 148 150 1 4 3 173 169 174 165 170 172 166, 167 160 20 130 284 Non-Diesel 44 50 54 55 56 41 52 40 57 55 58 52 53 51 46 48 49 42 43 49 147 143 143 2 5 3 104 173 169 165 171 172 166, 167, 168 37 26 27 31 35 160 21 130 284 Diesel 65 76 80 81 82 62 78 61 84 71,93 81 85 78 79 77 67 69 70 63 64 68 147 143 143 6 2 5 3 173 169 165 171 172 166, 167, 168 37 26 27 33 35 160 21 126 130 3

CONDENSED SERVICE DATA GENERAL Engine Make ....................... . Engine Model .... .. ... ...... . ...... . Number of Cylinders ..... ........... . Bore-mm .. ....... .......... . ... .. . Stroke-mm ... ..... ............... . Di splacement - Cubic centimeters ..... . Main Bearing, Number of .... .. .. .. .. . Cylinder Sleeves .................... . Forward Speeds ... . ......... ....... . Alternator and Starter Make ......... . TUNE-UP Compression Pressure (2) ... .. ....... . Firing Order . .. ........... ..... .. .. . Valve Tappet Gap (Hot) mm Intake .. ... .. .................. . . Exhaust .......... ...... ..... .... . Valve Seat Angle (Degrees) Intake .... _ ..................... . Exhaust .. .......... .. ...... .. ... . Timing Mark Location ............... . Ignition Distributor Make .. .. ....... . . Breaker Contact Gap (mm) ........... . Distributor Timing ............ ...... . Spark Plug Electrode Gap (mm) . ...... . Carburetor Make (Gasoline) ...... .. .. . Injection Pump Make ................ . Injection Pump Timing ..... .. _ ..... . . Battery Terminal Grounded . ...... ... . Engine Low Idle Rpm ........... ... . . Engine High Idle Rpm, No Load ....... . Engine Full Load Rpm .. .... ......... . (2) Approximate kPa, at sea level, at cranking speed SIZES - CAPACITIES- CLEARANCES Crankshaft Main Journal Diameter , mm Crankpin Diameter, mm ............. . Camshaft Journal Diameter, mm No.1 (Front) . ......... .. ......... . No.2 ...... . ... .... .. .... .. .. .. .. . No.3 .. ........................ .. . No.4 ...................... .. .... . No.5 .......... . .. . .. ............ . Piston Pin Diameter, mm ............ . Valve Stem Diameter, mm Intake ...... . ................... . Exhaust .............. . .......... . Main Bearing Diametral Clearance, mm . Rod Bearing Diametral Clearance, mm .. Piston Skirt Diametral Clearance, mm .. . Crankshaft End Play, mm ......... . .. . Camshaft Bearing Diametral Clearance, mm ... ... ... . .... . .. .. . Camshaft End Play, mm . .. .. ........ . Cooling System Capacity - Liters ...... . Crankcase Oil- Liters ... .. .......... . Transmission and Differential - Liters .. . Front Differential Housing (All Wheel Drive Tractor) - Liters .... . Clutch Housing Case (All Wheel Drive Tractor) - Liters ... .. Front Final Drive Housing (All Wheel Drive Tractor) - Liters .... . Rear Axle Final Drive - Liters ..... ... . 4 274 Diesel Nissan SD-16 3 83 100 1623 4 Dry 8 Hitachi 2944 1-3-2 0.3-0.4 0.3-0.4 45 45 See Para. 93 Bosch "A" See Para. 93 284 Non-Diesel Toyo-Kogyo M471G 4 70 76 1169 5 Wet 8 Mitsubishi 1165 1-3-4-2 0.25 0.25 45 45 Crankshaft Pulley Mitsubishi 0.45 ± 0.05 See Para. 119 0.8 Nihon Kikakki ---------------------Negative 700 2760 2600 70.90-70.92 52.91-52.93 45.45 43.91 41.23 25.99 7.97-7.99 7.94-7.96 0.15 0.15 0.29 0.06-0.14 0.03-0.09 0.08-0.28 7 5 13 1.4 650 ± 50 2950 ± 50 2600 55.944-55.959 44.940-44.955 47.899 45.899 44.899 43.899 42.899 19.984-19.993 6.95 6.95 0.025-0.050 0.027-0.073 0.030-0.069 0.110-0.274 0.15 0.02-0.18 5 3 13 284 Diesel Nissan SD-16 3 83 100 1623 4 Dry 8 Hitachi 2944 1-3-2 0.3-0.4 0.3-0.4 45 45 See Para. 93 Bosch "An See Para. 93 700 2760 2600 70.90-70.92 52.91-52.93 45.45 43.91 41.23 25.99 7.97-7.99 7.94-7.96 0.15 0.15 0.29 0.06-0.14 0.03-0.09 0.08-0.28 7 5 13 2.7 2.7 0.9

