730, 830, 930 Comfort King Volume 1 of 2

Transcription

1 J.I. Case Service Manual 730, 830, 930 Comfort King Volume 1 of 2 Service Manual THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF J.I. CASE OR IT S SUCCESSORS. J.I. CASE AND IT S SUCCESSORS ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL. TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS. CA-S CK

2 730,830,930 Se.ries Tractors Service Manual Rae

3 o.criplion Specifications, General.... (engine wear limits, torque specifications) TA.LB Ofl CONTBNTS 930 CK DIIIAIIIT-O-MATIC TRACTORS Group Section Page I.,... CC. CC-l thru CC-8 Specifications, Electrical' I... Form F-l thru F-26 Wiring Diagrams.... I..... Form Supplement # 1 Diesel Engine Cylinder Head Assembly..... I K... K-l thru K- 16 (rocker arms, manifolds, valve) Spark Ignition Cylinder Head Assembly... I... L... L-l thru L-13 (rocker arms~ manifolds, valves) Assemblies in Engine Block II'.... M'... M-l thru M-48 (oil pump, pistons, connecting rod, sleeves, rings, crankshaft, camshaft, lifters, injection pump drive) Water Pump'... II M Supp #1.. M-125 thru M-132 Spark Ignition Governor' II. M Supp #2.. M-l thru M-8 Checking Spark Ign. Governor Linkage..... II & III. Form Gasoline Carburetor III NN NN-l thrunn-16 Gasoline Fuel Shut-Off (Electric) III. 4N 4N-l thru 4N-3 Gasoline Fuel Pump (Electric)'... III... 3N... 3N-l thru 3N-3 LP Gas Carburetor & Regulator'... III' N'... 5N-l thru 5:t\-8 Diesel Fuel Injectors... III... I I-I thru 1-25 Case Diesel Powrcel -III'.. -. I. Diesel Fuel Injection Pump II' I. (adjustments timing) I-36thru thru 1-43 Hydraulic Cylinders' IV'... - A & Supp #1.. A-I thru A-8 A-I thru A-4 Hydraulic Pump' IV-... DD. DD-l thru DD-7 Auxiliary Hydraulic Valve'.... I\T... D.... D-l thru D-ll (pressure relief check, relief valve) Draft-O-Matic System'... IV'... R... R-l thru R-31 Steering System... V thru 0-60 (mechanical, hydraulic, toein, gear hsg., cylinders) Rac.Farm Table af Cantents ::--

4 TABLE Opr CONTI!NTS (CONTINUI!D) 930 CK DRAPT-Q-MATIC TRACTORS o.aiptlon GrouP Sedian,... Powe r Stee ring Pump V p P-1 thru P-23 (pressure check, relief valve) Transmission VI.... S S-l thru S-60 (brake linings I speedometer drive, and differential) Traction Clutch' VI S S-1 thru 4S-8 PTO Clutch' VI'.... 3S S-1 thru 3S-15

