Ler eye | AAW MENU DIESEL TRACTOR MODEL YMIGSDCONTENTS CHAPTER 1 GENERAL 1, SPECIFICATIONS W 2. COMPONENTS 16 3, TIGHTENING TORQUE RATINGS. mary 4. DIAGRAM . 4.10 41 Power Train +10 42° Fron Axe Si vi 4.3 Transmission Sectional View 112 4.4 Electric Wiring 113, 45 Fuel System 114 4.6 Engine Lubricating Systern 14 47 Cooling System 415 48 Hydraulic Systom 418 5. MAINTENANCE EQUIPMENT AND TOOL. 1-16 CHAPTER 2 TRACTOR DISASSEMBLY 1. DISASSEMBLY SEQUENCE . 24 CHAPTER 3 TRACTOR CONSTRUCTION AND MAINTENANCE 1. CLUTCH AND RELEVANT ITEMS 34 1.1 Specifications 31 1-2 Operating Principle 31 1-3. Visval Inspection 32 1-4 Inspection by Testing Equipment 33 2. TRANSMISSION AND RELATED ITEMS |... 35 2.1 Specifications 37 22 Visual Inspection 38 2.3 _ inspection by Testing Equipment 38 3. BRAKE ‘i gat 341 Specifications 342 3-2. Inspection and Maintenance B12 4, HYDRAULIC LIFT DEVICE 343 41° Specifications ana 4.2 _ Inspection and Maintenance 344 5, STEERING 316 BA Specifications 346 5-2__ Inspection and Maintenance B16 6. FRONT AXLE 347 G1 Specifications 317 62 _ Inspection and Maintenance (YIA169), 319 85. Inspection and Ma ntnance [YM690) 3:20 7. REAR AXLE 3.23 TA. Specifications 323 7-2. Inspection and Maintenance 323 CHAPTER 4 TRACTOR ASSEMBLY 1, GENERAL ASSEMBLY 44 2, TRANSMISSION ASSEMBLY 43 2.1 PTO Driving Shaft Assembly 43 2:2 PTO Fork Shaft Assembly 4a 2.3 Front Drive Shaft Assembly (¥M1690) 45 24 Front Drive Shift Shaft Assembly (YMIE9D).. 45 2.5 Driven Shaft Assembly 46 2.6 Counter Shaft Assembly 47 27 Low:high Shift Shaft Assembly 4g 2.8 Main Change Snaft Assombly 48 2.9 The Fork of the 2nd/3rd Speed Shift Shaft Assembly 49 10. Reverse/tst Speed Shift Shaft Assembly 2.11 Main Shaft and Transmission Front Cover Assembly 2:12 Gear Shift Lever Assembiy 2.13 PTO Reduction Shaft Assembly 2.14 Connecting Shaft Assembly 2.18 PTO Shaf: Assembly 2-16 Differential Lack Shaft Assembly 2.17 Final Reduction Pinian and Rear ‘Axle Shaft Assembly 18 Differential Device 19. Cam, Differential Lock Assembly FRONT AXLE ASSEMBLY .. 1 For 4.Whee! Drive (YMT69D) 2 For 2Wheel Drive (¥M169) 3.3 _Differential Device Assembly (VM1690) 4. CENTER PIN ASSEMBLY 4.1 For 4Whee! Drive (YM1690) 4.2 _ For 2:Whee! Drive (YMI69) 5, BRAKE DRUM ASSEMBLY 6. HYDRAULIC SYSTEM ASSEMBLY 6-1 Cylinder Head Assembly 62 Lifting Shaft, Lift Arms, Lift Crank. Hydraulic Piston Rod Assembly 63 Control Vaive Assembly 64 Hydraulic Control Fork, Hydraulic Control Lover Assembly 65 Auto+eturn Rod, Operators Seat Bracket Assembly 646 Slow Fleturn Valve Assembly 67 Lift Arm Assembly. 88 Operational Precaution Points CHAPTER 5 TRACTOR ADJUSTMENT CLUTCH AND RELATED ITEMS PTO AND RELATED ITEMS BRAKE AND RELATED ITEMS HYORAULIC EQUIPMENT STEERING SYSTEM CHAPTER 6 ENGINE 1, DISASSEMBLY SEQUENCE Radiator and Air Cleaner Racker Arm Assembly Cylinder Head Timing Gear Cover Camshaft Pistons Liners Flywheel Rear Oil Seal and Rear Main Bearing Crankshaft and Main Bearings Front Oil Seal 11 Pump, Lube Oil Suction Tube and Screen i Pressure Regulating Valve Water Pume Thermostat Fuel Injection Pump Fuel Injection Nozzies BSLSSEGSE 4.10 4 412 413 413 aia 418 416 418 420 421 421 422 423 424 424 425 426 427 a8 429 431 431 433 434 435 436 54 51 BI 54 BIFOREWORD = MAKING EFFECTIVE USE OF THIS SERVICE MANUAL This manual discusses the maintenance standards and trouble-shooting procedures to be employ- ed from the standpoint of the repairman, in order that the tractor can perform in top condition through correct servicing procedures. Repairs conducted by estimations or force of habit could lead to unexpected accidents and seri ous trouble. Always carry out repairs in a scientific and accurate manner. = SERIAL NUMBERS Do not limit your work merely to the actual repair work alone but always strive to carry out dependable servicing, including such efforts as noting down the servicing history of your tractor and keeping maintenance records. In order to easily process any claims it is imperative that the full details and serial numbers of parts be clearly written on the prescribed form, and then sent to the dealer for forwarding to the manufacturer.CONSTRUCTION AND MAINTENANCE 1 Cylinder Liner 2 Pistons 3 Piston Rings 4 Piston Pin 5 Connecting Flods 6 Crankshaft 7 Camshaft 8 Tapper & Push Rod 9 Cylindor Head 10 Combustion Chambers 11. Rlocker arm Assembly 12 Injection Pump and Nozzles 13 Governor 2-14 Lubricating Gil Pump 15 Cooling System 46 Gears 17 _Oil Seals, O-rings and Ball Bearings ASSEMBLY SEQUENCE ..... 1 Crankshaft, Rear Oil Seal and Flywheel 2 Cylinder Liners 3 Pistons 4 Camshaft 5 Oil Pump 8 7 8 9 Lube Oi Suction Tube and Screen il Pressure Fogulating Valve Front Oil Seal Cylinder Head 10. Timing Gear Cover 1 Fuel Injection Pump 2. Fuel Injection Nozzle 3. Water Pump 14. Rocker Arm Assembly |. ADJUSTMENT 1 Fuel Injection Limiter 42 Valve Clearance 4.3 Ful Injection Timing 44 Bleading Fusl System 45 Fan Belt Tension 4.6 Other Measuremanis and inspections CHAPTER 7 ELECTRICAL EQUIPMENT 1, BATTERY . 11 Specifications 1-2 Description 1-3 Inspection 2. GENERATOR AND CURRENT LIMITER Specifications Structure Connecting Diagram Inspection and Characteristics Cautions during Handling and Assembiy Inszructians for Disassembly and Assernbly Maintenance and Inspection STARTER MOTOR 1” Specifications 2 Description 33 Before Disassembiy 34 Disassembly and Assembiy Sequence 35 Inspection and Maintenance - 612 612 613 614 615 B16 B18. 620 622 623 625 6.26 6.26 633 634 835 635 635 6368 636 638 639 641 641 642 642 642 643 644 6a 6.45 645, 6.45 647 647 648, 649, 650 650 650 poppeesy 4, THERMOSTART 4-1. Specifications 42 Description 4.3. Using the Thermostart 5. TURN SIGNAL LIGHTS 5A Specifications 52. Description 6. WATER TEMPERATURE INDICATOR LIGHT 6-1 Specifications 6:2. Description 7. ENGINE LUBE OIL. PRESSURE INDICATOR LIGHT... . 7-1 Specifications 72. Description 8 HORN 1 Specifications 82 Description 8. LIGHTS 91 Headlights 92 Work Light 10, SAFETY START SWITCH 722 722 722 7.22 723 723 723 723 723 723 7.23 723 723 7.28 724 7.28 728 724 72a 724 CHAPTER 8 TRACTOR TROUBLESHOOTING ENGINE AND RELATED ITEMS ELECTRICAL SYSTEM BRAKE SYSTEM. CLUTCH AND RELATED ITEMS TRANSMISSION AND RELATED ITEMS | PTO AND RELATED ITEMS. me HYDRAULIC SYSTEM | STEERING AND SUSPENSION SYSTEMS | CHAPTER 9 REGULAR INSPECTIONS 1. CHECK LIST . 82 Ba 84 85 a6 86 a7 88 o21 2 3 4 CHAPTER 1 GENERAL SPECIFICATIONS COMPONENTS - TIGHTENING TORQUE RATINGS DIAGRAM ceceeeees Power Train Front Axle Sectional View (vNi690) ‘Transmission Sectional View lectrie Wiring System gine Lubricating System Cooling System Hydraulic System MAINTENANCE EQUIPMENT AND TOOLChapter 1 GENERAL 1. SPECIFICATIONS item Unit | Yeveo yr690 EN. Engine Engine model - 3T72HA-A GINE | block | Type of engine Diesel engine [ Number of cylinders 3 Cvlinder tayout I Vertical in tine Borex stroke - in. | 2.83 x 2.83 (72mm x 72mm) Cylinderlinertype | Wet type Cycle - - : 4-stroke cycle [Combustion chamber type Precombustion chamber [Valve system Overhead valves | Dipacement 656 (679 cc) | ‘Compression ratio 7 a Bt Maximum output hpirpm: 16/2600 | Maximum torque fe tos? 36,877800~2200 | rom | (6.1 kg-m/1800~2200) } Engine weight “ibs 253.3175 ko) | Pistion [Compression rings | - 2 | rings __[Serapervins | 1 Valve Intake Open degree 21° + 2° before T.D.C. | timing | valves [Closed | degree 50° after 8.0.C. Exhaust Open degree | 50° before B.D.C. t valves | Closed degree 20° after T.0.C, Valve Intake valves in 0.0078 (02mm) clearances | Exhaust valves ‘n 0.0078 (0.2mm! Fuel | Engine starting 7 Bleetnesarting system ignition I Compression ignition ' Injection timing ~Peoree 24° before TDG. [Injection pump type 7 ‘Yanmar Bosch YPER-0707 {[itction ump plunger damewr] in 0.2362 (6mm) | Injection plunger svoke | in (0.3756 (7mm) i | Injection valve diameter “in -_ 0.1958 (5mm) i Injection pressure ms 2276 (160 kalem*) | Injection order 1-3-2 | Diesel oit ce Se ES Speed control method | Al speed mechanical wpe wt YM169-169DChapter 1 General ¥M169-169D em Unit vYMT68 yi690 EN. | Lubri | Lubricating pump type Trochoid GINE | eating [Lubricating system Force feed lubrication stem |” Lubricating ol capacity USsa 0843.20) ‘Cooling | Cooling system Water cooled system | Heat exchange method Radiator | Electrical] Starter motor type 8114-230 (Hitachi), 0.C. motor system | Starter motor capacity | V-KW ~ 12 type Generator capacity vA RS5114 (KOKUSAN) (Current limiter Battery voltage, capacity val 125 Thermostat plug type A700 02 (HITACHT Thermostar capacity [va - 125135 CHAS.| Power | Clutch [Clutch type Mechanical dry single plate sis | train Facing (outside diam 7.09 x 4.92 x 0.33 breaeit ‘(180mm x 125mm x 8.4mm) Facing area Taare 264 (132m) [Static torque capacity | ft lbs 97.7 (13.5 kam) Trans. | Transmission type Mechanical, constant selective mesh gears Hee ombination Transmsion speeds 6 speed for forward, 2 speed for reverse Travel | [Fooward) MH (kein) speed" | Ist _ 0.73(1.17) | 0.74 (1.19)" [anat 1.23-(1.98)_| 1.26 1201)" and 179 (288) | 1.821292)" ae 3671681) | 372/699" sm 7 6.23 (10.03) | 6.32 (10.17 Ten 9.08 (14.61) | 9.21 (14.81)° | Teverse 1s 1.07.62) _[ 1.02 (164) One 5.08 (8.18) | 6.15 (6.29) P.0. [Speed | ist 540 at 2255 [ana | [ 770 at 2255 Shaft rotation Crockwrse viewed from reat Bhatt position Rear end Running | Different Differential gear gear | Oneway clutch Claw cluteh | Front axle type with 8 ~16 (Goodyear Tire) Lemoine-1ype supported by center pinChapter 1 Generat YM169-169D ter Unit ye169 ym1690 [cHas- [Running [ Rear axle type ‘Semi-floating Isis | gear From [Torin in 0.16-0.32 (48mm) wheel | Camber degree _ Caster degree sy oF fel {amy | 0:53 (13.5) 010mm) King-pin inet degree ita as ‘Steer. | Steering system [ Ball — serew ing [Gear ratio ale eet system [Steering wheel diam. | in. | ‘15.8 (400mm) Gear box oil capacity | USaal Grease Tires [From Tire size 4.50-10- B12 eee a : | zerrse | 2PR-FSL Tire pressure | pst 17.8 (1.25 kale?) i Rims 350 4IA12 196 Option, Front | Tire size 6-12-2PR-FD | al tres | wheels (TURF), Tire pressure | tbyin? 