SERIES 274-284 FRONT AXLE SYSTEM AXLE MAIN MEMBER Model 274 I. The axle main member pivots on pin (23- Fig. I) which is retained in the mounting bracket (front. sub-frame) by set bolt (24). The two pre-sized axle pivot pin bushings (25 and 26) pressed l nw axle main member can be renewed after removing axle main member from t ractor', To remove the axle assembly turn front ..... heels all the way to the left. then dis(.'onnect tic rods from pitman urn (91. Raise front of tr aclor until front wheels arc clear of ground. Support tractor under side rails wi th suitable jack st.1.nds. Remove front wheels. Loosen locknut on set bolt (24) then remove set bolt. Place rolling noor jack under center of axle. Drive pivot. pin (23) fo rward with a brass drift and remove from axle. Lower axle assembly enough to clear sub-fr.!me, then roll axle forward away from tractor. Renew pivot bushings (25 and 26) if clearance between pivot pin (23) and bushings exceeds 0.3 mm. Reinstall by reversing the removal procedure. Torque setbol t(24) in pivot pin mounting to 58-73 N· m. Torque tie rod slotted nuts (II) on pitman arm to 49-69 N· m. Torque wheel mounting bolts to 98-1 23 N· m. Adjust toe·in if necessary as out· lined in parab'Taph 3. Mode l 284 2. The axle main member pivots on pin (3- Figs. 2 and 3) which is relained in the mounting bracket (front sub-frame) by set bolt (4). The two pre·sized axle pivot pin bushings (10 and II) pressed into axle main member can be renewed after removing axle main member from tractor. To remove the axle assembly, rai se front of tr actor until front wheels are clt'ar of ground. Support tractor under side r:iils with suit.able jack stands. Remove front wheels. Di sconnect ste€r- jng link from stl.'t'ring arm (15). Loosen locknul on set boll (4) and remove bolt. On Model s (S .N. 011793 and above) remove grease liuings (13 and 14 - Fig. 3). Install a slide hammer in pivot pin (3 - Fig s. 2 and 3) and ]lull pin from axle assembly. Lower axle assembly enough to clear suh-frame. then roll axle forward away from trnctor. Henew pivot pin bushinl,,>"S (10 and 11 - Figs. 2 and :~) if clearance between pivot pin and bushings exceeds 0.3 mm. Reinstall by reversing removal pro-- cedure. Torque set bolt (4) 0058·73 N ·m. Torque steering link slotted nut to 49·69 N . m. Torque wheel mounting bolts to 98-122 N·m. Adjust toe-in if necessary as outlined in paragraph 3. Fit. 1- flfplod.d , 1. 111' 01 Itonl ul ..... mblr lI .. d on Mod.,274 on .. , tl .eIOrl'. I. -no rod"~ lUI. 2. Sd bolt . """,,", 4. Tie rod t~ R.lI. &. Jam nul 6. Tie rod ~nd R.II . 7. Nut 8 . WaoIwr 9. Pitman ann LO. Pin LI. Nul L2. T~ rOO fro:! 1-11. 13. Jam nul 14. Tie rod tub<> L.II. If •. Scot bolt 16. Lodmlll 17. Tie rod MI<'f>IIion 1..11 . 18. KfY 19. Sttmng ~ R_H. 20. 8uobine (upptr) 21 Axle ~n~ R't\>On 22. Axle~R.H. 23. PIv<JC • Paragraphs 1-3 TIE RODS AND TOE-IN All Models Except AII·Wheel Drive 3. The procedure for removaJ and disassembly of tie rods on aJl models is 13 ~ 26 14 24. Set:J:" :u.. ~ ~ Bushir« n. "'" 2:11 • .ult' •• t.o-nsiooo LH . :29. a..nll(~' 28 3~~ 33 3 t:(l;'r@ 30. Thrust~ :u. K....-kIo- "- ,.., 3S. lltannc (in...... 34. lIub "- "'" 36. Bearinc !wI .... ' 37. WMho. 38. Nut " .... ... eo, Fig. 2_ElIplodH ,I.w 0/ lront ul • .... mbl' "' H on Mod.1 284 tr,clot' (S.N. OU7113 end ""0111' , .qlll pptd III' ltl! non-dl ".'.ngln •. I. Sub Ir ..... 3. Pivot: pin 4. SeI. bNt :. . K<')' . . ...... 1. llushilllll ("l!Jlt1'1 .""" Y. AU! rmt.-r OKIion 10. 8..ming II . ButI>in&' L4. Grnse fittiro« L5. Slm'i"l '""' 15. AU! '""tmsio ... {LH.1 17. 8uohinl"'""" 18. 'ThnIM .-ariII« 19. li nud<le I_H 2(1. SI.....,~."" I..H. tl K~) 2:l. So", 1 ~l. Sea) ~4 ~v'''' /'n ...... ~:,. lIuI, ~7. ~I""h'rl ~. W""""r :l!I. :->UI 30 G...k.t al Qr,'(', 5 6 ~ 8 -<> 7 9 36 37 I ~ 38 39 \ 40 ~-- 3 5

