Multiquip MQ41TDH manual Pump Vacuum Test

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Pump Vacuum Test

CAUTION :

DO NOT attempt to start the engine unless the pump has previously been primed. with water. Severe pump damage will occur if pump has not been primed.

To perform the pump vacuum test do the following:

1.Remove the pump fill cap, and fill the pump with water.

2.Start the engine as outlined in the initial strat-up section, and wait for the pump to begin pumping.

3.As shown in Figure 12 (next page), place a water hose inside the discharge opening of the pump, and turn on the water. This flow of water into the discharge opening will prevent the pump from running dry.

4.Place the Pump Vacuum Tester (P/N 7000030) over the pump inlet opening (Figure 15) with the vacuum guage facing upwards. It may be necessary to apply a small amount of water around the rubber seal of the vacuum tester to make a good suction fit.

MQ41TDH — MAINTENANCE

5.Check and make sure that there are no air leaks between the vacuum tester and the inlet port on the pump. If air leaks are present reseat vacuum tester.

6.Run the pump for a few minutes while monitoring the vacuum guage. If the guage indicates a reading between -25 and -20 in. Hg. (inches of mecury) then it can be assumed that the pump is working correctly.

7.If the vacuum tester guage indicates a reading below -20 in. Hg, it can then be assumed that the pump is not functioning correctly, and corrective action needs to be taken.

6.To test the flapper valve, shut down the engine. The vacuum tester should remain attached to the pump suction inlet port by vacuum. This indicates the pump's flapper valve is seating properly to hold water in the suction hose when the engine is stopped.This prevents backflow and allows for faster priming when the engine is restarted.

NOTE

25 in. Hg (inches of mecury) translates into 25 feet of lift at sea level.

MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 21

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Contents Model MQ41TDH Proposition 65WARNING Reporting Safety Defects Reporting Safety DefectsComments Training ChecklistDaily PRE-OPERATION Checklist Daily PRE-OPERATION ChecklistTable of Contents Ordering parts has never been easier Parts Ordering ProceduresRules for Safe Operation General SafetyRules for Safe Operation Machine Safety Decals Operation and Safety DecalsHatz MQ41TDH SpecificationsPump Components MQ41TDH ComponentsMQ41TDH General Information Pump Application MQ41TDH ApplicationMQ41TDH PRE-SETUP Pump MQ41TDH Initial START-UP Engine MQ41TDH Initial START-UP Engine Control Box MQ41TDH Maintenance Air Filter Blockage Indicator MQ41TDH MaintenancePump Vacuum Test Pump Vacuum Tester Pump Storage MQ41TDH Pump StorageMQ41TDH Troubleshooting Pump Engine Troubleshooting MQ41TDH Troubleshooting EngineEngine Troubleshooting Page Xxxxx only Not Used on MQ41TDH Explanation of Code in Remarks ColumnTo 5 Units MQ41TDH Suggested Spare PartsNameplate and Decals MQ41TDH Name Plate and DecalsDCS02 Decal Caution See Decal Illustrations onDecal Multiquip DCLMQ41THDPump Assy MQ41TDH Pump AssyScrew Casing Cover Shaft 1D81ZLock Washer Bolt ImpellerMQ41TDH Pump Assy Check Valve Bolt Casing CoverBolt Volute Casing Skid Assy MQ41TDH Skid AssyHold Down Battery Bolt Battery Hold DownStrainer Steel Washer Spring 10MMTRAILER-10 Assy MQ41TDH -TRAILER -10 AssyREFLECTOR, Amber STICK-ON PLUG, WiringCLAMP, Cable TIE, SELF-LOCKINGTrailer -1 Assy MQ41TDH -TRAILER -1 KIT AssyNUT, HEX CAP ScrewWASHER, Spring Axle and HUB AssyWHL-2 KIT Assy MQ41TDH WHL-2 KIT AssyWASHER, FLAT, 3/4 Split PINTIRE/WHEEL WASHER, FlatTnkzz Fuel Tank ASSY. Optional MQ41TDH -TNKZZ Fueltank ASSY. OptionalMQ41TDH -TNKZZ Fueltank ASSY. Optional Hatz 1D81Z Engine Crankcase Assy Crankcase Assy Hatz 1D81Z Engine Crankcase ASSY. External Parts Hatz 1D81Z Engine Crankcase ASSY. External Parts Hatz 1D81Z Engine Crankshaft Assy Crankshaft Assy Camshaft Assy Hatz 1D81Z Engine Camshaft AssyWoodruff KEY 3 X Shaft Bush Gearwheel Camshaft Includes Items WPISTON/RINGS Assy Hatz 1D81Z Engine PISTON/RINGS AssyWrist PIN PISTON/RINGS AssyPiston Ring SET Piston Ring SET +0.5Hatz 1D81Z Engine Cylinder Head Assy Cylinder Head Assy Hatz 1D81Z Engine Cylinder Head AssyHatz 1D81Z Engine Cylinder Head Assy OIL Pressure Pipe Includes Items W Allen Screw M 8XDisc F. Stud INTERM. Piece DecompFlywheel Assy Hatz 1D81Z Engine Flywheel AssyPushrod Protection TubePressure Ring Hatz 1D81Z Engine OIL Pump Assy OIL Pump Assy Hatz 1D81Z Engine -TIMING Cover Assy Timing Cover Assy Hatz 1D81Z Engine Fuel Device Assy Fuel Device Assy AIR Ducting Assy Hatz 1D81Z Engine AIR Ducting AssySealing Strip 32.2MM INTERMED. HousingSealing Strip 76MM Sealing Strip 413MMHatz 1D81Z Engine Breather Assy Breather Assy Fuel Tank Assy Hatz 1D81Z Engine Fueltank AssyAllen Screw M 8 X Rubber ShellCAP, Fuel Tank Fuel Hose 7/220Fuel Pump Assy Hatz 1D81Z Engine Fuel Pump AssyLever F. Feed Pump ShaftRing Fuel Feed PumpAIR Filter Assy = Silicon Sealer Hatz 1D81Z Engine AIR Filter AssyAIR Filter Assy Hatz 1D81Z Engine Exhaust Silencer Assy Exhaust Silencer Assy = HOT Temperature PasteHEX Screw M 10 X ElbowHEX NUT M Exhaust TubeSTARTER/ALTERNATOR Assy Hatz 1D81Z Engine STARTER/ALTERNATOR AssyElectric Wire Coil with Wire 12Plug Sleeve Housing Wiring HarnessHatz 1D81Z Engine Instrument BOX Assy Instrument BOX Assy Hatz 1D81Z Engine Lifting MAGNET/STOPDEVICE Assy Lifting MAGNET/STOP Device Assy Explanation of Code in Remarks Column Page HERE’S HOW to GET Help