MODEL: 300-B Loader & Backhoe Volume 1 of 2

John Deere MODEL: 300-B Loader & Backhoe Volume 1 of 2 THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF JOHN DEERE OR IT'S SUCCESSORS. JOHN DEERE 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. JD-S-TM1087

JD300-B LOADER AND BACKHOE LOADER CONTENTS 1 Technical Manual TM-1087 (Jun-85) Section 10 - GENERAL Group 5 Specifications Group 10 Predelivery, Delivery, and After-Sale Services Group 15 Lubrication Section 20 - ENGINE Group 5 Engine Removal and Installation Group 10 Basic Engine Group 15 Engine Lubrication System Group 20 Engine Cooling System Group 25 Fuel System Group 30 Speed Control Linkage Group 35 Air Intake System Group 40 Specifications and Special Tools Section 30 - ELECTRICAL SYSTEM Group 5 Batteries Group 10 Charging System Group 15 Starting System Group 20 Ignition System Group 25 Gauges and Switches Group 30 Specifications and Special Tools Section 40 - POWER TRAIN Group 5 Clutch Assemblies Group 10 Transmission Group 15 Reverser Group 20 Continuous Running PTO Group 25 Differential and Parking Brake Group 30 Final Drives Group 35 Specifications and Special Tools The specifications and design information contained in this manual were correct at the time it was printed. It is John Deere's policy to continually improve and update our machines. Therefore, the specifications and design information are subject to change without notice. Wherever applicable, specifications and design information are in accordance with SAE and ICED standards. Section 50 - HYDRAULIC SYSTEM Group 5 Transmission Pump Group 10 Main Hydraulic Pump Group 15 Reverser Clutch Control Valve Group 20 Pressure Control Valve Group 25 Steering Valve Group 30 Brake Valve Group 35 Loader Control Valve Group 40 Backhoe Control Valve Group 45 Selective Control Valve Group 50 Rockshaft System Group 55 Miscellaneous Hydraulic Components Group 60 Hydraulic Cylinders Group 65 Specifications and Special Tools Section 60 - MISCELLANEOUS COMPONENTS Group 5 Front End Assembly Group 10 Loader Frame, Boom and Bucket Group 15 Backhoe Frame, Boom, Dipperstick, and Bucket Group 20 3-Point Hitch Group 25 Specifications and Special Tools Section 70 - SYSTEM TESTING Group 5 General Information GroLJP 10 Engine Group 15 Electrical System Group 20 Power Train Group 25 Hydraulic System Group 26 Hydraulic System (Analyzer) Group 30 Miscellaneous Components Group 35 Specifications and Special Tools INDEX OOA

Loader and Backhoe Loader - TM-10B7 (Sep-79) 300-B General Specifications 10 5-1 CONTENTS OF THIS SECTION Section 10 GENERAL GROUP 5 - SPECIFICATIONS General Machine Specifications... 5-1 GROUP 15 - LUBRICATION Oils and Greases... 15-1 GROUP 10 - PREDELIVERY, DELIVERY, AND AFTER-SALE SERVICES Tern porary Machine Storage............... 10-1 Predelivery Service....................... 10-1 Delivery Service... " 10-14 After-Sale Inspection... 10-14 Group 5 GENERAL MACHINE SPECIFICATIONS (Specifications and design subject to change without notice. Wherever applicable specifications are in accordance with ICED and SAE Standards. Except where otherwise noted, these specifications are based on a unit equipped with 14.9-24, 6 ply rating, R4 rear tires; 11L-15, 8 ply rating, F-3 front tires; 3/4 cu. yd. (0.57 m3) utility bucket, and standard equipment.) Power @ 2500 engine rpm): SAE DIN Gross... 46 hp (34.3 kw*) Net... 43 hp (32.1 kw) 45.7 PS Net engine flywheel power is for an engine equipped with fan, air cleaner, water pump, lubricating oil pump, fuel pump, alternator, and muffler. Gross engine power is without fan. Flywheel power ratings are under SAE standard conditions of 500 ft. altitude and 85 F temperature and DIN 70 020 standard conditions of 760 mm Hg barometer (sea level) and 20 C temperature. *In the International System of Units (SI), power is expressed in kilowatts (kw). Engine: John Deere 3-cylinder diesel, valve-in-head, 4-stroke cycle Bore and stroke... 3.86 x 4.33 in. (98x110 mm) Piston displacement... 152 cu. in. (2491 cm 3) Compression ratio... 16.2 to 1 Maximum torque@ 1,300 rpm... 110 Ib-ft (149 Nm) (15.2 kg-m) NACC or AMA (U.S. Tax) horsepower... 17.88 Main bearings............................................. 4 Lubrication... Pressure system with full flow filter Cooling... Pressurized with thermostat and fixed bypass Fan... Suction Air cleaner.............................................. Dry Electrical system... 12 volt with alternator Batteries (two 12 volt)... Reserve capacity: 220 minutes Transmission: Constant mesh, 8 speeds forward, 8 reverse. Optional hydraulic direction reverser permits no-clutch reversing in all gears. Gear: mph Travel Speeds km/h FWd. Rev. Fwd. Rev. 1 1.3 1.6 2.1 2.6 2 1.9 2.2 3.1 3.5 3 2.9 3.3 4.7 5.3 4 4.0 4.7 6.4 7.6 5 5.3 6.2 8.5 10.0 6 7.6 8.8 12.2 14.2 7 11.2 13.0 18.0 20.9 8 15.7 18.3 25.3 29.4 Final Drives... Inboard, planetary Brakes... Hydraulically actuated, fully enclosed wet-disk. Self-equalizing. Foot-operated individually or simultaneously Hydraulic System: Closed-center Max. pressure... 2350 psi '(16 203 kpa) (165.2 kg/cm 2) Loader control... Single-lever Pump... Piston, constant pressure, variable-displacement, 28 gpm (106 Llmin) at 2500 engine rpm Filter... 25 micron steel-enclosed paper cartridge in return Engine Clutch. "... Foot-operated, single 10 in. (254 mm) plate with reverser; single 11 in. (280 mm) without reverser Litho in U. S.A.

