Part of the New Holland Repair Manuals.
This is the full factory repair manual for the New Holland TR86, TR87 and TR88 twin rotor combine harvesters, the same service information a dealer technician works from. It covers the whole machine: the engine PTO and the separator clutch, the feeder, the twin rotor threshing and separation with the rotor drive and rotor gearboxes, the concaves, separator grates and discharge beater, the cleaning fan and cleaning shoe, the clean grain and filling system, the tailings system and the unloading system, the working hydraulics, the monitor system and the full electrical system with the wiring diagrams. Every section carries the specifications, the functional adjustments, the fault finding and the step-by-step overhaul procedures, so you can chase a threshing, feeder or electrical problem and put it right instead of guessing.
What's Inside This New Holland New Holland TR86 TR87 TR88 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General and Safety Information | General Service Instructions, Safety Precautions, Machine Specifications and Capacities, Standard Torques, Special Tools, Model Coverage TR86 TR87 TR88 | |
| Engine PTO and Separator Clutch | Engine Power Take-Off Drive, Separator Clutch and Belts, Main Drive Engagement, Description and Operation, Adjustment, Fault Diagnosis, Overhaul | |
| Feeder | Feeder House and Conveyor, Feed Beater, Stone Retarder, Header Drive and Coupling, Feeder Adjustment, Drive Belts, Fault Diagnosis, Overhaul | |
| Twin Rotor Threshing and Separation | Twin Rotors, Rotor Drive and Rotor Gearboxes, Rasp Bars, Concaves and Separator Grates, Discharge Beater and Grate, Rotor Speed, Functional Adjustment, Wear Parts, Overhaul | |
| Cleaning | Cleaning Fan and Airflow, Cleaning Shoe, Sieves and Chaffer, Grain-Loss Checks, Functional Adjustment, Fault Diagnosis, Overhaul | |
| Grain Handling and Unloading | Clean Grain and Filling System, Clean Grain Elevator, Tailings System and Returns, Grain Tank, Unloading System and Augers, Unloading Drive, Fault Diagnosis, Overhaul | |
| Hydraulic System | Working Hydraulics, Header Lift and Reel, Unloading and Steering Circuits, Pump and Valves, Pressure Testing, Fault Diagnosis, Overhaul | |
| Electrical System and Monitor | Wiring Diagrams, Starting and Charging Systems, Battery, Monitor System and Sensors, Lighting and Warning Systems, Switches, Fault Diagnosis | |
| Air Conditioning and Cab | Operator Cab, Air Conditioning and Heating, Compressor and Pressure Switches, Compressor Clutch, Controls and Instruments, Fault Diagnosis, Service |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All models | ||
| Threshing System | Twin Rotor threshing and separation | |
| Model Coverage | TR86, TR87, TR88 | |
| TR86, TR87 | ||
| A/C Low Pressure Safety Switch | 4 psi (0.27 bar) | |
| A/C High Pressure Safety Switch | 365 psi (24.8 bar) | |
| A/C Compressor Clutch Coil Resistance | 2.5 to 2.7 ohms | |