17.11.20 kaiem*| j Rims SIA12 [Pear [trese [| 8-16-4PR wheels |Tire pressure | psi 22.8 (1.6 kale’) Rims wae | Option| Rear |Tiesize TT "8-16-4PR al tres [wheels oy (TURF) Tire pressure | psi 22.8 (1.6 ka/em*) Rims SK 16 | Brakes | Type af main brakes Internal expansion mechanical brakes Parking brake type | “Locking foot brake | [Lining surface area 16.1 (104 em?) foe aee ee in, | 0.98 x 0.16 x 4.09 (25 x 4 x 104mm) ness x length | [e meter |. 4.3.(110mm) | Tai ater == By oak Parking brake om» by hand | titting | Type Hydraulic system | Type of hydraulic pump Gear pump Position of pump In front of engine governor chamber | Pump drive Claw coupling \ Pump discharge capacity [vse 3.43 (130) at 2600 rpm |Chapter 1 General YM169-169D eer [ unit yet63 YM1690 (CHAS. | Lifting | Control] Supplementary usoa| 250050) Price isis | system | system [ollcapacity | Control system Hydraulic select control ylinder | Safety valve : | cracking pressure | ential Type Single acting Bore x stroke in 2.36 x 3.54 (60mm x 50mm) Total stroke volume | ev. in 15.50 (254 ce) Lower link hitch point (Max) 7246" (624mm) Lifting power (Lower link) 11102 (600ka) implement fiting method Bepoint hitch, cat: JIS—O wieat: 1. pin Lito | Water temperate tor | Vy 7 ate, ight — | Engine oil pressure indicator iia vw 1234 Head light - vw 12-25/25 Turn signal tights vw 12-23 Work light vw | 12-20 Horn vA 12-42 Fear retectors Red reflectors TDimew [Overall tength sions With 3-p0ine hiteh in | 98.0" (2490mm} | ob | Without 3 point hitch in etc | ee | Overall width in 38.4" (975mm) ‘Overall height 510" (1295mm) To operator's seat in, Toni in. oa 41.7" (1060mm) Wheel base in, 49.4" (1255mm) Tread | Front in, ae eae (770mm) (745mm) Rear in, 27.6"-33.5 (700mm —B50me} Minimum ground clearance in 10.4" (265mm) 9.3" (235mm)Chapter 1 General YM169-169D them [unit yee M1690 CHAS. | Weights | Gross weight tbs 1190 1279 sts een | (540 ko) Fron whee! load tbs 569 i (258 ks) [Rear whee! load [oe 621 (282 ks) | (285ko) [Front weights (optiona toe 44.413 pos 1323 | (20 x3= 60 ks) Fear wheel weights (optional) | Ibs {each wheel) | 441+ 55.1 | | (20 + 25 = 50 ko) Perform:| Minimum turning radius fte Under unlocking brakes | ance 76 82 _ (2.3m) (2.5m) Maximum grade degree 30° Braking distance ft 13.1 4m)Chapter 1 Generat = = YM169-169D 2. COMPONENTS (1) Maftier (2), Brake pedat (3) Step (2) Differential lock pedal (9). Instrument pane! (6) Fuel tank cap (7) Bumper (8) Radiator (9) Hood (10). Engine (11) Ai cleaner (12). Fuel tank (13). Throttle lever [14 Steering whee! (151 Gear shift tever (16) PTO shift lever (17), Hydraulic control lever (Bi Hyaraulic cylinder case (19) Assist bar (20) Operator's seat (21) Fender (22) Lift link (23). Upper tink Model (24) Upper link hinge YM169D ncaa! 66Chapter 1 General YM169-169D LH AH esChapter 1 Genera 3. TIGHTENING TORQUE RATINGS Unit: f.lbe (kgm) tem [ENGINE] Cylinder botts head nuts Rocker arm support Rod bolts ‘Main bearing housing Crankshaft pulley Flywheel Timing gear case Hydraulie pump Fuel injection valve holder Fuel injection valve cap nut Fuel injection valve nozzle holder body [TRACTOR] Differential housing bolts Differential bearing case bolts Front axle bracket bolts Brake drum bolts Brake cover nuts Clutch housing (M12 nuts) (610 nuts) (M8 bolts) Rear axle housing (M10 bolts) (M12 bolts) (m12 nuts) Drawbar bracket nuts Fender bolts Seat bracket {M10 bolts} (m2 bolts) Transmission case nuts Hydraulic cylinder case bolts ‘Steering gear box bolts Steering nut Clutch presture plate bolts Transmission front cover bolts Transmission rear cover bolts Top link hinge bolts King pin bolts, Front axle (YM1690 only) (M10 Bolts) (M12 Bolts) Flange bolts (rear wheel) Front wheel bolts Fear wheel bolts Tighteni 80111) | 45-52(6.2-7.2) | 16.6 -20.2 (23-28) | 18-18(20-25) | 76.1 = 86.4 (10.5 — 12) 47 ~ 50 (6.5 - 7.0) 17-22 (2.3 -3.0) 17-22 (2.3 -3.0) 29-33 (4.0 - 4.5) 29-33 (4.0 4.5) 65 — 80 (9.0 - 11.0) | 17-22123-3.0) | ts-22120-30) | 5072180 100) | ty 22@3-30) | 17~22(23-3.0) 43~88(60~ 80) 3343465 ~60) 25-3638 60) 4536 6080) 45~58,60 80) 5887 (80 ~ 120) | 25-3613.5- 5.0) eee | 204314060 25-3635 ~50) 25-3648 50) 33-43 148 60) 5887 (80-120) | 17-22123-30) 9-12113-17) 9-213 -17) 43586080) 76 €6 105 - 12) 458216272) 7686 (105 ~ 12) 7100 120-180) lfesteo=al 58 — 72 (8.0 — 10) YM169-169DQhapter 1 General [STANDARD OF BOLT TIGHTENING TORQUE] Bok size [Cast ion (steel Lishtalloy 7 7 fee [kom [feos [tom me [6-8 [os-12|6-9 |os-12 ms |17~22 | 23-30 | 18-22 | 20-30 mio [33-43 | 45-60 |25~36 | 35-50 mi2_|58-72 | 80-100] 43-58 mia |a7—108/ 120-150|58~8.7 | 80-120 mie | 123-152| 17.0-21.0) 87 - 123 | 12.0-17.0 mia |174~210| 24.0-29.0| 145-195 | 20.0-27.0 m20__ |239-297 33.0-41.0| 217-253 | 30.0-36.0 BOLT CODE 1°7" appears on the head of the 77 bolts 100000 — 000000 t (2) 7T (No electro-deposited coating) (6) 7T (With electrodeposited costing) YM169-169DChapter 1 General 4. DIAGRAM 4.1 Power Train FRONT TIRE! FRONT TIRE (25) Note (1) 1 hold omty to Yar1690 12), “Shaft, and gear are combined (13) 6) (19) One-way Clutch (13) @ (sh (24) REAR TIRE ¥M169-169D Only YM169D ih . J (38) (62) fe (14) ue REAR TIRE DIFFERENTIAL LOCK cLuTcHGhapter 1 General YM169-169D 4-2 Sectional View (YM169D) KNUCKLE ARM (L) FRONT AXLE CASE (R} GEAR CASE COVER ‘SPIRAL RING GEAR T38 BEVEL GEAR T18 O veer FRowT = GEAR CASE ee 4 i FRONT DRIVING SHAFT FRONT AXLE CASE (L) DIFFERENTIAL SIDE GEARY BEVEL GEAR TIS DIFFERENTIAL KING PIN PINION SHAFT BEVEL GEAR T13, DIFFERENTIAL PINION FRONT FINAL GEAR T36 FRONT GEAR CASE FRONT SPINDLEChapter 1 General ¥M169-169D 4.3 Transmission Sectional View DIFFERENTIAL LOCK CLUTCH GEAR \ DIFFERENTIAL LOCK CAM TIRE ASSY % DIFFERENTIAL HOUSING FINAL REOUCTION GEAR HOUSING ASS'Y | SPIRAL RING FINAL REDUCTION GEAR Pinion itt a DIFFERENTIAL SRAKE COVER (U) BRAKE DRUM -———— sraxe cover in) ——__FiNat. Reouction PINION A) —— BRAKE DRUM REAR AXLE SHAFT FINAL REDUCTION GEAR REAR WHEEL HUB 2 ~~ Fina ReouCTi Rn REAR AXLE HOUSING (L) REDUCTION Gear / DIFFERENTIAL / PINION GEAR “REAR AXLE HOUSING IRD DIFFERENTIAL SIDE GEAR FRONT P.7.0. SLIDING GEAR Lowa REDUCTION Gean comics NTION SEAR no. sary ean connec mont oniving sean \ [Eee / reverse ean y) / Taansuission HousiNG ~ ce EAR COVER FRONT P.T.0, sHarT PTO. SHAFT COUNTER sHaeT —~ = ISTIREVERSE SLIDING GEAR MAIN SHAFT 2NDISRO SLIDING MAIN CHANGE SHAFT” DnIVEN Gan FINAL REDUCTION ‘GEAR NOUSING onven cean & Man cean one may cturen (2) ey, \ \ ONE.WAY CLUTCH (al PTO. ORIVING SHAFT / \\ Driven cear TRANSMISSION HOUSING, \ 7.0, REDUCTION GEAR \p7.0. supine Gear DRIVEN GEARYM169-169D Qhapter 1 General 4-4 Electric Wiring 113fer 1 General Chapter 1 Ge ¥M169-169D 4.5 Fuel System Clinger hea — No.2 cylinder fue ~ No. evlinder fuel [No.1 eylindar fae ue! filter Fuel injevion pume 4-6 Engine Lubricating System No.3 __No.2__No.t_ Cylinder (and Exhaust Rocker tem oA Kon Ke “To-cylinder head and camshaft Oi pressure senaiog unit 7 eae: tite oo 1 bearing Gylinder main beeing Out panGomer) Genet a 69.1690 [LIST OF SPECIAL TOOLS FOR DISASSEMBLING/ASSEMBLING ] Tool Purpose of usage ‘Type name (reference) (1) Compression gauge ‘To check engine compression pressure | (0-70 ka/em*) (2) _ Cylinder liner polisher | To polish eylinder iner (3) Pump tester for To test fuel injection pump Type fue injection (4) Hydraulic oi tester To measure hydraulic ol pressure 0-250, 0-36, 0-5 kglem? (8) Spring pin removing tool | To remove spring pin © | (86, 66, 86, 1067 | knock pin punch) [61 “Garage Jack Lifting Bron) (7) Grease gun Greasing - - (G)__ Solder Electrical parts modification I ~ (@) Shap ring pier ‘To remove snap ring (10) Relief valve removing tool | To remove relief valve (11) Steering whee! puller To remove steering wheel | (12) _Paman arm puller ‘To remove pitman arm (13) Differential tock ‘To install differential lock spring compressorChapter 1 Generat YM169-169Dcr! Gener = YM169-169D 4-7 Cooling System Radiator cap =f Trina ead 1 te es +—+ : Hl. ai] em qo-L--4 Noe i, Cylinder book ia Radiator 4-8 Hydraulic System Hydraulic eylinder Hydraulic stop valve (PL Hydraulic pressure outlet ah ‘Slow return valve | Hydraulic contrat lever Hydraulic pressure a oo oome Ct capt F _ Olt strainer ‘Transmission caseChapter 1 General 5. MAINTENANCE EQUIPMENT AND TOOLS [LIST OF MEASURING TOOLS] ¥M169-169D Toot Usage Type name (reference) (1) Hydrometer Specific gravity check (2) Battery charger To charge the battery a (3) Hydrometer for ‘To measure the specific gravity of - water and anti-freeze (8) Calibrator Parts measurement 200 mm (5)__ Dial gauge Pinion gear and backlath measurement 0-10 mm (6) Universal dial Parts measurement 7) Circuit tester | Electrical system inspection 20A tester (8) Micrometer Accurate parts measurement (combination of 0-160 mm) (9) Cylinder gauge Inside diameter measurement (measuring range: 10-180 mm) [ (10) VA meter “Voltage and amperage measurement (11) Thermometer Coolant temp. measurement, and ay various parts meas (12) Tachometer To check the engine and P.T.0, (0-1000 rpm) shaft revolutions (0~10000 rpm) (13) Tire gauge ‘To measure the air pressure of one _ the tires — (14) Toesin gauge Tomes he wan of rot Cae (15) Torque wrench To measure the bolt and nut torque 920 kgem 1300 kg-cm 2800 kgcm (16) Thickness Gauge To measure parts clearance 65mm (17) Nozzle tester To check nozzle opening pressure (18) Radiator tester "To check radiator cap and system leakageJAPTER 2 TRACTOR DISASSEMBLY 1. DISASSEMBLY SEQUENCE 24Chapter 2 TRACTOR DISASSEMBLY 1. DISASSEMBLY SEQUENCE ¥M169-169D Divison | Part Name lustration Coution/Remarks 1.| Instat. | Installation ion | stand stand 2. Tires | Flange bolts and remove the snap pin {10 % 78), The rear tie can then be removed. Pin 10x78 i | — 1) Utilize the top tink hinge assembly bolt (12 x 45) to at tach the installation stand (8). 