Loader and Backhoe Loader - 300-B General 10 TM-1087 (Sep-79) Specifications 5-3 LOADER BACKHOE DIMENSIONS (9250-A BACKHOE) 1 (3.42 M) 11 FT. 3 IN. ADJUSTABLE BUCKET LINKAGE: I (4.14 M) 13 FT. 7.1 IN. (5.32 M) 1+----17 FT. 5.5 IN.+------~ WITH STANDARD BUCKET ~ STRAIGHT WALL DI GGI NG POWER DIGGING TRUCK LOADI NG (3.80 M) 12 FT. 5.5 IN. (4.16 M) 13 FT. 7.8 IN. 2FT (0.6 M) LEVEL BOTTOM 8 FT. (2.4 M) LEVEL BOTTO~1 T43943N Special Equipment Backhoe Collar shift transmission Counterweights with bracket (without 3-point hitch or remote cylinder) Deluxe seat Single remote hydraulic cylinder control with quickdisconnect coupler Swinging drawbar 3 inch seat belt 3-point hitch (Category 1 or 2 with sway blocks and regular or short links) Front axle counterweights Front grille guard Parking brake Rear PTO (continuous "live" 540 rpm) Rear wheel weights ROPS with canopy and seat belt Buckets: LOADER SPECIFICATIONS Nominal Heaped Capacity Width 3/4 cu. yd. (0.57 m 3 ) 81.125 in. (2.06 m) 1 cu. yd. (0.76 m 3 ) 81.125 in. (2.06 m) Operating Information: Rollback at ground level.... 20 deg. Breakout force... 5,000 lb. (22.41 kn) (2270 kg) Lifting capacity, full height... 3,300 lb. (1500 kg) Maximum dump angle... 45 deg. Reach at maximum height, bucket dumped at 45 degrees... 2 ft. 4 in. (711 mm) Raising time to full height... 3.7 sec. Bucket dump time... 1.6 sec. Lowering time (power)... 2.0 sec. Minimum effective rear wheel counterweight required, except when used with backhoe... 2,000 lb. (907 kg)

10 General 10-16 Predelivery, Delivery, and After-Sale Services 2. Transmission-Hydraulic System Oil Level and Oil Filter Element NOTE: Before checking oil level find out if customer has changed filter element (first 50 hours service). If changed at an earlier date, record information below: Approximate hours at change If not, change as follows: Loader and Backhoe Loader -300-B TM-10B7 (Sep-79) 3. Loader Backhoe Return Oil Filter Element NOTE: Before changing filter element find out if customer has changed element (first 50 hours service). If changed at an earlier date, record information below: Approximate hours at change If not, change as follows: Fig. 46-Transmission-Hydraulic System Filter Remove the transmission-hydraulic system oil filter cover and pull out rubber packing and filter element. Install new packing in groove in transmission case. Be sure packing is fully seated. Install new filter element and the filter cover. Tighten the filter cover cap screw to 55 Ib-ft (7.6 kg/m). Do not overtighten. After changing the filter element for the backhoe loader (item 3), check the transmission-hydraulic oil level. Fig. 47-Loader Backhoe Return Oil Filter Remove the hydraulic return filter cover and pull out rubber packing and filter element. Install new packing in groove in transmission case. Be sure packing is fully seated. Install new filter element and the cover. Tighten the filter cover cap screw to 55 Ib-ft (7.6 kg/m). Do not overtighten. Check transmission-hydraulic oil level. Transmission-hydraulic element changed. Yes No Fig. 48-Transmission-Hydraulic System Dipstick Resting On Top Threads Fig. 49-Transmission-Hydraulic System Filler Cap

Loader and Backhoe Loader - 300-B TM-10B7 (Sep-79) Engine 20 Engine Removal and Installation 5-1 CONTENTS OF THIS SECTION Section 20 ENGINE GROUP 5 - ENGINE REMOVAL AND INSTALLATION Removal... 5-3 Installation... 5-4 GROUP 10 - BASIC ENGINE General Information... 10-1 Cylinder Head and Valves Valve Lift Check... 1 0-2 Removal... 1 0-2 Repair... 1 0-2 Assembly... 1 0-5 Installation... 1 0-5 Camshaft Removal... 1 0-7 Repair... 10-8 Installation... 10-8 Cylinder Block, Liners, Pistons and Rods Removal... 1 0-9 Repair... 10-9 Installation... 10-12 Crankshaft, Main Bearings, and Flywheel Removal... 1 0-13 Repair... 13-14 Installation... 1 0-16 Timing Gear Train Removal... 1 0-18 Repair... 1 0-19 Installation... 1 0-20 GROUP 15 - ENGINE LUBRICATION SYSTEM General Information... 15-1 Oil Pump Removal...... 15-1 Repair... 15-1 Installation... 15-2 Oil Filter Removal... 15-3 Repair... 15-3 Installation... 15-3 GROUP 20 - ENGINE COOLING SYSTEM General Information... 20-1 Radiator Removal... 20-1 Repair... 20-1 Installation... 20-1 GROUP 20 - ENGINE COOLING SYSTEM -Continued Water Pump Removal... 20-2 Repair... 20-2 Installation... 20-4 Thermostat and Housing Removal... 20-4 Repair... 20-4 Installation... 20-4 GROUP 25 - FUEL SYSTEM General Information... 25-1 Fuel Tank Removal... 25-1 Repair... 25-2 Installation... 25-2 Fuel Tank Screen Removal... 25-2 Repair... 25-2 Installation... 25-2 Fuel Filter Removal... 25-3 Repair... 25-3 Installation... 25-3 Fuel Transfer Pump Removal... 25-3 Repair... 25-3 Installation... 25-3 Fuel Injection Pump Removal... 25-4 Repair... 25-5 (Refer to SM-2045 "Testing and Servicing Fuel Injection Pumps and Nozzles") Installation... 25-5 Bleeding... 25-6 Fuel Injection Nozzles Removal... 25-7 Repair... 25-7 (Refer to SM-2045 "Testing and Servicing Fuel Injection Pumps and Nozzles") Installation... 25-7 Carburetor Removal... 25-8 Repair... 25-8 Preliminary Adjustment...... 25-11 Installation... 25-11

