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MQ Multiquip MAYCO C30HDN Operation Manual

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OPERATION MANUAL
SERIES
MODEL C30HDN
CONCRETE PUMP
(NISSAN ENGINE)
Revision #12 (09/18/24)
To find the latest revision of this publication or
associated parts manual, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

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Summary of Contents for MQ Multiquip MAYCO C30HDN

  • Page 1 OPERATION MANUAL SERIES MODEL C30HDN CONCRETE PUMP (NISSAN ENGINE) Revision #12 (09/18/24) To find the latest revision of this publication or associated parts manual, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

  • Page 2: Proposition 65 Warning

    PROPOSITION 65 WARNING PAGE 2 — C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24)

  • Page 3: Silicosis/Respiratory Warnings

    SILICOSIS/RESPIRATORY WARNINGS WARNING WARNING SILICOSIS WARNING RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give other materials can generate dust, mists and fumes off dust or mists containing crystalline silica. Silica is a containing chemicals known to cause serious or fatal basic component of sand, quartz, brick clay, granite and injury or illness, such as respiratory disease, cancer,...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS MAYCO C-30HDN (NISSAN) CONCRETE PUMP Proposition 65 Warning ..........2 Silicosis/Respiratory Warnings ........3 Pump Specifications ..........6 Engine Specifications ..........6 Pump Dimensions ............7 Safety Message Alert Symbols ......8-9 Rules For Safe Operation ........10-12 Operation And Safety Decals ........
  • Page 5 NOTES C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 5...

  • Page 6: Pump Specifications

    C-30HDN PUMP — PUMP SPECIFICATIONS r p i i t a t s i * r u i t r l a c . t f z i r l a t t s i . t f e z i .

  • Page 7: Pump Dimensions

    C-30HDN PUMP — PUMP DIMENSIONS Figure 1. C-30HDN Concrete Pump Dimensions C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 7...

  • Page 8: Safety Message Alert Symbols

    C-30HDN PUMP — SAFETY MESSAGE ALERT SYMBOLS HAZARD SYMBOLS FOR YOUR SAFETY AND THE SAFETY OF OTHERS! Potential hazards associated with operation of the pump will Safety precautions should be followed at all times when be referenced with Hazard Symbols which appear throughout operating this equipment.
  • Page 9 C-30HDN PUMP — SAFETY MESSAGE ALERT SYMBOLS WARNING - Rotating Parts CAUTION - Respiratory Hazards NEVER operate equipment with covers, ALWAYS wear approved respiratory or guards removed. Keep fingers , protection. hands , hair and clothing away from all moving parts to prevent injury. CAUTION - Sight And Hearing Hazards CAUTION - Accidental Starting ALWAYS place the Engine ON/OFF...

  • Page 10: Rules For Safe Operation

    C-30HDN PUMP — RULES FOR SAFE OPERATION ■ NEVER touch the hot exhaust manifold, DANGER - Read Operation And Parts muffler or cylinder. Allow these parts to cool before servicing engine or pump. Failure to follow instructions in this manual may lead to ■...
  • Page 11 C-30HDN PUMP — RULES FOR SAFE OPERATION ■ ALWAYS store equipment properly when it is not being ■ If unit is equipped with ball hitch coupler, use only 2" all used. Equipment should be stored in a clean, dry location steel ball rated for minimum of 6,000 lbs.
  • Page 12 C-30HDN PUMP — RULES FOR SAFE OPERATION BATTERY EMERGENCIES ■ ALWAYS know the location of the The battery contains acids that can cause injury to the eyes and skin. To avoid eye irritation, always wear safety glasses. nearest fire extinguisher . Use well insulated gloves when picking up the battery.
  • Page 13 NOTES C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 13...

  • Page 14: Operation And Safety Decals

    C-30HDN PUMP — OPERATION AND SAFETY DECALS Figure 2 display's the operation and safety decals as they appear on the concrete pump, should any of these decals become damaged or unreadable, contact the Multiquip Parts Department for a replacement set. Figure 2.