2) Utilize the front axle bracket assembly bolt (12 x 20] to attach the disassembly stand (A), 3) Raise the rear tres by tun ing the adjusting bar of both stands (A) and (8). Prior to this adjustment loosen the flange bolts of the rear tire rim. 4) Be sure to adjust both stands (A) and (B) uniformly to ensure that the tractor remains level CAUTION: When attaching the front stand (A) be sure the front tires remain in ‘contact with the ground, Loosen the two flange bolts 24Chapter 2. Tractor Disassembly YM169-169D Diviion | Part Name IMustation Caution/Remarks a}teane | oi plug 20 Loosen the oi lug (20) to mission drain the ol. Gow sy | nat reduction 4 Pull ut the cotter pin (2.0 x 18) and remove the pin (@ x 28) tock rod) | | L — — - | - 5 Pin 8x 175 J put out tne cotter pin (2.0x 15) {Brake roa) | and remove the pin (8 x 17.5) | |Chapter 2 Tractor Disassembly YM169-169D Mustration Bol (10 x 65) — Z Division | Part Name 6 |Fender | Fender (L) (RD | | Bolt (10 x 60] 7|seat_ | Operatior’s | seat bracket | 8 [Trans | High-pressure mission | pipe \Gear | assy final reduction) | Caution/Remarks Remove the four bolts (10 x 60), the two bolts (Bx 16), and remove the fender, (Lside) Remove the two batts (10 x 65), two bolss (8 x 16), ‘and remove the fender (Reside) ‘The operator's seat can be removed by removing the two bolts (12 x 25) and the ‘wo bolts (10 x 20), Hydraulic evlinder care > Loosen the adapter, and re move the high pressure pipe from the hydraulic cylinder 23Chapter 2 Tractor Disassembly YM169-169D Division | Part Name lustration Caution/Remarks 9 |Trant |Low-pressu Remove the three bolts (6 x |mission |pipe 18) and dismantle low pres |case sure pine. Be sure not to damage the [sew ol filter when dismanti ay na finat reduction] 10] Filter Place a container for ol ‘and remove the oil filter | Ont I u | Electric wire Pull out the wire behind | hamess: the clutch housing,Chapter 2 Tractor Disaser eee — $$ riss1690 if Division | Part Name Mlustration Caution/Remarks 12] Trane | Daantiog Remove th seven ne (2) Imson | tanamon fe” | cx rom shuteh oar | housing eo | Iroc 1 sy ine be 13 | Dismantling the case from the eluteh housing [Procedure 2] Separation of transmis: from final reduction gear case x Separate the transmission cate from the clutch housing CAUTION: Adjust the ad juster in Step 1 so the | transmission case and ‘lurch housing are level. 1 J fest qtection arco Remove the ten nuts (10) and separate the transmission case from the final reduction gear CAUTION. 1) When preforming this procedure, f the murs fon the left ‘and right side) at the arrow mark are hard to remove due to the extruded portion, gradually remove the transmission case and remove the nuts. 2) Attach these nuts first during assemblyQhapter 2 Tractor Disassembly YM169-169D Division | Part Name Caution/ Remarks 15| Housing | Lift arm Inydrau- |(L)(R) lic ey! inder Littarm ‘Auto-retnr rod tearm sat bolt 1) Lift arm (L} Remove the lift arm set bolt, and force off the lift arm (Li 2) Lift arm (RD a) Remove lift arm set bolt b) Remove the two bolts (8 x 20), and dismantle the auto return rod support ©) Lift off the lift arm (Ri 16 Hydraulic cylinder | housing Hydraulic evinder case Bolt [10 « 35) Pemove the ten bolts (10 x 35} and separate the hydraulic, {ylinder housing from the |final reduction gear case 17|Brake [Brake (L)(R) pat TB x16) Leck plate Brake | Remove the nuts (8) fon the left & right side), and remove the brake (L) (Ri. 26Chapter 2 Tractor Disassembly ¥M169-169D ol Caution/Remarks 18] Brake |Brake ‘drum i | | 19\Gear_ | Rear axle case [housing as’y, (LN (R) final reduc 1), Remove the bolt( 10x 16) lock plate, washer, and lock plate 12) Drive the bolt into the lorake drum to remove it NOTE: For Step 2) use an MB holt with a thread length aver Pin (25 mm) For example, hydraulic adaptor cover fixing bolt [MB x 45) |. 1) Loosen oil plug 110) and 4TH SPEED SHIFT iW o-+> 2ND SPEED SHIFT —> 5TH SPEED SHIFT 35Capter 3 Tractor Consractionand Maintenance yi 169-1690 L <=> BRD SPEED SHIFT )| Sor seeeo sie S oy L +7 IST REVERSE SPEED SHIFT ie —> IND REVERSE SPEED SHIFT af ans Saal ye —Genter 3 Tractor Consrationand Maintenance 769-1690 2:1 Specifications ‘Control levers Gear shift lever — 1 P.T.O. shift lever — 1 gear reduction Reduction 6.33 reduction Reduction 5.2 [YM169, YM169D} ‘Over-running clutch Built-in claw clutch a Gear] Rano] Toil eduo | Tanamiion | Travel pod the | ate | tonrado.” | geerato | {Unt ph kp vane [Fowoad [we | 1 | | sao | ee” | oraaan_] vue“ [20a | 2 | L | 16765 5.70 1.79 (1.98) _| =z 3rd 3 : 128.91 3.91 1.79 (2.88) a [e285 | 181 37 61) i 5th 2 H 37.12 113 0.23 (10.03) | a 2.08 14.6) weno [an [a |u| 20008 [69 | 101082 | [ana al 4 45.31 1.38 | 5.08 (6.18)Chapter 3 Tractor Construction and Maintenance 2.2 Visual Inspection 1) Check to see that there are no traces of oil leakage or cracks in the transmission hous- ing. 2) Check to see that there are no traces of oil leakage or cracks in the rear axle housing [Servicing Standard for Transmission Section] YM169-169D and the final reduction gear housing. 3) Check the gears for uneven wear, chipped teeth or cracks, 2:3 Inspection by Testing Equipment Refer to the instructions and detailed drawings in Section 2, Chapter 4 for details on assembling the transmission. (Unit: inch (mm)) No. 1, [Needle bearing in main shaft] [Outer diameter of main change Shaft tem Standard specification 015902-0.5006 (15.9933) Replacement limit Testing equipment Microm: Inner diameter of reverse gear (Clearance Outer diameter of countershaft Inner diameter of metal [Clearance 3. |[Low-hi reduction gear 34) | Inner diameter of main shot Cylinder gauge | 08270-08276 (21/882) | = | - 0.006 (0.151 — _ ee 2 [Reverse oer] i Cuter diameter of meta 019826-0.9635 (25:2029) - | icrometer ; ace ee To.ge4s-0.9861 (25°22) = * 100080 0028 0.020-0.062) 2 * | 07869-07874120.9 913) | — 0.08) 7 0.76820 7600 (2019 94) {0.0008-0.0021(0.020-0.088) 0.020, Cylinder gauge 0.0118 (0.3) Micrometer Cylinder gauge 0.0118 (0.3) lOutersiameter of countershaft | 0:9835-0,9840 (25-.099) | Micrometer Inner diameter flow T a o1s843-0.9851 (25°91) | cylinder gauge | [Gtearance ” 0.0003-0.0016 (0,007-0.081) | 0.008 (0.2) 4. Tone way ete | [outer diaméte of eonnectn | ee % | es920-0:3024 (10/9932) - | Micrometer er camer ofaunig | 09999-03045 (079020) | F cytncer gouge (Gree = oGG1-20010 9602-0028) “0.0118 (0.3) 38Chapter 3 Tractor Construction and Maintenance ¥M169-169D Unit: ine rem No. item Standard specification Replacement limit | Testing equipment 3 [Backlash forall spur gears ——~| 0.006-0.072 (0.15-0.3) 002 105) Diatgause + 6. [Detection forall shafts except | — (differential lock shaft oe ee 7. wit of groove for sliding gears | 0:2362-0.2441 (6°22) - Calipers Hrickres of shift fork ip | 0.2205-07203 (6-87) ia Caines (iearance [0008-0 337° —} orc 7 @ fourier ot orkiats —asooo-aseoo sais, | — | Mirna 0.034 Inner diameter of shift forks | 08012-05919 (15,9596) Cylinder gauge Icearance "00013-00030 (0.032-0.077) | 0.020105) ©: [Free enth of shift fork springs | 06378-06875 1162°9 5) 08006 (15) | Calpers Fitted toad of shift fork springs | 11.66--14.44 tbs (5.29-6.55 kg) | 8.33 Ibs (3.78 ko) Fitted length of shift fork springs | 0.4528-0.4724 (11.5~12) 10, Free tength of towhi shite fork reese assi2-os7e7 ia’? | og1t8(13) calipers [Fitted load of low:hi shift fork | korn | 15.50-21.32 los (7.03-9.67 ks) | 9104 bs (8.1 ka) _ aaa = “ Fed length ofowhishif’ | 9 4455 o.ase7 aan) fork spring _ emma | 11 [Backlash of spiral drive pinion | (countershaft) and spiral ring | 0.008-0.007 (0.13-0.18) 0.020 (05) Dial gauge ear L = — Bach i Dial gauge inion and ring gear [ecoee ‘ i et : Backlash 3 adjusting met 0.004 and 0.012 (0.1 and |_ 03) 13, |Backlash of differential o ie gauge pinion and differential side gears. | °.004-0.008 (0.1-0.2) coeuue seuss _| rr nner diameter of differential ieee i *o,s006- 0.6025 115'8 5, - ‘Outer diameter of eitferentiat Micrometer pinion shaft e 0.016 _ | ro.se02-0.5090 (15-8 338) Ciearance vere 0.016 (04) 16, [Thickness of the differential é 7 = ickneas of the diferent «0.08 I lsnonce 0.030-0.034 (0.82. 265) 0.024 (0.6) Calipers 39Chapter 3. Tractor Construction and Maintenance ¥M169-169D (Unit: inet omen) No. tem Standard specification Replacement “Testing equipment 6] Thickness of the differential 0.035 (0.9) 0.028 (0.7 Calipers 7 side gear spacers (0.039 (1.0) 0.031 (0.8) 043 17) 0.035 (0.97, (0.047 (1.2) 0.039 (7.0), 17,] Outer diameter of metal 0.020, Micrometer [22x 27x 225 1.0608 1.0622 (27-9,053) Inner diameter of the different berehienl +.0830—1.0638 (27°8 021) - Cylinder gauge [Clearance 0.0008-0.0029 (0.020-0.074) | 0.012 (0.3) 18.| Outer diameter of the final 0.020) = Micrometer reduction pinion 0.8641-0.8654 (22°9'053) eho Taner diameter of metal 70.03) laaeereeee 0,8661--0,8674 (22°9-03) 0.012 (0.3) Cylinder gauge learance (0.0007-0.0033 (0.020-0.086) a 19.