20 Engine Loader and Backhoe Loader - 300-B 5-2 Engine Removal and Installation TM-10B7 (Sep-79) CONTENTS OF THIS SECTION-Continued GROUP 25 - FUEL SYSTEM-Continued Governor Removal... 25-12 Repair... 25-12 Installation... 25-13 GROUP 30 - SPEED CONTROL LINKAGE General Information... 30-1 GROUP 35 - AIR INTAKE SYSTEM General Information... 35-1 Air Cleaner Removal... 35-1 Repair... 35-1 Installation... 35-2 GROUP 35 - AIR INTAKE SYSTEM-Continued Manifolds Removal... 35-2 Repair... 35-2 Installation... 35-2 GROUP 40 - SPECIFICATIONS AND SPECIAL TOOLS Engine Removal and Installation....40-1 Basic Engine... 40-3 Engine Lubrication System....40-15 Engine Cooling....40-17 Fuel System... 40-19 Speed Control Linkage....40-29

Loader and Backhoe Loader - 300-B Electrical System 30 TM-10B7 (May-77) Batteries 5-1 Section 30 ELECTRICAL SYSTEM CONTENTS OF THIS SECTION GROUP 5 - BATTERIES GROUP 20 - IGNITION SYSTEM General Information... 5-2 General Information... 20-1 Precautions... 5-2 Distributor... 20-2 Removal... 5-3 Coil... 20-6 Inspection... 5-3 Spark Plugs... 20-6 Testing... 5-3 Charging the Batteries... 5-5 GROUP 25 - GAUGES AND SWITCHES Installation... 5-6 General Information... 25-1 Dash Removal..... 25-3 GROUP 10 - CHARGING SYSTEM Gauge and Switch Removal... 25-3 General Information... 10-1 Dash Installation... 25-3 Removal... 10-2 Gauge and Switch Installation... 25-3 Disassembly... 10-2 Alternator Component Tests... 10-6 GROUP 30 - SPECIFICATIONS AND Assembly... 10-1 0 SPECIAL TOOLS Tests After Assembly... 10-10 Batteries... 30-1 Installation... 10-11 Charging System... 30-2 Starting System... 30-5 GROUP 15 - STARTING SYSTEM Ignition System... 30-9 General Information... 15-1 Gauges and Switches... 30-12 Removal... 15-2 Testing and Diagnosis... 15-2 Repair... 15-4 Assembly... 15-8 Installation... 15-1 0

Loader and Backhoe Loader - 300-B TM-1087 (Dec-78) Power Train 40 Clutch Assemblies 5-1 CONTENTS OF THIS SECTION Section 40 POWER TRAIN GROUP 5 - CLUTCH ASSEMBLIES General Information... 5-2 Clutch and Controls... 5-2 Removal... 5-2 Repair... 5-12 Installation... 5-14 Single Stage Clutch... 5-4 Repair... 5-4 Dual Stage Clutch... 5-8 Repair... 5-8 GROUP 10 - TRANSMISSION General Information... 10-1 Removal... 1 0-1 Repair... 1 0-5 Differential Drive Shaft...... 10-5 Transmission Drive Shaft...... 10-6 Counters haft... 1 0-7 Transmission Oiling System... 10-8 Transmission Case... 10-8 Adjustments... 1 0-8 Cone Point Adjustment..... 10-8 Preload Adjustment... 1 0-9 Transmission Drive Shaft...... 10-9 Counters haft... 10-9 Installation... 10-9 GROUP 15 - REVERSER General Information... 15-1 Removal... 15-1 Forward Clutch Assembly............... 15-1 Transmission Oil Pump... 15-1 Reverse Brake Assembly............... 15-1 Repair... 15-2 Reverse Brake Assembly............... 15-2 Forward Clutch Pack... " 15-4 Reverser Control Lever and Linkage..... 15-5 Reverse Clutch Housing... " 15-6 Installation............................... 15-6 GROUP 20 - CONTINUOUS RUNNING PTO General Information... 20-1 Removal... 20-3 Repair... 20-4 Installation... 20-4 GROUP 25 - DIFFERENTIAL AND PARKING BRAKE General Information... 25-1 Removal... 25-2 Repair... 25-2 Adjustment... 25-3 Parking Brake... 25-5 Adjustment... 25-5 Installation... 25-6 GROUP 30 - FINAL DRIVES General Information... 30-1 Removal... 30-1 Repair... 30-2 Adjustment... 30-4- Installation... 30-4 GROUP 35 - SPECIFICATIONS AND SPECIAL TOOLS Clutch Assemblies... 35-1 Specifications and Torque Values... 35-1 Special Tools... 35-3 Transmission... 35-5 Specifications and Torque Values... 35-5 Special Tools... 35-5 Reverser... 35-6 Specifications and Torque Values... 35-6 Differential and Parking Brake Specifications and Torque Values... 35-6 Final Drives... 35-8 Specifications and Torque Values... 35-8