Paragraphs 4-5 INTERNATIONAL HARVESTER obvious after examination of the units and reference to Figs. 1,4 and 5. Tie rod ends are non-adjustable and faulty units will require renewal. Adjust toe-in on Model 274 tractors tI:I 6 mm and 4 to 10 mm for Model 284 tractors. Adjustment on Model 274 tractors is made by separating the ball joints from pitman arm and turning ball joints in or out as necessary. When properl y ad· justed, reconnect bal l joints to pitman arm and tighten slotted nuts to 49·69 N· m torque. Install cotter pins. Adjustment on Model 284 tractors is made by releasing set bolt on tie rod and lengthening or shor tening rod as necessary. When properl y adjusted, retighten set bolt. STEERING KNUCKLES AND HUB Model 274 4. To remove either steering knuckle (3I-Fig. 1), Taise front of tractor and remove wheel. Unbolt knuckle arm (19) and tap knuckle downward using a brass drift. Retain key (18). Remove knuckle from bottom of axle extension. Inspect upper and lower bushings (20 and 29) for excessive wear and, if necessary remove usi ng a slide hammer and puller. New bushings should bottom on shoulder inside axle extension tube. Inspect thrust bearing (30) for wear and renew if necessary. Remove hub and wheel bearings (items 32 through 40) , inspect for wear and renew as necessary. Use new seal (32) upon assembly. Reassemble steering knuckle and hub by reversing disassembly procedure. Lubricate steering knuckle through fit- ting on rear of axle extension tube with good grade lithium grease. Pack wheel bea rings up on assembly. Tighten knuckle arm damp bolt to 64-73 N· m. Tighten hub slotted nut to 79 N· m and install cotter pin . Mod.1264 5. To remove either steering knuckle (19 - Figs. 2 or 3), raise front of tractor and remove wheel. On Model 284 (S.N. 0 11 793 and below), disconnect tie rod from arm (20 - Fig. 2). Disconnect steer· ing link from knuckle arm (I5-Figs. 2 or 3). Unbolt knuckle ann (15) and tap knuckle downward and out of axle extension tube (16) using a brass drift. Re- tain key (5). Inspect upper and lower bushings (7 and 17) fo r excessive wear and, if necessary, remove using a slide hammer and puller. New bushings should bottom on should er inside axle extension tube. Inspect thrust bearing (I S) and oil seal (8- Fig. 2) for wear and renew as necessary. Remove slotted nul on hub spindle and using a suitable puller remove hub assembly (items 22 through 31 - Figs. 2 ! l cf '--.,, 3 4 10 •• ,~15 ..,.. -"'e:"'tI 13 ~---' '~" 16 14 ------ " , ~~.. • / 11 22 24 ~?-- ~18 25 26 / /T'Il(f·~ t 19 21 28 29 1,\ ~ 30 31 6 and 3). Inspect for wear and renew com· ponents as necessary. Use new oil seal!! upon assembly. Reassemble steering knuckle and hub by reversing disassembly procedure. Lubricate steering knuckle through fit· ting on front of axle extension tube with good grade lithium grease. Pack wheel bearings upon 8ssembly. Tighten knuckle arm clamp bolt to 64·73 N· m torque. Torque slot ted nu ts on tie rod and stee ring link to 49-69 N · m. Install cotter pins. Tighteh slotted nut on hub spindle to 49-98 N· In torque. Install cotter pin and hub cap. Torque wheel mounting bolts to 98-122 N· m torque. Fig. 4_EJ.pIoded fie,. 0' .lMrlnt IlMi ... 011 ",061' , ... ',acton (S. N. 011 7t! .1Id "Jowl ",ulpped ,.11/, IHIft-dle• ., 'II{/III'" l. PiurwI &ml 5. Sol. ~ 2. Dnoe ~nk 6. S&-'nr ....... 3_ '!'I."""ond 7. ~ ..... 4 Adjuod".. tit r9d 8. K.y F/rl. 5_ ElCpIodfi/ ~I .. · 01 "Nt/Itg 1I"t. .. 011 MrxHl '14 fraelo,. r.:' N. 0117SN ."d .bore} ~ul~ ..nit IIOII-dl .. " Of dle .. ,.ltglll ... I 1'iI ........ ann ~ On.r Imk 3 'J)o I"Od ond 4 AdjuoQnj,: tJto ,,'01 ~ 5K1roII GS~~...,., ~ SIHrlllll &nil