|P.T.0. shaft deflection (at tip} : 0.012 (0.3) Dial gauge 20) Piay in direction of rotation = between all gears and shaft | 001210.3) splines | NOTES: (1) Check to see that there is no looseness berween the inner and outer faces of the ball bearings and needle bearings. If there is any looseness, or if any abnormal noises are heard when turned, or if it does not turn smoothly, replace. Particular care should be taken in the case of needle bearings to see that the rollers are not eracked or chipped. (2) If the gears have any uneven wear, galling, or scoring, they should be repaired or replaced, 1) Item 11 through 16 refer to measurements of the differential assembly; Item 12 is carried out at a point 90° from the axial direction of the motive power rotation shaft. Adjustments should be made in the following manner: i) When the same drive pinion is reversed, Use the shims that were fitted initially. ii) When using a new ring gear and pinion: a) Insert shims [(two sizes are available: 0.004, 0.012 in. (0.1, 0.3 mm)] between the transmission case and the transmission case front cover so that there is no space on the 310 counter shaft. b) Fit the differential assembly into the final reduction gear case. c) Insert shims [(two sizes are availabl 0.004, 0.012 in. (0.1, 0.3 mm)] between theQhapter 3 Tractor Construction and Maintenance ball bearing 6207 (right hand) and the cir clip 72 so that the backlash (Item 11) is 0.005 ~ 0.007 in, (0.13 ~ 0.18 mm). d) At this time take care to see that there is no space between the differential housing and the ball bearing 6207 (both sides), the differential bearing case and the ball bearing 6207 (left hand). e) Measure the clearance C between the final reduction gear case and differential bearing case without shims, insert shims equivalent to the clearance C and additional shim 0.004 in, (0.1mm), PARTS 194200-32300 0.004 in. (0.1mm) Shim 194200-32310 0.012 in. (0.3mm) Shim. Counter shatt Clearance ‘ave pinion mre a [) Ditterentit sembly Differential housing 3. BRAKE The brake serves not only to bring the tractor to a halt when in motion, but the left and right brakes of the tractor operate independently of each other and allow the operator to negotiate tight turns. The brake shaft of the tractor is fitted behind the differential lock shaft and is hermetically sealed to prevent water from enter: ing when the tractor is used in irrigated fields. The brakes are the internal expansion, mechanical type. Foot pressure forces the brake linings against the brake drum to brake the tractor. The YM169-169D [Detail A) ‘Transmission case ‘Shims 0.004, 0012 i (0.1.63 mm ‘counter shaft Angular bal beaeing 7208 Packing "Transmissgn case front cover [Detail 8] eS ‘Shims 0,004, 0.012 in, Batt bearing 6207 NT. ml % Leck mats Brake podolsChapter brake linings/shoes are of the leadingstrailing type, and the same amount of braking force Tractor Construction and Maintenance The parking brake consists of a locking device coupled to the foot brake. produced for both forward and reverse motion. em Specifications Type Internal expansion mechanical brakes Method "| Anchor pin method ‘Aetivation = Foot pressure [Location Reduction pinion ~ Functioning | Independent function for left and right sides (may be coupled as needed) | Lin Specical woven material Brake design Leading trailing shoes Brake adjustments ‘Accomplished by adjusting length of the brake rod Parking brake Locking of the foot brakes 3-2 Inspection and Maintenance Uni ineh mm YM169-169D Seetnae Mlustration Tae SER [once ine [en raid 70°) | ‘Out side O85 7 7 | ‘digmeter of MW gs 002 Thickness of i ~ ee och i, ~~. | we 24 |brate cam [80S | Clearance /0,0020—0.0080 - a a 10.05-0.193) 0.12 (0.3) 312Chapter 3 Tractor Construction and Maintenance ¥M169-169D ten ss nepiacernntit [Feng eavipment ‘wosvation Inner giam — |9,0921-0,0080 = [ovtinder gauge Mike prot |1252°3"%) [Seam [oaeee- ones ~ Wieronetr mer fee ‘pedal shaft (23 o.062) ‘Clearance [0,0079-0.0158 (0.2-0.402) 0.04 (1.01 3 | Sinkna ot ~Teaines - ~ Broking ur oo2ios) tisha Elect [oesa 8 236 (60) | brake : pedal play 0.79-1.18in {(30~30mm)— Adjustment nut | Lock nuts Brake pedals ores: (1) The left and right brake linings are interchangeable, and it is a good practice to rotate them from time to time to have even brake wear. (2) In adjusting the brakes, adjust che play by extending or reducing the length of the tumbuckle on the brake rod. (3) Always make sure that the play is the same for each side. Otherwise, if the brakes fare interlocked and used to bring the machine to a halt or to reduce speed, the braking forces for the left and right side will be uneven and the tractor will pull 10 one side, which is extremely dangerous 4, HYDRAULIC LIFT DEVICE The hydraulic lift device is for handling imple- ments. The hydraulic oil is the same oil used for ‘the transmission, and contributes greatly to re- duced maintenance cost since the operator does not have to maintain various types of lube oils, ‘The so-called single-action type hydraulic system lifts implements hydraulically but allows them to be lowered by the force of their own weight.Chapter 3 Tractor Construction and Maintenance YM169-169D 41 Specifications tem ‘Specifications 1. [Hydraulic pump type GP1-c-5C 2. [Hydraulic pump discharge volume 3.43 US gals (130)/min. at RPMs of 2600 [0.0013 US gals/rev (5 oc/rev)) 3. | Low pressure pipe Die 0.78 in, x 0.079 in, (22 mm x 2) [ 4. [High pressure pipe | Dia 0.47 in x t 0.059 in (12 mm x 1.8 t) 5. | Hydraulic control relief pressure full flow | 1664 psi (110 kglem* | 6 | Hydraulic cylinder bore 2.36 in (60 mm) eee 7. | Hydraulic piston outer diameter | 2.36 ie (60 mmm) al & | Hydraulic piston rod Dia 0.98 in x L 4.57 (25 mm x 116 mm) ©. | Lift erank (length) 2.95 in (75 mm) 10. Lifting shaft (length) 8.74 in (222 mm) More than 1210 tbs (560 kg) 12._| Full stroke lift time 1.1 sec at RPMs of 2600 13,__| Lift arms (lenath) 9.84 in (260 mm) 11. Lifting eapacity at tip of Lower link 4-2 Inspection and Maintenance Chapter X1, Section 6 for details on assembling the hydraulic system. Unit: inch (ene) Wo, ten Standerd specication Replacement Testing equipment 1 Rei vaive presure (sate = - 2 2 eee 1564 psi (110 ka/em?) ~ 7 finns diameter ofthe litng soft 1.1891] 1808 i cyte gause busing ett side) | a0°9028, | user diameter ofthe iting shat! 1.1795) 1608 —— Micrometer et side) (30-3 928) [Glesvance etesize) —-—=«*d; 20008-00026 (0070-0066) | O.016(08) — 3 linn diameter ofthe titig | 1.37801. 9796 vier gauge that bushings ight) | (35*R088) | lover diameter atthe iting | 1.87562) 3770 ro Micrometer shaft (ight side) (35-9.925) ewance waht wide) (00010-00098 (0025-0088) | 0.016.104) angQhapter 3 Tractor Construction and Maintenance ¥M169-169D Unit: inet (mem) No. tem Standard specification Replacement limit | Testing equipment Hydraulic cylinder bore 2.3622-2.3661 Cylinder gauge { 60'S) jo) Outer diameter of hydraulic | 2.9598-2.3610 Micrometer piston 968) 0.030) clearance 0.0012-0.0063 (0.030-0.16) 5. Lifting capacity atthe tip of | More than 1100bs 7 ] lower lnk | (600 ka) NOTES: (1) The components of the hydraulic equipment are fitted selectively and are precision {finished by lapping, thus when they have been disassembled for maintenance, the follow. ing points should be bore in mind: i) Donot interchange spool: fi) Check beforehand the mumber of hydraulic pressure adjusting shims fitted, and ‘make sure the correct number are used in assembly. il) When assembling, components such as O-rings should always be replaced. (2), When assembling hydraulic cylinder: Be sure to align the assembly guide marks on the lift shaft, lift crank, and lift arms, (3) Make sure that each section of the system functions properly as it i assembled, Also check the working pressure of the safety valve with a pressure gauge after the final assembly has been completed, “ss | pune mark Punened mar Punched mark {Box seshChapter 3 Tractor Construction and Matntenance 5. STEERING The steering system must provide excellent steer: Steering worm Column bush Suen pp Column jacket Adjusting shies 5-1 Specifications YM169-169D ing performance during operation. This tractor has a ball-nut type steering system. Ball joint Dust cover Springs Socket “Soring Unit: inch (ene) tem e Specifications Tractor model — M169, YM1690 Type __ Ballscrew Gear ratio = 1891 7 ‘Angle of motion of center shaft 2x4 [Sector gear module 35 [No of teeth of sector gear on full circle basis 15 Worm lead LL 0.344 (8,731) =| Direction of twist of the worm gear ‘tet ~ Lubrication Oil ~ Grease Outer diameter of ste aaa a ‘Steering wheel play 5-2 Inspection and Maintenance The steering gear box is capable of withstanding heavy use, and there is rarely any need to dis assemble it for maintenance work Backlash adjustment can be done by varying the number of adjusting shims fitted on the side of the gear box. Steering play adjustment can be done by adjust: ing the backlash of the gears. By turning the screw to the right, the amount of play can be reduced. (The standard position fr the screw is a quarter-turn back from the point at which the screw suddenly becomes hard to turn.) NOTES: (1) Check whether the drag rod is bent, (2) Check whether the ball joints function smoothly.Ghapter 3 Tractor Construction and Maintenance 1.17-20in (80-50 mm) 6. FRONT AXLE The front axle is a Lemoine type axle supported by a center pin. It serves to keep the front end of the tractor on an even keel when travelling over rough terrain where the left and right wheels 6-1 Specifications YM169-169D ‘Steering gear box Tas ply ela cee 6, ( SN go over irregular depressions and mounds, and it also provides good steering qualities. Other fea- tures of the Lemoine type axle are that it pro: vides high ground clearance and it is rugged and therefore very durable. Unit: ineh(enem) vanes vmteo0 Tread 303 (770) 29.3 (745) Tiresizee 450-10-2PR 5-12-2PR Teor rest 28 Taps (125i) cm?) cm?) Camber ~ ° core : 7 Tal oa 1s) 3 317Chapter 3 Tractor Construction and Maintenance ‘M169-169D I |Adivst toni uot ba /Ate= ots ~ostsin. [oe a: Camber angle — provides stability in steering and straight line performance. B: King pin inclination — reduces steering effort. Caster angle — improves directional stability. Trail — distance between point at which an imaginary line extending from the axis of the king pin intersects with the ground and the point at which an imaginary line extending perpendicularly from the axis of the wheel intersects with the ground, ae Toe-in: The difference between A and B. Serves to improve directional stability. Because of the camber angle, the left and right front tires each try to roll forward out wardly. This is prevented by the tie-rods, and so a certain amount of slippage is created on the ground surface, and directional stability tends to be impaired. To remedy this, the toe-in should be adjusted. aigChapter 3 Tractor Construction and Maintenance YM169-169D 6-2 Inspection and Maintenance [Model: YM169] Unit inh tn Wo tm Standard wectcation Replacement Umit | Testing equipment “1. [inner diameter of king pin bush- | 0.9850—0.9871 T - Cylinder gauge ina (25 19972) (Outer diameter of king pin | 0.9822-0.9843 _ Micrometer j (25.8 50) : 0,0008-0.0049 (0.020--0.124) 0,016 (0.4) | 7|Up and down lay of Kia pin | 00118-00421 (03-107) | Lessthan0.07 20) | Dial guge 3.