Loader and Backhoe Loader - JD300-B TM-1087 (Jun-85) Hydraulic System 50 Transmission Pump 5-1 Section 50 HYDRAULIC SYSTEM CONTENTS OF THIS SECTION GROUP 5 - TRANSMISSION PUMP General Information... 5-3 Removal... 5-3 Repair... 5-3 Installation... 5-4 GROUP 10 - MAIN HYDRAULIC PUMP General Information... 10-1 Removal... 10-1 Repair (Pump Without Serial Number Plate).. 10-2 Repair (Pump With Serial Number Plate)... 10-21 Installation... 10-43 GROUP 15 - REVERSER CLUTCH CONTROL VALVE General Information... 15-1 Removal... 15-1 Repair... 15-1 Installation... 15-1 GROUP 20 - PRESSURE CONTROL VALVE General Information... 20-1 Removal... 20-1 Repair... 20-1 Installation..., 20-2 GROUP 25 - STEERING VALVE General Information... 25-1 Removal... 25-1 Repair... '................. 25-2 Assembly................................ 25-5 Installation... 25-5 GROUP 30 - BRAKE VALVE General Information... 30-1 Removal... 30-1 Repair... 30-1 Installation............................... 30-2 GROUP 35 - LOADER CONTROL VALVE Loader Control Valve ( -259737) General Information... 35-1 Removal.......................... 35-1 Repair................................ 35-1 Loader Control Valve (259738- ) General Information... 35-4 Removal... 35-7 Repair................................ 35-8 Assembly... 35-10 Installation... 35-11 GROUP 40-9250 BACKHOE CONTROL VALVE General Information... 40-1 Removal... 40-3 Repair... 40-3 Installation... 40-5 Replacing Control Linkage................ 40-6 GROUP 41-9250-A BACKHOE CONTROL VALVE General Information......... 41-1 Removal... 41-3 Repair... 41-3 Installation............................... 41-5 Repairing Control Linkage... 41-6 GROUP 45 - SELECTIVE CONTROL VALVE General Information... " 45-1 Removal... 45-1 R'epair... 45-1 Adjustment.............................. 45-5 Installation............................... 45-6 GROUP 50 - ROCKSHAFT SYSTEM General Information... 50-1 Removal... 50-1 Repair... 50-1 Installation............................... 50-6 Load Control Mechanism................. 50-6 Removal.............................. 50-6 Repair................................ 50-6 Installation... 50-8 Adjustments... 50-9 GROUP 55 - MISCELLANEOUS HYDRAULIC COMPONENTS Transmission Filter... 55-1 Function Return Filter... 55-2 Oil Cooler............................... 55-3 Auxiliary Reservoir... 55-3 Transmission Pump Relief Valve... 55-4 Inlet Line Check Valve... 55-4 Accumulator... 55-5 Quick Disconnect Coupler... 55-8 I

50 Hydraulic System 5-2 Transmission Pump Loader and Backhoe Loader - JD300-B TM-10B7 (Sep-79) GROUP 60 - LOADER CYLINDERS General Information... 60-1 Loader Bucket Cylinder................... 60-2 Removal.............................. 60-2 Repair................................ 60-2 Installation... 60-2 Loader Boom Cylinder... 60-3 Removal... 60-3 Repair................................ 60-3 Installation............................. 60-3 V-Packing and Rod Guide... 60-4 GROUP 61 - REMOTE CYLINDER Removal... 61-1 Repair... 61-1 Installation... 61-2 GROUP 62-9250 BACKHOE CYLINDERS General Information... 62-1 Bucket Cylinder... 62-2 Removal.............................. 62-2 Repair................................ 62-2 Installation... 62-2 Boom Cylinder... 62-3 Removal.............................. 62-3 Repair................................ 62-3 Installation... 62-3 Crowd Cylinder.......................... 62-4 Removal.............................. 62-4 Repair................................ 62-4 Installation............................. 62-4 Swing Cylinder........................... 62-5 Removal.............................. 62-5 Repair................................ 62-5 Installation... 62-5 Stabilizer Cylinder........................ 62-6 Removal.............................. 62-6 Repair... 62-6 Installation..., 62-6 V-Packing and Rod Guide... 62-7 GROUP 63-9250-A BACKHOE CYLINDERS General Information... 63-1 Bucket Cylinder.......................... 63-2 Removal.............................. 63-2 Repair... 63-2 Installation... 63-2 Boom Cylinder... 63-3 Removal.............................. 63-3 Repair................................ 63-3 Installation... 63-3 Crowd Cylinder... 63-4 Removal.............................. 63-4 Repair................................ 63-4 Installation............................. 63-4 Swing Cylinder... 63-5 Removal.............................. 63-5 Repair................................ 63-5 Installation... 63-5 Stabilizer Cylinder... 63-6 Removal.. ".......................... 63-6 Repair................................ 63-6 Installation............................. 63-6 V-Packing and Rod Guide... 63-7 GROUP 65 - SPECIFICATIONS AND SPECIAL TOOLS Transmission Pump... 65-1 Main Hydraulic Pump... 65-2 Reverser Clutch Control Valve... 65-7 Pressure Control Valve... 65-9 Steering Valve... 65-9 Brake Valve... 65-12 Loader Control Valve.................... 65-13 Backhoe Control Valve... 65-15 9250, 9250-A Selective Control Valve.................. 65-17 Rockshaft System... " 65-18 Miscellaneous Hydraulic Components... 65-18 Cylinders... 65-21 I\. CAUTION: Escaping fluid under pressure.. can have sufficient force to penetrate the skin, causing serious personal injury. Before disconnecting lines, be sure to relieve all pressure. Before applying pressure to the system, be sure all connections are tight and that all lines and hoses are not damaged. Fluid escaping from a very small hole can be almost invisible. Use a piece of cardboard or wood, rather than hands to search for suspected leaks. If injured by escaping fluid, see a doctor at once. Serious infection or reaction can develop if proper medical treatment is not administered immediately. Litho in U. S.A.