SE RIES 274-284 FRONT SYSTEM ALL-WHEEL DRIVE Model2841raclors equipped with diesel e nglnel are available n. ·wheel drlye (All · Whe. 1 Drive) unlls. DROP HOUSING ASSEMBLY AND STEERING KNUCKLE Models So Equipped 6. R&R AND OVERHA UL. Any se r· vice to either dr op housing assembly may be per fo rmed without re moval of complete axle assembly. LfaxJe is mounted on tractor, raise front. of tractor and support axle under side to be worked on . Remove wheel, then drain oil (rom bottom plug on rear of housing. If wo rking on L.B. ho usi ng, disconnect steering link (84 - Fig. 6) from knuckle arm (56). Disco nnect tie rod (85) from tie rod arm (66). Remove bolts and separate cover plates (55), packing (54) and back plates (53), noting their locations. Un- bolt and remove tie r od arm (66) along with its needle bearing and rings. Unbolt and remove knuckle arm (56). Retain shims (57) noting number and positions. Attach suitable hoist and remove hous· ing. With drop housi ng assembly removed, unbolt and separate pinion drive cover (80) from drop housing (60). Pry l ock tab ParagraphS (68) from bolts (67), then unbolt and remove bolt lock and bearing retainer (69). Press outer axle shaft (83) out of pinion drive cover (80) from the inside. Remove inner beari ng (70), collar (7 1) and spur gear (75) from cover. Remove pinion shaft (74) and bearings (73 and 76) as an assembly. Remo ve snap ring (52) from pinion shaft and press off in· ne r and outer pinion bearings (73 and 76). Press outer bearing (77) fr om cover. Remove and discard oil seals (72, 81 and 82). Slide ball joint (5 1) from inner shaft and inspect for excessive wear or other damage. If ball joint is defective, unit must be rene wed as an assembly. Howe ve r if disassembly for cleaning is desired, proceed as foll ows: Using a brass drifl, tilt bearing cage until one FI~. 8- E1Iploded ylew 0' - ALL WHEEL DRIVE- 'r01l 181l1e numbly e"ne ble 011 Model 214 '".:10,.. equlp".d WIlli d ln el ell"llIn. I Fron, piW>! hou$in,o; 2 Pi,-", bushln j/ 3 ~,....l . "~ 5 11" .,.1111" r. (;00.• .". 1 ..... k· hou!Oi'lK 8 Plug ~ Gn· ..... ·fininK I II Shat, 11 A'ijuAA.!"1! ""K 12 lkarl "ll I~ PiI(,·,,·I\".1 nnW. It ~Jto~1IT 15 !"in;"" It"ar 16. I~n 11. Thrusl wWt.-, 18. IlMring •• JlI' 19. RinK k>r.~ 20. Si<k·1t"1IT 21. Itin/lW"" 22. l"n o»l!!M1l :1.1. IlearinK ~4. Adj... uinK ring 2',. Il«orinj/ cfII>I' :!II. C:.r,;.., n ~hi .... 2lI."O"ril'lj( :19. F~n""' _ :W. C.~"'r 31 . Oil ot1Il 3'l . HU!lhlnp 33. fk,.., 1''''(>1 ......... ''01 301 . (;t.II", :1:.. !ihlms In .. ~ mml 3/;. B .... ri l1l 37. r ....... :III. W""","r :.19. Nu' ~O. U ... nng 41. (...,.,. 42. }\ellJitljf ~~. 0I1..".j 72. OIl 8e~1 '13. 8wing 74 . Shat\ 75. Go>a.r 76. Hte.riIII: 77. K, .. arinK ;~. GUIM ;9. 1'1u~ ~. C",·tr ~1. Oil "">11 Rt. Sral 83. ~h:on 1!4 . Urnt: link H~. ')'ioo, rod 7

Paragraphs 7·10 ball can be removed as shown in Fig. 7. Repeat procedure to remove all balls. Refer to Fig. 8 and rotate bearing cage until it is 90 degrees (perpendicular) to surface of ball joint case. Roll bearing cage un til its two elongated slots line up with any two opposing teeth of the ball joint case, then lift bearing cage out of case. Turn inner race at a right angle to bearing cage as shown in Fig. 9. Align any tooth of inner race with the el ongated sl ot in bearing cage and roll inner race out of cage. Reassemble ball joint by reversing disassembly procedure, paying attention to the fo ll owing: Inner race must be in- serted in the bearing cage from the nar- row side of bearing cage. When installed, the flat side of inner race must face the inside of ball joint case. The nar - row side of bearing cage must (ace inside of ball joint case. The fi r st bearing assembly installed in ball j oint case must be parallel with the end surface of ball joint case to a ll ow installation of the re- maining bearing assembly. Pack ball joint with good grad e lithium grease upon reassembly. 