[inner diameter of center pin | 0.8665-0.8693 = cylinder gauge ushings (a2i9.98h) [Outer ime of eonter in| 0884)-Da867 i Wieromets | (22_9.052! Clearance 0,0004—-0.0052 (0.01—-0.133) 0.016 (0.4) t- — . ~ -+ 4.|Front and bak play of eanterpinf 002005) | Diol gavge | NOTES: (1) The king pin is integrated with the knuckle spindle so the spindle should be ‘checked for cracks. (2) Replacement of the king pin bushings is done by press{fitting the new ones in (3) If there is excessive up and down play of the king pin (Item 2 above), insert at ditional upper covers) (4) When the front hub bearing becomes worn, the front wheels will develop a shimmy {a steering vibration or flutter in the vicinity of the kingpin), which will impair steering stability, therefore, particular care should be paid ro the front huh bearings when the Sront hub is disassembled. (5) To adjust the toe.in, frst draw lines representing the center of the tire tread and the horizontal center of the tires, and adjust the distance between the two wheels at the front and rear of the tires. The actual adjustment is made by turning the turnbuckle 10 adjust the length of the tierods; after che adjustment has been completed, tighten the locknuts securely. 319Chapter 3 Tractor Construction and Maintenance ¥169-169D 6-3 Inspection and Maintenance [Model: YM169D] Unit: inch (mem) rs Tana Tapes Tere Ne ‘specification ment limit equipment 7 fx done con ees = Cynge amet seen sor said 3 (229082 Sevan 008 5 (0.010.133) ee dnote aon Oalonee a ere eae gomcpore | cowrany | Fore and aft play of ce 4 | inner diameter of king pin bevel ‘Outer diameter of inner coll chon No. Mem Standard specification Replacement limit | Testing equipment 1) beam etl mnt 0.004-0,006 (0.1-0.15) 0.020 (0.5) Micrometer 6 [Beat cf strona pon and | gop4-c008 (01-02) oom108) | Meromew 7 Inve deter of itereni pinion = Cynder ge or oi +o.so06-o.s028 15°95 ute diameter of eitterent pinion _ ae . . 15-0016 a ase02-0 5800 (15:99) ” cirrece eee tens ate oa @ | Thekaes of tterenna pion ner | 0070-0004 (089065 | 002 08 caper T © | Tones of deren de eo 235 091 e078 on cals hneeaed 0.039 (1.0) 0.031 (0.8) aoe nn 0035 091 [oor (0.039 11.0) 3.20Qhapter 3 Tractor Construction and Maintenance is carried out at a point 90° from the axial direction of the motive power rotain shaft, and the adjustments are made in the following manner: i) When the same drive pinion and ring gear are to be reused, remember without {fail t0 use the shims that were fitted initially. ii) When using a new ring gear and pinion a) Use a mandrel instead of the differential carrer and use the shims {(two sizes ‘available: 0.004, 0.012 in (0.1, 0.3 mm)] between the front axle and front axle case cap to adjust the reading for A 10 06280 ~ 0.6319 in (16 * 0.05 mm} b) Fir the differential assembly with the front axle case. c) Insert shims [1wo sizes available: 0.004, 0.012 in (0.1, 0.3 mm)) between the front axle (L) and between ball bearing 6207 so that the backlash (Item 6) is 0.005 ~ 0.007 in (0.13 -0.18 mm). Baty M10 Be yee YM169-169D Drive pinion Fromm im 7 9 bearing 6207 | MBncret c J shins 004 90120 JSS ‘A: 0,6280-0.6319 in, (1620.05 mm) (01,03 mem} 3 8: 28043-26016. 2.99, mo) Bal bearing 8207 Ditranil towing ©: 2.362 in, (60.1) D: 6.0814-6.0620 in, (154_2 gyms 6,0614-6,0620 in, (154_2 4mm) d) At this time, be sure that there is no space between the differential housing and the ball bearing 6207 (both sides), the front axle (Land ball bearing 6207 (lighchand e) Insert shims 10,004, 0.012 in (0.1, 0.3 mmj} between the front axle (R) and front axle case so that there is no space at the places mentioned in Item (d). f) Item 11 through 14 refer 10 measurements for the bevel gears in the front ‘gear cases; the adjustments are made in the following manner: (1] When using the same bevel gears, remember without fail 10 use the shims that were fitted inivaly 322Chapter 3 Tractor Construction and Maintenance YM169-169D oi: inch (men Standard speciation | Replacement iit ‘Testing equipment 10 | Bocklsh between dive pinion anc ring ger SS : Backlsh a: adjusting shims 10.008 and 0.012 101 9nd 0.9) Backlash b:agjusting shims (0.004 and 0.012 10.1 3nd 0.3) Dist gouge 15 [Backlash of bevel gar 15 and bevel vwaen a gears and shat splines [eee 004-0012 01-03) oom 08) = +12 | Bocklash of bevel gear 13 end ~ —— ee 004-0012 01-031 02 041 Dt ane 13 | Baton perme wn gor 8 Songs ga | Tal te | eckinh :sing stime Ot pune | 0,004-0.012 (0.1-0.3) 14 | Backlash between the kingpin Srcisttnare Seam Tooth No.13 | | tan nos | socks a ating ime SST alexa enir - aor 031 NOTES: (1) Check ta see that there is no looseness between the inner and outer laces of the ball bearings and needle bearings. when turned, or do not tur smoothly, replace. Particular care should be taken in the case of needle bearings 10 see that the rollers are not cracked oF chipped. (2) As for the gears, if there is any uneven wear, galling, oF scoring, they should be repaired to replaced. (3) Item 5 through 10 refer to measurements for the differential assembly; Item 10 321 If this is the case, or if they emit abnormal noisesCHAPTER 4 TRACTOR ASSEMBLY 1. GENERAL ASSEMBLY wad 2, TRANSMISSION ASSEMBLY 1202022002222 1111 43 2-1 PTO Driving Shaft Assembly 43 22 PTO Fork Shaft Assombly ag 2.3. Front Drive shaft Assembly (YM1690) 45 24 Front Drive Shift Shaft Assembly (YM1690) 45 25 Driven Shaft Assembly 46 26 Counter Shaft Assembly a7 27 Low-High Shift Shaft Assembly 48 2.8 Main Change Shaft Assambly 48 29. The Fork of the 2ndi/3rd Speed Shift Shaft Assembly 49 2:10 Reverse/Ist Speed Shift Shaft Assembly ‘410 2-11 Main Shaft and Transmission Front Cover Assembly aay 2:12 Gear Shift Lever Assembly 42 2.13. PTO Reduction Shaft Assembly 43 2-14 Connecting Shaft Assembly 443 2:18 PTO Shaft Assembly ana 2.16 Differential Lock Shaft Assembly ais. 2.17 Final Reduction Pinion and Rear Axle Shaft Assombly 416 2.18. Differential Device 418 2.19 Cam, Differential L ‘Assembly 420 3, FRONT AXLE ASSEMBLY 341 For 4iNneel Drive (¥M1690) 3:2 For 2)Wheel Drive (VM169} 33 4 4 Differential Device Assembly (¥M1690) 423 CENTER PIN ASSEMBLY ....... 424 1” For 4:Whee! Drive (YMI69DI 424 42__For 2:Whee! Drive (YMAT69) 4.25 5. BRAKE DRUM ASSEMBLY. pape 6. HYDRAULIC SYSTEM ASSEMBLY - 427 6-1 Cylinder Head Assembly 428 62 _ Lifting Shaft, Lift Arms, Lift Crank Hydraulic Piston Flod Assembly 429 63 Contral Valve Assembly 431 64 Hydraulic Control Fork, Hydraulic Control Lever Assembly 65 Auto-return Rod, Operators Seat Bracket Assembly 66 Slow Return Valve Assembly 67 _LiftArm Assembly 68 Operational Precaution PointsChapter 3 Tractor Construction and Maintenance (2) When using new bevel gears, {) Insert shims [two sizes available: 0.004, 0.012 in (0.1, 0.3 mm)] between the bevel gear 15 and ball bearing 6304 so that the backlash (Item 12) of the bevel gear 15 and king pin bevel gear 18 is 0.004-0.012 in (0.1-0.3, mm). i) Insert shims [wo sizes available: 0.004, 0,012 in (0.1, 0.3 mm)} between the front gear box and front bearing case 30 that the backlash (Item 13) of the bevel gear 36 and bevel gear 13 is 0,004~-0.012 in (0.10.3 mm). cauTion: 1) Figures at the end of gear indicate the numberof teeth 7.REAR AXLE 7-1 Specifications YM169-169D Mode! term Fear axle type T yM169/1690 ~ Half-floating type Tread adjustment in (700-850 mm) Tire size: Standard ee oneesl 8-16-4PR FD (Tur tire) Standard air pressure ; Standard 22.8 psil1,6 kg/em?) Optional | 22.8 psi(t.6 kglem*) (Turf tire) 7-2 Inspection and Maintenance No. tem specification FReplaceme 0.969-0.988 cuter siometer st . 5 Micrometer Suter bearing (2898728 000) cuter tapers at . 0.868~0,868 in m inner bearing (221000722 033) erometer 323Ghapter 3 Tractor Construction and Maintenance ¥M169-169D 324Chapter 4 TRACTOR ASSEMBLY 1. GENERAL ASSEMBLY 1) Attach the clutch disc and pressure plate to the main drive shaft, insert the shaft in the fly- wheel, center it, and then secure the pressure plate to the flywheel with bolts. NOTE: Make sure that there is no oil on the mount ing surfaces of the flywheel and pressure plate. 2) housing. the main drive shaft into the clutch 3) Move the tractor towards the engine, and attach the engine and tractor. NOTE: Check 10 be sure the PTO main drive shaft is correctly joined to the joint. 4) Assemble the tachometer cable, drag rod, throttle rod, and decompression rod. NOTE: All split pins should be replaced with new ones. 5) Attach the fuel oil pipe to the fuel pump. Open the filter cock. Bleed the fuel system of air at the fuel pump. Attach the return pipe to the fuel injection valves. NOTE: Replace the copper packing, 6) Attach the hydraulic pipes. NOTES: Replace the copper packing on the tractor side; make sure that O-rings are in position om the en. sine side 4) Attach high and low pressure pipes to the tractor side ) Attach high and low pressure pipes to the engine, ¢) Secure pipes with pipe clamps 7) Mount the battery. Connect the positive and negative terminals. NOTES, 4) Be sure the cushioning inserts are in position. bj Secure the battery clamp firmly in position 8) Attach the front grille. 9) Carry out electrical wiring (refer to the wiring diagram). 41 YM169-169D 10) Attach the hood. 11) Attach the muffler. 12) Put in transmission lube oi. [ASSEMBLY CAUTIONS) 1) When assembling the gears, fork, and fork shaft be sure to pay close attention to the color direction and position. Pay close attention to the illustration so that they are put in properly. 2) The last figure of the gears indicates the No. of gear teeth, 3) In the event that there are no instructions for installing the oil seal, it should be installed so it is flush with the outer edge as shown in the illustraion, 4) Oil Seal Lip. To prevent damage to the O- ring, installation should begin only after the shaft and hole have been checked for any sharp edges. In the event that there are sharp edges they should be removed. 