Bearing and Air Gasket Removal

Service

Tools Required

•Torque wrench

•10 mm socket wrench

•Bearing puller

•O-ring pick

•Press, or block and mallet

Disassembly

Do not remove undamaged bearings.

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, always follow the Pres- sure Relief Procedure on page 11.

1.Relieve the pressure.

2.Remove the manifolds and disassemble the ball check valves as explained on page 18.

3.Remove the fluid covers and diaphragm assemblies as explained on page 19.

If you are removing only the diaphragm shaft bearing (19), skip step 4.

4.Disassemble the air valve as explained on page 16.

5.Using a 10 mm socket wrench, remove the screws

(25)holding the air covers (23) to the center housing

(1).See FIG. 14.

6.Remove the air cover gaskets (22). Always replace the gaskets with new ones.

7.Use a bearing puller to remove the diaphragm shaft bearings (19), air valve bearings (12) or pilot pin bearings (15). Do not remove undamaged bearings.

8.If you removed the diaphragm shaft bearings (19) reach into the center housing (1) with an o-ring pick and hook the u-cup packings (402), then pull them out of the housing. Inspect the packings. See FIG. 11.

Reassembly

1.If removed, install the shaft u-cup packings (402*) so the lips face out of the housing (1). See FIG. 11.

2.The bearings (12, 15, and 19) are tapered and can only be installed one way. Insert the bearings into the center housing (1), tapered end first. Using a press or a block and rubber mallet, press-fit the bearing so it is flush with the surface of the center housing.

3.Reassemble the air valve as explained on page 16.

4.Align the new air cover gasket (22) so the pilot pin (16) protruding from the center housing (1) fits through the proper hole (H) in the gasket.

5.Align the air cover (23) so the pilot pin (16) fits in the middle hole (M) of the three small holes near the center of the cover. Install the screws (25), handtight. Apply medium-strength (blue) Loctite® or equivalent to the threads of the screws (25). See FIG. 14. Using a 10 mm socket wrench, torque the screws oppositely and evenly to 130-150 in-lb (15-17 N•m).

6.Install the diaphragm assemblies and fluid covers as explained on page 19.

7.Reassemble the ball check valves and manifolds as explained on page 18.

311879F

FD2 1590 specifications

The Hitachi FD2 1590 is a noteworthy addition to the world of industrial and commercial machinery, designed to meet the evolving needs of businesses that require robust, dependable equipment for their heavy-duty operations. This machine is engineered for versatility, equipped to handle a variety of tasks efficiently.

One of the standout features of the Hitachi FD2 1590 is its powerful engine, which delivers impressive torque and horsepower. This allows the equipment to perform effectively in challenging conditions, providing the necessary force to tackle tough terrains and heavy loads. The fuel efficiency of the engine also contributes to reduced operational costs, making it a cost-effective solution for businesses.

The FD2 1590 embraces advanced technologies that enhance its operational capabilities. Among these technologies are sophisticated hydraulic systems that allow for smooth operation and precise control. This ensures that the machine can carry out tasks such as lifting, moving, and digging with greater accuracy and ease. The hydraulic system is designed for quick response times, enabling operators to navigate their workload efficiently.

Durability is a hallmark of the Hitachi FD2 1590, as it is constructed with high-quality materials that withstand the rigors of daily use. The robust frame and components are designed to resist wear and tear, minimizing maintenance needs and extending the lifespan of the equipment. This reliability is crucial for businesses that depend on their machinery for consistent performance.

Operator comfort and safety are also key considerations in the design of the FD2 1590. The operator's cabin is spacious and ergonomically designed, providing easy access to controls and excellent visibility of the work area. Safety features such as reinforced structures, emergency shut-off systems, and stability controls further enhance the protection of both the operator and the machine.

In terms of technological integration, the Hitachi FD2 1590 is compatible with various monitoring systems that streamline operations. These systems offer data analytics capabilities that allow operators to track performance metrics, fuel consumption, and maintenance schedules in real-time. This connectivity not only optimizes machine efficiency but also informs better decision-making for operational improvements.

In summary, the Hitachi FD2 1590 is a powerful, durable, and technologically advanced machine, ideal for heavy-duty applications. Its performance capabilities, alongside its operator-friendly design and safety features, make it a valuable asset for any business looking to enhance its operational efficiency.

Hitachi FD2 1590 important safety instructions Bearing and Air Gasket Removal

Models: FD2 1590