5 A251 AND A284 ENGINE SPECIFICATIONS Gasoline and LP Gas Type CASE 4 Cylinder, 4 Stroke Cycle, Valve In-Head Engine. Cylinder Heads Multiple Cylinder Heads can be removed individually for Servicing (2 Cylinders per Head). FiringOrder Bore A Inches A /4 Incbes Stroke Inches Piston Displacement A Cubic Inches A CubiC InCheS Compression Ratio A251(Gasoline) to 1 (LP Gas) to 1 A284(Gasoline) to 1 (LP Gas) to 1 Maximum Compression at Cranking Speed (150 RPM) Engine Warmed up to Operating Temperature PSIat Sea Level Allowable Variance Between Cylinders Pounds Pressure Oil Filter, Crankcase Replaceable Full Flow Element Type Ignition Distributor CYLINDER SLEEVES Type Replaceable Wet Type; Two Rubber O-ring Se~s Carried on each sleeve. Inside Diameter of Sleeve Bore A to Incbes, Replace Sleeve when Inside Diameter BelowTop Ring Ridge Exceeds Inches. A to Inches. Replace Sleeve When Inside Diameter Below Top Ring Ridge Exceeds Piston Clearance in Sleeve (At Skirt) to.0045 Inches PISTON AND PISTON PINS Piston Material Aluminum Piston Weight (Less Pin) A to Pounds A Pounds Diameter of Piston at Top A to Inches A to Inches Diameter of Piston at Top of Skirt (Measured Immediately Below Oil Ring, Across thrust Faces) A '1.996 to Inches A to Inches Piston Pins Full Floating Type;Held in Position with Snap Rings in Piston;Replaceable Bronze Bushing in Connecting Rods. Piston Pin Length A A to Inches to Inches Piston Pin Diameter A to Incbes A to Inches Piston Pin Fit in Piston A to.0003 Inch A _.0001 to.0004 Inch Piston Pin Fit in Connecting Rod Bushing A to.0011 Inch A to.0011 Inch PISTON RINGS Rings Per Piston (3 Compression and 1 Oil) Compression Rings (Top 3) C-5 1st(Top)Ring Chromium Plated;Relief Indicates Top Side 2nd and 3rd Rings Tapered Face, TopMarked Width of Rings (All 3) to.0935 Inch Ring End Gap(All 3) When Compressed in Inch Cylinder A to.023 Inch Ring End Gap (All 3 ) When Compressed in Incb Cylinder A to.025 Inch Side Clearance in Groove of 1st(top)Ring to.0040 Inch Side Clearance in Groove of 2nd and 3rd Ring A to.0040 Incb A to.0035 Inch Oil Ring To install Replacement Ring, Follow Instructions Packed with Rings. Width of Riog(Both Original and Replacement) A to.2490 Inch A to.2590 Inch Ring End Gap When Compressed in 4.00 Inch Cylinder A to.0035 Ring End Gap When Compressed in Inch Cylinder A to.055 Side Clearance in Groove (Original EqUipment) to.0085 Inch (Replacement Ring) to.0074 Inch CONNECTING RODS Piston Pin Bushing Replacement BronzeBushing, Ream in place. Use to Reamer. Piston Pin Hole Diameter in Rod(Without Bushing) to Inches Inside Diameter of Piston Pin Bushing in Rod to Inches; Install New Bushing if Inside Diameter Exceeds COnnecting Rod Bearing Replaceable, Precision steel Backed, Copper Lead Alloy Liners. Connecting Rod Capscrews Self Locking Type, No Lock Wire Required-May be Used More Than Once. Connecting Rod Length(Center to Center Between Pin Hole and Bearing Journal Hole to Inches Bearing Liner Width Inch Diameter of Crankshaft Journal Hole in Rod(Without Liner) to Inches Inside Diameter of Bearing Liner(standard Liner in Place in Rod and Capscrews Tight) to Inches Diameter of Crankshaft Rod Journal to Inches Clearance Between Rod Bearing and Crankshaft Journal to.0036 Inch;Install New Bearing Liners When Clearance Exceeds.006 Inch. Undersize Bearing Liners Available for Service ,.010,.020,.030 Inch Allowable Connecting Rod Bearing End Play to.012 Inch CRANKSHAFT AND MAIN BEARINGS Crankshaft Balanced Drilled to Provide Pressure Lubrication to Main and Connecting Rod Bearings. Type Main Bearings Replaceable Precision, Steel Backed, Copper Lead Alloy Liners Bearing Capscrews Self Locking Type, No Lock Wires Required - May Be Used More Than Once Bearing Taking End Thrust --- Center(Two Replaceable Bronze Thrust Washers).

6 BATTERY TABLE OF CONTENTS F-3 thruf-5 Visual Inspection... F-3 Specific Gravity Check F-3 and F-4 Individual Battery Cell Check... F-4 Cranking Voltage Test... F-5 Battery Bench Load Test F-5 REGULATORS... F-6 thru F Introduction F-6 Specifications... F-7 Test Hook Ups.... F-8 GENERATORS F-9 thru F-l1 Introduction... F-9 Specifications and Belt Adjustment... F-I0 Out-Put Check Hook-Up... F-l1 CRANKING MOTOR SWITCHES AND SOL'ENOIDS Specifications Test Hook Up ". F-12 and F-13 F-13 F-13 CRANKING MOTORS. Specifications Test Hook Up. F-14 F-14 F-14 IGNITION SYST EMS... F-15 thru F-22 Distributors.... F-15 thru F-21 Ignition Coils.... F-21 Coil Resistors... F-22 SPARK PLUGS... "... F-23 and F-26 F-2

7 BATTERY Visual Inspection. Specific Gravity Check Individual Battery Cell Check Cranking Voltage Test.... Battery Bench Load Test.... F-3 thruf F-3 F-3 and F-4. F-4 F-5 F-5 REGULATORS F-6 thru F-8 Introduction F-6 Specifications.., Test Hook Ups. F-8 F-7 GENERATORS Introduction Specifications and Belt Adjustment Out-Put Check Hook-Up.... F-9 thru F-ll F-9 F-I0 F-ll CRANKING MOTOR SWITCHES AND SOLENOIDS Specifications Test Hook Up F-12 and F-13 F-13 F-13 CRANKING MOTORS. Specifications Test Hook Up F-14 F-14 F-14 IGNITION SYSTEMS Distributors Ignition Coils Coil Resistors SPARK PLUGS F-15 thru F-22 F-15 thru F-21 F-21 F-22 F-23 and F-26 F-2