5) Be sure that the spring is completely install: ed inside the oil seal. Check that it does not stip out of the slot in the inside of the oil seal. 6) When inserting the Gil seal in the shaft be sure that the lip does not turn up. If the lip turns up, pull it out of the shaft a little, Insert the seal in the shaft again turning it lightly with your fingers, it should return to its correct condi tionsQhapter 4 Tractor Assembly \ dooms 7) Be sure to apply grease to the inside of the oil seal lip to prevent damage to the lip. Also before installing apply grease to both the lip and the shaft. 8) . Be sure to apply grease to the O-ring and to the O-ring oil seal, and to the slot, shaft and hole before installing. 9) Pressfit: To prevent deforming the bushings and bearings during press fitting be sure to use ei- ther a mandrel or an appropriate press fitting too! for this operation. 10) When assembling the bearings do not hit them directly with a hammer. Use a drive-in too! and plate as much as possible and hit them with a hammer if needed. 11) When assembling the gear and stepped collar, be sure to put them in the right direction. Pay spe. cial attention to the direction of the gear chamber. 12) Tighten the bolts and nuts to their specified tightening torque. The screws are made of light, alloy and should not be overtightened 13) Use caution when unpacking, get rid of the old packing, and completely remove any oil that is on the surface with thinner. After it has com: pletely dried apply bond 42 ¥M169:169D 14) Apply the proper amount of bond to the packing, and be sure that none gets on the inside of the case or the surface of the teeth. It can lead to a clogged oil strainer or its malfunction. 15) Apply bond to both sides of the packing, 16) The circular ring and circlips sometimes be- come weak after they have been removed, con- sequently check them before assembly. 17) The following points should be observed when connecting the “housing assembly clutch” to both the transmission case and the gear case assembly final reduction: a) When the main transmission is in the neu: tral position the P.T.O. transmission is in either Jor 2. b) It is connected to the P.T.O. shaft when the latter moves clockwise. 18) When assemblying the clutch disc assembly, six bolts 8 x 20 should be attached after they have passed through the shaft and main driving. 19) When bending the cotter pin downwards, bend it completely, along the nut or set pin. Even when the set pin diameter is small, making the procedure difficult, bend and set it so that it does not exceed the washer diameter.Qhapter 4 Tractor Assembly. 20) Drive-in Direction of the Roll Pin: Set the crack at a 90° position from the load direction. When driving in dually, the inside roll pin crack should be positioned at 180°from the outside roll pin crack. 2. TRANSMISSION ASSEMBLY 2-1 P.T.O. Driving Shaft Assembly 1) Fit the (2) circlip 25 to the (1) P.T.O. driv: ing shaft. 2) Fit the (1) P.T.O. driving shaft into the transmission case from the final-reduction gear case side, while fitting on the (3) collar 25.5 x 32 x 32.2, (4) liner 25 x 33 x 1.6, (5) P.T.O. re- duction gear 19 , and the (6) liner 25 x 33 x 1.6. Fit on the (7) circlip 25. 11) 82.0. ariving smote | (9) ci p25 (70) Bat bearing oar 16 / 303, cusen AEA fein ff ETO; 3 ¥M169-169D 3) Fit on the (8) P.T.0. sliding gear 16 and fit fon the (9) circlip 25. 4) To the assembled parts of (1)—(3), fit on the (11) liner 25 x 33 x 1.6 and press-fit the (10) ball bearings 6303, and (12) 6205. NOTES: 4a) Apply grease to the inner surface of the (5) PLI.O, reduction gear. ) Construction Difference in the (1) P.T.O. Driving Shaft (7) Cwretip 25 (6) Linge 2515340.6 (8 sn 8 6) cot (99 ine 25083818 erent | 92) Bat bearing Jf warcicio2s 6208 / Nea ear eae ride Va) Liner 25:3351.6Chapter 4 Tractor Assembly YM169-169D 22 P.T.O. Fork Shaft Assembly clutch housing side. Put the (2) P.T.O. shaft fork 1) Attach the (4) O-ring P11 to the (1) P.T.0, _'” te center Position. fork shaft. 2) Insert the fork of the (3) P.T.O. shaft fork into the slot on the (2) P.T.O. sliding gear. 3) Attach the items in step (1) and (2) from the “Transmission case @)ORING PI va corren ems ee FE, “ STEEL BALL 5/16 one foc wt nt0 0.540 rom. A 12) 92.0, sliding gear 16 (e 502" (127.5 me) _ 44Chapter 4 Tractor Assembly 2-3. Front Drive Shaft Assembly (YM169D) 1) With the (1) front P.T.0. shaft in the trans: mission case, insert on it the (3) front P.T.0. sliding gear the (4) collar 20.5 x 25 x 40, and press-fit the (2), (5) ball bearings 6303 and 6204, 2) Insert the (7) bearing retainer in the trans: mission case, and then insert the (6) oil seal 20357, and the O-ring P-41 (2) o-ring P41 | (7) Bearing etainer {6} Oi es! To20357 18) Bal bearing 6208 (1) Front P70, smote, / rH (4) cottar } (20.5x25040 YM169-169D NOTES: 4) Be sure to check the gear direction, bearing position and shaft direction (21 Front P.7.0, sing gear 24 { (2) Bat bearing 6303 = ciuten nowsing se 2-4 Front Drive Shift Shaft Assembly (YM 169) 1) Fit the (4) O-ring P11 to the (1) front P.T.O. shift shaft. 2) Place the (3) front P.T.O. shift fork into the slot of the (2) front sliding gear, 3) Assemble the parts in step 1 and 2 from the clutch housing side. (1) SHAFT, front 1.0. ss (2) Front siding gear 25 (21 FORK, front P..0. ste (4) ORING PI Yo ome sear case de SHIFTER, front P.T.0, change Ciuteh housing side (ay STEEL BALL 5/16 — (3) SPRING, shift fork tA [7 Fin edvevion / i ‘gear case side s f Sorren pn 7 So a 4.25" (107.5 men)Chapter 4 Tractor Assemb' ovr 789-169 2-5 Driven Shaft Assembly (11) finer 17 x 30x 1. 1) Fit the (3) circlip 25 to the (1) driven shaft. 3) Press fit the (2), (12) ball bearings 6303. NOTES: 2) After step 1, with the driven shaft in the ‘transmission gear case, insert the following from the final reduction gear case side: (4) collar 25.5, x 32 x 24, (5) driven gear 15, (6) collar 25.5 x 32 oy x, (7) driven gear 18, (8) collar 25,5 x 32 x 24 (9) driven gear 13, (10) driven gear 25 and the a) 11 is easy 10 drop the (11) liner during assembly so handle it securely. Be sure t0 install the (5), (7) and (9) gears in the correct direction since they perform chamfering ‘on one side. (5) Driven gear 15, (12) Ball bearing 6303 44) Liner 17x30x4 (10) Driven gear 26 004 (4) Collar 25102326 (9) Deiven gor 13, ey A Camtering (2) Ciclo 25 (2) Ball beating ee (1) Driven shaft i = wh & Clutch nowsing side ee {12mm nt ot} as Final reduction e E = FD gear case side GB T Sz) 16) Collar 25.6%32x31 \ brown ga 18 1) car 25. s102024 46Chapter 4 Tractor Assembly ¥M169-169D 26 Counter Shaft Assembly 1) Insert the (2) double row angular ball bear- ings in the (1) counter shaft, and attach the (3) circlip 25. 2) Following step 1, with the (1) counter shaft in the transmission case, attach the following from the final reduction gear case side: (4) liner 25 x 33 x 1.6, (5) low-high reduction gear 34, and (6) liner 25 x 33 x 1.6. Attach the (7) circlip 25. Then put in the (8) low-high siding gear16 and attach the (9) circlip 25. Put in the (10) front driving gear (11) liner 20 x 38 x 1, (12) metal 20 x 25 x 22, (13) reverse gear (14) liner 20 x 35 x 1 and the (15) collar 21 x 27 x 36.5 3) Press fit the (16) angular ball bearings 7204. NOTES: a) The (10) front driving gear is only for the YMI65D, for the YMI65 use collar 25 x 32 x 9. (16) Angutar bat bearing 7208 | (18) Cotta 29%27436.5, FP a eu [4 36Ssu [| (nay reverse geor 14194 [| ogee | amy, af aie Chamtening 1.437 (36:5) Claten mousing se (0) rep 28 \,\, Stor Front desing ae 21 \\ 110) Liner 20x38 that mers 20x26%22 1b) The left and right surface of the inner lace of the (2) double row ball bearings are different. Insert the Digger side next to the pinion side as shown in the illustration, c) Be sure to apply grease to the inside of the (5) Iowshigh reduction gear 34 and the (13) reverse gear as well as t0 the outside of the (12) metal 20 x 25 x 22, (7 Gwen 25 | 16) Liner 25%3341.6 (1) Counter shart | J tsi towngn reduction | (9) Citi 25 i a a wie | | fess Final reduction \ ear care de {8} Low:high sliding gear 16 a7ter 4 Chapter 4 Tractor Assembly ¥M169-169D 2-7. Low-High Shift Shaft Assembly 3) Attach the (5) circlip 15 to the (1) low-high shift shaft (step 1) from the clutch housing side. 1) Fit the (4) shift shaft, "ring P11 to the (1) low-high 2) Place the (3) low-high shift fork into the groove of the (2) low-high sliding gear 16. SHIFTER, low high change COTTER PIN 2420 (1) SHAFT. ow nigh ate = ‘SPRING, low-high (2) Lovenigh siding gear 16 Shane, waster SREY nition 13) FORK, fowigh shite F = sTeEL BALL sie (4) O-RING PI Cluten housing f side LIF Finat reduction (e) cIRCLIP 15, a 567" (144mm) 2-8 Main Change Shaft Assembly 1) Onto the (1) main change shaft put the (3) collar 25 x 30 x 11, and the (4) main gear 31, fit on the (5) circlip 25; and then put on the (6) 2nd/3rd gear (7) Ist/reverse sliding gear (refer to Note 'b’), and the (8) liner 15.5 x 28x 1 2). Press-fit the (2) ball bearings 6303, NOTES. 4a) Differences in construction of the (1) main shaft: {61 2od/3ed siding gear 14797 Oe) cucu 2e rs | [OSes 31 Sot te) une 15528007) ea 7512001 T (1) Main change | Pee cates nots y | V ABE sa nccon aly a Se rl i = enumteneg 48Chapter 4 Tractor Assembly 29 The Fork of the 2nd/3rd Speed Shift Shaft Assembly 1) Attach the (4) 3rd speed shift '0" ring P11 to the (1) 2nd/ 2) Place the (3) 2nd/3rd speed shitt fork into the Slot of the (2) 2nd/3rd sliding gear. 3) To the assembled parts of step 1, attach the (5) E-Retaining ring 12. 4) Place the (3) 2nd/3rd speed shift fork into the center position, 0.39" (10mm) 3.09" (78.5) Ja) FING PIT (2) FORK, 200/31 speed site | 028" omm | | (0 SHAFT, 2nd spec sit | STEEL BALL 5/6 SPRING, sit fork i= a i ——+ E-Retsning ring 12 0g" 17 49 ¥M169-169DChapter 4 Tractor Assembly ¥M169-169D 2-10 Reverse/'Ist Speed Shift Shaft Assembly 3) Insert the part in step 1 from the clutch housing side. 1) Attach the (4) “0” ring P11 to the (1) Re- verse/1st speed shift shaft. 