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OPERATIONS & PARTS MANUAL
SERIES
MODEL ST-45HRM
STRUCTURAL CONCRETE PUMP
(HATZ DIESEL ENGINE)
FINAL REVISION
Revision #4 (07/16/04)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALL TIMES.
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Proposition 65 Warning PAGE 2 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04)
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HERE'S HOW TO GET HELP HERE'S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING MULTIQUIP CORPORATE OFFICE 18910 Wilmington Ave. 800-421-1244 Carson, CA 90746 FAX: 310-537-3927 Email: mq@multiquip.com Internet: www.multiquip.com PARTS DEPARTMENT 800-427-1244 FAX: 800-672-7877 310-537-3700 FAX: 310-637-3284 MAYCO PARTS 800-306-2926 FAX: 800-672-7877 310-537-3700 FAX: 310-637-3284 SERVICE DEPARTMENT 800-421-1244 FAX: 310-537-4259 310-537-3700 TECHNICAL ASSISTANCE 800-478
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TABLE OF CONTENTS PARTS ILLUSTRATIONS MAYCO ST-45HRM Explanation Of Code In Remarks Column ..............64 STRUCTURAL CONCRETE Suggested Spare Parts ...........................................65 PUMP Appendix — Recommended Proposition 65 Warning .............................................2 Shotcrete System ............................... 66 Here’s how To Get Help.............................................3 Appendix — Recommended Table of Contents ............................................
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PARTS ORDERING PROCEDURES When ordering parts, please supply the following information: ❒ ❒❒❒ ❒ Dealer account number ❒ ❒❒❒ ❒ Dealer name and address ❒❒ ❒❒❒ Shipping address (if different than billing address) ❒❒ ❒❒❒ Return fax number ❒❒❒ Applicable model number ❒❒ ❒❒❒ Quantity, part number and description of each part ❒❒ ❒ ❒❒❒ ❒ Specify preferred method of shipment: ✓ FedEx or UPS Ground Note: Unless otherwise indicated by customer, all ✓ FedEx or UPS Second Day or Third Day orders are treated
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ST-45 PUMP — PUMP SPECIFICATIONS Table 1. ST-45 Pump Specifications Pn umping Method Reciprocating Pisto P* umping Rate Up to 45 cu. yds. per hour M) aximum Aggregate Size 1-1/2 in. minus (38mm V) ertical Pumping Height Up to Excess of 250 ft. (76m H* orizontal Pumping Distance 1000 ft. (305m) C) ylinder Lubrication Box Capacity 7 Gallons (26.5 Liters H) ydraulic Fluid Capacity 58 Gallons (219 Liters F) uel Tank Capacity 20 Gallons (76 Liters Hr opper Capacity 10 cu. ft. with optional fwd/rev
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ST-45 PUMP — ENGINE SPECIFICATIONS Table 2. Engine Specifications ME odel HATZ 3M41 57HP DIESEL ENGIN 4.02 in. x 4.13 in. Bore X Stroke (102 x 105 mm) C7 ompression Ratio 18. D) isplacement 157 cu. (2,573 cc Lube Oil Capacity 9.1 qt. / 5.4 qt. Max/Min (8.6 L / 5.1 L) Engine Engine Speed 875 rpm ±100 Full Idle B) attery Type 12 V (88/143 Ah SAE 10W-30 (Oil Grade) Engine Lubrication SG or SF (Service Class) St tarting Method Electric Star D) ry Net Weight 562 lbs (255 kg MAYCO ST-45HRM PUMP — OPE
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ST-45 PUMP — DIMENSIONS TABLE 3. DIMENSIONS RS EF. DIMENSION A) 45 in. (114.3 cm. B) 162 in. (411.5 cm. C) 24 in. (61 cm. D) 73 in. (185.4 cm. E) 68 in. (172.2 cm. Figure 1. ST-45 Structural Concrete Pump Dimensions PAGE 8 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04)
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ST-45 PUMP — SAFETY MESSAGE ALERT SYMBOLS HAZARD SYMBOLS FOR YOUR SAFETY AND THE SAFETY OF OTHERS! Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the Safety Lethal Exhaust Gases Messages and Operating Instructions could result in injury to yourself and others. Diesel engine exhaust gases contain poisonous carbon monoxide. This gas is colorless and This Owner's Manual has been odorless, and can cause death if inhaled. developed t
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ST-45 PUMP — SAFETY MESSAGE ALERT SYMBOLS Accidental Starting Respiratory Hazard ALWAYS place the ON/OFF switch in the OFF position. NEVER perform maintenance on the ALWAYS wear approved respiratory unit with the ignition key in the ON position. protection. Over Speed Conditions Sight and Hearing hazard NEVER tamper with the factory settings of the engine governor or settings. Personal injury ALWAYS wear approved eye and and damage to the engine or equipment can hearing protection. result if op
