Ford TW10 / TW20 / TW30 Tractor OEM Service & Repair Manual

FORD SHOP MANUAL MODELS8000—8600—8700—9000—9600—9700—TW-10—TW-20—TW-30 These Ford tractors are equipped with a six-cylinder diesel engine. The 9000 series, TW-20 and TW-30 modeis engines are equipped with a turbocharger and due to increased power output, severai components on these modeis have been strengthened in comparison to the 8000 series and TW-10 modeis. An eight-speed gear type transmission and disc type ciutch is standard on aii models. A Dual Power planetary gear assembly which provides under-drive ratios in ail transmission speeds is standard on TW-30 modeis and avaiiabie for ail other modeis. identification numbers pertaining to Modeis 8000, 8600, 9000 and 9600 are iocated on a piate inside the tool box cover. Numbers pertaining to Modeis 8700 and 9700 are located on a piate mounted on the underside of the radiator filier cap access door. Numbers pertaining to Models TW-10 and TW-20 are on a piate located above the right front corner of the radiator and are accessible after removing the right front grill panel. Numbers pertaining to Modei TW-30 are on a plate iocated between the radiator and front fuel tani<; they are accessibie by siiding the right front griii panei forward. INDEX (By Starting Paragraph) BRAKES Adjustment .207,210 Discs, Renew 211 Fluid and Bleeding 208,210A Master Cylinder 209 Power Brake Valve 210B Wheel Cylinders 211 CAB. .265 CLUTCH, ENGINE Overhaul 165 Pedal (Free Play) Adjustment 160,161 Remove & Reinstall 164 CLUTCH, POWER TAKE-OFF 212 COOLING SYSTEM Engine Oil Cooler 155 Fan Assembly 156 Pressure Cap 151 Radiator 152 Thermostat 151 Water Pump I53 DIESEL FUEL SYSTEM Bleeding 114A, 115A Filters .114^ I I 5 Fuel Injectir Pump 125 Injectors 116 Troubleshooting 105 DIFFERENTIAL Differential Lock 198 Overhaul 201 Remove & Reinstall 199 DUAL POWER Control Valve I73 Linkage Adjustment 169 Overhaul 171 Remove & Reinstall 170 ELECTRICAL SYSTEM Alternator 158 Generator 157 Regulator, Alternator 158 Regulator, Generator 157 Starting Motor 159 Wiring Diagrams See Figs. 128,130,132 ENGINE Assembly, R&R 76 Cam Followers 83 Camshaft 91 Connecting Rod Bearings 97 Crankshaft and Bearings 98 Crankshaft Oil Seals 99 Cylinder Head 78 Cylinders 94 Flywheel, R&R lOl Main Bearings 98 Oil Cooler 155 Oil Pan 102 Oil Pump 103,104 Pistons 94 Piston Pins 96 Piston Rings 93 Piston & Rod Removal 92 Rocker Arms 85 Tappets .83 Timing Gear Cover 86 Timing Gears 87 Valve Adjustment 84 Valve Guides and Seats 80 Valve Springs 81 Valve Stem Seals 80 FINAL DRIVE GEARS 206

INDEX CONT. FRONT AXLE [Except Front Wheel Drive] Axle Main (Center) Member 3.31 Front Support (Pedestal) 6.33 Pivot Pins .3,31 Steering Spindles 2,30 Tie Rods And Toe-in 4, 32 FRONT WHEEL DRIVE Axle Main (Center) Member 45 Axle Shafts 49 Differential And Bevel Gears 52 Front Support 56 Pivot Pins 45 Steering Knuckles 50 Tie Rods And Toe-in 45A Transfer Box 59 Wheel Hub And Planetary Carrier 46 HYDRAULIC LIFT SYSTEM Adjustments 230 Filters 227 Flow Control Valve 243 Fluid 226 Lift Cover Assembly, R&R 245 Lift Cylinder 252 Lift Shaft (Rockshaft) 253 Linkage 254,257 Pressure Relief Valve, Overhaul 241, 242 Pump 233 Relief Pressure, Adjust 229 Remote Control Valves 258 Torsion Bar 257 Troubleshooting 228 INTERCOOLER Fan 143 Heat Exchanger 147 LOW PRESSURE OIL SYSTEM Pump Regulator Valve POWER STEERING Bleed System 7,34 Pump 11.36 Reservoir "^t 34 Steering (Hydramotor) Gear Unit 13 Steering (Ross) Gear Unit 19 Steering Motor 22,38 Troubleshooting ^ POWER TAKE-OFF Adjust Control Linkage 215 Clutch 220,221 Control Valve 220,221 OutputShaft 219 Pressure Test, Pto System 213 Reduction Gears 217 Troubleshooting 212 REAR AXLE Axle Housings 204 Bearing Adjustment — 205 Shaft, Remove & Reinstall 205 TRANSMISSION Assembly, Remove & Reinstall 187 Overhaul 1^1 Shifter Mechanism 189,190 TRANSMISSION HANDBRAKE 196 TURBOCHARGER Overhaul 138,140 Remove & Reinstall 137 CONDENSED SERVICE DATA 8000 GENERAL 8600,8700 Torque Recommendations Engine make Own No. of Cylinders 6 Bore, Inches 4.4 troke. Inches 4.4 Displacement, Cubic Inches 401 Compression Ratio 16.5:1 Pistons Removed From Above Main Bearings, Number of 7 Cylinder Sleeves None Generator Make Own Alternator Make tarter Make Own Turbocharger Make Injection Pump Make Simms Forward Speeds 8 With Dual Power 16 Reverse Speeds 2 With Dual Power 4 9000 9600,9700 Own 6 4.4 4.4 401 16.5:1 Above 7 None Own Own Simms 8 16 2 4 TW-10 TW-20 -See End of Shop Manual Own . Own 6 6 4.4 4.4 4.4 4.4 401 401 16.3:1 15.6:1 Above Above 7 :. 