4) Place the (3) Reverse/Ist speed shift fork into the neutral position, (center slot). 2) Place the (3) Reverse/Ist speed shift fork into the slot of the (2) Reverse/1st sliding gear. (10.5mm) 4) O-RING PI (3) FORK, eoverte/tat seed shift STEEL BALLS SPRING, sit fork Ey n = fat secon i 5 ms i vena espe sit sear cane ide (21 Astros siting gear 25 Ctuteh housing side | a | “(170mm 410Qhapter 4 Tractor Assembly, YM169-169D 2-11 Main Shaft and Transmission Front Cover Assembly 1) Insert the (3) liner 16 x 21 x 1, and the (4) needle bearing into the (2) main shaft. 2) To the assembled parts of step 1, press fit the (5) ball bearing 6205NR, and attach the (6) circlip 25. 3) Press-fit the (7) ball bearing 6204 into the (1) transmission case front cover. 4) To the assembled parts of step 1 and 2 in sert the assembled parts of step 3. From the front insert the (8) main shaft spacer and the (9) oil seal TC20357. 5) Apply packing to the transmission case. 6) Attach the assembled parts above (step 1-4) to the transmission case, and secure with (11) copper packings (10 pes) and (12) bolts 8 x 20 (10 pes). NOTES: 4a) During step (6) ie i easy't0 drop the (13) main change shaft’s (14) liner 15.5 x 28 x 1 and the (4) needle bearing. It is therefore recommended that grease be applied to them to prevent dropping them. Also be sure that the (4) needle bearing will bear the load weight evenly [tonsa (1) Transmission cate front cover 1719) 0 seal 7.020357 (6) Creip 25 | 16) Main hate (7a 6 pearing 208 ceca (2) Linge 16x2%a (14) Liner 15.542841 Needs besring toxin Tens 201) (33) MAIN CHANGE SHAFT (11) PACKING 8 copper (12) 80LT 820 (101 PACKING, transmision caseChapter 4 Tractor Assembly eT 169-1690 212 Gear Shift Lever Assembly 1) Insert the (4) gear shift ball onto the (2) gear shift lever, and secure it with the spring pins 5x 40, 3x 40, 2) Attach the parts assembled above to the (16) transmission case cover. Put the (7) gear shift lever spring and (18) plain washer 12 on the (2) gear shift lever, and attach the (5) circlip 30, and (17) circlip 12. 3) Place the (15) safety guide into the (14) transmission case upper cover slot. (1) Gear shift ever knob (2) Gear ste lever, —— (3) Rubber boot \ (4) Speed change shifter ball x {5} Cireip 30 \ 5x40 16 sen on 83 {01 Shit ever soning (8) Cuchi 50 a (10) Copper packing 8— (9) Bott 8120. (19) oir 8416 — (12) Spring washer 4) Insert (13) packing between the assembled parts of steps 1, 2 and 3, and secure with the (10) copper packing 8 (4 pes), and (9) bolts 8 x 20 (4 pes). 5) Place the (3) rubber boot in the position shown in the illustration, and secure it with the (8) circlip 50. Attach the (1) gear shift lever knob. 6) Insert the (19) transmission case upper cover packing between the assembled parts (step 1-5) and the transmission case. Secure it with the (12) spring washers and (11) bolts 8 x 16 (8 pcs). (13 Transmission case cover packing — (14) Transmieson ease upper cover (15) Satery guide 19) Transmission case upper cover packingChapter 4 Tractor Assembly YM169-169D 2.13 P.T.O. Reduction Shaft Assembly 1) Insert the (2) bushing into the (1) P.T.0. re- duction shaft as shown in the illustration. Put the (3) one-way clutch (B), and (5) collar 25 x 30 x 34 on the (1) P.T.O. reduction shaft, and attach the (4) circlip 25. 2) Press-it the (6) ball bearing 6205 into the final reduction gear case. From inside the final (4 Ciel 25 (3) One way eluteh (8) (2) Bushing (5) Collar 25x30434 | / ori. / shat (1.0. reduction case, put the (7) P.T.O. reduction gear through the parts assembled above. Press fit the (8) ball bearina 8304 from outside, and attach the (9) differential lock shaft ring {61 Bal bearing 6205, [ {71 P-.0, eduoton gar 16 (2) Bat besvng 6304 r (9) Differentat lock shat ving (45mm) —H 2:14 Connecting Shaft Assembly 1) Place the (2) spring, and (3) one-way clutch Aon the (1) connecting shaft, and attach the (4) circlip 21 (819.3.9 dig | | sioierieat tiicomeciog tan (2) serra 2) Attach the parts above (step 1) to the P.T.O. reduction shaft (step 2-13) 3) Fit the (6) circlip to the middle of the (5) P.T.O. driving shaft joint. Insert the (1) connect: ing shaft. 1-13) Oneway clutch (A) (a) iret 21Chapter 4 Tractor Assembly ¥M169-169D 2.15 P.T.O. Shaft Assembly 1) Press-fit the (10) ball bearing 6205 into the center of the final reduction gear case. 2) Engage the (9) P.T.O. shaft gear 24 conto the P.T.0. reduction gear 3) _ Insert the (2) seal collar 30 x 40 x 15 on the (1) P.T.O. shaft, then press-fit the (5) ball bearing 6206 and (7) collar 30.5 x 37.5 x 20.5, and attach the (8) circtip 30, 4) Insert the (6) transmission case rear cover to the parts assembled in step 3. Attach the (4) penne shaft gear 26 \\ Gireip 30 0) Cote / 505137.5205 circlip 62, and insert the (3) oil seal TC 40628. 5) Attach the (11) transmission case rear cover Packing to the final reduction gear case. 6) To the assembled parts of step 3 and 4 fit the (9) P.T.O. shaft gear 24 and the (1) spline slot of the P.T.O. shaft. Attach the final reduction gear case, and secure it with the (12) spring washer 8 and the (13) bolt 8 x 25. (6) Transmission case rear cover 45 Ball bearing 6208 y / (4) rene 62 (2) 04 seat T040628 (2) Seat colar 30540415 pr shat pes (110 Teansmasion case ree clover packing (12) Spring masher 8 | ataChapter 4 Tractor Assembly 216 Differential Lock Shaft Assembly 1) Onto the (1) differential lock shaft insert the (13) ball bearing 6204, and the (15) differen: tial lock shaft gear Fit on the (16) circlip 20, Looking at the parts assembled from the back, attach the final reduction gear case from the left hand side. 2) To the other side of the (1) differential lock shaft insert the (2) ball bearing 6204, (4) differential lock clutch gear (refer to Note), and the (5) liner 20.5 x 29 x 1.5. Attach the (6) differential lock shaft ring, and then insert the (7) differential tock spring, (8) liner 20.5 x 29 x 1.8, and (9) differential lock clutch. 3) Insert the (10) liner 30.5 x 46 x 1.5 on the (9) differential lock clutch, and then attach the (11) differential lock clutch ring, and the (12) circlip 20. (0) Diferential lack spring (5) Liner 24.512001.5 16) Differential lock shat ring (2) Balt bearing 6208 + (1) Ditterenta ack shat YM169-169D 4) Diterentat ack clutch gear 14 Ye LX (8) Liner 20.5129%1.5 (9) Osterensa lock eluten (10) Liner 30.548641.5 \ Se reno ae in (12) Grebo 20 445, (92) Batt nearing 6204 —~/ 1181 Ditterentiat ek shat gar 14 ~ (161 Cire 207Chapter 4 Tractor Assembly —_e___—__aeaw—— 169-1690 2.17 Final Reduction Pinion and Rear Axle Shaft Assembly 1. Final Reduction Pinion 1) Press-fit the (4) ball bearing 6206, (6) “0” ring P25, and the (7) seal collar 25 x 36 x 11 on the (1) final reduction pinion. 2). Insert the items assembled in step 1 into the (24) rear axle housing 3) Insert the (3) liner 22.5 x 30x 1, and metal 22 x 27 x 22.5 onto the (1) final reduction pinion, 4) Insert the (5) oil seal TC35508 into the (24) rear axle housing, NOTES: a) Attach the (7) seal collar 25 x 35 x 11 to the inside of the “O” ring slot. 1b) Fit the oil seal TC35508 so it is flush with che ‘edge of the (24) rear axle housing. ©) 4) Length of the final reduction pinion (1) 6.91 in. (175.5 mm) i) Length of the final reduction pinion (R) SAL in. (137.5 mm) dj No. of teeth on the final reduction pinion: 19 Il. Rear Axle Shaft Assembly 1) Fit the (16) ball bearing 45 x 80 x 18, (17) collar 40 x 55 x 39, (19) final reduction gear, (20) collar 30.2 x 45 x 10, and the (18) ball bearing 6306 on the (13) rear axle shaft. 2) Attach the (21) bolts 8 x 16 (2 pes) with a (22) rear axle shaft washer, and (23) locking 46 to the (13) rear axle shaft. 3) Attach the (13) rear axle shaft (steps 1-2) to the (24) rear axle housing, 416 4) Be sure that there is no “play” between the (24) rear axle housing, and the following parts: (16) ball bearing 45 x 80 x 18, (17) collar 40 x 55 x 39, and the (19) final reduction gear. 5) Use the (12) special tool to fit the (16) ball bearing 45 x 80 x 18 so they are in contact as shown in the illustration, 6) Be sure that there are no sharp edges on the (13) rear axle shafts hexagonal part, if there are any sharp edges remove them completely. Fit the (15) oil seal TC507010 on the (13) rear axle shaft to the front edge as shown in the illustration, NOTES: a) Be sure to attach the (17) collar 40 x 5S x 39 and (20) collar 30.2 x 45 x 10 facing the correct direction. }) Clean the (13) rear axle shaft, and remove any ‘grease from the hexagonal part before fitting (on the (15) oil seal TCSO7010. ¢) (13) rear axte shaft length 164 in, (416.5 mm) d) No. of teeth on the (19) final reduction gear: 32 e) Be sure 10 bend down the (23) locking 46 on the head of the (21) bolts 8 x 16 (2 pes) £) Tightening torque of the (21) bolts 8 x 16 9-12 fitbs (1.3-1.7 kgm)Chapter 4 Tractor Assembly (9) na Reduction Psion \S (2) wow 22007228 S\ xc! inet 22.3081 AOA SES a (20 B08 1221 Fear aa (231 Locking 46 (24) ear ane nous (25) Far ante YM169-169D (4 Bal bearing 6208, ~(5) Ot sat To35508 (6) O-ring P25 —17) Seal colar 2exasat —18) Brake drum 19) Lock plate (201 Lock plate 1111 Bote 1016, (19) eae sate sate 195) shatt 00 Seat 45.70 12 (061 Bali pearing 452008 (17) Catt 40455129 18) 8 bearing 6305 gears {20 Collar 20.2%45x10 x16Chapter 4 Tractor Assembly YM169-169D 2.48 Differential Device (19) Spiral ring gear 38 (9) Oilterental rust colar (2) Ditferenta lock pin i, (1 ternal howsing (4) Bat bearing 6207 (2 ct) (72) Liner 22.6190%1 (2 pes) (5) Oiterentiat sie gear spacer (09,10, 1.4. 