LP122A Series/LP123 Repair Instructions

LP122A Series/LP123 - Repair Instructions

1.With a 30mm wrench, re- move the six (6) plugs (48) from the valve casing (43). Inspect the o-rings (48A) and replace if necessary.

Remove the complete valve assembly (46A) by thread- ing a 12mm bolt into the spring retainer and pulling straight out.



44A	44	45	48	47

2.To disassemble the valve, screw the bolt into the retainer until the valve plate (45) presses the valve seat (44) out of the spring retainer. Examine all parts and replace if necessary. If the seat doesn’t come out, use a valve puller to remove.

3.Remove the eight (8) hex nuts (49A) with a 19mm wrench. Tap the back of the manifold (43) with a rubber mallet to dislodge and slide off the studs.

5.If there are signs of oil leaking through the plunger oil seals, then replacment is neccessary.For LP122A & LP122A-4000, remove the plunger pipe (29B) before inspecting oil seals (31A & 33).

For the LP123 & LP122A-3100 dissassemble the gear end and push out the seals from the back of the pump.



36A	36	35	35A	35B	39	40	40	41	37
				(LP255 only)					(LP255 only)

4.Remove the seal sleeve (35) from the manifold and/or crank- case. Remove the pressure rings (39&36A), v-sleeves (40&36), support ring (41) and o-rings (35A and 35B in Lp255A only) from the manifold and seal sleeve, respectively. For LP255 only, remove support ring (37). Examine seals carefully and replace if worn. Clean all parts.




29E	29A	29B	29D	29C

6.Inspect surface of plunger pipe (29B) carefully. Remove any chemical or mineral deposits taking care not to damage the surface of the plunger. If plunger pipe is worn, remove the plunger bolt (29C) , plunger pipe (29B) and spacer (29E). Replace worn parts necessary. Note: Always use a new copper gasket (29) when repairing the plunger assembly.

LP122A-3100, LP122A Series, LP122A-4000, LP123 Series, LP255 Series specifications

The Giant LP122A-4000, LP255 Series, LP122A Series, LP123 Series, and LP122A-3100 are renowned for their advanced engineering and robust features tailored for various applications in industrial and commercial settings. These models showcase a blend of power, efficiency, and user-friendly design, making them highly regarded choices among professionals.

One of the key features of the Giant LP122A-4000 is its impressive performance capabilities. Engineered with a powerful motor, this model can handle heavy-duty tasks with ease, ensuring seamless operations. It is equipped with state-of-the-art technology that optimizes energy consumption, which not only improves performance but also reduces operational costs. The LP122A-4000 stands out for its exceptional durability, built to withstand the rigors of demanding environments.

The LP255 Series offers versatility with its range of applications. Designed for adaptability, these units can be modified to meet specific user requirements. With advanced control systems, the LP255 ensures precision and efficiency, providing users with the ability to manage operations tailored to their needs. Its compact design also makes it suitable for environments where space is a premium.

The LP122A Series is noted for its user-centric features. It includes intuitive controls and interfaces that enhance the overall user experience. Safety is a priority, with built-in mechanisms that ensure secure operation. The LP122A Series is not only functional but also emphasizes ease of use, allowing operators to focus on productivity without unnecessary distractions.

For those in need of a more streamlined option, the LP123 Series is an excellent choice. This model is engineered for easy maintenance and quick servicing, minimizing downtime and maximizing efficiency. With a robust construction, it offers reliability, making it ideal for continuous operations in various industries.

Lastly, the LP122A-3100 combines the best of both worlds—efficiency and power. Equipped with advanced performance technology, it excels in demanding applications, providing a seamless user experience. This model integrates advanced monitoring systems that allow users to track performance metrics in real-time, further enhancing operational efficiency.

In summary, the Giant LP122A-4000, LP255 Series, LP122A Series, LP123 Series, and LP122A-3100 exemplify innovation and reliability in the industry. Their features, including powerful motors, user-friendly controls, and versatile adaptations, make them indispensable tools for professionals looking to boost productivity while maintaining high standards of safety and efficiency.