8 CYLINDER HEAD AND COMPONENTS - Disassembly and Installation K-2 thru K-5 DECOMPRESSOR (If So Equipped) - Disassembly and Assembly K-6 ROCKER ARMS AND SHAFTS - Disassembly, Inspection and Assembly... K-8 CYLINDER HEAD AND VALVES - Disassembly and Assembly.. EXHAUST VALVE ROTATORS K-IO K-IO VAL VES, GUIDES AND SPRINGS - Inspection K-12 INTAKE AND EXHAUST VALVES - Refacing. K-14 INTAKE AND EXHAUST VALVE SEATS - Grinding.... K-15 LOCATING TOP DEAD CENTER AND TAPPET ADJUSTMENT K-16 CYLINDER HEAD AND COMPONENTS (Refer to Figure K-1) Removal Steam clean the engine completely before doing any disassembly or service work. Drain cooling system. Remove the intake, exhaust and water manifolds. Remove the rocker arm covers. Disconnect and remove the decompressor if so equipped, Page K-6. Remove the rocker arm assemblies and tag them for proper installation. (Refer to Page K-8. the injectors and cap them. Disconnect the fuel leak-off tubes between each cylinder head and cap them. Remove the push rods and tag or store them in a holder or rack so they can be installed in their same locations. Remove the cylinder head bolts or nuts and lift the heads off the engine. Remove the head gaskets and discard them. Disconnect the high pressure fuel lines to Inspection and Installation Remove all carbon and clean all parts before installation. STANDARD HEAD GASKETS If you are installing the standard gasket, install the new gasket with new rubber seals. The gasket must be installed with either the copper side up or the side with the case part number up. Continued on Page K-5. FIRE RING HEAD GASKETS If you are installing the fire ring head gasket, inset B, cylinder sleeve protrusion must be checked to determine which fire ring to install. Only the standard fire ring is included in the valve grind gasket kit, however a thicker fire ring (.004") is available if the protrusion checks indicate a need for it. The thicker fire ring can be identified by a blue marking stripe. Refer to Pages K-4 and K-5 for the procedure to follow when installing the fire ring cylinder head gasket. K-2

9 ENGINE LUBRICATING SYSTEM.... Engine Lubricating System Diagrams. Oil Pan Removal... Oil Pan Installation. Oil Pump Removal Disassembly Inspection. Assembly.. Installation. Adjusting Oil Pump Pressure Relief Valve.... M-4 thru M-13 M-4 thru M-7; M-12 and M-13 M-8 M-8 M-8 M-8.M-IO.M-IO.M-IO.M-IO CHECKING COMPRESSION PRESSURE (Diesel)... M-14 CHECKING COMPRESSION PRESSURE (Spark Ignition)... M-15 PISTONS, CONNECTING RODS, CYLINDER SLEEVES Removal and Disassembly. Inspection Connecting Rods. Pistons.... Piston Pins.... Bearing Caps and Liners Cylinder Sleeves.... Piston Clearances... Assembly and Installation. Cylinder Sleeves... Piston Pin and Bushing Checking Ring End Gap Compression Rings... Oil Rings.... Pistons and Connecting Rods. M-16 thru M M-16 M-16 thru M-23.M M M M-18 M-19 thru M-2I M-22 and M-23 M-24 thru M-29.M-24.M-24.M-26.M-26.M-27.M-28 CRANKSHAFT, MAIN BEARINGS, FLYWHEEL. Removal and Disassembly. Inspection..... Crankshaft.... Main Bearings Assembly and Installation. Checking Flywheel Housing Alignment. M-30 thru M M-30 M-30 thru M M-30 M-32 and M-33 M-34 thru M M-36 M-2

10 (CONT'D) CAMSHAFT, BUSIDNGS AND PUSH ROD LIFTERS... Removal and Disassembly.... Inspection.... Assembly and Installation Checking Timing Gear Backlash. M-38 thru M-41 M-38 M-38 M-40 M-40 FUEL INJECTION PUMP DRIVE... Removal and Disassembly M-42 thru M-44 M-42 Inspection... M -42 Assembly and Installation.... M-44 CHECKING TIMING POINTER ACCURACY M-44 M-3