7. Inspect swivel bushings (59 and 61 -Fig. 6) for excessive wear and renew as necessary. Check inner axle s haft (10) for excessive free play in bushing (48) and renew if necessary. If inner axle is removed for bushing renewal, discard oil seal (49) and renew upon reassembly. Install new "0 " rings (58 and 65- Fig. 6) on knuckle and tie rod arms (56 and 66). Inspect pivoting surfaces, needle bearings (63) and bearing rings (62 and 64) fo r wear or damage. If renewing needle bearing assembly, install rings with chamfered sid es facing away from bearing. Lubricate knuckl e and tie rod arms with good grade lithium grease upon assembl y. 8. Inspect all gears, bearings and shafts for excessive wear or other damage and renew as necessary. If renewing any gears, wso renew bear- FIg. 7 _ Rol.,. be.rllIg ug. III e,/llId" .lId ... mo" bell ••• hOWII. R,~" ro"tloll 10' ... mo'" 01.11 &.11 •• ""'f 10 lut 8 INTERNATIONAL HARVESTER ings supporting the gears andlor shafts. Check pinion dr ive cover and steering knuckle housing for cracks, or wear in bearing bores and renew if necessary. Lubri cate all parts well be fo re reassembling. 9. To reassemble the drop housi ng assembly and steer ing knuckle, first lightly coat the 0 .0 , of new oil seals (72, 81 and 82- F ig. 6) with suitable sewer and in stall in pinion housing cover (SO) and steering knuckle (60). Place pinion housing cover over outer axle shaft (83) and press new outer bear ing (77) onto shaft and into bearing bore in cover until it contacts shoulder in cover. If removed, press new bearings (72 and 76) onto pinion shaft (74). Install new snap ring (52). Install pinion shaft assembly and s pur gear (75) into pinion housing cover. Install collar (71) and press inner bearing (70) onto outer axle shaft. In- stall bearing retainer (69), bolt lock (68) and bolts (67). Tighten bolts to 58-73 N . m and bend lock tabs against flats of bolt heads. Clean mating surfaces of pinion cover (80) and drop hous in g (60), install new gasket (78) then place pinion assembly into drop housing and tap into place with a soft mallet. Install mounting bolts and tighten to 30 N· m torque. Install drain plug. Slide new packing ring (54) over end of axle center housing (7). Slide ball joint (51) onto end of pinion shaft. Pull inner axle (10) out of axle housing and insert into other end of ball joint. Suppo rt drop housing assembly with suitable hoist and start inner shaft a nd dr op housing together into axle housing. Rotate outer axle shaft (hub) to align splines of inner axle shaft (10) and differential side gear (14). In stall knuc kl e arm (56) and new ~O" r ing (58) without shim pack (57) or bolts. Install FIg.'- VI.w .how/lIg ,.mor.' 01 b.1I e.g. lrom b./I jolllt. " .,., to lut I. ~\.Od oIot ti e rod arm (66), ne w ~O" ring (65) a nd I bearing assembly leaving bolts loose. In- I stall knuckle arm bolta and tighten both . knuckle arm and tie rod arm bolts to 97- 117 N·m torque. Place Doo r jack under drop housing' to load needle bearings. Measure gap between knuckle arm and drop housing to determine shim pack. (57) needed to achieve zero end play between drop housing and axle end. Shims are available in 0,2 mm Lhickness. Lubricate grease fittings in knuckle and tie rod arms with gun grease. Bolt back plates (53), packing (54) and cover plates (55) to drop housing. Connect steering link (84) to knuckle arm (L.H. side only) and tie rod (85) to tie rod arm (66) and tighten slotted nuts to 49-69 N· m torque. Install colter pins. Fill drop housing to fill plug hole (79), (0.9 liter ), with S AE 85W-141l multi·purpose gear lube. Install front wheels and tighten wheel bolts to 245-309 N·m. Check oil level in axle cente.