John Deere Combines TM4387 Technical Service Repair Workshop Manual PDF VEHICLE/EQUIPMENT INTRODUCTION: The John Deere 9000-series and 10000-series combines represent a golden era of combine harvester engineering from the worlds largest agricultural equipment manufacturer. John Deere, founded in 1837 and headquartered in Moline, Illinois, has been the dominant force in North American farming equipment for well over a century. The combine models covered in this technical manual TM4387 span multiple generations of John Deere harvesting technology, from the classic 900-series models of the late 1970s and 1980s to the advanced 1000-series machines of the 1990s. These massive self-propelled harvesting machines represent the pinnacle of agricultural engineering, combining complex mechanical, hydraulic, and electronic systems to efficiently cut, thresh, separate, and clean grain crops including corn, wheat, soybeans, barley, and other field crops. The 900-series models such as the 932, 942, 952, 955, 965, 968, 975, 985 and the 1000-series models including the 1065, 1068, 1072, 1075, and 1085 were powered by John Deere diesel engines in their inline 4-cylinder and 6-cylinder configurations including engines 3179, 4239, 6359, and 6466. The hydraulic and hydrostatic drive systems provided the variable ground speed control essential for matching harvest speed to crop conditions, while the sophisticated separator and cleaning systems maximized grain recovery and minimized loss. HarvestTrak combine monitor systems added the first generation of electronic yield monitoring and display technology for informed field management. SERVICE AND REPAIR SCOPE: - Complete machine specifications and special tool requirements - Pre-delivery inspection, delivery service, and after-sales inspection procedures - Lubrication charts and periodic service interval schedules - Engine and combine tune-up adjustments from the operators platform - Combine separation adjustment for various crop types - Cylinder head, valve, camshaft, and balancer shaft service for engines 3179, 4239, 6359, and 6466 - Cylinder block, liner, piston, and connecting rod overhaul - Crankshaft, main bearing, and flywheel inspection and replacement - Lubrication system diagnosis and oil pump service - Cooling system overhaul including radiator, fan drive, and water pump - Timing gear train inspection and replacement procedures - Air intake system service and turbocharger maintenance - Fuel system service including Roto Diesel, Roosa Master, and Robert Bosch fuel injection pumps - Fuel injection nozzle testing and calibration for KDEL and Bosch systems - Speed control linkage adjustment - Electrical system malfunction diagnosis procedures - Starting motor service for Bosch and John Deere types - Alternator repair for Bosch and Delcotron types - Wiring harness and wiring diagram reference - Electrical leveling control system for sidehill combines (auto-level on contours) - HarvestTrak combine monitor functional description and repair - Variable ground speed drive service - Posi-Torq ground drive system overhaul - Engine clutch inspection and adjustment for all model groups - Reverser clutch, control, and linkage service - Hydrostatic drive system overhaul - Front axle and rear axle service - Track system maintenance if equipped - Parking brake and foot brake service - Complete hydraulic system diagnosis and repair - Header drive and feeder house service - Separator drum and rotor overhaul - Cleaning shoe and fan adjustment procedures - Grain tank and unloading auger service TECHNICAL SPECIFICATIONS: - Manufacturer: John Deere Company, Moline, Illinois - Manual: Technical Manual TM4387 - Models covered: - 900-series: 932, 942, 952, 955, 965-H, 968-H, 975, 975 Hydro/4, 985, 985 Hydro/4 - 1000-series: 1065, 1068-H, 1072, 1075, 1075 Hydro/4, 1085, 1085 Hydro/4 - Engine families: John Deere 3179, 4239, 6359, 6466 diesel engines - Fuel injection systems: Roto Diesel, Roosa Master, Robert Bosch - Drive systems: Variable ground speed, Posi-Torq, Hydrostatic - Transmission: Manual, Hydro/4 (hydrostatic 4WD) - Electrical: 12-volt system with Bosch and Delco components - Monitor: HarvestTrak combine monitor system - Hydraulic: Open-center hydraulic system with multi-spool control valves DIAGNOSTIC INFORMATION: - Engine fail to reach rated RPM: injection pump delivery test, nozzle spray pattern check, air filter restriction, turbo boost measurement - Poor threshing performance: cylinder speed verification, concave clearance adjustment, rotor wear inspection - Excessive grain loss at header: reel speed to ground speed ratio, knife section condition, header height control calibration - Dirty grain sample: cleaning fan speed adjustment, sieve opening calibration, chaffer louver setting - Grain tank loss: separator RPM check, concave and cage bar wear, cleaning shoe fan volume - Header drive issues: belt tension verification, drive chain wear, gearbox oil level - Hydrostatic drive performance decline: charge pressure test, pump and motor case drain test, drive belt condition - Electrical faults: wiring harness continuity testing, ground connection verification, component resistance measurement - HarvestTrak monitor errors: sensor calibration check, display module diagnostic mode, wiring harness inspection Hydraulic cylinder drift: cylinder seal integrity test, control valve spool leak, hose and fitting inspection - Transmission clutch slip: clutch pack wear inspection, hydraulic pressure test, oil temperature check ILLUSTRATIONS AND DIAGRAMS INCLUDED: - Complete engine sectional drawings with oil galleries and coolant passages - Fuel injection pump cross-sections for all pump types covered - Engine wiring diagrams with component locations - Wiring harness routing and connector pin-out charts (pre and post serial 041201) - Hydrostatic drive system component layout - Hydraulic system schematic with multi-spool valve arrangement - Separator drum and rotor assembly exploded views - Cleaning shoe and fan assembly component drawings - Header drive component layout and belt routing diagrams - HarvestTrak monitor wiring and sensor location diagrams - Electrical leveling control system component arrangements for sidehill combines - Clutch pack arrangement diagrams for Posi-Torq and hydrostatic transmissions - Torque specification charts with fastener identification COMPATIBILITY: - John Deere combine models: 932, 942, 952, 955, 965-H, 968-H, 975, 975 Hydro/4, 985, 985 Hydro/4, 1065, 1068-H, 1072, 1075, 1075 Hydro/4, 1085, 1085 Hydro/4 - Engine types: 3179, 4239, 6359, 6466 John Deere diesel - Covers modified electrical equipment from serial number 041201 - Includes HarvestTrak combine monitor service information - Includes sidehill combine electrical leveling control system info - File format: Searchable PDF document - Language: English - Delivery: Instant digital download - Access: Download anytime after purchase - All pages are fully printable - Compatible with Windows, Mac, and Linux operating systems - Requires Adobe Reader or compatible PDF viewer FILE PROPERTIES: - Format: Searchable PDF - Language: English - Delivery: Instant digital download - Access: Download anytime after purchase - Printable: Yes, all pages - Zoom capable for detailed diagram viewing