11 ENGINE LUBRICATING SYSTEM... M-I09 thru M-ll1 ENGINE COUNTER BALANCER... M-112 thru M-124 Introduction M-112 Oil Pump Screen Removal and Installation M-113 Oil Pump Cover Removal and Installation M-113 Adjusting Oil Pump Relief Valve Pressure M-115 Balancer Removal and Disassembly Inspection Of Oil Pump and Balancer M-116 thru M-117 M-118 thru M-119 Assembly Of The Balancer M-120 thru M-122 Installation Of The Balancer In The Engine M-123 Removal and Installation Of The Balancer Drive Gear On The CraIlkshaft M-124 WATER PUMP M-125 thru M-132 Removal Of The Water Pump From The Engine M-125 Water Pump Disassembly... M-126 thru M-127 Inspection Of The Water Pump... M-128 thru M-129 Assembly Of The Water Pump M-130 thru M-132 Installation Of The Water Pump On The Engine... M-132 M-I08

12 SPECIFICATIONS..... REMOVAL..... DISASSEMBLY..... INSPECTION. ASSEMBLY.. INST ALLATION M-2.M-4.M"':4.M-6.M-6.. M-6 SPECIFICATIONS Oil Pump Gear Type with Screen Normal Pump Pressure to 50 lbs. Drive Gear Thickness " Drive Gear Shaft Length " Driven Gear Thickness " Driven Gear Shaft Length " Radial Clearance " to.006" Gear To Cover Clearance " to.005" Oil Pump Gear to Crankshaft Gear Backlash " to.011" Relief Valve Spring Total Coils Wire Thickness " Minimum Inside Diameter " Compressed Height of 1.248" to 17.5 lbs. M-2

13 I. GASOLINE CARBURETOR N-3 thru N-12 Model Identification N-3 Specifications N-4 Principals of Operation N-6 thru N-10 Float System N-7 Idle System N-8 Power Fuel Feed System N-9 Choke System N-10 II. SERVICING THE CARBURETOR N-13 thru N-30 Disassembly of the Model TSX Carburetor N-13 Measuring the Carburetor Nozzles and Seats N-19 Assembly of the Model TSX Carburetor N- 21 N-2

14 INTRODUCTION NN-3 HOW IT WORKS NN-4 DISASSEMBL Y NN-6 INSPECTION NN-8 ASSEMBL Y NN-lO thru NN-13 CARBURETOR ADJUSTMENTS NN-14 NN-2

15 INTRODUCTION.... DISASSEMBLY-INSPECTION-ASSEMBLY OF THE REGULATOR.. DISASSEMBLY-INSPECTION-ASSEMBLY OF THE CARBURETOR. ADJUSTMENTS.... 5N-3 5N-4 5N-6 5N-8 SAFETY PRECAUTIONS FOR LPG ENGINES When properly handled, LPG fuel presents less opportunity for the occurrance of accidents than is true with gasoline and other fuels. The probability of an accident occurring with LPG fuel is very remote unless vapor is released within a building or confined area by a thoughtless person who has completely disregarded the normal precautions that should be observed when handling or storing any combustible fuel. Emptying LPG Tank The recommended method for emptying a tank which contains a substantial amount of liquid LPG is to burn the vapor instead of releasing it directly into the atmosphere. The burning of the vapor is accomplished by hooking a hose line 20 feet or longer to the filler valve of the tank. Place the end of the hose downwind from the tractor so that there will be no possibility of damage to the tractor. Prior to attaching the hose line to the filler valve of the tank, place some burning waste at the end of the hose so the escaping vapor will be ignited immediately. Burning the released vapor in this manner will eliminate any possibility of a dangerous accumulation of vapor forming in a low place. Filling LPG Tank. A. VAPOR SPACE IN TANK. The engine fuel tank should not be filled over 80% full with liquid LPG. The 20% vapor space remaining will take care of any normal expansion that would result from atmospheric temperature changes. After filling the LPG tank, the full level gauge determines the amount of liquid LPG in the tank. B. REFUEL THE TANK OUT-OF-DOORS. As a small amount of vapor is released when attaching or removing the filler and vapor hoses, the tank should always be refueled out-of-doors in an open area where the released vapor would be quickly dissipated. C. VAPOR RETURN HOSE. In addition to the filler hose, a vapor return hose should always be used when filling an LPG tank. The practice of using only a filler hose and then bleeding off vapor pressure from the tractor tank wastes fuel and could also be hazardous if the operator is careless. D. HANDLING FACILITIES. The main storage tank, filler pump and hose lines should all meet the government safety standards set up for use with LPG fuel. bautlljn WHEN FILLING THE TANK, CHECKING THE LIQUID LEVEL IN THE TANK OR WHEN CLEANING THE LIQUID FILTER, BE CAREFUL NOT TO COME INTO PROLONGED CONTACT WITH THE LIQUID SPRAY. THE TEMPERATURE OF THE LIQUID SPRAY IS EXTREMELY LOW AND COULD CAUSE FROST-BITE IF IT DffiECTLYCONTACTED BARE HANDS, ARMS OR OTHER PARTS OF THE HUMAN BODY. 5N-2