· section and add as necessary. AXLE PIVOT HOUSINGS 1 0. R&R AXLE ASSEMBLY. To remove the "All· Wheel Drive" as an assembly, first disconnect the steering link from knuckle arm on L.H. drop housing. Rai se front of tractor, s upport under sul:rframe with suitable jack stands and remove front wheels. Loosen set screw (47-Fig. 6) that secures the drive shaft cover pi pe to rea r pivot hous- i ng. Place a ro lli ng floor jack under the differential housinf~. Remove mounting bolts securing front and rear pivot bous· ings( 1 and 33) to tractor sub-frame. Roll front axl~ assembly forward enough to disengage the dri ve shaft from rear hous ing. NOTE: Do not low.r exl. more thin I. nec .... ry to roll II / orwud or dlmlge to drlv •• hllt Ind r.tl t.d Plrt. may occur. When axle assembly is clear of drive shaft cover pipe. Lower axle and roll away from tractor. 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SERIES 274·284 Insu..nation of axle assembly is the reverso! of removal procedure. Lightly coat sl ,li nes of drive shaft. and coupling • fik'eve~ with Molykote lubricant. Apply Loctit{ 1262 or equivalent to thr eads of IIXle mounting bolts. Torque mounting I:olts to 244 ·307 N· m. Torque slotted rut 011 sleering link to 49·69 N· m. Torque fronl wheel mounting bolts to 245·30~) N ·m. II. R&R AND OVERHAUL PfVQT JIOUS.l NGS. Service of the front and r2ar pi vot housings (1 a nd 33 - Fig. 6) reo <Iuires removal of the comple te axle assemtly as outlined in paragraph 1 0. SCrviCf of the front housing is limited to r ~placemenl of the dust seal (3) and bushinl[ (2). NOTI:: Rlmo .... 1 01 grea •• IIIlIng may be necessary tor (emoul of !tont pivot bu.hln, •. Whcli replacing (ront pivot bushing, line up hole in bushing with grease fit- ting hole. Always install new dust seal. Lubri cE.te bushing wi th multi·purpose Ii :.hium grease. To I 'e move rear p ivot housing (~.3 - FiJ. 6) first drain center housing (7) a 1d remove bolts from housing cover (~5), then using two of the bolts, turn tllem hto jackscrew hol es on cover. Turn b)lts evenly to push cover Crom h' lUsi n!! . Discard gasket (4 4). Using a bl 1l.SS dl-ift, tap gear and bearings (items 4t), 41 and 42) (rom cover (45). Inspect g'~nr Imd bea rings and renew iJ nl!<!essa ry. Remove and discard oil seal (43). Rpm ovl! housing oil seal (3 1) and drive out bushing (32). Drive in new bushing and install new oi l seal. Press la rge lwaring (42) onto input shaft side 01' gear (41) and small bearing (40) onto hnus ing side of gear. Tap bearing and gl: ar as.;embly into bore of housing. I n- :itall ne'N oil seal (43) and cover gas ket 144). th~'n bol t on cover (45) to housing l3l). Fi I center housing (5) to fillllevel 10 -I'I.w tllowl n" P'OC~Il'. 10' ell.dlng prffol d 01 pInIon b", 'n" . A.I., Ig lUI. I :;"rillll: "" .... 2 ' ''1.. 3. 1'1.", plug (4), (2.7 liters), with SAE 86W- 140 multi·purpose gear lube. DIFFERENTIAL 12. R&R AND OVERHAUL. To remove the differential assembly for service, first remove axle assem bl y as out lined in paragraph 10 , then remove dr op housing assemblies as out lined in paragraph 6. Remove front and rear pivot housings as outlined in paragraph 11 . Pull both axle shafts (I O- Fig. 6) out of axle housing. Remove pinion cage (29) mounting bolts , then using two of the bolts, turn them into the jackscrew holes on flange of cage. Tum bolts evenly and push pinion cage (29) from car rier assembly (26). Retain shims (27) and discard "0" ring (28). Attach lifting brackets and a suitable hoist to the differential carrier assembly (26). Remove bolts and lift carrier assembly out of axle housing. Flatten tabs on ring locks ( 19) and remove. Unbolt and remove bearing caps (1 8). NOTE: B •• rlng e.p •• hould b. Ind.xitd lor eorr.cl r ..... mbly . Remove bearing adjusting rings (1 1 and 24 ) and lift differential carrier asse mbly out of housi ng. Unbolt and separate r ing gea r (2 1) from carrier (13) using a soft hammer. Remove side gear (20) and thrust washer (17) from ring gear recess. Remove ring gear bearing (23) using a suitable puller. Remove pin retaining screw in differential carrier (13), then drive out p in (16) and remove s id e and pinion gears (14 and J5). Remove differential carrier bearing (1 2) using a suitable puller. 