  • Page 15: Important Hand Signals

    C-30HDN PUMP — IMPORTANT HAND SIGNALS Figure 3 display's the basic hand signals commonly used in concrete pumping operations. Figure 3. Importand Hand Signals C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 15...

  • Page 16: Pump Components

    C-30HDN PUMP — PUMP COMPONENTS Figure 4. Major Pump Components PAGE 16 — C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24)
  • Page 17 C-30HDN PUMP — PUMP COMPONENTS Figure 4 illustrates the location of the major components 12. Radiator/Cap – Fill with a water/anti-freeze type solution for the C-30HDN Concrete Pump. The function of each as recommended in the maintenance section of this manual. component is described below: ALWAYS make sure that the radiator is filled to the proper operating level before starting the engine.

  • Page 18: Control Box Components

    C-30HDN PUMP — CONTROL BOX COMPONENTS Figure 5 illustrates the location of the major components for the C-30HDN Control Box. The function of each component is described below: Figure 5. Pump Control Box Components Battery Charge Indicator Lamp – Indicates if the Throttle Control Knob –...

  • Page 19: Engine Components

    C-30HDN PUMP — ENGINE COMPONENTS TOP VIEW FRONT VIEW Figure 6. Nissan Model A15 Basic Engine Components Figure 6 illustrates the location of the basic components Cooling Fan Blades – Make sure that the blades of the for the NISSAN A-15 Engine. The function of each cooling fan are not bent or broken .

  • Page 20: General Information

    C-30HDN PUMP — GENERAL INFORMATION The following operating principles and operating suggestions As a general rule, the use of approximately six sacks of cement, should prove helpful in the successful operation of your concrete 70% washed concrete sand and 30% #4 pea gravel per yard of pump.

  • Page 21: How It Works

    C-30HDN— HOW IT WORKS An automatic, centrifugal clutch is installed to engage and The MAYCO concrete pump has one main pumping piston disengage the pumping action without stopping or starting the which is valved by means of two ball checks. (A inlet, and B engine.
  • Page 22 C-30HDN PUMP — HOW IT WORKS The pumping piston (Figure 8) is forcing the material past ball (B) and out to the nozzle, also seating ball A so that the material will not flow back to the hopper. This action also fills the compensating piston for the next stroke.
  • Page 23 NOTES C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 23...

  • Page 24: Inspection

    C-30HDN PUMP — INSPECTION Engine Oil Check CAUTION - General Saftey Guidelines 1. To check the engine oil level, place the pump on secure level ground with the engine stopped. NEVER operate the pump in a confined area or enclosed area structure that does 2.
  • Page 25 C-30HDN PUMP — INSPECTION Gasoline Check Lubrication Box 1. Remove the gasoline cap located on top of fuel tank. The model C-30HDN model features a fully enclosed lubrication box, which utilizes the "SPLASH" method of 2. Handle Fuel in a safety container. If the container does not lubrication.
  • Page 26 C-30HDN PUMP — INSPECTION Checking Engine Coolant Level V-Belt Deflection 1. Remove the radiator cap, and check the cooling water level 1. Visually inspect the V-belt for cracks, fraying, wear or oiliness. inside the radiator (Figure 18). 2. Make sure V-belt does not the bottom the pulley groove. 2.

  • Page 27: Initial Start-Up

    C-30HDN INITIAL START-UP 3. Pull the choke knob (Figure 19) outward about half way. Starting In cold weather, start the unit with the choke in the fully closed CAUTION - General Saftey position. In summer time or when the engine is warm, the unit can be started with the choke halfway or completely DO NOT attempt to operate this concrete pump open...
  • Page 28 C-30HDN INITIAL START-UP 6. Verify that the oil pressure , battery and water tempera - System Shut-Down ture status lamps (Figure 22) are all OFF. If any of these 1. Place the pumping control switch in the OFF position lamps are ON, stop the engine and correct the problem. (Figure 20).