7 None None -Motorola- Own -See Paragraph 134- Minimec S 16 2 4 Own Minimec 8 16 2 4 TW-30 Own 6 4.4 4.4 401 15.6:1 Above 7 None Own Minimec

Paragraph 1 FORD CONDENSED SERVICE DATA CONT. 8000, 9000, TF?^-^ 8600,8700 9600,9700 TW-10 TW-20. TW-30 Firing Order 1-5-3-6-2-4 Compression, Gage Lbs. at Cranking Speed of 200 Rpm 380 480 380-480 300-400 275-375 Maximum Allowable Variation Between Cylinders, Psi 20 20 20 20 Valve Tappet Gap, Intake, Hot 0.014-0 016 inch — Valve Tappet Gap, Exhaust, 0.017-0.019 inch Engine Low Idle Rpm .: 700-800 700-800 700-800 700-800 Engme High Idle Rpm 2530-2580 2420-2470 2530-2580 2420-2470 Engine Rpm at Rated Load 2300 2200 2300 2300 Engine Rpm for 540 Pto Rpm 1900 *1900 1873 •1873 Engine Rpm for 1000 Pto Rpm 1935 1935 1918 1918 Injection Timing 23** BTDC — Battery Terminal Grounded p^g- •540 rpm pto shaft not available on 9000, TW 30 and some 9600 models. SIZES - CAPACITIES - CLEARANCES [INCHES] Crankshaft Journal Diameter See Paragraph 98 Crankpin Diameter _ See Paragraph 9 7 - Oamsnait Journal Diameter 2.3895-2.3905 Piston Pin Diameter 1.4997-1.5000 1.6246-1.6251 * 1.4997-1.5000 1.6246-1.6251 Valve Stem Diameter, Intake 0.3711-0.3718 Valve Stem Diameter, Exhaust — 0.3701-0.3708 - —^ Main Bearing Running Clearance ^ 0.002-0.0045 ~ Rod Bearing Running Clearance, Aluminum Bearings 0.0025-0.0046 Copper Lead Bearings 0.0017-0 0038 Camshaft Bearing Running Clearance 0.001-0.003 ^ Crankshaft End Play — 0.004-0 008 Camshaft End Play 0 001-0 007 — Piston Skirt Clearance See Paragraph 95 ^ Cooling System, Quarts 18 19 20 20 Crankcase, Quarts, Without Filter Change 10 12 18 m With FuU Flow Filter ^^ Change Only 12 14 20 M With Both Filters Changed 13 (8000 only) Rear Axle & Hydraulic Systems, ~ See Paragraph 197 43 43 58 **100 Power Steering System, Quarts 4.2 4 2 3 o q Q **TW-20 fuel capacity is 58 gallons. ' * FRONT SYSTEM AND STEERING MODELS 8000—8600—9000—9600 WIDE ADJUSTABLE are interchangeable between row crop follows: Straighten tabs of locking plates FRONT AXLE and all purpose types. Refer to Figs. 2 and unbolt center steering arm (13—Fig. „ , , , . , and 3 for center steering arm and tie rod 1) from steering motor shaft. Support Exploded view of row crop axle is installation. front end of tractor, unbolt front pivot shown m Fig. 1; all purpose type is pin support (21) from front support and similar except center (mam) member is 1. R&R FRONT AXLE ASSEMBLY, roll axle assembly forward. Unbolt and reversed. All parts except center steer- To remove either the row crop or all remove rear pivot pin support (16). mg arm (13) and inner tie rod ends (12) purpose type front axle, proceed as Reinstall front axle by reversing

SHOP MANUAL removal procedure, making sure a thrust washer (17) is placed on each pivot pin. Tighten pivot pin support and center steering arm cap screws to a torque of 180-220 ft.-lbs., then bend locking plates against steering arm cap screw heads. 