13. To remove the drive pinion assembly from the pinion cage, remove cotter pin then remove slotted nu t (39 - Fig. 6), was her (38) and gear (37). Press pin ion sha ft (22) out of small bear- A d . L Ii'" ~ • ,j, , • "" 'c , IT J FI" . 11- Cro .. tKllfnI.' dl.",.m g/ pfnkln u". .tId dlll.,.nl l.1 . 1I0wl n" dlm.n,Ion, 10' pinI on mOllnlln" dl. l.ne • . 1f., ,, 10 ptr ."rtptt 15. Paragraphs 11·15 ing (36) and pinion cage (29). Press off bearing cone (25) and retain coll ar (34) and shim pack (35) noting thickness of shim pack after removal to aid in reassembly. Press bearing cups Crom pini on cage. 14. Clean and inspect all part3 (o r ex· cessive wear or o ther damage and replace as necessary. Lubricate all mov· ing parts with petroleum jelly prior to assembly. Press large bearing cone (25) onto pinion shaft (22). Press new hear- ing cups, if removed, into p in io n cage (29). Install collar (34) and sh im pack (equal to one removed) onto pinion shaft. Insert pinion shaft with shims and collar into pini on cage and, using a suitable piece of pipe, press small bearing cone (36) onto pinion shafl Leave pinion assembly on press and wrap a stri ng around pinion cage, then connect a hand spring scale to string as shown in Fig. 10 to measure rolling torque. Slowly app ly pressure to load bearing while pulling on scale. Bearing preload is correct when a pull of 17.6 to 30.8 N under 1.45 tons load is achieved. Add or subtract s him s until co rr e<:t preload is obtained~ Install gear (37-Fig. 6), washer (38) and slot,.. ted nut (39) and tighten nut to 79-97 N· m torque. U necessary, tighten nut to install cotter pin. 15. PI NION MO UNT ING DIS- TANCE. The pinion mounting distance (A- Fig. 11 ), the distance from center line of differential bearings to the pi nion back face, is a NOM INAL 103 mm. Any variation from the nominal is stamped on the face of the pinion and will be preceded by a plus (+) or mi nus (-). This figure must be added or subt racted from the nominal (103 mm) to determine ACTUAL mounting di s ta nce. NOTE: There .r. Ihr ••• els 01 numbe.-. slamped on Ih. pinion g •• r I.e •. Th. whol. number IIgur. I. thl Iletory Iden· tIIle.tlon number and I •• 110 atamped on the outlld. edge 01 the ring gelr. Th. ,.c, ond number Is the v.rl.tlon number (.) 01 pinion mounting nomln.1 dllt.ne. L Fig. 12 -SKtion.' ,I .w t ll o wln " dlm.ntlon 8 r.pr".nlln" p inion u". ".1",,1. 1f. I" 10 I • ., . 9

Paragraphs 16-17 (A-Fig . 11). The third number In perin· Itt .. ,. I, 1M "'In,tlon number (el 01 the nomln.1 pinion tooth length (e - F~. 11). The NOMI NAL tooth length (C) of the pinion gear is 33 mm. Any variation from the nominal is the third number in parenthesis stamped on the pinion face. The number represents hundredths of a millimeter. For example: (- 1) represents -0.01 mm. This figure must be added or subtracted from the nominal tooth length to determine the ACTUAL pinion tooth length. To cal culate mounting distance (X - Fig. 13), taken from the centerline of differential bearing bore to the pinion cage mounting face. add pinion mounting dista~ (A - Fig. 11) and pinion cage height (B - Fig. 12): Then, subtract the ACTUAL pinion tooth length (C+c-Fig. 11 ). To ca1culate distance (Y - Fig. 1 3), install Pinion Setting Depth Tool PS 79-101 (1 - Fig. 14) or an equivalent tube that fits the differential bearing bores. Using a