  • Page 29: Operating Information

    C-30HDN PUMP — OPERATING INFORMATION OPERATING SUGGESTIONS C. If it is necessary to wait 10 minutes or more for another load of concrete, it is wise to start the pump and pump 1. A well-planned location for the pump and routing of the hose 6 or 8 strokes every 5 minutes to prevent setting of the before starting a pour may save subsequent moves through- mix in the system.
  • Page 30 C-30HDN PUMP — OPERATING INFORMATION C. Calcium Chloride – commonly referred to as C.C., is WARNING - Line Blockage used as an accelerator. When pumping a load with If a blockage occurs, find where it is and clear it before calcium chloride, it is recommended that you wash out further pumping.
  • Page 31 C-30HDN PUMP — OPERATING INFORMATION 7. The manifold is plugged if the volume at the discharge end 8. Avoiding Setting of the Mix in the System of the hose stops, and the hose is soft. The drive belts will start To avoid setting of the concrete mix in the system when to slip and the engine will lugdown.
  • Page 32 C-30HDN OPERATING INFORMATION Down-Hill Pumping Valve Seats Downhill pumping can be difficult on some jobs. The slurry If the volume at the end of hose starts to decrease gradually and procedure would be the same as explained on the pages titled eventually almost stops, it is quite likely that the valve seats have Operating Suggestions.

  • Page 33: Towing Guidelines

    C-30HDN PUMP — TOWING GUIDELINES ■ Check wheel mounting lug nuts with a torque wrench. Towing Safety Precautions Torque wheel lug nuts as described in the " Lug Nut Torque CAUTION - Local Towing Regulations Requirements ", Table 5. ■ Make sure brakes are synchronized and functioning properly. Check with your county or state safety towing regulations ■...
  • Page 34 C-30HDN PUMP — TOWING GUIDELINES Figure 24 shown below illustrates the typical towing application that should be used when towing the pump. Figure 24. Towing Applications PAGE 34 — C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24)

  • Page 35: Trailer Safety Guidelines

    C-30HDN PUMP — TRAILER SAFETY GUIDELINES Trailer Safety Precautions The following list defines the major trailer components: 1. Fuel Cell – Provides an adequate amount of fuel for the CAUTION - General Trailer Safety equipment in use. Fuel cells must be empty when transport- ing equipment.
  • Page 36 C-30HDN PUMP — TRAILER SAFETY GUIDELINES Tires/Wheels/Lug Nuts Tires and wheels are a very important and critical components of the trailer. When specifying or replacing the trailer wheels it is important the wheels, tires, and axle are properly matched. CAUTION - General Trailer Safety DO NOT attempt to repair or modify a wheel.
  • Page 37 C-30HDN PUMP — TRAILER SAFETY GUIDELINES Lug Nut Torque Requirements It is extremely important to apply and maintain proper wheel mounting torque on the trailer. Be sure to use only the fasteners matched to the cone angle of the wheel. Proper procedure for attachment of the wheels is as follows: 1.

  • Page 38: Maintenance (Pump)