16 INTRODUCTION.... REGULATOR.... CARBURETOR - All Except Grove. CARBURETOR - Grove ADJUSTMENTS.... 6N-3 6N-4 6N-6 6N-8 6N-10 and 6N-ll SAFETY PRECAUTIONS FOR LPG ENGINES When properly handled, LPG fuel presents less opportunity for the occurrance of accidents than is true with gasoline and other fuels. The probability of an accident occurring with LPG fuel is very remote unless vapor is released within a building or confined area by a thoughtless person who has completely disregarded the normal precautions that should be observed when handling or storing any combustible fuel. EmptYing LPG Tank The recommended method for emptying a tank which contains a substantial amount of liquid LPG is to burn the vapor instead of releasing it directly into the atmosphere. The burning of the vapor is accomplished by hooking a hose line 20 feet or longer to the filler valve of the tank. Place the end of the hose downwind from the tractor so that there will be no possiblility of damage to the tractor. Prior to attaching the hose line to the filler valve of the tank, place some burning waste at the end of the hose so the escaping vapor will be ignited immediately. Burning the released vapor in this manner will eliminate any possibility of a dangerous accumulation of vapor forming in a low place. Filling LPG Tank A. VAPOR SPACE IN TANK. The engine fuel tank should not be filled over 80% full with liquid LPG. The 20% vapor space remaining will take care of any normal expansion that would result from atmospheric temperature changes. After filling the LPG tank, the full level gauge determines the amount of liquid LPG in the tank. B. REFUEL THE TANK OUT-OF-DOORS. As a small amount of vapor is released when attaching or removing the filler and vapor hoses, the tank should always be refueled out-of-doors in an open area where the released vapor would be quickly dissipated. C. VAPOR RETURN HOSE. In addition to the filler hose, a vapor return hose should always be used when filling an LPG tank. The practice of using only a filler hose and then bleeding off vapor pressure from the tractor tank wastes fuel and could also be hazardous if the operator is careless. D. HANDLING FACILITIES. The main storage tank, filler pump and hose lines should all meet the government safety standards set up for use with LPG fuel. bautidn WHEN FILLING THE TANK, CHE CKING THE LIQUID LEVEL IN THE TANK OR WHEN CLEANING THE LIQUID FILTER, BE CAREFUL NOT TO COME INTO PROLONGED CONTACT WITH THE LIQUID SPRAY. THE TEMPERATURE OF THE LIQUID SPRAY IS EXTREMELY LOW AND COULD CAUSE FROST-BITE IF IT DIRECTLY CONTACTED BARE HANDS, ARMS OR OTHER PARTS OF THE HUMAN BODY. 6N-2

17 FUEL INJECTORS , I 1-5 thru 1-25 Description and Operating Principles.. Diesel Tool Kits..... Checking Injector Operation on the Engine... Removing and Installing Inj ector Nozzle (Injector) Test Stand.... Test Stand Installation.... Test Oil Recommendations... Preparing Test Stand for Operation... Testing Injector.... Setting Injector Opening Pressure 1-5 and thru Disassembling, Cleaning, Checking and Reassembling Injector thru 1-25 CASE POWRCEL thru 1-32 General Description Servicing Powrcel thru 1-32 Removing and Installing Powrcel thru 1-29 Cleaning and Checking Powrcel. Installing Powrcel Body Locating Pin.1-30 thru ROBERT BOSCH MODEL PES MULTIPLE PLUNGER(EXTERNAL DRIVE) FUEL INJECTION PUMP General Description Removing, Timing and Replacing Fuel Injection Pump Adjusting the Governed Engine and Idle Speed thru thru

18 Section 4019 BREAK-AWAY COUPLINGS AND PORTABLE HYDRAULIC CYLINDERS TABLE OF CONTENTS Break-away couplings ASAE Standard Break-away Couplings " x 8" and 4" x 8" Hydraulic cylinders with mechanical stop " x 8" and 4" x 8" hydraulic cylinders with hydraulic and collar locking limit stop /4" x 8" and 4" x 8" hydraulic cylinders with hydraulic and clamp type locking limit stop Portable cylinder jack pad and base J I Case Rae A Tenneco Company PRINTED IN U.S.A.

