Reciprocator Repair

10.Clean all sealant from threads of any part you are reusing. Apply Loctite® 242 or Perma-Loc®115 thread sealant to first two or three internal threads of valve assembly (31).

If you removed capscrew (51) apply thread sealant to first two or three internal threads of valve stop (26). Apply primer to external threads of valve sleeve (29). Let dry for three or four minutes. Assemble. Remove excess sealant.

Allow 24 hours to cure before operating reciprocator.

11.Remove o-ring (13*) from bottom of spool valve (31) and replace it with a new o-ring.

12.Use a spanner wrench to screw piston (22) onto displacement rod (34). Torque to 40 to 48 ft-lb (54 to 65 N.m).

See FIG. 10 for steps 13-16.

13.Lay Assembly A and Assembly B on work bench.

14.Slide Assembly B in into center of tool (D), Part No. 189305. Align upper detent holes (C) of yoke (9) with center line of tool (D).

15.Insert spring (6) and one ball (7) into valve stop (26) of Assembly A. Tilt valve stop and start guiding it into tool (D), making sure ball is sliding into rounded slot in tool (D). Place other ball at the other end of spring and push it in with your thumb while rotating valve stop (26) until spring is horizontal and balls are in place. Continue holding this assembly together.

16.Slide valve stop assembly down into tool. Make sure balls (7) snap into upper set of holes (C) in yoke (9) and curved ends of guide clamp have engaged valve sleeve (29) groove. Slide tool (D) back over rod (12) to remove it.

Assembly A

26

 

51

6 7

31

12

29 9

C D

ti10606a

Assembly B

FIG. 10

14

312350E

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Image 14
Hitachi 312350E important safety instructions Assembly a

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.

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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.