    C-30HDN PUMP — MAINTENANCE (PUMP) Preventive Maintenance 3. Turn the pump engine off before filling the hopper with water. Engine vibration at idle may “separate” material in the hop- It is extremely important to maintain this pump due to the per, causing jamming in manifold when pumping is resumed.
  • Page 39 C-30HDN PUMP — MAINTENANCE (PUMP) Lubrication Box Sponge Clean-out Procedure The C-30HDN model features a fully enclosed lubrication box, This section will explain the recommended procedure for using which utilizes the "SPLASH" method of lubrication. a sponge to clean out the hose lines. Visually inspect the oil in the lubrication box (Figure 16) by making CAUTION - Clearing The Pump sure the oil is at the correct operating level as indicated by the...
  • Page 40 C-30HDN PUMP — MAINTENANCE (PUMP) Crankshaft and Cam Assembly Procedure Ball and Seat Replacement Procedure 1. Set bearing block (P/N EM14303) into hydraulic press. Place 1. Remove 3”x 2” reducer and 3” elbow from the pump outlet. bearing cup into bearing block and press in evenly. Bearing Remove exhaust gate and Y-manifold (secondary manifold).
  • Page 41 C-30HDN PUMP — MAINTENANCE (PUMP) Clutch Lining Replacement (For P/N EM14320 Clutch Assembly Only) The normal lining thickness measures 3/16 of an inch. If the clutch starts to slip or make an usual noise, it may be necessary to replace the lining. Please note that the lining retaining rivets should not be exposed to the rotating weight.
  • Page 42 C-30HDN PUMP — MAINTENANCE (PUMP) Bearing Installation 1. Install the bearing components on the crankshaft making full contact with the back side of the crank disc as indicated the symbol #. See Figure 25 below. It is important that the Bearing NOTE 2.
  • Page 43 C-30HDN PUMP — MAINTENANCE (PUMP) 3. If this procedure is not followed closely the heavy loading of Detent Hole (3) Installation the bearing during pumping operation causes the Timken ™ 1. After the bearing assembly has been is installed , remove the cone bearings to create lateral forces which will move the three “dog type”...
  • Page 44 C-30HDN PUMP — MAINTENANCE (PUMP) Figure 31. V-Belt and Drive Chain Adjustment V-Belt And Drive Chain Adjustment 7. Drive belts should be regularly adjusted to prevent slippage. 1. Loosen the pillow bearing bolts (Figure 27) only to the point To adjust the belts, loosen the engine mounting bolts and where the bolts will remain snug.
  • Page 45 C-30HDN PUMP — MAINTENANCE (PUMP) Roller Chain Application Installation and Drive Alignment A properly selected, installed and maintained drive chain Chain and sprockets (Figure 29) must be installed correctly. (Figure 28) is an extremely versatile means of power transmission. Sprockets must be properly aligned and sprocket shafts must be It is possible, however, to greatly reduce a chain’s life and even parallel so the drive will run in a plane perpendicular to them.
  • Page 46 C-30HDN PUMP — MAINTENANCE (PUMP) Drive Chain Lubrication The clearance between pin and bushings is very small (Figure 31), on the order of .003 to .005 inches. A lubricant must As a chain articulates in entering and leaving a sprocket, there be thin enough to flow into the chain.
  • Page 47 C-30HDN PUMP — MAINTENANCE (PUMP) Assembling and Disassembling Drive Chain Chain-Link Pin Removal 1. If chain is of cotter pin- type construction, remove cotters. CAUTION - Drive Chain Safety 2. If chain is riveted type construction, grind pin heads off so pin ends are flush with the linkplate.

  • Page 48: Engine Rpm Adjustment

    C-30HDN PUMP — ENGINE RPM ADJUSTMENT ENGINE RPM ADJUSTMENT 3. Adjust the RPM Adjustment Bolt: A. With the engine running, turn the pump control switch CAUTION - DO NOT Adjust the Engine Governor to the ON position, slowly pull the throttle control knob toward the full throttle position.
  • Page 49 C-30HDN PUMP — ENGINE RPM ADJUSTMENT Figure 36. Linkage Adjustment C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 49...

  • Page 50: Engine Troubleshooting

    C-30HDN PUMP — ENGINE TROUBLESHOOTING Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take a remedial action following the diagnosis based on the Engine Troubleshooting (Table 6) information shown below and on the proceeding page.
  • Page 51 C-30HDN PUMP — ENGINE TROUBLESHOOTING t l i f . r e l i f l r e t t l i f . r e i t n i s i y l e g i t e r i l i o ? l l e r r...

  • Page 52: Wiring Diagram

    C-30HDN PUMP — WIRING DIAGRAM Figure 37. Wiring Diagram PAGE 52 — C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24)

  • Page 53: Wiring Diagram (Trailer Lights)

    C-30HDN PUMP — WIRING DIAGRAM (TAIL LIGHTS) Figure 38. Trailer Tail Lights Wiring Diagram C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 53...