50 10-6 Hydraulic System Main Hydraulic Pump Loader and Backhoe Loader - JD300-B TM-1087 (Jun-85) NEW SPRING SPECIFICATIONS Free length (approximate)... 0.480 in. (12.19 mm) Test length at 2.84 ± 0.30 lb. force....... 0.30 in. (12.6 ± 0.1 N... 7.6 mm) 1-Punch 2-lnlet Valve 3-0utlet Valve Seat Fig. 17-Remove Inlet Valves NOTE: Cutaway section of a pump housing is shown. IMPORTANT: If inlet valves are removed, new valves must be installed because the press fit is criti, cal for sealing. 28. To remove the inlet valves (2, Fig. 17), put a punch (1) through the outlet valve seat (3) and against center of valve face. Hit punch to drive out inlet valve. 1-JDH-398-1 Installer and Removal Tool 2-0utlet Valve Seat (8 used) Fig. 19-1nstalllnstaller and Removal Tool T75249 NOTE: Cutaway section of a pump housing is shown. 32. Visually inspect outlet valve seats (2) for peening or breakage. IMPORTANT: If outlet valve seats are removed, new seats must be installed because the press fit is critical for sealing. Remove seats (2, Fig. 19) using the JOH-39B-1 Installer and Removal Tool (1) from the JOH-39B Hydraulic Pump Seat Installing Tool Set. Put the special cap screw through piston bore opening and install into tool. A-Outlet Valve 8-Spring C-Guide D-Stop T85461, Fig. 18-lnspect Outlet Valve Assemblies 29. Inspect guides (C, Fig. 18) and stops (0) for wear or damage. 30. Inspect outlet valves (A) for scratched or broken wear patterns. If these patterns are found, replace valve and seat in pump housing. 31. Inspect springs (B) for wear or damage. Check spring compression rate using the spring compression tester. 1-Slide Hammer 2-Adapter 3-JDH-398-1 Installer and Removal Tool Fig. 20-Remove Outlet Valve Seats T75250

Loader and Backhoe Loader - 300-B Miscellaneous Components 60 TM-10B7 (Feb-76) Front End Assembly 5-1 Section 60 MISCELLANEOUS COMPONENTS CONTENTS OF THIS SECTION GROUP 5 - FRONT END ASSEMBLY General Information... 5-1 Front End Support Removal... 5-1 Repair... 5-3 Installation... 5-4 Front Axle and Steering Linkage Removal... 5-6 Repair... 5-6 Installation... 5-8 GROUP 10 - LOADER FRAME, BOOM AND BUCKET General Information... 10-1 Removal... 1 0-1 Repair... 10-2 Special Welding Instructions... 10-4 Installation... 10-5 GROUP 15-9250 BACKHOE FRAME, BOOM, DIPPERSTICK, AND BUCKET General Information..., 15-1 Removal... 15-1 Repair... 15-3 Installation... 15-8 GROUP 16-9250-A BACKHOE FRAME, BOOM, DIPPERSTICK, AND BUCKET General Information...................... 16-1 Removal... 16-1 Repair... 16-3 Installation............................... 16-9 GROUP 20-3-POINT HITCH General Information... 20-1 Removal... 20-2 Repair... 20-2 Installation... 20-2 GROUP 25 - SPECIFICATIONS AND SPECIAL TOOLS Front End Assembly... 25-1 GENERAL INFORMATION The front end support serves as a mounting for the radiator, hydraulic pump, fuel tank, and air cleaner. Group 5 FRONT END ASSEMBL V The swept-back front axle mounts on the front end support. Swept-back axles give a shorter turning radius for sharper turns in close quarters. A FRONT END SUPPORT REMOVAL CAUTION: Remove battery ground strap.. for safety. Remove loader (see Group 10 of this section). Remove front ballast (if used). Fig. 1-Removing Grille Screens Pullout on top edge of each grille screen. Lift screen to clear pins in front end support. Disconnect springs (Fig. 1) and remove screens.

Loader and Backhoe Loader - 300-B System Testing 70 TM-10B7 (Sep-79) General Information 5-1 CONTENTS OF THIS SECTION Section 70 SYSTEM TESTING GROUP 5 - GENERAL INFORMATION - SEVEN BASIC STEPS OF DIAGNOSIS AND TESTING... 5-2 GROUP 10 - ENGINE General Information... 10-1 Diagnosing Malfunctions... 10-3 Visual Inspection......................... 10-6 Testing and Adjustments.................. 10-8 GROUP 15 - ELECTRICAL SYSTEM General Information... 15-1 Diagnosing Malfunctions... 15-7 Testing and Adjustment... 15-18 GROUP 20 - POWER TRAIN General Information... 20-1 Diagnosing Malfunctions... 20-7 Visual Inspection......................... 20-9 Testing and Adjustment.................. 20-10 GROUP 25 - HYDRAULIC SYSTEM General Information... 25-1 Diagnosing Malfunctions... 25-21 Testing and Adjustment... 25-26 GROUP 26 - HYDRAULIC SYSTEM (ANALYZER) General Information... 26-1 Pretest Inspection... 26-3 Operational Test... 26-3 Test and Adjustment... 26-8 List of Parts for Tests... 26-27 GROUP 30 - MISCELLANEOUS COMPONENTS Adjustment... 30-1 GROUP 35 - SPECIFICATIONS AND SPECIAL TOOLS Engine... 35-1 Electrical System......................... 35-5 Power Train... 35-10 Hydraulic System........................ 35-12 Hydraulic System (Analyzer).............. 35-17 Miscellaneous Components............... 35-22

