Multiquip ST-45HRM manual ST45 Pressure Setting Sequence, To set maximum pump pressure

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ST-45 PUMP — MAINTENANCE (PUMP)

ST45 PRESSURE SETTING SEQUENCE

To set maximum pump pressure:

1.With the engine turned “OFF”, loosen the ¼” hydraulic hose attached to the compensator valve located on the top of the Main Delta Q Pump.

Figure 44. Compensator Valve

2.Loosen the jam nut located on the end of the compensator valve (Figure 44).

3.Turn the compensator adjustment nut (Figure 44) clockwise until tight. Tighten the ¼” hose leading to the compensator.

4.Start the engine and loosen the jam nut located on the maximum relief valve cartridge (Figure 45).

5.Run the engine at maximum RPM (2550) and turn the volume control knob counter-clockwiseto maximum volume position (Figure 45).

MAXIMUM RELIEF

VALVE CARTRIDGE

JAM NUT

MAIN

RELIEF VALVE

VOLUME

CONTROL

Figure 45. Hydraulic Drive Pump Manifold

6.On the electrical control panel, turn the pump control switch (Figure 22) and the test switch (Figure 31) to the “ON” position. Using an allen wrench, adjust the main relief valve (Figure 45) to 3500 PSI.The reading can be taken from the pumping pressure gauge (Figure 46).

7.Hold the main relief valve adjusting bolt with a wrench and tighten the jam nut. Using the test switch, double check the pressure reading to make sure the setting has not changed.

Figure 46. Pumping Pressure Gauge

8.Turn the engine off and loosen the hose from the compensator valve. Loosen the jam nut and turn the compensator adjustment nut (Figure 44) counter- clockwise ½ turn. Tighten the ¼” hydraulic hose.

9.Start engine and run at maximum RPM with volume control at maximum volume (fully counter-clockwise). Turn the pressure test switch (Figure 31) to the “ON” position. The pumping pressure gauge should now read 3300 PSI. It may be necessary to repeat the above steps to achieve the proper pressure settings. After the adjustment, make sure the compensator valve jam nut is locked tight.

MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04) — PAGE 47

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Contents Model ST-45HRM Proposition 65 Warning Heres HOW to GET Help Mayco ST-45HRM Structural Concrete Pump Multiquip INC Parts Ordering ProceduresWilmington Ave Carson, CA ST-45 Pump Pump Specifications ST-45 Pump SpecificationsST-45 Pump Engine Specifications Engine SpecificationsST-45 Structural Concrete Pump Dimensions ST-45 Pump DimensionsSeriously injured if you do not follow directions ST-45 Pump Safety Message Alert SymbolsAlways wear approved respiratory protection ST-45 Pump Safety Message Alert SymbolsNever operate the pump in an explosive General SafetyTowing Maintenance SafetyST-45 Pump Rules for Safe Operation TransportingEmergencies BatteryMachine Safety Decals ST-45 Pump Operation and Safety DecalsST-45 Pump Operation and Safety Decals Operation Hand Signals ST-45 Pump Important Hand SignalsConcrete Mix Design ST-45 Pump General InformationRegional Differences ST-45 Pump General InformationPumping Cycle ST-45 Pump HOW IT WorksMajor Pump Components ST-45 Pump Pump ComponentsST-45 Pump Pump Components ST-45 Pump Control BOX Components Initial Servicing ST-45 Pump Engine ComponentsNotremotely ST-45 Pump Operating ProceduresOperating Suggestions Getting the concrete to flow throughPriming the Pump and Delivery System with Slurry Pumping TipsAdmixtures Clearing Concrete Blockage Reverse Pumping ProcedureShuttle Tube Inspection Procedure Stop the pump.Switch off the engineChip the concrete out of the reducer with the pry bar Carefully knock the end of the hose away from the reducerNience Before Starting Read safety instructions at the begin- ning of manualST-45 Pump Inspection Fuel CheckHydraulic Oil ST-45 Pump InspectionEngine OIL Check Make sure pump/engine is placed on level groundRear Stabilizer Stand Hydraulic Oil Filler HoleStarting ST-45 Pump Initial START-UP ProcedureEmergency Stop Switch Ignition SwitchStrokes within 1 minute Control SwitchPressure Test Engine SpeedRunning Cooling FANCylinder Lubrication BOX ST-45 Pump Initial START-UP ProcedureOptional Radio Remote Control PumpTrailerVehicle Connection Recommended MaintenanceST-45 Pump -TOWING Guidelines Towing Applications ST-45 Pump -TOWING GuidelinesMatch the size of the tire ST-45 Pump -TRAILER Safety GuidelinesSuspension ST-45 Pump -TRAILER Safety GuidelinesTires/Wheels/Lug Nuts TiresWear/InflationStart all wheel lug nuts by hand ST-45 Pump -TRAILER Safety GuidelinesLug Nut Torque Requirements USE 2 Ball only ST-45 -TOWING InformationTowing Information Back the trailer up ST-45 -TOWING InformationBacking UP TrailerTail Lights Wiring Diagram ST-45 Pump Wiring Diagram Tail LightsCleaningthe Pump and Delivery System ST-45 Pump Maintenance PumpEngine Hatz Model 3M41 57HP Diesel ST-45 Pump Maintenance PumpHydraulic OIL System Maintenance Lubricate the hitch ball with ST-45 Pump Maintenance PumpBattery Maintenance Brake SystemTo set maximum pump pressure ST45 Pressure Setting SequenceChecking Accumulator Bladder Pressure Cleaningthe Lubrication BOXST45 Accumulator Circuit Pilot Relief Valve Cartridge Adjustment Size and type of aggregate Type of concrete being pumped Cylinder CUP Replacement ProcedureOil prior to installation Wear Ring installation Wear Plate and Ring Replacement ProcedureWear Plate Installation Install the two cylinder O rings Hopper Interior Assy, ItemExtended Storage Instructions Wheel BearingsPage Hydrauilc Hose Connections ST-45 Pump Hydraulic Hose ConnectionsST-45 Pump Hydraulic Hose Connections ST-45 Pump Hydraulic Hose Connections Manifold Ports ST-45 Manifold Port LocationsAppendix ST-45 Pump Concrete MIX Information Appendix ST-45 Pump Concrete MIX Information SlumpTest 1/3 Full Appendix ST-45 Pump Slumptest ProcedureEngine Troubleshooting ST-45 Pump Troubleshooting EngineHydraulic System Troubleshooting ST-45 Pump -TROUBLESHOOTING Hydraulic SystemST-45 Pump -TROUBLESHOOTING Electrical System Brake System Troubleshooting ST-45 Pump -TROUBLESHOOTING Brake SystemPage Items Found In the Items Number Column ST-45 Pump Explanation of Code in Remarks ColumnPart numbers on this Suggested ST-45 Suggested Spare PartsST-45 Structural Concrete Pump Shotcrete System Appendix ST-45 Pump Recommended Shotcrete SystemVibrator on the reducer by the pool improves pumpability REDUCER, 3x2.5x36 H-D EndsGeneral recommendations Material has Passedthroughthe Entire Hose Length Air passages cleanPart Name QTY Remarks ST-45 Pump Decal Placement TBD DECAL, Hopper Rexmixer ST-45 Pump Axle Assy Part Name QTY ST-45 Pump Brakeline Assy TBD NUT Lock Washer ST-45 Pump Hopper Assy REMIXER, Shaft ST-45 Pump Hopper Attachment Assy BOLT, HEX ST-45 Pump Hopper Attachment AssyST-45 Pump Hopper Interior Assy BOLT, HEX Head 1/2 NC X 1 1/4 NUT Lock 5/8ST-45 Pump Shuttle Cylinder Assy Thrust Washer Fuel and Hydraulic Tank Connections Assy ST-45 Pump Fuel and Hydraulictank Connections Assy ST-45 Pump Fuel and Hydraulictank Assy ST-45 Pump Fuel and Hydraulictank Assy ST-45 Pump Front Cover Assy ST-45 Pump Front Cover Assy ST-45 Pump Heat Exchanger Assy ST-45 Pump Heat Exchanger Assy ST-45 Pump Engine and Frame Assy ST-45 Pump Engine and Frame Assy ST-45 Pump -THROTTLE and Water Filter Assy Bracket ST-45 Pump Hydraulic Pump Assy ST-45 Pump Hydraulic Pump Assy ST-45 Pump Lubrication Pistons Assy ST-45 Pump Lubrication Pistons Assy Sistema Electrico Hatz Assy ST-45 Pump Electrical System Assy ST-45 Pump Accumulator Assy Accumulator 1 Gallon ST-45 Pump Manifold Assy Test Port ST-45 Pump Remixer Control Assy Valve Remix W/LEVER ST-45 Pump Battery Assy Battery Holder Frame Grease Points ST-45 Pump Lubrication PanelST-45 Pump Lubrication Panel ST-45 Pump -TAILLIGHT Assy Tail Light Assy ST-45 Pump Control BOX Interior Door Assy Relay , Small ST-45 Pump Control BOX Mounting Assy 492366 Screw HHC 5/16-18x1-1/2 EM510703 ST-45 Pump Control BOX Assy Tachometer ST-45 Pump Control BOX Doorwiring Diagram ST-45 Pump Control BOX Interiorwiring Diagram ST-45 Pump -TERMINAL Blockwiring Diagram ST-45 Pump Control BOX Electrical Schematic ST-45 Pump Control BOX Electrical Schematic TB1 Part ID Description Quantity ST-45 Hydraulic DiagramST-45 Optional Radio Control Freightpolicy Terms and Conditions of Sale PartsHydraulic Drive Models Mayco PumpwarrantyMechanical Drive Models Your Local Dealer is

ST-45HRM specifications

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