19 HYDRAULIC PUMP (Reter to Figure 00-0 Removal 1. Remove the third point hitch turnbuckle (4). (1) and lower hitch mounting pad (2). 2. Remove the pressure line (3) from the pump assembly and high pressure filter 3. Remove the pump mountingcapscrews(5) and pump assembly (6). 1. Remove coupling roll pin (15) and coupling (16). 2. Remove the pump assembly capscrews (2 and 17) and end cover (3). 3. Remove the check ball spring (5), check ball (4), wear plate (9), backup gasket (8), protector gasket (7) and diaphragm seal (6) from the end cover (3). Figure DD-l Disassembly (Reter to Figure 00-2) (11) and "0" ring (12) from the pump body (13) NIJTE Mark the gears to insure proper installation during assembly of the pump. 5. Remove the pump body (13) from the pump adapter cover (14). 6. Using a suitable puller remove the oil 4. Remove the drive gear (10), driven gear seal (1) from the pump cover (3). Inspection With the hydraulic pump completely disassembled the component parts can easily be cleaned and inspected for wear, cracks and scratches. Any parts that are excessively worn or damaged must be replaced. Also, replace all oil seals, "0" rings, seals, gaskets, spring and ball. The gears must be carefully cleaned and inspected for grooves, score marks and burrs. Any burrs, score marks or grooves on the gear shaft ends may cause damage to the cover bearings. If one gear is found to be worn or damaged, both gears must be replaced. DD-4

20 INTRODUCTION... D-3 HOW IT WORKS... D-3 OIL FLOW.... D-4 and D-5 Neutral Position.... D-4 Cylinder Piston Extending.... D-5 Cylinder Piston Retracting D-6 CONTROL VALVE..... D-7 thru D-13 Removal D-7 Installation. D-7 Disassembly D-8, D-9 Inspection. D-IO, D-ll Assembly. D-12, D-13 TESTING PILOT OPERATED RELIEF VALVE WITH A HAND PUM~... D-14, D-15 Spring Specification Check the springs for the following specifications. Free No. of Spring Height Length Coils O.D. of Lbs. Pressure Outlet Ball check spring (43) 1.125"* 6.500".938" * Return Ball check spring (22) (31) 2.25" 10 Work in 625".625" bore Relief Valve spring w / a thermal (41) ** Thermal relief valve spring (33) 1.11" ".97" Spool plunger spring (47) Optional Optional.572" 1.188" Pilot valve piston spring (69) 1.00" 10 Work in.88".470" bore Pilot Relief valve spring (73).717" 4 Work in.605".771" bore *Spring check made while measuring over 5/8" dia. ball on top of spring. **Spring check made while measuring over 1/4" dia. ball on top of spring. Spring check made while measuring over 1/2" dia. ball on top of small end of spring. 35 to to to to to to to 120 D-2

21 INTRODUCTION...,... R-3 GENERAL... R-4 OPERATION OF DRAFT-O-MATIC LOAD SENSING LINKAGE... R-7 and R-9 OIL FLOW DIAGRAMS... R-IO thru R-17 Holding Position R-IO Lifting Position R-12 Lowering Position... R-14 Floating Position... R-16 LOWER DRAFT-O-MATIC COMPONENTS Removal and Disassembly R-18 Irlspection R-18 Assembly and Installation... R-20 UPPER DRAFT-O-MATIC COMPONENTS Removal and Disassembly R-22 Inspection... R-22 Assembly and Installation... R-24 CONTROL VALVE Disassembly... R-26 Inspection Assembly R R-28 DRAFT-O-MA TIC ADJUSTMENT... R-30 R-2

22 Mechanical Steering System FRONT WHEEL BEARINGS AND SEALS and 0-4 FRONT AXLES, STEERING COLUMN, LINKAGE AND STEERING GEAR (General Purpose) thru 0-17 Front Axles and 0-6 steering Colluiui : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Toe-In Front Wheel Turning Angle Removal of Steering Gear from Tractor Disassembly and Inspection Assembly and Installation of Steering Gear Service Suggestions and 0-17 FRONT AXLES, STEERING COLUMN AND STEERING GEAR ( std. 4 Wheel) thru 0-29 Front Axles steering Column Drag Link Adjustment Toe-In Front Wheel Turning Angle Removal and Disassembly of Steering Gear Inspection Assembly and Installation of steering Gear Service Suggestions and 0-29 Power Steering System POWER STEERING TORQUE MOTOR AND VALVE (General Purpose)0-30 thru 0-47 Removal of Torque Motor from Tractor Valve Removal, Disassembly, Inspection and Assembly Seal, Bearings and Valve Installation Disassembly and Inspection of Torque Motor Assembly of Torque Motor Installation and Bleeding Service Suggestions thru 0-47 POWER STEERING VALVE AND CYLINDER thru 0-53 Removal and Installation of the Cylinder and Valve.... Disassembly and Inspection Assembly Drag Link Adjustment Toe-In Checking Front Wheel Turning Angle Bleeding the System

