Displacement Pump Repair

Displacement Pump Repair

Disassembly

See FIG. 13 for steps 1-10, except where noted.

• Be sure you have all necessary parts on hand before you start. If using a repair kit, use all parts in the kit for the best results.

•Displacement Pump Repair Kit 241623 is avail- able. Parts included in the kit are marked with a dagger (†) symbol in the parts drawing and list, page 20.

1.If possible, flush pump. Relieve pressure, page 7.

2.Follow instruction for Disconnecting the Recipro- cator and Displacement Pump, page 11.

CAUTION

To avoid damaging shovel tube, do not use slots in tube to tighten or loosen tube.

3.Clamp pump in vise.

4.Use strap wrench to screw shovel tube (117) off pump cylinder (109).

5.Use wrench to screw shovel (116) off of shovel rod

(108).

6.Use strap wrench on pump cylinder (109) to screw it out of extension tube (114). Screw tube connector

(113)out of pump cylinder. Remove bearing (111†) and seal (112†).

7.Screw the shovel rod (108) out of the piston (101). Remove lower ball (106†). Screw piston out of extension rod (107). Remove upper ball (106†), retaining washer (103) and seal (104†).

8.Clean all the parts in a compatible solvent and inspect them for wear or damage. Use all parts in the repair kit, replace other parts as necessary.

9.Generously lubricate all parts with light, water-resis- tant grease and reassemble pump. See provided notes on FIG. 13 for torque values.

To reduce risk of static sparking, be sure to recon- nect ground wire before operating pump.

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312350E

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Hitachi 312350E important safety instructions Displacement Pump Repair, Disassembly
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312350E specifications

The Hitachi 312350E is a cutting-edge excavator designed for heavy-duty applications in the construction and mining industries. This powerful machine stands out due to its robust design and advanced technological features that enhance productivity, efficiency, and operator comfort.

One of the key characteristics of the Hitachi 312350E is its powerful engine, which delivers exceptional performance while adhering to strict emissions regulations. The high-output engine ensures that the excavator can handle demanding tasks with ease, whether it's digging, lifting, or moving heavy materials. Coupled with a precise hydraulic system, the machine provides smooth and responsive control, allowing operators to perform operations more effectively.

In terms of design, the Hitachi 312350E features a spacious and ergonomic cab that prioritizes operator comfort. The well-designed layout includes adjustable seating, intuitive controls, and excellent visibility, which significantly reduces fatigue during long working hours. The advanced air conditioning system and noise-reducing materials contribute further to a pleasant working environment.

The 312350E is equipped with several advanced technologies that enhance its operational capabilities. Among these features is the Intelligent Machine Control system, which allows for automated digging and grading. This technology increases precision, reduces material waste, and ensures optimal results in various tasks. Furthermore, the machine’s onboard diagnostic system provides real-time insights, helping operators manage maintenance and reduce downtime.

Safety is also a top priority with the Hitachi 312350E. The excavator comes with several protective features such as reinforced structures, a ROPS/FOPS-certified cab, and advanced lighting systems for visibility in low-light conditions. These attributes make it suitable for various job sites, whether urban, rural, or construction-focused.

Finally, the Hitachi 312350E boasts impressive fuel efficiency, which not only reduces operational costs but also minimizes environmental impact. Its design emphasizes sustainability without compromising on performance, making it an ideal choice for contractors looking to balance productivity with environmental responsibility.

Overall, the Hitachi 312350E is a powerful, efficient, and user-friendly excavator that meets the rigors of modern construction and excavation applications. With its blend of advanced technology, comfort, and safety features, it stands as a testament to Hitachi's commitment to quality and innovation in heavy machinery.
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