Loader and Backhoe Loader - 300-B TM-10B7 (Sep-79) Index 1 A Accumulator, hydraulic oil... 50-55-5 After-sale inspection..., 10-10-14 Air cleaner... 20-35-1 Air intake system........................ 20-35-1 Air restriction indicator... 20-35-2 Alternator............................... 30-10-1 Assem bly.... '30'-10-10 Testing...,. 30-10-6 Alternator indicator lamp... 30-25-1 Auxiliary reservoir, hydraulic... 50-55-3 Axle, front... 60-5-6 Axle, front, adjustment... 70-30-1 Axle, rear............................... 40-30-2 B Backhoe, 9250... 60-15-1 Main frame... 60-15-4 Backhoe, 9250-A........................ 60-16-1 Backhoe boom cylinder, 9250... 50-62-3 Backhoe boom cylinder, 9250-A... 50-63-3 Backhoe bucket cylinder, 9250... 50-62-2 Backhoe bucket cylinder, 9250-A... 50-63-2 Backhoe control valve, hydraulic, 9250................................. 50-40-1 Control linkage... 50-40-6 Backhoe control valve, hydraulic, 9250-A............................... 50-41-1 Backhoe crowd cylinder, 9250... 50-62-4 Backhoe crowd cylinder, 9250-A... 50-63-4 Backhoe stabilizer cylinder, 9250.......... 50-62-6 Backhoe stabilizer cylinder, 9250-A... 50-63-6 Backhoe swing cylinder, 9250... 50-62-5 Backhoe swing cylinder, 9250-A... 50-63-5 Basic engine............................ 20-10-1 Batteries... 30-5-2 Bearings, main......................... 20-10-12 Boom, backhoe, 9250.................... 60-15-3 Boom, backhoe, 9250-A... 60-16-3 Boom cylinder, backhoe, 9250... 50-62-3 Boom cylinder, backhoe, 9250-A... 50-63-3 Boom cylinder, loader.................... 50-60-3 Boom, loader... 60-10-3 Brake assembly, reverser... 40-15-1 Brake, parking... 40-25-5 Brake system malfunctions... 70-25-22 Brake valve............................. 50-30-1 Bucket, backhoe, 9250.................. 60-15-5 Bucket, backhoe, 9250-A... 60-16-5 Bucket cylinder, backhoe, 9250... 50-62-2 Bucket cylinder, backhoe, 9250-A... 50-63-2 Bucket cylinder, loader... 50-60-2 Bucket, loader........................... 60-10-4 INDEX C Camshaft............................... 20-10-7 Carburetor.............................. 20-25-8 Charging system... 30-10-1 Circuit breaker... 30-25-3 Cigar lighter............................. 30-25-1 Clutch assemblies....40-5-2 Clutch and controls.................... 40-5-12 Dual stage clutch... 40-5-8 Single stage clutch... 40-5-4 Clutch controls..., 40-5-12 Coil, ignition... 30-20-1 Connecting rods......................... 20-10-8 Countershaft, transm ission................ 40-10-7 Crankshaft............................. 20-10-13 Crowd cylinder, backhoe, 9250... 50-62-4 Crowd cylinder, backhoe, 9250-A... 50-63-4 Cylinder block........................... 20-10-9 Cylinder head........................... 20-10-2 Cylinder liners........................... 20-10-8 Cylinder liners, deglazing... 20-10-10 Cylinder liners, installation... 20-10-11 Cylinder, remote stop... 50-61-1 Cylinders, hydraulic, backhoe, 9250... 50-62-1 Boom.............................. 50-62-3 Bucket............................. 50-62-2 Crowd... 50-62-4 Stabilizer........................... 50-62-6 Swing.............................. 50-62-5 Cylinders, hydraulic, backhoe, 9250-A...................... 50-63-1 Boom.......................... 50-63-3 Bucket............................. 50-63-2 Crowd... 50-63-4 Stabilizer........................... 50-63-6 Swing.............................. 50-63-5 Cylinders, loader... 50-60-1 D Dash................................... 30-25-3 Dash lamp.............................. 30-25-2 Deglazing cylinder liners... 20-10-10 Delivery service... 10-10-14 Diagnosis and testing, basic... 70-5-2 Differential and parking brake............. 40-25-1 Adjustments... 40-25-3 Differential lock... 40-25-4 Parking brake......................... 40-25-5 Differential lock.......................... 40-25-4 Distributor... 30-20-1 Testing... 30-20-2,30-20-5 Dual stage clutch....40-5-8

2 Index Loader and Backhoe Loader - TM-10B7 '300-B (Sep-79) E Electrical system testing.................. 70-15-1 Block diagram... 70-15-12 Com ponent location... 70-15-11 Malfunctions.......................... 70-15-7 Operational theory..................... 70-15-1 Precautions........................... 70-15-5 Schematic diagram..., 70-15-13 Tests and adjustments..,... 70-15-18 Visual inspection...................... 70-15-6 Wiring routes... 70-15-14 Engine, basic... 20-10-2 Camshaft... " 20-10-6 Connecting rods....................... 20-10-8 Crankshaft... _.. 20-10-12 Cylinder block......................... 20-10-8 Cylinder head......................... 20-10-2 Cylinder liners... 20-10-8 Flywheel..., 20-10-12 Main bearings........................ 20-10-12 Pistons............................... 20-10-8 Rocker arm assembly... 20-10-4 Timing gear train... 20-10-16 Valves..... 20-10-2 Engine break-in..., 20-40-10 Engine cooling system................... 20-20-1 Engine, fuel system... 20-25-1 Engine, lubrication system... 20-15-1 Engine malfunctions... 70-10-3 Engine oil pressure adjustment... 70-10-10 Engine oil pressure indicator lamp... 30-25-1 Engine oil pressure switch................ 30-25-1 Engine, removal and installation... 20-5-3 Engine speed control linkage.,.......... 70-10-13 Engine system testing.................... 70-10-1 Malfunctions.......................... 70-10-3 Operational theory..................... 70-10-1 Tests and adjustments... 70-10-8 Visual inspection...................... 70-10-6 F Fan belt adjustment...., 70-10-11 Filter, fuel... 20-25-3 Filter, function return, hydraulic... 50-55-2 Filter, transmission-hydraulic oil... " 50-55-1 Filter, oil... 20-25-3 Final drives............................. 40-30-1 Adjustment... 40-30-4 Brake assembly components... 40-30-4 Rear axle components... 40-30-2 Flasher................................. 30-25-2 Flywheel............................... 20-10-12 Forward clutch assembly, reverser...,... 40-15-1,40-15-4 Front axle and steering linkage... 60-5-6 Front axle toe-in adjustment...,. 70-30-1 Front end assembly... 60-5-1 Front axle...,... 60-5-6 Front end support... 60-5-4 Fuel filter...,......... 20-25-3 Fuel gauge... 30-25-3 Fuel injection nozzles.,...,. 20-25-7 Fuel injection pump..., " 20-25-4 Fuel system...,...,............... 20-25-1 Fuel tank...,... 20-25-1 Fuel tank screen...................... 20-25-2 Fuel transfer pump... 20-25-3 Function return filter... 50-55-2 G Gauges and switches.................... 30-25-1 Gear train, timing... 20-10-16 General after-sale inspection... 10-10-16 General predelivery service............... 10-10-1 General specifications... 10-5-1 Governor, engine....................... 20-25-12 Governor linkage adjustment.... 70-10-12 H Horn Switch............................. 30-25-3 Hydraulic oil accumulator................. 50-55-5 Hydraulic oil cooler...................... 50-55-3 Hydraulic system (analyzer) Testing............................... 70-26-1 Operational checks.................. 70-26-3 Pretest check sheet.................. 70-26-4 Pretest inspection..................... 70-26-3 Symptom index... 70-26-5 Tests... 70-26-8 Hydraulic pressure control valve... 50-20-1 Components.......................... 50-20-1 Pressure control valve ( -246127)... 50-20-1 Pressure control valve (246128- )... _. _ 50-20-1 Hydraulic pump, main...,... 50-10-1 Adjustment... 50-10-5 Pump drive ( -269524)... 50-10-5 Pump drive (269525- )......... 50-10-6 Oil flow... 50-10-1 Hydraulic reservoir, auxiliary.............. 50-55-3 HydrauliC selective control valve... 50-45-1 HydrauliC system malfunctions........... 70-25-21 Hydraulic system testing... 70-25-1 Diagnosing malfunctions... 70-25-21 Operational theory..................... 70-25-1 Testing and adjustments... " 70-25-26