2. SPINDLE BUSHINGS. To renew spindle bushings, support front of tractor and remove front wheels. Remove steering arm clamp bolts on models so equipped, pull arms from spindles and remove Woodruff keys (8—Fig. 1). On models equipped with spindles having splined end is shown in F'ig. 1, remove retaining nut (24) and pull steering arm from spindle. Withdraw spindles down- ward out of axle extensions. Remove seals (7) and thrust bearing (3). Remove thrust bearing spacers (2) if worn or damaged. Drive bushings from axle extensions and install new bushings using piloted drift or driver; bushings are pre- sized and should not require reaming if carefully installed. Be sure grease holes are aligned. Pack thrust bearings with grease. NOTE: Upper ends of early spindles with a key were 1^^ inches in diameter whereas late spindles with a key are approximately 1-5/8 inches. Only the large diameter spindle is available. If renewing small spindle, a itew large diameter steering arm must aiso be installed. Be sure correct size splndie seal is installed. Tighten steering arm clamp bolts on models equipped with keyed spindles to a torque of 135-165 ft.-ibs. On models with splined spindles, tighten retaining nuts (24—Fig. 1) to a torque of 200-250 ft.-lbs. Stake spindle threads to nut. 3. AXLE CENTER MEMBER, PIV- OT PINS AND BUSHINGS. To remove axle center member (20—Fig. 1), support front of tractor, remove clamp bolts from tie rods and unbolt axle extensions from center member. Withdraw axle extensions with spindles and wheels from center member and tie rod sleeves. Unbolt and remove center steering arm with tie rods. Support center member and unbolt front pivot pin support. Move center member and front pivot forward until clear of rear pivot pin and lower to floor. Unbolt and remove rear pivot pin and support. Pivot pins are integral parts of pivot pin supports; renew the pin and sup- Paragraphs 2-4 port assembly if pin is excessively worn. Renew bushings (18) in center member if member is otherwise serviceable; bushings are pre-sized and should not require reaming if carefully installed. Be sure grease holes are aligned and install plug (19) in bore through axle tube. Renew thrust washers (17) if worn. Reinstall by reversing removal procedure. Tighten pivot pin support and center steering arm cap screws to a torque of 180-220 ft.-lbs., then bend locking plates against steering arm cap screw heads. Tighten tie rod clamp bolts to a torque of 25-35 ft.-lbs. and check toe-in as outlined in paragraph 4. 4. TIE RODS AND TOE-IN. Tie rod ends are of the non-adjustable automo- tive type and procedure for renewing same is evident. Tighten clamp bolts on outer tie rod ends to a torque of 25-35 ft.-lbs. and tighten jam nut at inner end of tie rods to a torque of 100-125 ft.-lbs. Toe-in on both row crop and all purpose models should be V4- to V2-inch. Position center steering arm at center line of tractor as shown in Fig. 2 or Fig. 3 before checking toe-in at spindle height. If toe-in is not correct, remove 1. &1A. Spindle, R.H. 2. Thrust spacer 3. Thrust bearing 4. Lower bushing 5. Axle extension, R.H. 3. Upper bushing 7. Seal 8. Woodruff key 9. & 9A. Steering arm 10. Tie rod ends, outer 11. Tie rod tube 12. Tie rod ends, inner 13. Steering arm, center 14. Dust seals 15. Steering arm, L.H. 16. Rear pivot pin & support 17. Thrust washers 18. Pivot pin bushings 19. Plug 20. Axle center member 21. Front pivot pin & support 22. Axle extension, L.H. 23. Spindle, L.H. 24. Nut Fig. 2—When checking toe-in on row crop wide adjustable axle, be sure steering arm is centered as shown. View is from top. When installing center steering arm, be sure steering motor is centered and instaii arm as shown. iPtONT Fig. 1—Expioded view of row crop type wide adjustabie front axle. All purpose type front axle is simitar except that center member (20) is reversed to provide shorter wheeibase. Note that iater modeis are equipped with spindles (lA) and steering arms are retained by a nut as shown in inset. All parts except center steering arm {13) and inner tie-rod ends {12) are interchangeable between row crop and aii purpose types. Refer to Figs, 2 and 3 for center steering arm views. Fig. 3—View showing position of aii purpose type center steering arm for checking toe-in. Note that center arm (6) and tie rod inner ends are different than those used on row crop front end. View is from top.

