Hitachi 1800 important safety instructions Repair, Required Tools, Disconnect the Lower

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Repair

Repair

Required Tools

•Set of socket wrenches

•Set of adjustable wrenches

•24 in. adjustable wrench

•Torque wrench

•Thread lubricant

•Anti-seize lubricant 222955

•Loctite® 2760™ or equivalent

Disconnect the Lower

1.Flush the pump, if possible. Stop the pump at the bottom of its stroke. Relieve the pressure, page 12.

2.Disconnect the air or hydraulic hose. Plug all hydraulic hoses immediately, to prevent contamina- tion of the hydraulic system.

3.Hold the fluid outlet fitting (AD) with a wrench to keep it from loosening while you disconnect the fluid hose. See FIG. 4.

CAUTION

Use at least two people when lifting, moving, or dis- connecting the pump. If disconnecting the lower, be sure to securely brace the pump, or have two people hold it while another disconnects it.

Before disconnecting the lower (102) from the motor (101), be sure to note the relative position of the pump's fluid outlet to the air or hydraulic inlet of the motor. If the motor does not require servicing, leave it attached to its mounting.

4.Unscrew the coupling nut (103) from the connecting rod adapter (105). Remove the coupling collars (104); do not to lose or drop them. See FIG. 4.

5.Hold the tie rod flats with a wrench to keep the rods (106) from turning. Unscrew the nuts (107). Remove the lower (102).

6.To service the lower, refer to manual 311825, sup- plied. To service the air or hydraulic motor, refer to the separate motor manual, supplied.

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311826B

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Contents Dura-FloPumps II 2 GContents Models Dura-Flo Pumps with NXT Air MotorsFirst Digit Fourth Digit Fifth DigitP15LCD, a P15LSB, aUHMWPE/2 Ptfe P15MCD, a P15MSB, aDura-Flo Pumps with Viscount Hydraulic Motors Lower Model, Packings MPa, bar psiFire and Explosion Hazard Moving Parts Hazard Installation Flush Before Using EquipmentMounting Accessories GroundingHydraulic Line Accessories Air Line AccessoriesFluid Line Accessories Typical Installation, Air-Powered Pumps Key VA YTypical Installation, Hydraulic-Powered Pumps Key AY T XLROperation Pressure Relief ProcedureStartup Shutdown Bleeder Valve and Wet-CupMaintenance Troubleshooting Problem Cause SolutionRequired Tools RepairDisconnect the Lower Reconnect the Lower Reconnect the LowerParts 101 105 106 104 103 108 102 107101 102 103 104 105 106 107 108 115 116 Collar Adapter WrenchParts 311826B Dimensions Motor Model Pump Model Kg lbNXT Model Mounting Hole LayoutsViscount NXT Model Fluid Outlet Pressure Technical DataPump Air or Hydraulic Oil Consumption Dura-Flo 1800 Pumps with NXT Model 3400 Air Motors Dura-Flo 1800 Pumps with NXT Model 6500 Air MotorsDura-Flo 2400 Pumps with NXT Model 3400 Air Motors Dura-Flo 2400 Pumps with NXT Model 6500 Air MotorsDura-Flo 2400 Pumps with Viscount Hydraulic Motors Dura-Flo 1800 Pumps with Viscount Hydraulic MotorsFluid Outlet Pressure Hydraulic Oil Consumption Graco Standard Warranty Graco Information

1800 specifications

The Hitachi 1800 series excavators represent a significant leap in construction and earthmoving technology, designed to enhance productivity while ensuring operator comfort and environmental sustainability. These excavators are emblematic of Hitachi's commitment to advancing machinery engineering, equipped with an array of features and technologies that optimize performance.

One of the standout characteristics of the Hitachi 1800 is its powerful yet fuel-efficient engine. The machine is equipped with a Tier 4 compliant engine, which meets stringent emission regulations while delivering increased power output. This leads to enhanced digging performance and better fuel economy, reducing operational costs for excavating contractors.

The hydraulic system of the Hitachi 1800 is another remarkable feature. It utilizes a closed-center load sensing system that automatically adjusts hydraulic flow based on the load being handled. This technology allows for precise control during operations, whether digging, lifting, or swinging, and improves overall operational efficiency. The responsiveness of the hydraulic system aids in increasing the speed and accuracy of work cycles.

Operator comfort is prioritized in the Hitachi 1800 with its ergonomically designed cab. It offers excellent visibility, reduced noise levels, and adjustable seating, which enhance the operator's experience during prolonged use. Advanced climate control systems ensure that operators remain comfortable in various environmental conditions. The intuitive control layout, combined with a multi-function joystick, allows operators to manage all functions with minimal effort.

Additionally, the Hitachi 1800 incorporates advanced telematics technology, which allows operators and fleet managers to monitor machine performance in real-time. This technology aids in predictive maintenance, helping reduce downtime and extend the life of the excavator.

The excavator’s durability is another core characteristic. It features a robust undercarriage designed to withstand harsh operating environments, and high-strength materials are used across the machine to enhance longevity and reliability.

In summary, the Hitachi 1800 series excavators combine powerful engines, advanced hydraulic systems, and operator-centric designs to provide a robust and efficient solution for construction and earthmoving projects. With their state-of-the-art technology and commitment to sustainability, they represent an excellent investment for professionals looking to enhance productivity and performance on the job site.
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