This comprehensive parts list manual for the Genie GTH-644, GTH-842, and GTH-844 telescopic handlers covers a wide range of components, providing detailed information to assist with maintenance and repair operations. The manual begins with a guide on how to interpret your serial number, followed by a list of stocked parts and instructions on how to order them. It also includes a dedicated service parts fax order form for convenient ordering. The manual then delves into detailed component breakdowns, starting with decals for identification and moving on to the drive chassis components, including the power train assembly, drive shaft assembly, fuel tank assembly, battery box assembly, general assembly, engine enclosure assembly, and more. The transmission is covered next, with detailed breakdowns of components like the transmission converter housing assembly, transmission case and plate assembly, transmission torque converter assembly, transmission gear assembly, transmission pump drive assembly, transmission charging pump assembly, transmission reverse idler assembly, transmission forward and reverse shaft assembly, transmission third shaft assembly, transmission first and second shaft assembly, transmission output shaft assembly, transmission control assembly, transmission modulation valve assembly, and transmission drive plate assembly. The manual then proceeds to cover the front and rear axle components, including axle gear box and covers, differential assembly, steering assembly, trunnion mount assembly, service brakes and parking brakes, disc brake assembly, steering arm assembly, and steering cylinder assembly. Engine components are also covered in detail, with separate sections for JD-4045, Deutz BF42012, Perkins 1104C Tier 2 and Tier 3 engines, and their respective exhaust and air cleaner assemblies. The cab components are thoroughly documented, including the operator's compartment assembly, foot brake assembly, accelerator assembly, instrument panel assembly, and the 4-way controller assembly. The boom components are illustrated in depth, with numerous views showcasing the assembly and its various parts. The manual further provides a detailed breakdown of hydraulic hoses and fittings for each circuit, including pump, oil reservoir, lift-tilt, boom, 4-way controller, steering, sway, rear lock-up, parking brake, pressure checks, brake-differential lock, oil cooler, and fuel circuits. The hydraulic components section delves into the lift cylinder, tilt cylinder, boom cylinder, sway-rear lock-up cylinder, motion valves, dual pilot check valve, orbital assembly, selector valve, return filter assembly, control block assembly, main valve assembly, hydraulic pump assembly, electric valves, boom-activated rear-lock valve, parking brake and differential lock valve, and the rear lock-up manifold. The manual concludes with a section on accessories, including the fully enclosed cab assembly, fork frame rotate assembly, rotate cylinder assembly, dual pilot check valve, circuit for fork rotate, circuit for auxiliary hydraulics, road and work lights, light harnesses, HVAC components, condenser assembly, and fender assembly. Finally, the manual provides comprehensive indices for part numbers, part descriptions, cross references, and fittings cross references. This ensures quick and easy access to the information you need.

The Genie GTH-644, GTH-842, and GTH-844 are powerful and versatile telescopic handlers designed for a wide range of applications. These machines are built for heavy lifting and material handling, showcasing impressive lifting capacities and reach capabilities. The GTH-644 boasts a maximum lift capacity of 6,400 lbs (2,900 kg) and a maximum lift height of 44 feet (13.4 m), while the GTH-842 and GTH-844 offer a higher lifting capacity of 8,400 lbs (3,800 kg) with lift heights reaching 42 feet (12.8 m) and 44 feet (13.4 m) respectively. This makes them ideal for a variety of tasks including construction, agriculture, landscaping, and industrial operations. Their telescopic boom allows for precise placement of materials in tight spaces, while their robust construction ensures durability and reliability in demanding environments. The Genie GTH series telescopic handlers are equipped with a range of features that enhance operator comfort, safety, and productivity. They feature a spacious and comfortable cab with excellent visibility and intuitive controls, minimizing operator fatigue during extended shifts. Advanced safety features include load sensing systems, boom overload protection, and an automatic leveling system that ensures safe operation on uneven terrain. These machines are also equipped with powerful engines and efficient hydraulic systems, providing optimal performance and fuel economy. Their compact design and maneuverability allow for easy operation in confined spaces, making them well-suited for both indoor and outdoor applications. The Genie GTH-644, GTH-842, and GTH-844 are reliable and efficient telescopic handlers that provide a powerful solution for a range of material handling needs.