Paragraphs 5-6 clamp bolts and loosen jam nuts on both tie rods, then turn each tie rod sleeve an equal amount as necessary. Refer to preceding paragraph for tightening torques. TRICYCLE FRONT SPINDLE 5. The dual wheel tricycle spindle is bolted directly to the power steering motor shaft; procedure for removing and installing spindle is obvious. Tighten spindle to steering motor shaft cap screws to a torque of 209-231 ft.-lbs. Spindle can be installed on steering motor shaft in one position only due to offset bolt holes. FRONT SUPPORT (PEDESTAL) 6. To remove front support, first 10 remove steering motor assembly as outlined in paragraph 22. Remove wide front axle assembly as outlined in paragraph 1. Unbolt and remove side plates from front support and transmission. Attach hoist to front support, then unbolt front support from engine cylinder block and oil pan; be careful not to lose shims on the two oil pan bolts and label shims for reinstallation, if same pedestal, oil pan and cylinder block are to be reinstalled. If front support, oil pan, and/or engine cylinder block have been renewed, it will be necessary to select shim thickness for installing front support as follows: Install the three bolts and one cap screw retaining front support to cylinder block and tighten to a torque of 180-220 ft.-lbs. Install the two cap screws retaining front support 12 Fig. 4—View showing hydrostatic power steering system used on 8000 and 9000 modeis and early 8600 and 9600 models. Note that tube {9) from ieft end of steering motor (8) is connected to iower port on front side of Hydramotor steering unit {11) and is connected by iong fitting to offset connecting nuts. Pressure tube (5) from pump is connected to ieft side port of Hydramotor unit by eibow {12); eibow {13) is fitted in rear port of Hydramotor unit and con- nects to return tube {14) to reservoir. Refer to Fig, 5 for iater system. 1. Pump assy. 2. "0" rings 3. Pump inlet tube 4. By pass tube 5. Pressure tube 6. Reservoir assy. 7. Return tube 8. Steering motor 9. Left cylinder tube 10. Right cylinder tube 11. Hydramotor steering unit 12. Elbow connector 13. Elbow connector 14. Return tube Fig. 5—8600—9600 hydrostatic power steering system with integrai hydrauiic pump and reservoir. Refer to Fig. 4 for identification of components. Steering motor {11) is pressurized from tube (5) fo iower port. Upper port returns unused fluid through tube (3) to reservoir (6). Tubes (9) and {10) are routed to front steering motor {8) from side ports. FORD to oil pan, tighten them to a torque of 180-220 ft.-lbs., then measure gap between front support and oil pan at the two bolting points using a feeler gage. Remove the two front axle support to oil pan cap screws, then reinstall with shims equal to measured gap and tighten cap screws to a torque of 270-330 ft.-lbs. Shims are available in thicknesses of 0.015, 0.018, 0.021, 0.024 and 0.027 inch. If front support is being reinstalled with same engine cylinder block and oil pan, reinstall shims as removed on the two front support to oil pan cap screws. Tighten the front support to cylinder block bolts and cap screws to a torque of 180-220 ft.-lbs., then tighten the two front support to oil pan cap screws to a torque of 270-330 ft.-lbs. HYDROSTATIC POWER STEERING SYSTEM CAUTION: The maintenance of abso- iute cleanliness is necessary when servicing the hydrostatic power steering Fig. 6—Exploded view of power steering system reservoir used on 8000 and 9000 modeis and early 8600 and 9600 modeis. Oil level switch {10) is connected to warning iight on instrument panel. Fitter element (8) and oil in reservoir shouid be renewed after each 600 hours of use. 1. Dipstick & niter cap 2. Gasket 3. Acorn nut 4. Sealing washer 5. Cover 6. Gasket 7. Element retainer spring 8. Filter element 9. Reservoir 10. Warning light switch 11. Nut 12. Ferrule

