MQ Multiquip MQD2HA Operation Manual
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MQ Multiquip MQD2HA Operation Manual

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OPERATION MANUAL
MODELS
MQD2HA
MQD3HA
DIAPHRAGM PUMP
(HONDA GX120UT1QX2 GASOLINE ENGINE)
Revision #1 (10/08/20)
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 MQD2HA

  • Page 1 OPERATION MANUAL MODELS MQD2HA MQD3HA DIAPHRAGM PUMP (HONDA GX120UT1QX2 GASOLINE ENGINE) Revision #1 (10/08/20) 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 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)

  • Page 3: Table Of Contents

    Maintenance (Engine) ........22-24 Storage ..............25 Troubleshooting (Engine) ........26-27 Troubleshooting (Pump) ........27-28 NOTICE Specifications and part numbers are subject to change without notice. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 3...

  • Page 4: Safety Information

    COULD result in DEATH or SERIOUS INJURY. CAUTION Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY. NOTICE Addresses practices not related to personal injury. PAGE 4 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 5 „ No one other than the operator is to be in the working area when the equipment is in operation. „ DO NOT use the equipment for any purpose other than its intended purposes or applications. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 5...
  • Page 6 „ ALWAYS use a large basket strainer when pumping „ DO NOT pour waste, oil or fuel directly onto the ground, water that contains large debris. down a drain or into any water source. PAGE 6 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)

  • Page 7: Specifications/Performance Curve

    Dimension (L x W x H) 11.7 x 13.4 x 12.5 in. (297 x 341 x 318 mm) Dry Net Weight 28.7 lbs (13 Kg.) Figure 1. MQD2HA/MQD3HA Performance Curve MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 7...

  • Page 8: Dimensions

    (65.23 cm.) (18.64 cm.) (14.27 cm.) 41.5 in. 22 in. 30 in. 6.2 in. 6.3 in. MQD3HA (105.41 cm.) (55.88 cm.) (76.2 cm.) (15.75 cm.) (16 cm.) PAGE 8 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)

  • Page 9: General Information

    10,000 (3,048) pipe connection should always be checked for tightness and leaks. A small suction leak in the hose or fittings could prevent the pump from priming. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 9...

  • Page 10: Pump Components

    PUMP COMPONENTS GEARBOX INPUT HALF GREASE CONNECTING ROD BEARING MONTHLY Contact your nearest Multiquip dealer for quick disconnect hoses and fittings. Figure 3. MQD2HA-3HA Key Components PAGE 10 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 11 Use only diaphragm and other associated components. recommended type discharge hose. Contact Multiquip parts department for ordering information. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 11...

  • Page 12: Basic Engine

    2. Fuel Filler Cap — Remove this cap to add unleaded gasoline to the fuel tank. Make sure cap is tightened securely. DO NOT over fill. PAGE 12 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)

  • Page 13: Inspection (Engine)

    Figure 5. Engine Oil Dipstick (Removal) 3. When refueling, be sure to use a strainer for filtration. DO NOT top-off fuel. Wipe up any spilled fuel immediately! MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 13...

  • Page 14: Setup

    The strainer should be positioned so it will remain completely under water. Running the pump with the strainer above water for long periods can damage the pump. PAGE 14 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 15 „ Rough operation. becomes sufficently fluid for pumping. „ Engine overloads and slow downs. „ Reduced efficiency. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 15...

  • Page 16: Operation

    OPEN position CLOSE (Figure 16) as the engine warms up. If the engine has Figure 12. Engine Choke Lever (Closed) not started repeat steps 1 through 6. PAGE 16 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 17 Figure 20. Fuel Valve Lever (OFF) Emergency Shutdown 1. Move the throttle lever quickly to the IDLE position, and place the engine ON/OFF switch in the OFF position. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 17...

  • Page 18: Maintenance (Pump)

    This prevents backflow and allows for faster priming when the engine is restarted. PAGE 18 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 19 MAINTENANCE (PUMP) GREASE CONNECTING ROD BEARING MONTHLY Figure 22. Pump Vacuum Tester MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 19...
  • Page 20 “Stalled/Stopped/ Damaging Debris” Section. PAGE 20 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 21 6. Replace diaphragm, reassemble in reverse order. LOCK SCREW PLUNGER PLUNGER 70 FT-LBS (9.6 KG-M) DIAPHRAGM STUD FLANGE RETAINING SCREW PLATE Figure 25. Lock Screw Torquing Figure 26. Diaphragm Replacement MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 21...

  • Page 22: Maintenance (Engine)

    Refer to the HONDA shop Manual for service procedures. 3. For commercial use, log hours of operation to determine proper maintenance intervals. NOTICE Refer to manufacturer engine manual for specific servicing instructions. PAGE 22 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 23 4. Install drain bolt with sealing washer and tighten securely. GASKET OIL FILLER DIPSTICK Figure 29. Engine Air Cleaner DRAIN SEALING BOLT WASHER Figure 28. Engine Oil (Draining) MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 23...
  • Page 24 6. Reinstall the spark arrester and muffler protector in reverse order of disassembly. MUFFLER 5 MM SCREW SPARK ARRESTER Figure 30. Spark Arrester Removal PAGE 24 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)

  • Page 25: Storage

    „ Cover suction and discharge ports with duct tape to prevent any foreign matter from falling into pump. „ Cover pump and engine with plastic covering or equivalent and store in a clean, dry place. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 25...

  • Page 26: Troubleshooting (Engine)

    Engine overheats. Exhaust or muffler clogged with carbon. Clean or replace muffler. Replace spark plug with correct Spark plug heat value incorrect? type spark plug. PAGE 26 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 27 Hose diameter is too large? hose. Pressure too high? Check pressure, add additional clamp. Discharge does not stay on coupling. Hose kinked or end blocked? Check hose. MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 27...

  • Page 28: Troubleshooting (Pump)

    Discharge height is over 25 feet (7.62 Pump stalls repeatedly Lower height meters) of head? or stops for no apparent reason. Material jammed in pump well? Clean out pump well. PAGE 28 — MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20)
  • Page 29 NOTES MQD2HA/3HA DIAPHRAGM PUMP • OPERATION MANUAL — REV. # 1 (10/08/20) — PAGE 29...
  • Page 30 OPERATION MANUAL 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 Multiquip (UK) Limited Head Offi...

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Mqd3ha

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