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

SETTING PRESSURE INTHE ACCUMULATOR CIRCUIT

1.Attach a 20.68 mPa (3,000 psi)test gauge (Mayco P/N 98016) to port G2 of the main manifold block (Figure 55).

4.Loosen the lock nut for the the accumulator circuit pilot relief valve cartridge (Figure 57), located at port G4. Using an allen wrench, turn the adjusting screw until pressure gauge reads 13.44 mPa (1,950 psi) and tighten lock nut. Turn the engine off and on several times to make the pressure continues to read 13.44 mPa (1,950 psi).

Figure 55. Accumulator Circuit Pressure Test Gauge

2.Loosen the lock nut on the unloading valve cartridge (Figure 56) and using an allen wrench, turn the adjusting screw clockwise until it is completely closed.

PILOT RELIEF

ADJUSTMENTVALVE CARTRIDGE SCREW

LOCK NUT

Figure 57. Pilot Relief Valve Cartridge Adjustment

5.Turn the unloading valve cartridge adjusting screw counter-clockwise until the pressure reaches 12.07 mPa (1,750 psi) on the accumulator pressure gauge (Figure 29). Start and stop the pump several times to make sure the accumulator circuit pressure is holding at 12.07 mPa (1,750 psi).

6.Tighten the lock nut on the unloading valve cartridge.Your accumulator circuit pressure should now be properly adjusted.

ADJUSTMENT

SCREW

UNLOADING

VALVE CARTRIDGE

LOCK NUT

Figure 56. Unloading Valve Cartridge Adjustment

3.Turn the pump control switch (Figure 22) to the “ON” position and run engine at 2,550 RPM.

MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04) — PAGE 55

Page 54 Page 56
Page 55
Image 55
Multiquip ST-45HRM CE manual Pilot Relief Valve Cartridge Adjustment
Page 54 Page 56

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.
Top Page Image Contents