SHOP MANUAL Paragraphs 7-9 system. Avoid use of shop towels or rags In wiping internal parts as any lint can cause malfunction of the system. All 8000 and 9000 models and early 8600 and 9600 models were equipped with a remote power steering oil reservoir, a Saginaw Hydramotor power steering motor and a power steering pump with a flow control valve. The relief valve on pump is accessible from the outside. Late 8600 and 9600 models were equipped with a Ross power steering motor which uses a spool to control flow. Steering pumps on these models have the reservoir as an integral part of pump. It is necessary to remove this type pump from engine to change filter or relief pressure. 7. FLUID, BLEEDING AND SYS- TEM RESERVOIR. Recommended power steering fluid is Ford M-2C-41 oil. Maintain fluid level to full mark on dipstick. A low oil level switch assembly (10—Fig. 6) is used on models with remote fluid reservoir and is connected to a warning light on instrument panel. The light (located in Proof-Meter dial) should be on when starter switch is turned to "ON" position and go out when engine is started. If light remains on after engine is started, check for low oil level or malfunction in warning light system. After each 600 hours of use, renew filter element. On models with remote reservoir, remove all oil from reservoir with suction gun, install new element and refill reservoir with new oil. On models with integral reservoir, remove pump from engine, drain reservoir, remove bolt (1—Fig. 8) and renew filter and "0" rings. On all models the power steering system is self-bleeding. When any unit has been removed or disconnected, refill reservoir, start engine and cycle system by turning steering wheel from lock to lock. System is fully bled when front wheels respond directly to steering wheel movement and oil stays at level mark. Check fluid level and add oil as required to maintain full reservoir when cycling system. 8. CHECKING SYSTEM PRES- SURE. On models with remote reservoir the power steering pump assembly incorporates a pressure relief valve and a flow control valve. System relief pressure should be 1450-1550 psi. On later models with integral pump and reservoir, pressure should be 1550-1650 psi. To check system relief pressure, disconnect fitting and remove elbow in pressure line (5—Fig. 4 or Fig. 5) and connect a 0-2000 psi gage to pump, using an "0" ring on fitting to pump. With the engine running, gage reading should be as stated above. On models with remote reservoir, if pressure is not as specified, remove the pressure relief valve cap (7—Fig. 7) and add or remove shims (6) as required. If adding shims under the pressure relief valve cap will ndt increase system pressure, clean flow control spool in pump. If pressure is still low remove and overhaul power steering pump as outlined in paragraph 11. CAUTION: When checking system reiief pressure, run engine only long enough to observe gage reading; pump may be damaged if engine is aiiowed to run for an excessive length of time. Fig, 7—Exploded view of power steering pump used with remote reservoir. Note position of flow control valve spring (4) and that small tip on vaive {3) Is towards spring. On 8600 and 9600 models, with pump and reservoir as an integral unit, if pressure is not as specified, pump must be removed from engine. Drain reservoir and refer to Fig. 8. Remove reservoir (2) and filter (3). Remove relief valve body (24), shims (25) and spring (26). Shims are available in 0.010, 0.015 and 0.060 inch thicknesses. Each shim will change the pressure by the following approximate values: 0.010 inch—70 psi, 0.015 inch—105 psi, 0.060 inch—420 psi. Tighten relief valve to 30-40 ft.-lbs. torque. 9. STEERING SYSTEM TROUBLE- SHOOTING [Models with remote reser- 12 Cap plug "O*^ring 12 13. 14. 15. 16. 17. 18. 19. 2. Oring 3. Flow control valve 4. Spring 5. Tubing seats 6. Shims 7. Cap plug 8. •t)*^ring 9. Spring 10. Pressure relief valve 11. Seal ring 12. Outlet elbow Cap plug "O*ring Rear cover "O"ring "O"ring Rear plate 19. Inner seal ring 20. Outer seal ring 21. Bearing block 22. Drive gear & shaft 23. Driven gear & shaft 24. Pump body 25. Dowel rings (2) 26. Bearing block 27. Outer seal ring 28. Inner seal ring Fig. 8—Exploded view of power steering pump with integrai reservoir used on iate 8600 and 9600 modeis. 1. Bolt 2. Reservoir 3. Filter 4. Gasket 5. Through bolt 6. Cover 7. "O^'ring 8. Seal ring 9. Bearing block 10. Driven gear 11. Follow gear 12. Woodruff key 13. Body 14. Outlet elbow 15. Ring dowel 16. Sealring 17. Sealring 18. Flange housing 19. Oil seal 20. Snap ring 21. "O"ring 22. Drive gear 23. Shaft nut 24. Valve body 25. Shim pack 26. Spring 29. Front cover 30. Seal 31. Snap ring 32. "O"ring 24 33. Drive gear 34. Tab washer 35. Nut 36. Woodruff key 27. Spring guide 28. Sial 29. Valve head 32 30. Valve seat 31. "Chng 32. Relief valve