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ST-45 PUMP — RULES FOR SAFE OPERATION ■ Whenever necessary, replace nameplate, operation and CAUTION: safety decals when they become difficult read. Failure to follow instructions in this manual may ■ Manufacture does not assume responsibility for any accident lead to serious injury or even death! This due to equipment modifications. equipment is to be operated by trained and ■ NEVER use accessories or attachments, which are not qualified personnel only! This equipment is recommended by Multiqu
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ST-45 PUMP — RULES FOR SAFE OPERATION ■ ALWAYS remove the ignition key when leaving the pump Transporting ■ ALWAYS shutdown engine before transporting the pump. unattended. ■ Tighten fuel tank cap securely and close fuel valve to prevent ■ ALWAYS block the wheels on the unit when using on a fuel from spilling. slope. ■ Drain fuel when transporting pump over long distances or ■ ALWAYS maintain this equipment in a safe operating bad roads. condition at all times. ■ ALWAYS stop the engine before s
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ST-45 PUMP — RULES FOR SAFE OPERATION Battery Emergencies The battery contains acids that can cause injury to the eyes and ■ ALWAYS know the location of the nearest fire extinguisher. skin. T o avoid eye irritation, always wear safety glasses. Use well insulated gloves when picking up the battery. Use the following guidelines when handling the battery: 1. DO NOT drop the battery. There is the possibility of risk that the ■ ALWAYS know the location of the nearest and first aid kit. battery may
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ST-45 PUMP — OPERATION AND SAFETY DECALS Machine Safety Decals The ST-45 structural concrete pump is equipped with a number of safety decals. These decals are provided for operator safety and maintenance information. Figure 1 below illustrates these decals as they appear on the machine. Should any of these decals become unreadable, replacements can be obtained from your dealer. Figure 2. ST-45 Operation and Safety Decals PAGE 14 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/
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ST-45 PUMP — OPERATION AND SAFETY DECALS Figure 3. ST-45 Operation and Safety Decals MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04) — PAGE 15
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ST-45 PUMP — IMPORTANT HAND SIGNALS Figure 1 display's the basic hand signals commonly used in concrete pumping operations. Figure 4 Operation Hand Signals PAGE 16 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04)
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ST-45 PUMP — GENERAL INFORMATION Concrete Mix Design There are four ways in which this seal can be lost: Mix design is most important to achieve maximum pumpability. 1. By pumping excessively wet mixes which do not have Pumpability is affected by, among other factors, the type and enough cohesion to hold together. gradation of aggregate used. Natural aggregates make a more 2. By pumping harsh undersanded concrete with poorly graded workable mix and pump more readily than crushed aggregates. agg
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ST-45 PUMP — GENERAL INFORMATION 5. The proper amount of water to make a workable slump and Regional Differences plasticize the mix. Concrete is made by mixing locally available rock and sand with In addition, the Mayco Structural Concrete ST-45 Pump can be cement and water. For this reason there are great differences in used to pump a large aggregate hard rock as follows: the pumpability of concrete from one region of the country to another. 1. Pea rock (1/2" minus) pump with mixes being as lo
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ST-45 PUMP — HOW IT WORKS The following is a brief explanation of how the concrete cylinders, hydraulic cylinders, shuttle tube, valves and hopper work in sequence to pump concrete. The hydraulic pressure is generated by a variable volume, pressure compensated, axial piston pump that is driven by a diesel engine. The rod sides of the drive cylinders are hydraulically connected together creating a “slave circuit,” which allows hydraulic oil to transfer from one piston to the other. The two part
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ST-45 PUMP — PUMP COMPONENTS Figure 7. Major Pump Components PAGE 20 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04)