Loader and Backhoe Loader - 300-B TM-10B7 (Sep-79) Hydraulic System Testing-Continued Testing and Adjustments-Continued Brake system adjustment and bleeding... 70-25-31 Bleeding air from brake system... 70-25-31 Brake pedal and equalizing valve adjustment... 70-25-31 Loader and backhoe functions....... 70-25-29 Main hydraulic pump... ;.:. 70-25-27 Testing with hydraulic test. unit... 70-25-27 Testing with pressure gauge... 70-25-27 Pressure control valve ( -246127)... 70-25-29 Testing with pressure gauge... 70-25-29 Testing without pressure gauge........................ 70-25-29 Pressure control valve (246128- )... 70-25-30 Testing with 0 to 3000 psi (0 to 211 kg/cm!) pressure gauge........................ 70-25-30 Reverser clutch control valve........ 70-25-32 Clutch control valve test.......... 70-25-32 Pressure regulating valve adjustment..., 70-25-32 Shift adjustment... 70-25-33 Rockshaft system.................. 70-25-28 Flow control valve check... 70-25-28 Thermal relief valve check........ 70-25-28 Time cycle checks............... 70-25-29 Selective control valve.............. 70-25-28 Steering system.................... 70-25-30 Transmission pump... 70-25-26 Checking with flow meter......... 70-25-26 Hydraulic transmission oil filter... 50-55-1 Ignition system.......................... 30-20-1 Injection pump, fuel...................... 20-25-4 Bleeding.............................. 20-25-6 Timing... 20-25-5 Injection pump, fuel, adjustments... 70-10-12 Inlet line check valve, hydraulic........... 50-55-4 Inspection, after-sale.................... 10-10-16 K. Key switch.............................. 30-25-2 L Light switch............................. 30-25-2 Lights........................ 30-25-2 Load control mechanism... 50-50-6 Index 3 Loader... 60-10-1 Boom............................. 60-10-3 Bucket............................... 60-10-4 Side frames... 60-10-2 Special welding instructions... 60-10-4 Loader boom cylinder... 50-60-1,50-60-3 Loader bucket cylinder................... 50-60-2 Loader control valve ( -259737)...................... 50-35-1 Inspecting relief valves... 50-35-3 Loader control valve (259738- )...................... 50-35-4 Assembly... 50-35-10 Control valve linkage............. 50-35-11 Components... 50-35-8,50-35-11 Oil flow............................... 50-35-4 Relief valves.......................... 50-35-7 Loader cylinders......................... 50-60-1 Boom... 50-60-1,50-60-3 Bucket............................... 50-60-2 Lock, differential......................... 40-25-4 Lubricants... 1 0-15-1 Lubrication system, engine... 20-15-1 M Main bearings... 20-10-12 Main frame, backhoe, 9250... 60-15-4 Main frame, backhoe, 9250-A... 60-16-4 Malfunctions: Basic engine... 70-10-3 Brake system........................ 70-25-22 Electrical system..................... 70-15-7 Hydraulic pump... 70-25-21 Hydraulic system..................... 70-25-21 Power train........................... 70-20-7 Rockshaft... 70-25-23 Selective control valve hydraulic.......................... 70-25-24 Steering system...................... 70-25-22 o Oil cooler, hydraulic... 50-55-3 Oil filter, engine..,... 20-15-3 Oil filter relief valve...................... 50-55-1 Oil pan installation...................... 20-10-12 Oil pressure regulating valve.............. 20-15-2 Oil pump, engine... 20-15-1 Oil pump, transmission... 50-5-3 Oiling system, transmission... 40-10-8 p Parking brake........................... 40-25-5 Pistons................................. 20-1 0-8 Utho in U.S.A.