Paragraphs 10-12 FORD voir). Refer to the following paragraphs for checking causes of steering system malfunction: HARD STEERING. Check column bearings and bearings in Hydramotor unit; renew if rough or damaged. Check ring, rotor and vanes for wear and renew the assembly if necessary. Check for sticking control valve spool or blocking spool in Hydramotor; clean valves or renew Hydramotor parts as required. EXCESSIVE WHEEL DRIFT. Check blocking spool spring and guide assembly and renew if spring is broken. Check for leakage past blocking valve; if excessive, renew valve body housing assembly. Check seals on steering cylinder pistons and renew pistons and/or cylinders as required. STEERING WHEEL TURNING UN- AIDED. Check the Hydramotor unit for sticking control valve spool, broken valve spool spring, actuator shaft binding or torque shaft (inside actuator shaft) broken. Clean spool and bore or renew valve body housing assembly as required. STEERING WHEEL SLIPPAGE. Hydramotor control valve spool scored (renew valve body housing assembly) or rotor seals leaking (renew seals). EXCESSIVE NOISE. Hydraulic lines vibrating against tractor frame or broken control valve spool spring; insulate lines from tractor or renew valve body housing assembly if spring is broken. ERRATIC MOVEMENT OF FRONT WHEELS. Check Hydramotor ring, rotor or vanes for scoring, wear or binding condition; renew the ring and rotor assembly if necessary. WILL NOT STEER IN EITHER DIRECTION. The manual steer check ball between pump return and pressure passages in Hydramotor unit may not be seating. Disassemble unit and clean passage with solvent and dry with compressed air. Renew pressure plate assembly if check ball cannot be made to seat. FRONT WHEELS JERK OR TURN WITHOUT MOVING STEERING WHEEL. Check for sticking rotor vanes, rotor springs out of place or broken, scored pressure plate, scored rotor ring, scored housing, ball check valves in pressure plate leaking, improper assembly causing gap between rotor components. Disassemble the Hydramotor unit, carefully clean and inspect all parts and renew components as necessary. 10. STEERING SYSTEM TROU- BLESHOOTING. (Models with integral pump and reservoir). Refer to the following paragraphs for checking causes of steering system malfunction: HARD STEERING. Check column bearings and bearings in steering motor; renew if rough or damaged. Check rotor and stator assembly for wear or damage and renew assembly if necessary. Check for leaks from damaged valve spool; renew steering motor if spool is damaged. Check for binding at all pivot points in steering; free up and lubricate as necessary. Check for jammed valve spool; if unable to free up, renew steering motor assembly. EXCESSIVE WHEEL DRIFT. Check for leakage past valve spool; if spool is worn or damaged, renew spool assembly. EXCESSIVE NOISE. Hydraulic lines vibrating against tractor frame. Insulate lines from tractor. ERRATIC WHEEL MOTION. Rotor vanes sticking or damaged. Check vanes, rotor and stator for free movement; renew if necessary. WHEELS JERK FROM STOP TO- STOP. Rotor vane springs jammed; check for proper seating of vane springs, renew complete assembly if damaged. 11. R&R AND OVERHAUL PUMP. (REMOTE RESERVOIR). Thoroughly clean pump, lines and surrounding area. Disconnect lines from pump and allow fluid to drain. Cap all openings to pre- vent dirt from entering pump or lines, then unbolt and remove pump assembly from engine front plate. When rein- stalling pump, use new sealing "0" ring and tighten retaining bolts to a torque of 23-30 ft.