Hitachi 312350E important safety instructions Disconnecting Reciprocator and Displacement Pump

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Service

Disconnecting Reciprocator and Displacement Pump

See FIG. 6 and Displacement Pump Parts, page 18.

36, 37

32
46	43		35
	43


(hidden
from view)
ti10602a		ti10610a	204
		ti10610a	204
			107
			107

1.Flush pump if possible and stop it with displacement rod in lowest position.

2.Relieve pressure, page 7.

3.Disconnect outlet hose from displacement pump.

4.Slowly loosen hydraulic supply (60) and return (5) fittings to relieve any pressure. Then remove hoses.

5.Install plugs on tube fittings and in hose ends.

6.Check o-rings (5a and 60a) on fittings and replace them if they are worn or damaged.

See FIG. 4 and Reciprocator parts drawing, page 18.

7.Using a strap wrench on displacement cylinder (109) screw it out of motor housing (43) and slide it down as far as it will go.

8.Pull connecting rod (35) down as far as it will go. Remove pin (204).

9.Unscrew connecting rod (107) to remove pump.

FIG. 6

312350E

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Contents Dyna-Star Table of ContentsFire and Explosion Hazard Moving Parts Hazard Key InstallationTypical Installation of a Suction Feed System Limit Fluid Flow to Reciprocator Pump Accessories Hydraulic LinesHydraulic Power Supply Pump Outlet Drain ValveGrounding the Pump GroundingOperation Pressure Relief Procedure Before Starting PumpMaximum Working Pressures Starting PumpIf the Pump Leaks at the Fluid Fittings ShutdownRelieve pressure, page 7. Check TroubleshootingProblem Cause Solution Relieve pressure, ServiceReplacing Throat Seals Disconnecting Reciprocator and Displacement Pump Drain Oil Out of Reciprocator Reciprocator RepairAllow 24 hours to cure before operating reciprocator Assembly a When reinstalling cylinder 25, , be sure Disassembly Displacement Pump RepairAssembled / Cutaway View 60a Reciprocator PartsPart No. Description Qty Displacement Pump PartsReciprocator Parts 400# Drum Length Part No. Description Qty Pump PartsModel 120# Drum Length Part No. Description QtyTypical Fluid Outlet Pressure Technical DataDimensions and Mounting Hole Layout 312350E Graco Information Graco Standard Warranty

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.