4 Index Power train system testing... 70-20-1 Block diagram... 70-20-5 Diagnosing malfunctions... 70-20-7 Operational theory..................... 70-20-2 Testing and adjustments.............. 70-20-10 Clutch assemblies... 70-20-10 Adjusting clutch pedal free travel (units without reverser)...................... 70-20-10 Adjusting for clutch wear (units with reverser)............ 70-20-10 Clutch pedal position adjustments... 70-20-11 Differential and parking brake... 70-20-12 Reverser... 70-20-11 Adjusting high speed lockout pin clearance ( -277181)... 70-20-12 Adjusting reverser neutral lock position ( -277181)... 70-20-12 Engine stall test........ 70-20-11 Visual inspection...................... 70-20-9 Pressure control valve... 50-20-1 PTO, continuous running... 40-20-1 Disconnect... 40-20-4 Pump drive ( -269524)... 50-10-5 Pump drive (269525- )............. 50-10-6 Pump, fuel injection... 20-25-4 Pump, fuel transfer... 20-25-3 Pump, hydraulic... 50-10-1 Pump, oil... 20-15-1 Pump, transmission oil... 50-5-3 Pump, water............................ 20-20-2 R Radiator... 20-20-1 Rear axle, final drive... :... 40-30-2 Remote cylinder stop... 50-61-1 Reservoir, hydraulic auxiliary... 50-55-3 Reverser... 40-15-1 Reverser clutch control valve... 50-15-1 Ripper tooth, backhoe, 9250-A... 60-16-6 Rocker arm assembly... 20-10-4 Rockshaft system........................ 50-50-1 Adjustments... "... 50-50-9 Rods, connecting........................ 20-10-8 5 Safety cautions... 3-8 Selective control valve................... 50-45-1 Adjustments... 50-45-5 Installation............................ 50-45-6 Service, delivery........................ 10-10-15 Service, predelivery... 10-10-1 Loader and Backhoe Loader - 300-B TM-10B7 (Sep-79) Single stage clutch... 40-5-4 Spark plugs... 30-20-2,30-20-6 Special tools: Batteries... 30-30-1 Charging system...................... 30-30-3 Clutch assemblies... 40-35-3 Cooling system... 20-40-18 Electrical system testing... 70-35-8 Engine, basic... 20-40-11 Engine removal...... 20-40-2 Engine testing... 70-35-3 Front end assembly...,... 60-25-4 Fuel system... 20-40-21 Hydraulic components... 50-65-20 Hydraulic cylinders......... 50-65-22 Hydraulic pump, main... 50-65-5 Hydraulic system testing.............. 70-35-15 Ignition system... 30-30-11 Lubrication system... 20-40-16 Selective control valve................ 50-65-17 Starting system... 30-30-7 Steering valve... 50-65-11 Transmission... 40-35-5 Special welding instructions............... 60-10-4 Specifications: Backhoe control valve-9250, 9250-A............................ 50-65-15 Batteries... 30-30-3 Brake valve.......................... 50-65-12 Charging system................... 30-30-3 Clutch assemblies... 40-35-1 Cooling system... 20-40-17 Differential... 40-35-6 Electrical system testing... 70-35-5 Engine, basic... 20-40-3 Engine, break-in... 20-40-10 Engine removal....................... 20-40-1 Engine testing... 70-35-1 Final drives... 40-35-8 Front end assembly... 60-25-1 Fuel system... 20-40-19 Gauges and switches... 30-30-12 General... 1 0-5-1 Backhoe dimensions... 10-5-3 Brakes... 1 0-5-1 Dimensions... 10-5-2 Engine... 10-5-1 Horsepower...,... 10-5-1 Hydraulic system... 10-5-2 Loader... 10-5-2 Special equipment... 10-5-4 Standard equipment... 10-5-3 Steering... 10-5-2 Tire and wheel... 10-5-2 Transmission... 10-5-1

Loader and Backhoe Loader - 300-B TM-10B7 (Sep-79) Specifications-Continued Hydraulic components... 50-65-18 Hydraulic cylinders... 50-65-21 Hydraulic pump, main.................. 50-65-2 Hydraulic system testing.............. 70-35-12 Ignition system... 30-30-9 Loader control valve... 50-65-13 Lubrication system... 20-40-15 Miscellaneous components adjustments 70-35-16 Power train testing... :. 70-35-10 Pressure control valve... ~... 50-65-9 Reverser............................. 40-35-6 Reverser clutch control valve........... 50-65-7 Rockshaft... 50-65-18 Selective control valve................ 50-65-17 Starting system... 30-30-5 Steering valve... 50-65-9 Transmission... 40-35-5 Transmission pump... 50-65-1 Speed control linkage................... 70-10-13 Stabilizer, backhoe, 9250................. 60-15-4 Stabilizer, backhoe, 9250-A............... 60-16-4 Stabilizer cylinder, backhoe, 9250... 50-62-6 Stabilizer cylinder, backhoe, 9250-A...................... 50-63-6 Starting system... 30-15-1 Starting motor........................... 30-15-1 Assem bly............................. 30-15-8 Steering valve... 50-25-1 Stop remote cylinder... 50-61-1 Storage, temporary... 10-10-1 Street pads, backhoe, 9250-A... 60-16-4 Swing cylinder, backhoe, 9250... 50-62-5 Swing cylinder, backhoe, 9250-A... 50-63-5 Swing frame, backhoe, 9250.............. 60-15-4 Swing linkage, backhoe, 9250-A... 60-16-5 Index 5 T Tapered pins, backhoe, 9250... 60-15-6 Tapered pins, backhoe, 9250-A.. '"... 60-16-7 Tem porary storage... 10-10-1 Thermostat... 20-20-4 Three-point hitch... 60-20-1 Three-point hitch adjustments............. 70-30-1 Timing gear train... 20-10-18 Transfer pump, fuel...................... 20-35-3 Transmission, collar shift... 40-10-1 Transmission-hydraulic filter... 50-55-1 Transmission pump... 50-5-3 Transmission pump relief valve... 50-55-4 V Valve, brake... 50-30-1 Valve, hydraulic pump... 50-10-4 Valve, lift check... 20-10-2 Valve, loader control... 50-35-1 Valve, oil filter relief... 50-55-1 Valve, oil pressure regulating............. 20-15-2 Valve, pressure control................... 50-20-1 Valve, reverser clutch control... 50-15-1 Valve, selective control................... 50-45-1 Valve, steering.......................... 50-25-1 Valve, transmission pump relief... 50-55-4 Valve, engine... 20-10-2 V-Packing and rod guide, backhoe, 9250........................ 50-62-7 V-Packing and rod guide, backhoe, 9250-A...................... 50-63-7 V-Packing and rod guide, loader... 50-60-4 W Water pump... 20-20-2 Wiring diagrams........................ 70-15-14 Wiring test............................. 70-15-18