This comprehensive John Deere 1166, 1169H, 1174, 1177, 1177 Hydro/4, 1188, and 1188 Hydro/4 Combines Service Technical Manual (TM4452) provides detailed instructions and illustrations for repair and maintenance.

The manual is designed for both experienced mechanics and DIY enthusiasts, covering all aspects of these combine models. It features step-by-step instructions, high-quality exploded diagrams, and detailed illustrations to guide you through each repair process.

The manual includes information on various essential components and systems, including:

**Engine Repair:** Engine pulley, removal of 6466 and 6359 engines, cooling system, and more.
**Fuel System Repair:** Fuel system components, speed control, and engine shut-off components.
**Electrical Equipment Repair:** Connectors, electrical system components, low shaft speed monitor system, harvest performance monitor, electromagnetic transmission brake, starting motor, alternator, Dial-A-Matic, sidehill leveling system, and more.
**Power Train Repair:** Variable ground speed drive, Posi-Torq ground drive, clutch operating assembly, engine clutch, hydrostatic drive, transmission with differential, final drives, and more.
**Brakes, Rear Axle and Steering Repair:** Parking brake, brake operating assembly, foot brakes, hydrostatic steering, rear axle, and more.
**Hydraulic System Repair:** Hydraulic lines, dual and triple hydraulic pumps, mechanical and electro-magnetic control valves, hydraulic cylinders, reverser motor, hydrostatic reel drive, and more.
**Miscellaneous Repair:** Bearings and shafts, drive belts, and drive chains.
**Operators Platform with Cab Repair:** Cab ventilation system, safe handling of refrigerants, air conditioning system service, cab heating system, operators cab, platform control levers, steering column, and operator’s seat.
**Feeder House Repair:** Feeder house drive, feeder house, chain transmission, and hydraulic reverser.
**Separator and Cleaning Unit Repair:** Separator drive, beater, variable cylinder drive, cylinder drive reduction gear, threshing cylinder, concave, straw walkers, cross shaker, fan, cleaning shoe with sieves, and more.
**Elevators, Grain Tank and Unloading Augers Repair:** Tailings and clean grain auger and elevator.
**Special Equipment Repair:** Straw chopper countershaft, straw chopper, and straw spreader.
**Engine Cooling System Operation:** Cooling system.
**Fuel and Air Intake System Operation:** Air intake system and fuel system.
**Electrical System Operation and Tests:** General information, circuit plan, wiring diagram, wiring harnesses, circuit testing, checking individual components, checking electro-magnetic control valve, checking speed monitor system, checking harvest performance monitor, starting motor, alternator, checking Dial-A-Matic header height control, and more.
**Power Train Operation and Tests:** Posi-Torq ground drive, clutch operating assembly, clutch, hydrostatic ground speed drive, testing hydrostatic drive, and transmission.
**Brakes, Steering and Rear Axle Operation and Tests:** Full and partial disk brakes, hydrostatic steering, diagnosing malfunctions, testing hydrostatic steering, and more.
**Hydraulic System Operation and Tests:** Hydraulic circuits, mechanical and electro-magnetic control valves, and testing hydraulic system .
**Operators Platform and Cab Operation and Tests:** Cab ventilation, air conditioning system operation and tests, and more.

This manual is an invaluable resource for anyone working on John Deere 1166, 1169H, 1174, 1177, 1177 Hydro/4, 1188, and 1188 Hydro/4 Combines.

The John Deere 1166, 1169H, 1174, 1177, 1177 Hydro/4, 1188, and 1188 Hydro/4 combines were a series of high-performance harvesting machines produced by John Deere in the late 1970s and early 1980s. These combines were designed to efficiently and effectively harvest a variety of crops, including wheat, barley, oats, soybeans, and corn. They featured a range of innovative technologies and design elements that provided operators with enhanced productivity, comfort, and reliability.

The 1166 series combines were equipped with powerful engines, robust drivetrains, and advanced harvesting systems. The models differed in engine horsepower, cutting width, and available options. The 1166, for example, featured a 165-horsepower engine, while the 1188 boasted a 250-horsepower engine. The 1177 Hydro/4 featured a hydrostatic transmission, providing smooth and responsive performance. The 1169H was specifically designed for high-capacity harvesting with a larger grain tank and wider header. Regardless of the model, the 1166 series offered operators a range of features to optimize harvesting performance, including adjustable threshing and cleaning systems, and a wide selection of headers to accommodate various crops and field conditions.