-lbs. Reconnect lines, fill and bleed system as in paragraph 7. Refer to exploded view of remote reservoir model pump in Fig. 7 and disassemble pump as follows: Scribe an assembly mark across pump covers and body. Straighten tab on washer (34) and remove nut (35). Pull drive gear (33) from pump shaft and remove key (36). Remove the four through-bolts and separate rear cover assembly (15), plate (18), body (24) and front cover (29). Remove bearing blocks (21 and 26) and gears (22 and 23) from pump as a unit. Remove caps (1, 7 and 13) from rear cover (15) and withdraw flow control valve (3), pressure relief valve (10) and related parts. Remove locating snap ring (31) and the oil seal (30) from front cover. Clean all parts in a suitable solvent, air dry, then lightly oil all machined surfaces. Inspect bearing blocks (21 and 26) for signs of seizure or scoring on face of journals. (When disassembling bearing block and gear unit, keep parts in relative position to facilitate reassem- bly). Light score marks on faces of bearing blocks can be removed by lapping bearing block on a surface plate using grade "0" emery paper and kerosene. Examine body for wear in gear running track. If track is worn deeper than 0.0025 inch on inlet side, body must be renewed. Examine pump for excessive wear or damage on journals, journal bores in bearing blocks or teeth. Runout across the gear face to gear tooth edge should not exceed 0.001 inch. If necessary, the gear journals may be lightly polished with grade "0" emery paper to remove wear marks. The gear faces may be polished by sandwiching grade "0" emery paper between gear and face of scrap bearing block, then rotating the gear. New gears are available in matched sets only. If flow control valve (3) or rear cover (15) are scored or damaged, they must be renewed as a matched set only. When reassembling pump, install all new seals, "0" rings and sealing rings. Insert new drive shaft oil seal (30) in front plate and install locating snap ring. Install flow control valve (3), spring (4) and plugs (1 and 13) with new "0" rings (2 and 14). Install pressure relief valve (10), spring (9) and plug (7), being sure that all shims (6) are in plug and using new "0" ring (8). Assemble pump gears to bearing blocks and insert the unit into pump body. Be sure the two bolt rings (hollow dowels) are in place in pump body, then position the front cover on body. Place the rear plate (18) at rear of body and install rear cover. Tighten the four cap screws (through-bolts) to a torque of 13-17 ft.-lbs. Install the pump drive gear key, drive gear, tab washer and nut. Tighten the nut to a torque of 55-60 ft.-lbs. and bend tab of washer against flat on nut. 12. R&R AND OVERHAUL INTE- GRAL RESERVOIR PUMP. For ex ploded view of parts used on models with integral pump and reservoir refer to Fig. 8. Clean pump and surrounding area and disconnect pump pressure and return lines. Remove the two cap screws securing pump to engine front cover and lift off pump and reservoir as a unit. Drain the reservoir and remove through-bolt (1), reservoir (2) and filter (3). Relief valve cartridge (32) can now be removed if service is indicated. For ac- 8

SHOP MAMUAL Paragraphs 13-16 cess to shims (25) grasp seat (30) lightly in a protected vise and unscrew body (24). Shims (25) are available in thicknesses of 0.010, 0.015 and 0.060 inch. Starting with the removed shim pack substitute shims, thus varying total pack thickness, to adjust opening pressure. Available shims permit thickness adjustment in increments of 0.005 inch and each 0.005 inch in shim pack thickness will change opening pressure about 35 psi. If parts are renewed, the correct thickness can only be determined by trial and error, using the removed shim pack as a guide. To disassemble the pump, bend back tab washer and remove shaft nut (23), drive gear (22) and key (12). Mark or note relative positions of flange housing (18), pump body (13) and cover (6); then remove pump through bolts (5). Keep parts in their proper relative position when disassembling pump unit. Pump gears (10 and 11) are available in a matched set only. Bearing blocks (9) are available separately but should be renewed in pairs if renewal is because of wear. Bearing blocks should also be renewed with gear set if any shaft or bore wear is evident. Examine body (13) for wear in gear running track. If track is worn deeper than 0.025 inch on inlet side, body must be renewed. Renew all "0" rings and seals. When reassembling the pump, tighten through bolts (5) to a torque of 25 ft.-lbs. and drive gear nut (23) and relief valve body (24) to a torque of 30-40 ft.