23 SINGLE FRONT WHEEL BEARINGS AND SEALS Bearing Lubrication A grease fitting is provided on the single front wheel. Every 120 hours of operation pump approximately two strokes of wheel bearing grease into the wheel through this fitting. tautidn Always use a hand operated pressure gun and stop pumping when back pressure is noticed. If too much gun pressure is applied or if an air pressure type gun is used, there is danger of damaging the bearing seals. A correctly adjusted front wheel will have no end play and will have a noticeable drag when the wheel is turned. To adjust the bearings proceed as follows: 1. Lock brakes and block up tractor front end. 2. Remove the 4 capscrews (2 on each side of fork) Figure 0-2, and roll the wheel and tire out of the fork. Bearing Adjustment 6. If it is necessary to install newbearings, a puller must be used to remove the bearings. 3. Remove the nut and lockwasher from each end of the axle, then pull the fork extension blocks off the axle, Figure 0-2. NOTE DO NOT LOSE THE LOCATING PIN CARRIED INSIDE THE BLOCK. 4. Remove the felt washer retainer and the two felt washers located on each side of the wheel. 5. Located between the two axle shaft washers on each end of the axle, are.003 and.005 inch shims. If necessary add sufficient shims on both ends of the axle so there is a noticeable drag on the bearings when the wheel is turned on the axle. (Felt washers, felt retainer, fork extension blocks in place and axle shaft nuts tight). EXAMPLE To take up.004 inch total wear (.002 inch on each bearing), remove.003 inch shim from each end of axle and add one.005 inch shim to each end of axle. SHIMS RETAINER AND FELT WASHERS Figure With the shims in place between the axle shaft washers, install new felt washers and reinstall the felt retainers. Align the locating pin in each fork extension block with the key ways on the shaft and install the blocks. Install axle nuts with lockwashers. Tighten the axle nuts evenly and securely. 8. Replace wheel on fork. 0-4

24 INTRODUCTION P-3 POWER STEERING DRIVE BELT Replacement... P- 3 Adjustment... P-3 PUMP OPERATION OIL FLOW P--l Pump Operating at Low (Idle) Pump Speed P-4 Pum.p Operating at High (Idle) Pump Speed P-6 Pump Relief Valve P-6 POWER STEERING PUMP Removal, Disassembly and Inspection P-8 POWER STEERING PUMP Assembly and Installation P-IO FILLING AND BLEEDING THE POWER STEERING SYSTEM... P-12 RELIEF VALVE PRESSURE CHECK... P-12 P-2

25 INTRODUCTION HOW IT WORKS PARTS REMOVEb PRIOR 1'6 TRANsMissioN service.... SPLITTING THE TRACTOR (EXCEPT ORCHARD) ToP cover & shift cover: : : : : : : : : : ORCHARD TRANSMISSION TOP COVER AND SHIFT LEVERS 930 TRANSMISSION TOP COVER AND SHIFT LEVERS.... NGEUTRAL STAR T SWITCH ADJUSTMENT : : : : : : : : : : : : : : EAR SHIFTER ASSEMBLY SHIFTING SEQUENCE.... SHAFT REMOVAL SEQUENCE.... RANGE SHAFT ( EXCEPT ORCHARD).... RANGE SHAFT (CASE-O-MATIC).... RANGE SHAFT (ORCHARD).... RANGE SHAFT (930 GP).... SLIDING GEAR SHAFT REAR AXLES AND FINAL DRivE.... REAR AXLES AND FINAL DRIVE (HI:CLEARANCE): : : : : : : : : : : : : : : : : DIFFERENTIAL GEAR SHAFT ASSEMBLY COUNTERSHAFT.... REVERSE IDLER AND OIL' SLINGER SHAFT.... TRANSMISSION ADJUSTMENTS SPEEDOMETER DRIVE DIFFERENTIAL BRAKES'.... ADJUSTING DIFFERENTIAL BRAKES This manual covers the service procedures for the Case eight-speed forward, two-speed reverse transmission, final drive, differential brakes and speedometer drive. The transmission is housed in aheavyduty, one-piece case, which is attached directly to the traction clutch or torque converter housing. This case supports the operator's platform, power take-off and hydraulic pump, draft-o-matic and on some models, the fuel tank. A separate tractor frame to support these items is not required. INTRODUCTION SPRING SPECIFICATIONS S-2 S-3 S-4 S-4 S-6 S-7 S-8 S-9 S-10 S-12 S-15 S-16 S-20 S-24 S-28 S-32 S-36 S-40 S-44 S-48 S-52 S-54 S-56 S-58 S-60 Gear shafts are specially processed to reduce scoring and distortion and to lengthen the life of the transmission. All gears are precisely machined to insure correct tooth contact and long life. The differential spiral bevel ring gear and the counter shaft spiral bevel pinion gear are machined as a matched set for uniform tooth contact. The transmission operates in the m'3.nner described in Figure S-1. Free Wire Total Length Dia. Coils Compression Safety Switch Rod Spring (P. S-9, Ref. 5) 1.42".56" 8 5 lbs. at 1-1/8" Detent Ball Spring (P.S-11, Ref. 18) 1.56".080" 50 lbs. at 1" Plunger Outer Lockout Spring (P.S-11, Ref.9) 1.42".56" 8 5 lbs. at 1-1/8" Plunger Inner Locknut Spring(P.S-11,Ref.9) 1.56".047" lbs. at 1" Brake Disc Tension Spring(P.S-59,Ref.8).941".105" 3 20 lbs. at 1-1/16" of extension. S -2

