ST-45 PUMP — PUMP COMPONENTS
Figure 7 illustrates the location of the major components for the ST-45 Structural Concrete Pump. The function of each component is described below:
1. Tow Hitch Coupler – Requires a 2-inch ball hitch or a 3-inch pintle. Capable of towing 5,000 lbs.
2.Documentation Box – Contains engine and pump operation, parts and maintenance information.
3. Hydraulic OilTank/Cap– Remove cap to add hydraulic fluid. Fill with Shell Oil Tellus 68 or Mobil Oil DFE26 if level is low.
4.FuelTank/Cap – Fill with diesel fuel. Fuel tank (cell) holds approximately 20 gallons (88 liters). DO NOT top off fuel. Wipe up any spilled fuel immediately
5.Battery
6.Heat Exchanger – Reduces temperature of the hydraulic oil.The exchanger draws oil from the hydraulic tank through a filter and into the heat exchanger before allowing it to flow into the hydraulic system.
7.Lubrication Box – This box is empty when shipped from the factory. Please fill with 7 gallons ( 26.5 liters) of SAE motor oil for first time use. Also check the dual
8.Tires — This trailer uses two
9.Shuttle Cylinder – Under pressure, the shuttle cylinder shears concrete passing from the concrete cylinder to the delivery line durring the cycle phase. The Accumulator provides the pressure needed to ensure enough force is provided during cycle.
10.Pump End Jack Stand – Use this jack stand to level and support the rear end of the pump. NEVER deploy on
11.Hopper/Hood – Lift hood to fill. Concrete from a
12.Remixer Motor – Drives the remixer paddles inside the hopper. The motor direction is controled by the remixer control lever.
13.Lubrication Panel – This console allows for the remote lubrication of components on the pump.
14.Rear Running Lights – ALWAYS check and make sure both the right and left running lights are functioning correctly before towing the pump.
15. Accumulator – Stores hydraulic oil under pressure and releases it to the shuttle cylinder and provides the required pressure to activate the hydraulic system.
16. Remixer Control Lever – Controls the forward/reverse motion of the hopper remixer paddles.
17. Manifold – Aluminum block that controls the flow of hydraulic pressure to the various hydraulic motors and other components required to control the pump.
18. Hydraulic Pump – This unit incorporates an axial variable displacement hydraulic piston pump.
19. Throttle Control Knob – This is a variable speed type control. Turning the throttle lock (CCW) left unlocks the throttle allowing the throttle control cable to be pulled out to the desired position. Once the desired throttle position (speed) has been achieved, turning the throttle lock to the (CW) right locks it in place. Use the fine tune adjustment knob to fine tune the engine rpm's.
To place the engine in idle, press the top button inward all the way..
20. StrokeVolume Control Dial – Turns CW/CCW to increase or decrease the number of strokes per minute of the pump.
21. Control Box – Contains the mechanical and electrical components required to run the pump. See page 22 for components.
22. Tow End Jack Stand – Use this jack stand to level and support the tow end of the pump.
23. Pumping Pressure Gauge – Used to monitor pressure in the concrete cylinders and shuttle tube.
24. Accumulator Pressure Gauge– Used to monitor accumulator pressure. Pressure should read at least 1750 psi for correct pump operation.
25. Hydraulic Oil Sight Glass – Use to determine the amount of hydraulic oil remaining in tank. The sight glass also contains a temperature gauge for monitoring the temperature of the hydraulic oil.
26. Hopper Discharge Sleeve – Connect hoses or steel pipes to the discharge sleeve for pouring concrete.
MAYCO
