ST-45HRM CE CONCRETE PUMP— MAINTENANCE (PUMP)

CHANGINGTHE WEAR PLATE AND RING

Due to the swinging motion of the Nun-plate and the abrasive nature of concrete, it is normal for the cutting ring to wear on the side that shears through the concrete inside the hopper. If the wear ring and wear plate do not fully seat against each other the concrete slurry will pump into the hopper.This condition can be easily observed by the sudden change of the level of concrete inside the hopper during each stroke.

Wear Plate and Ring Replacement Procedure

1.Remove the two hydraulic hoses (Hopper Assy., Item 34) connected to the remix motor.Plug the ports with fittings(not provided) to prevent hydraulic hose leakage.

2.Remove the hopper discharge nipple (Hopper Interior Assembly, Item 21) and loosen sleeve seal. Inspect and replace if wear is excessive.

3.Remove the two tie rod nuts (Hopper Attachment, Item 19) and the four eyebolt nuts (Hopper Attachment, Item 22) securing the hopper to the pump frame.

4.Using an approved lifting device, remove the hopper (Hopper Assy, Item 1) using extreme care not to damage the hopper seal (Hopper Assy, Item 2).

5.Remove the four 1/2” 1-¼ “ bolts (Hopper Interior Assy, Item 43) that hold the shuttle tube to the nun-plate and remove shuttle tube (Hopper Interior Assy, Item 41).

Using two small pry bars remove the rubber energizer ring (Hopper Interior Assy, Item 13B), steel insert ring (Hopper Interior Assy, Item A) and wear ring (Hopper Interior Assy, Item 13).

The energizer ring and wear ring will

NOTE normally have concrete contamination holding them in position. It will be required to chip some of the concrete loose to better expose the energizer ring.

6.Clean out all concrete build up in and around the nun- plate area with a wire brush.

7.Inspect the wear components for indications of wear. The wear plate (Hopper Interior Assy, Item 52) has two wear surfaces. If it becomes necessary to replace, the plate can be reversed to the opposite side to expose a new flat surface. To replace or reverse the plate, remove the five allen head counter sink bolts.Then remove the two cylinder “O” rings and clean the entire back surface.

Wear Plate Installation

1.Install the two cylinder “O” rings (Hopper Interior Assy, Item 10).

2.Using silicon sealant, coat the circumference of the concrete cylinders, the back of the wear plate and around the five bolt holes. Next, install the wear plate and the five bolts. The bolts must all be equally snugged and tightened to ( 136-N-m (100 ft. lbs) each.

Wear Ring installation

1.Install the wear ring (Hopper Interior Assy, Item 13) into the nun plate.

2.Install the steel insert ring (Hopper Interior Assy, Item A) inside of the rubber energizer ring (Hopper Interior Assy, Item 13B).

3.Install the energizer ring assembly into the nun-plate.

After installing the above mentioned components the machine can be re-assembled by reversing steps 1 through 5 of the Wear Plate and Ring Replacement Procedure.

MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04) — PAGE 57

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Multiquip ST-45HRM CE Changingthe Wear Plate and Ring, Wear Plate and Ring Replacement Procedure, Wear Plate Installation
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ST-45HRM CE specifications

The Multiquip ST-45HRM CE is a robust and versatile machine designed for a variety of heavy-duty applications, particularly in construction and industrial settings. Known for its durability and efficiency, the ST-45HRM CE stands out due to its combination of advanced technology, user-friendly features, and powerful performance, making it an ideal choice for professionals seeking reliable equipment.

One of the main features of the ST-45HRM CE is its powerful engine. It is equipped with a high-performance diesel engine that provides exceptional reliability and fuel efficiency. This engine allows the machine to achieve high-performance levels while minimizing operational costs, making it a cost-effective solution for various jobs. Additionally, the engine meets stringent environmental regulations, ensuring compliance with the latest emission standards.

The ST-45HRM CE is designed with operator comfort and safety in mind. One of its key characteristics is the spacious and ergonomically designed operator platform that allows for easy access and enhanced visibility. The controls are intuitively placed, providing excellent maneuverability and reducing operator fatigue during long working hours. Moreover, safety features such as emergency shut-off switches and protective enclosures are built into the design, ensuring a safer working environment.

In terms of technology, the ST-45HRM CE is equipped with advanced hydraulic systems that enhance its lifting capabilities. This machine is capable of lifting loads up to 45 tons, making it suitable for heavy materials and equipment. The hydraulic system is designed for smooth operation, allowing for precise control and optimal performance in various applications, including lifting, transportation, and heavy-duty towing.

Maintenance is another consideration where the ST-45HRM CE excels. It features easy access points for routine checks and repairs, reducing downtime and operational costs associated with maintenance. The components are engineered for longevity, ensuring that the machine can withstand the rigors of continuous use in demanding environments.

Overall, the Multiquip ST-45HRM CE is a standout in its category, boasting an exceptional blend of power, efficiency, and user-centric design. With its advanced features, safety technologies, and ease of maintenance, it is ideal for professionals in construction, industrial lifting, and other heavy-duty applications, providing a reliable solution to meet their needs.
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