26 IN'TRODUCTION SS-3 FOOT CLUTCH... SS-4 thru SS-7 Removal SS-4 Disassembly SS-4 Inspection SS-4 Assembly SS-6 Installation SS-6 RE LEASE LEVER ADJUSTMENT SS-6 HAND CLUTCH... II 88-8 TRACTION FOOT CLUTCH ADJUSTMENT... SS-10 TRACTION HAND CLUTCH ADJUSTMENT... SS-l1 SS-2

27 HOW IT WORKS REMOVAL AND INST ALLA TION PTO CLUTCH thru 38-9 Disassembly Inspection Assembly FIRST IDLER-S ECOND IDLER-OUTPUT SHAFT thru Disassembly Inspection Assembly PTO CLUTCH ADJUSTMENT PTO BRAKE ADJUSTMENT

28 INTRODUCTION 48-3 FOOT CLUTCH Removal Disassembly Inspection Assembly Installation RELEASE LEVER ADJUSTMENT TRACTION CLUTCH ADJUSTMENT

29 INTRODUCTION.... HOW IT WORKS.... OIL FLOW CHART - NEUTRAL. ILLUSTRATION X-5 OIL FLOW CHART - TORQUE CONVERTER DRIVE X-6 ILLUSTRA TION.... X-7 OIL FLOW CHART - DIRECT DRIVE.. ILLUSTRATION.... REMOVING THE TORQUE CONVERTER ILLUSTRATION.... X-2 X-3 X-4 X-8 X-9. X-I0. X-ll TORQUE CONVERTER - MULTIPLE DISC CLUTCH END.. X-12 ILLUSTRATION.... X-13 -TORQUE CONVERTER - SINGLE CLUTCH END.... X-14 ILLUSTRATION.... X-15 TORQUE CONVERTER - STATOR AND STATOR CARRIER. X-16 ILLUSTRATION.... X-17 CONTROL VALVE.... X-18 ILLUSTRATION.... X-19 CONTROL VALVE (Continued). X-20 ILLUSTRATION.... X-21 CONVERTER OIL PUMP..... X-22 ILLUSTRATION.... X-23 CONVERTER OIL PUMP (Continued).. X-24 ILLUSTRATION.... X-25 PRESSURE CHECKS.... X-26 ADJUSTING CONTROL VALVE LINKAGE. X-27 INTRODUCTION This manual covers the service procedures for the Case Case-O-Matic System torque converter, control valve and oil pump. The Case-O-Matic unit allows the tractor to be operated in either torque converter drive or direct drive. Each time the tractor is started from a standing position Case-O Matic drive automatically starts the tractor in torque converter drive. \Vhen the Powrclutch pedal is released to start the tractor moving: the main drive clutch at the rear of the converter is hydraulically engaged with the transmission. Torque converter drive starts heavy loads smoothly (up to 100% more drawbar pull than standard clutch tractor operation) without the necessity of downshifting. The direct drive clutch is hydraulically activated by a hand lever on the operator's console. The direct drive clutch engages the engine directly to the transmission, by-passing the torque converter. Direct drive can be used for light loads, although the tractor cannot be started in direct drive. The converter is housed in a heavy duty case between the transmission and the engine. The control valve is mounted on the left side (sitting in the tractor's operator's seat) of the converter housing. The oil pump is mounted on the right side of the housing. Three oil flow diagrams representing oil flow in neutral, torque converter and direct drive are given in the following pages. These diagrams with accompanying descriptions will aid you in understanding the Case-O Matic system and help you locate, diagnose and correct any difficulties which may occur in the system. The torque converter operates in the manner described in Figure X-I. X-2