-lbs. 13. SAGINAW HYDRAMOTOR STEERING UNIT. Refer to the following paragraphs 14 through 18 for information on removal, overhaul and installation of the Saginaw Hydramotor steering unit which is used on 8000 and 9000 models and early 8600 and 9600 models. If parts are not available for repair of Hydramotor unit, a conversion kit is available to install the later Ross unit on early tractors. Refer to paragraph 9 for troubleshooting information. For the Ross unit used on 8600 and 9600 models, refer to paragraphs 19, 20 and 21. 14. R&R HYDRAMOTOR UNIT. To remove Hydramotor, first remove hood top, right and left side panels, then proceed as follows: Remove cap (1—Fig. 9) from adjuster knob (4) and remove nut (2) and washer (3). Knob can then be removed from locking rod in shaft (11), then remove steering wheel (7) and shaft (8) as an assembly. Disconnect the four tubes from Hydramotor unit, then cap or plug all openings. Loosen both jam nuts (24) and unscrew the pivot studs (23) from support (21). Then remove steering unit from below the instrument panel. NOTE: Remove intake manifold air tube if necessary for ciearance. To reinstall, position unit in support with tilt quadrant engaged in lock plunger and turn pivot studs in to support unit. Reconnect the four tubes and reinstall steering wheel and adjuster knob. With steering shaft shortened to fuU extent and steering wheel in lowered position, attach pull scale to steering wheel rim and release quadrant latch. Tighten pivot studs until a pull of 18-22 pounds will lift steering wheel from lowered position, then tighten jam nuts to a torque of 180-220 ft.-lbs. and recheck pivot stud adjustment. NOTE: Do not attempt to position steering wheei on shaft as slippage in unit will not allow wheei to remain in any relative position to front wheel movement. R&R STEERING COLUMN JACKET AND SHAFT ASSEMBLIES (Hydramotor Models). With Hydra- motor unit removed as outlined in paragraph 14, proceed as follows: Loosen clamp (15—Fig. 9) and pull column jacket assembly (10) from control valve housing (16). Unscrew the hex nut (14) until it nearly contacts control valve housing. Nut was staked when assem- bled and will turn hard. Drive the tapered collar (13) towards nut until collar is loose, then turn collar untO hole in collar is over locking ball hole in outer shaft (11) and shake the ball (12) out of hole. The outer shaft, tapered collar and hex nut can then be removed from the Hydramotor actuator shaft. Reassemble the unit before rein- stalling on actuator shaft as follows: In- stall tapered ring (13) on outer shaft (11), with large I.D. first. Install a new nut (14) just far enough to catch one or two threads of outer shaft. Engage splines of outer shaft on splines of actuator shaft. Align hole in tapered ring, hole in outer shaft and groove around the actuator shaft, then drop locking ball in hole and groove and turn tapered collar V4-turn. Tighten the hex nut to a torque of 40-50 ft.-lbs. and stake nut into slot in outer shaft as shown in Fig. 11. 16. R&R BLOCKING SPOOL (RE- ACTION) VALVE (Hydramotor Mod- els). The blocking spool valve and related parts can be removed and reinstalled after the Hydramotor steering unit has been removed as outlined in paragraph 14. Refer to Fig. 12 and proceed as follows: Fig. 9—View showing adjustable length steering shaft and variable position Hydramotor steering unit bracket on 8000 and 9000 models and early 8600 and 9600 models. Lock plunger {22) engages one of eight notches in quadrant (f 7) to hold steering wheel at desired tiit position. Ad- justing knob (4) tightens tapered end of steering shaft {8) against tapered end of tower shaft to lock steering wheei at desired height. 1. Cap 2. Nut 3. Flat washer 4. Adjusting knob 5. Flat washer 6. Nut 7. Steering wheel & outer tube 8. Steering wheel shaft 9. Shaft scraper & seal 10. Steering column jacket 11. Hydramotor outer shaft 12. Steel ball (11/64-inch) 13. Taper ring 14. Nut 15. Clamp 16. Hydramotor unit 17. Tilt quadrant 18. Spring 19. Tilt knob 20. Tilt pivot 21. Support 22. Tilt lock plunger 23. Pivot studs 24. Jam nut

Ford TW10 / TW20 / TW30 Tractor OEM Service & Repair Manual

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