7.For LP122A & LP122A-4000 pumps, oil seal replacement can be accomplished by pull- ing the retainer forward out of the crankcase. The o-ring around the outside of the re- tainer should be replaced and lubricated with a light film of

oil.

8.The back-up seal (33) can be pried out of the back of the retainer (32) with a small screwdriver. To replace with new seal, lubricate edges of new seal, then squeeze out- side edges of seal, forcing the seal to collapse into a figure 8. Tuck the two outside edges of the figure 8 into the rear of the retainer, making sure that the inner lip of the seal faces the oil. The seal may now be pressed firmly into place.

9.The front oil seal (31A) can now be removed by inserting a screwdriver through the rear of the retainer and tapping the seal out through the front of the retainer. Remove any ex- cess old loc-tite from retainer. To replace oil seal, apply a light film of loc-tite around outside edges of seal. Tap seal firmly into the retainer with a wooden dowel making certain that the spring side of the seal is installed first and that the seal sits squarely in the re- tainer.

TO REASSEMBLE PROCEED AS FOLLOWS:

10.For LP122A & LP122A-4000 pumps, generously lubricate the inside of the oil seals (31A &

33)and o-ring (32A). Next, place the seal retainer, complete (31) over the steel plunger base seat firmly into the crankcase. Replace the flinger (30).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29E

29A

29B

29D

29C

 

 

 

 

 

 

 

 

 

 

11.If previously disassembled thoroughly clean all exposed surfaces on the spacer (29E) and all exposed threads on the plunger bolt (29C) and the steel plunger base (25). Threads MUST be free of old loc-tite and any other material such as oil, grease, etc. This is necessary to ensure proper curing of new loc-tite. Giant recommends cleaning the threads with acetone or other suitable cleaner. Reassemble plunger assembly parts (29A, 29B, & 29E) using a new copper gasket (29D) and the cleaned plunger bolt (29C). Slide the bolt through the center of the four (4) pieces so that the threaded end is exposed. Apply several drops of loc-tite 243 (or equivalent) adhesive to the threads. Thread into steel plunger base and tighten to 26 ft.-lbs. BE CERTAIN ALL PARTS ARE CENTERED WITH THE BOLT!

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Giant LP122A-3100, LP255 Series, LP123 Series, LP122A-4000, LP122A Series service manual To Reassemble Proceed AS Follows
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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.
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