1.2mm) (11) Ditterengia nee tear 14 (2 pes) | Sowennngmen 0.25 (9) Bolt 8x18 (8 pes) 1) Fit the following into the (1) differential the (11) differential side gear 14 (2 pes) at the housing, the (6) differential pinion liners (2 pes), same time, (8) differential pinion 10, (12) liner 22.5 x 30 x 1, the (5) differential side gear spacers (2 pcs), 2) Fit the (7) differential pinion shaft into (11) the differential side gear 14 (2 pes), and the place after passing it through the (1) differential (3) differential thrust collar. Be sure to put in the housing, (6) differential pinion liners (2 pcs) the right and left (12) liners 22.5 x 30 x 1 (2 pes), (8) differential pinion 10 (2 pes), and the (3) the (5) differential side gear spacers (2 pes), and differential thrust collar. 418,Chapter 4 Tractor Assembly 3) Be sure that the gears rotate smoothly. Ad- just the backlash, if needed, with the (5) differ ential side gear spacers so it is within 0.004—0.008 in, (0.1-0.2 mm). 4) Drive in the (2) differential lock pin through the holes of the (1) differential housing and the (7) differential pinion shaft. 5) Put the (13) spiral ring gear 38 on the (1) differential housing, and fasten with the (9) bolts 8x 18 (8pes). 6) When the (9) bolts 8 x 20 (8pes) are re- moved, clean the bolt and screw hole with solvent and apply lock-tiet then tighten them to prevent from loosening, 7) Fit the (4) ball bearings 6207 (2 pes) on the differential housing, NOTES: 4) When performing step 2, be careful t0 line up the shaft and liner hole carefully to prevent damage to the (6) differential pinion liner. (a) Disassembly (9) Bearing case stopper ¥M169-169D 1b) Apply grease to the outside of the (7) differential inion shaft, and the (11) differential side gear 14 (2 es). ¢) Tightening torque for the (9) bolts 8 x 18: 17-22 Felbs (23-3 kgm]. 4d) There are four kinds of (5) differential side gear spacers i 0.035 in. (0.9 mm) fi 0.039 in. (1.0 mm) fii, 0.043 in. (1.1 mm) iv, 0.047 in. (1.2 mm) {8} Ditfeential ease shim 0,008 i, 0.0012 in. (0.1, 0:3 mn} (7) oitteensiat Dearing case (4) Final reduction goa case (10) Bott 8425 (Apes! (6) Cie 72 (5) Shien 7240.1, 7230.3 (9) Bal bearing 6207 £ - Goat ) (019 Connecting shatt 419 (2) Bat being 6207 (11 tfeentataremblyChapter 4 Tractor Assembly ke}ttNeE 69-1690 1) Take out the (11) connecting shaft. 2) Remove the (10) bolts 8 x 25 (4 pes). 3) Remove the (6) circlip 72. 4) Use a hammer and plate, to remove the (2) ball bearing 6207 out to the left of the (1) dif ferential assembly. 5) Separate the (3) ball bearing 6207 from the (1) differential assembly and the (7) differential bearing case with a hammer and plate. 6) Take out the (1) differential assembly. {b) Assembly 1) Insert the (1) differential assembly in the (4) final reduction gear case, 2) Fasten the (6) circlip 72 on the (4) final reduction gear case, and then insert the (7) differ: ential bearing case 3) Use (5) shims 72 x 0.1, 72 x 0.3 to adjust the pinion and ring gear backlash to within 0.005- 0.007 in. (0.13-0.18 mm). 4) Insert the (8) differential case shims 0.004 in., 0.012 in. (0.1, 0.3 mm) to the position shown in the illustration, There should not be any play in the (1) differential assembly in the arrow direc: tion shown in the illustration. 5) Attach the (9) bearing case stopper, and (10) bolts 8 x 25 (4 pcs) to the position shown in the illustration. NoTEs: a) Be sure 10 bend down the (9) bearing case stopper on the head of the (14) bolts 8 x 25 (4 pes). b) Tightening torgue for the (10) bolis 8 x 25 (4 pes: 15-22 fr Ibs (2.03.0 kgm. 420 2:19 Cam, Differential Lock Assembly 1) Attach the (4) O-ring to the slot in the (3) differential lock cam cover. Insert the (1) differential lock cam, and attach the cam cover boot to the (3) differential lock cam cover. 2) Attach the (2) rear axle housing cover pack: ing to the assembled parts in step 1. Attach the final reduction gear case, and secure it with the (6) bolts 8 x 25. NOTES: 4) Attach the (1) differential cam lock so the spring in hole is in the horizontal positionChapter 4 Tractor Assembly 3. FRONT AXLE ASSEMBLY 3-1 4.Wheel Drive (YM169D) 1) Assemble (1) front axle case (R) and (2) spiral ring gear, 38T assy. Remarks: Backlash of Spiral ring gear should be 0.1~0.3 mm Four shim thicknesses are available as under men: tioned. Shim thickness (A): 0.1 mm x 2 pes. Shim thickness (B): 0.3 mm x 2 pes. 2) Assemble (1) Front axle case (R) with (2) spiral ring gear, 38T and Drive pinion shaft assy. Remarks: Backlash of Drive pinion should be 0.1~0.15 mm, Four shim thicknesses of pinion holder are avail able as under mentioned. Shim A: 0.1 mm x 2 pes. Shim B: 0.3 mm x 2 pes. 3) Assemble (3) Front spindle, (4) Front Bearing Case and Front Final Gear. (1) Front axle Case (Fi) J (21 Spiral ing gear T38 (2) King pin (2)Pinion geoe 713: YM169-169D 4) Assemble (6) Front gear case, (7) Pinion gear, T13, (8) King pin, (9) Pinion gear, T18, (10) Upper front gear case and (11) Gear case cover. 5} Assemble (6) front gear case assy. (As- sembling step: 4) and (4) Front Bearing case assy. (Assembling step: 3) Remarks: Backlash of Front Final Gear, T36 should be 0.1~0.3 mm. Be adjusted by Shim A & B Shim A: 0.1 mm Shim B: 0.3 mm 6) Assemble (1) front axle case (R) Assy. (As: sembling Step: 2) and (12) front axle case (L) with (14) Pinion Gear, T15. 7) Assemble front axle case (L) & (R) assy, and (6) front gear case (L) & (R) assy. 8) Assemble (10) upper front gear case and (15) knuckle arm (L) and (R). (15) Koel am (Ld (11) Gear case cover (0) Pinion gear T18 1101 Upper front gear ease (3) Front spinae ont bearing case 51 Front final gear T26Chapter 4 Tractor Assembly eee 169-169) 3-2 2Wheel Drive (YM169) 1) Assemble (1) front wheel hub, (2) ball bearing 6205, (3) washer 42x51.8x1 and (4) oil seal. 2) Assemble (1) front wheel hub, assy. (As: sembling Step: 1) and (5) king pin. 3) Assemble (6) ball bearing 6204, (7) washer 20x44x3.2, (8) castle nut, M20 (9) cotter pin 4.0x40, (10 cover, front wheel hub (5) and king pin 4) Assemble (11) bush 25x29x30, (12) ball bearing 51105 and (13) oil seal into Front Axle case. 5) Assemble (11) bush 25x28x30, O-ring 1A- hacia 2028, cover of king pin and (5) king pin (After as- ws sembling step 1~4) (1) Key 94 (16) Front axe 6) Assemble (14) key 7x26, (15) knuckle arm and (5) king pin. (11) Bus 252940 (2) castle nut M27 112) Bal bearing 51105 (10) Cover, front whee! hub (131 Oi zest (9).cotter pin 4 0+40- . (5) Kingpin (Washer, 20044%3,2—— ~(2) Bal weaving 6205, {61 Ball bearing 6208 At) Front nas mab 422Chapter 4 Tractor Assembly YM169-169D 3-3. Differential Device Assembly (YM165D, ring gear backlash to within 0.004—0.012 in.0.1— front axle) 0.3 mm). 1) Attach the (2) ball bearing 6305 and the (3) 9) Attach the (18) front axle (L) to the (9) circlip 25 to the (1) spiral pinion shaft. front axle case. 2) Attach the (4) ball bearing 5304, (6) oil seal 10) Attach the (19) front axle (R) to the (9) TC30458, (7) “O" ring G60, and (8) circlip front axle case, 52 to the (5) front axle case cup. 11) Insert shims B into the position shown in 3) Attach the (5) front axle case cup (step 2) the illustration to eliminate play between the (16) to the (1) spiral pinion shaft. differential assembly and the (18) front axle (L) and the (19) front axle (R). 4) Insert the (1) spiral pinion shaft (step 3) into the (9) front axle case. NOTES, a) Insert the (6) oil seal TC 30458 so it is flush 5) Use a mandrel to determine the position of with the end of the (5) front axle case the (1) spiral pinion shaft. To adjust use front axle shims 0.004, 0.012 in. (0.1, 0.3 mm) b) Tightening torque: (11) bolt 8x 30: 9~12 felbs(1.3-1.7 kgm) 6) Attach the (11) bolts 8 x 30 (3 pes), (15) (13) bolt 8 x 16: 17-22 firlbs (2.3~3.0 kg-m) universal flange, (12) lock plate washer, (13) (20) bolt 10 x 28: 33-43 fi-lbs (4,5—6.0 ke-m) lock plate, and (14) bolt 8 x 16 as shown in the (21) bolt 8 x 25: 17-22 flbs (2.3-3.0 kgem) illustration. ©) Shims A & B: shim 72x 0.1 mm 7) Insert the (16) differential assembly into the shim 72x 0.3 mm (9) front axle case. 8) Use (17) shims A to adjust the pinion and {Front axe flange packing (L) (20) Bole 10428 ipes) \ (48) Front axie (U1 2) Bat booting 8305 \" Fea cxetp 25 \ (1) Spiral pinion shat \, S181 Front axle case < Front aile case cop / Nx Cireip 52 (37) Shims (7) O-ing G60 Front axle cae shim 0.1,0.2 (4) Bal bearing case 6308 (6 Oi seat Te30a88 Ovving P20 (13) Univers ttnge (42) Lock plate washer 113) Lock plate flange packing (R) (21) Bort 8x25. ~ ttt pee) (5) Front axe cate cap (20) Shims ) Front ax (8) 423apr t Decor awenby a6 9.1690 4. CENTER PIN ASSEMBLY 4.1 For 4.Wheel Drive (YM169D) 1) Press-fit two sets of (1) oil seal, SD22327 and (2) metal, 22x25x27 into (3) front axle case. 2) Insert (4) center pin through (5) front axle bracket and (3) front axle case. 3) Tighten (4) center pin to (3) front axle case with (6) hex-bot, M12x25, (2) Metai 22425427 T I (4) Center Bin tar Front ante cose ‘nou sel, 3022 327 C1" (s) oi sea, so22 327 (51 Front ale bracket (6) Hox bots 12325 aChapter 4 Tractor Assembly Chapter 4 Tractor Assembly vt 69-169 4-2 For 2-Wheel Drive (YM169) 1) Press-fit two pes. of (1) bush, 22x25x25 into (2) front axle. 2) Insert (3) center pin through (4) front axle bracket and (2) front axle. 3) Tighten (3) center pin to (2) front axle bracket with (5) hex-bolt, M12x25. (5) Hex bole 12428. (3) center ain — (4) Front axle bracket (1) Bush 22425425, 425Qhapter 4 Tractor Assembly YM169-169D 5. BRAKE DRUM ASSEMBLY 1) Attach the (2) “O" ring S 16 to the (1) brake cam shaft. Insert the (3) brake cover, and attach the (4) brake cam shaft ring 2) Attach the (6) brake shoe return spring to the (5) complete brake shoe. Attach the brake cam shaft (step 1) to the brake shoe (step 2). 3) Insert the (7) brake cover packing between the step 1 and step 2 parts. Attach the (8) rear axle housing, and secure it with the (9) nut 8. NOTES: 4a) Tightening torque for the (9) nut 8 9-12 ft lbs (0,130.17 kg m). b) There is no need t0 apply sealent to the (7) brake ‘cover packing. Spring washer 8 (9) ue Stud bolt 8x17 (3) Brake cover 18) Brake camehatt ring 12) o-nng s16 (1) Brake camahatt — (8) Rear ante mousing 426