  • Page 54: Concrete Mix Information

    APPENDIX — C-30HDN CONCRETE MIX INFORMATION The following information has been extracted from actual testing laboratory reports. The purpose of this printing is only to help create a better understanding of the importance of uniform gradation and proportioning of materials which affect pumpability of concrete mixes.
  • Page 55 APPENDIX — C-30HDN CONCRETE MIX INFORMATION A.S.T.M. STANDARD SPECIFICATION FOR GRADING AGGREGATE C-30HDN PUMP — OPERATION MANUAL — REV. #12 (09/18/24) — PAGE 55...
  • Page 56 APPENDIX — C-30HDN CONCRETE MIX INFORMATION Consolidated Rock Products Co., Division of Tests 3/8” Pea Gravel STANDARD PUMP MIXES (one-half inch minus) NOTE: All weights shown are one cubic yard with S.S.D. aggregates. CRP Mix Number 6004 ......6005 ......6006 ......6007 Design Slump (in.) 6”...

  • Page 57: Recommended Shotcrete System

    APPENDIX — C-30HDN RECOMMENDED SHOTCRETE SYSTEM RECOMMENDED SHOTCRETE SYSTEM 1 - 8 0 0 - 3 0 - M A Y C O 1/2 STANDARD AIR HOSE 13 14 15 AIR COMPRESSOR (125 TO 250 CFM) 3/4 STANDARD AIR HOSE Figure 39.
  • Page 58 APPENDIX — C-30HDN RECOMMENDED SHOTCRETE SYSTEM RECOMMENDED SHOTCRETE SYSTEM PART NO. PART NAME QTY. REMARKS EM28904 ..3" “B” COUPLING EM23946 ..3"-90° ELBOW EM28903 ..2 1/2" S/J COUPLING EM28005DD ..3"X 2 1/2 REDUCER EM28061 ..2 1/2"X 10FT. PIPE EM24849 ..

  • Page 59: Recommended Shotcrete Accessories

    APPENDIX — C-30HDN RECOMMENDED SHOTCRETE ACCESSORIES RECOMMENDED SHOTCRETE ACCESSORIES Figure 40. Shotcrete System Accessories Use a 1-3/8" rubber nozzle tip for a wide spray pattern. Use a 1-1/4" rubber nozzle tip for a narrow spray pattern. DO NOT INSTALL THE NOZZLE AT THE END OF THE HOSE UNTIL THE FIRST MATERIAL NOTE HAS PASSED THROUGH THE ENTIRE HOSE LENGTH.
  • Page 60 APPENDIX — C-30HDN RECOMMENDED SHOTCRETE ACCESSORIES RECOMMENDED SHOTCRETE ACCESSORIES PART NO. PART NAME QTY. REMARKS EM26107 HOPPER SCREEN EM231011 AIR VIBRATOR EM132 BOLT, 1/2-13X2 EM23407 AIR HOSE EM23408 BUSHING EM23411 VALVE EM912073 NIPPLE EM23409 COUPLING EM923346 WASHER, 1/2 LOCK EM406 NUT, HEX 1/2-13 EM23818 2"X25' GROOVED HOSE...

  • Page 61: Slump Test Procedure

    APPENDIX — C-30HDN C-30HDN SLUMP TEST PROCEDURE 1. To obtain a representative sample (concrete), take sev- Figure 41-B. Slump eral samples at three or more regular intervals throughout Test (2/3 Full) the discharge of the mixer or truck. DO NOT take samples at the beginning or end of the discharge.
  • Page 62 OPERATION MANUAL HERE’S HOW TO GET HELP HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING UNITED STATES Multiquip Inc. (310) 537- 3700 6141 Katella Avenue Suite 200 Cypress, CA 90630 E-MAIL: mq@multiquip.com WEBSITE: www.multiquip.com CANADA UNITED KINGDOM Multiquip...

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