depth micrometer and surface plate (if needed), measure the distance (Y -Fig. 13) from the pinion mounting surface to the ou tside diameter of the pinion setting gage. NOTE: If • luri.ce pl.le II needed, be cert.ln to lublr.ct Ihe width of the pl.le from the m ... ur.ment. Measure the diameter of the pinion mounting tool using a micrometer and add half the diameter of the tool to the depth measurement. To determine shim pack thickness needed (Z- Fig. 13). subtract distance (Y) from distance 00. Use the following example probl em as a guide. Fit . U -Cro .. ueUon.' NW 01 pI"lon CI.,. .1Id dltt .... nll.,.howfn ll f:./f:ul.," dl m.". lo". nHCWd to lind . hlm pglr 'T' 101 f:QnWCf pinion mov"I1,,'1 dl.f.nf: •. It.,., 10 I.,d. 10 INTERNATIONAl. HARVESTER NOMI NAL distance (A) .. 103.00 mm 1 st Figure on pinion face (a) ......... +0.10 mm ACTUAL pinion mounting distance ..... 103.10 mm Pinion cage height(B) . . . . 42.11 mm NOMINAL pinion tooth length (C) ....... 33.00 mm 2nd figure on pinion r ... (,),(-I) represen ts( - O.OI mm) . -0.01 mm ACTUAL tooth length. . . 32.99 mm ACTUAL pinion mounting distance (A + a) . . . . . . . 103.10 mm Pinion cage height (B) .... +42. 11 mm 145.21 mm ACTUAL pinion tooth length(C + c) ......... - 32.99 mm Mounting distance (X) . . .. 112.22 mm Housing face to setting tool . . . . . . . . . . . 65.02 mm Half tool diameter ....... +45.13 mm Distance(¥) ............ 110.15 mm Distance (X) .... • ....... 112.22 mm Distance(¥) .. . ......... -1l0.15mm Shim pack required (Z) ... 2.07 mm Shims (27-Fig. 6) are available in 1.0 mm thicknesses. Install pinion assembly with required shim pack and new "O~ ring (28). Tighten pinion cage mounting bolts to 58-72 N · m. "II . '4- VI.w .lIow''''1 d.plll mlclQIII.III .1t lip to. m ... u... dl.I .nf:. f rom pinion mou"tl"'1'U,, I.c. /0 OIll,Id. dl.mI'" 01 p1" Io" .. lIlnllll"''' It.I., 10 I .... . I. Pinion Settillj( Tool PS 2. SurlJo::e plaw 79-10 1 3. ~ mim>Inet« 16. Reassemble differential camer by reversing disassembly procedure. Apply IH Thread Lod : 684 017C I or equivalent to carriel' mounting bolts and • tighten to 5&-73 N· n torque. Place car · rier assembly in camer housing with ring gear teeth facing dowel hole in ear- rier !lange. Install differential bearing adjusting rings and tighten hand tight against bearings. Jnstall bearing caps and tap into place. NOTE: Mlk. lure not to CIO .. th,e. d .djuiling Ilngl whim Inlt.lllng beerlng C.pl. Install bearing cap bolts and washers and hand tighten. J..IlstaU a dial indicator as shown in Fig. JE. NOTE: M.ke .Utl I ndk.tor Ih.ft II mounltd on the veJ OY .nd 01 g'.' tooth f.c •. Tum both adjustng rings equally the same direction until backlash is 0.15 to 0.20 mm. When correct backlash setting is obtained. install adjusting ring lock plates, apply lH 1'hread Lock 241 or equivalent and tigllten lock plate bolts securely. NOTE: Tlght.n edlultlng rlngl to . lIow lock pl.te Inlt.llltkin II nee .... ". Bend tabs on loc .( plates over mount.- ing bolts. Torque beating cap bolts to 97-127 N · m. Position differential assembly into axle housing using dowel as a guide to line up assembly. Appl)' IH Thread Lock 6S4 0 17 CI or equivale1t. to mounting bolts. Install bolts and tighten to 53-73 N·m torque. Balance of assembly is reversal of disassembly. Install axle assembly onto tractor as out lined in paragraph 10. 1 7. TOE-IN ADJUSTMENT. Toe-in setting is &-10 mm Adjustment is made by loosening jam nuUl on tie rod and turning t ie rod as required to achieve correct setting. After toe-in is correct Fit. TS - Vllw .lIow",'1 In,t.lI.tloft 01 d l./ lit- dlf:llot'O mll , ur. rill , tN' 10 pI"lon o.ct/ .. II.

Case IH 284 Tractor Complete Workshop Service Repair Manual

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