General Pump MW User Manual

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MW/S

Owner’s Manual

• Installation

• Use

• Maintenance

General Pump is a member of the Interpump Group

MWS45A-MWS50A-MWS55A

MW32A-MWS36A-MWS40A

Ref 300790 Rev.D

11-12

GENERAL PUMP

INDEX

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3

2. DESCRIPTION OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3

3. SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

3.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

3.2 High pressure unit safety requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

3.3 Safety during operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

3.4 General procedures for using nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

3.5 Safety during unit maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5

4. PUMP IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5

5. TECHNICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 6

6. DIMENSIONS AND WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7

7. OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8

7.1 Water temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8

7.2 Maximum flow and pressure rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8

7.3 Minimum RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8

7.4 Recommended lubricant types and Manufacturers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8-9

A member of the Interpump Group

MW/S SERIES

8. PORTS AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 10

9. PUMP INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 11

9.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 11

9.2 Direction of rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 12

9.3 Version change and reducer positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 12

9.4 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 13

9.5 Pump power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 13

9.6 Suction line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 14

9.7 Filtration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 14

9.8 Outlet line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 15

9.9 Internal diameter of hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 16

9.10 V-belt transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 17

10. START UP AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 17

10.1 Preliminary inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 17

10.2 Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 18

11. PREVENTATIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 18

12. PUMP STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 19

12.1 Filling the pump with anti-corrosion emulsion or anti-freeze . . . . . . . . . . . . . . . . . . . . . . . . . .Page 19

12.2 Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 19

13. PRECAUTIONS AGAINST FREEZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 19

14. WARRANTY TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 19

15 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 20

16. EXPLODED VIEWS AND PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 21-32

17. REPAIR TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 33

18. MAINTENANCE LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 34

Ref 300790 Rev.D

11-12

Page 2

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

1. INTRODUCTION

This manual describes the use and maintenance instructions of the MW/S pump, and should be carefully read and understood before using the pump.

Correct use and adequate maintenance will guarantee the pumps trouble-free operation for a long time. General Pump declines any responsibility for damage caused by misuse or the non-observance of the instructions indicated in this manual.

Upon receiving the pump, check that it is complete and in perfect condition. Should anything be found out of order, please contact us before installing and starting the pump.

2. SYMBOL DESCRIPTIONS

Warning

Potential Danger

Read carefully and understand the manual before operating the pump

Danger

High Voltage

Danger

Wear protective mask

Danger

Wear goggles

Danger

Wear protective gloves

Danger

Wear protective boots

Ref 300790 Rev.D

11-12

Page 3

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

3. SAFETY

3.1 General Safety Indications

Improper use of pumps and high pressure systems, and the non-compliance with installation and maintenance instructions may cause severe injury to people and/or damage to property. Anyone assembling or usinge high pressure systems must possess the necessary competence to do so, should be aware of the characteristics of the components assembled/used, and must take all precautions necessary to ensure maximum safety in any operating condition. In the interest of safety, both for the Installer and the Operator, no reasonably applicable should be omitted.

3.2 High pressure unit safety requirements

1. The pressure line must always be equipped with a safety valve.

2. High pressure system components, in particular for those units working outside, must be adequately protected against rain, frost and heat.

3. The electrical control system must be adequately protected from water spray, and must comply with the specific regulations in force.

4. High pressure hoses must be properly sized for maximum operating pressure of the system and always and only used within the operating pressure range specified by the hose manufacturer. The same rules should be observed for all other auxiliary systems affected by high pressure.

5. The ends of high pressure hoses must be sheathed and secured to a solid structure to prevent dangerous whiplash in case of bursting or broken connections.

6. Appropriate safety guards must be provided for the pump transmission systems (couplings, pulleys and belts, auxiliary drives).

3.3 Safety During Operation

The working area of a high pressure system must be clearly marked. Access must be prohibited to un-authorized personnel and, wherever possible, the area should restricted or fenced. The personnel authorized to access this area should first be trained, and informed about the risks that may arise from failures or malfunctions of the high pressure unit.

Before starting the unit, the operator must check:

1. That the high pressure system is properly powered (see paragraph 9.5).

2. That pump intake filters are perfectly clean; we advise the use of a device that indicates the filters clogging level.

3. Electrical parts are adequately protected and in perfect condition.

4. The high pressure hoses do not show apparent signs of abrasion, and that fittings are in perfect shape.

Any fault or reasonable doubt that may arise before or during operation should be promptly reported and verified by competent personnel. In these cases, pressure should immediately be released and the high pressure system stopped.

3.4 General Procedures For Using Nozzles

1. The Operator must always place his own and other worker’s safety before any other interest; his and should always be governed by good sense and responsibility.

2. The Operator must always wear a helmet with a protective visor, waterproof clothing, and appropriate boots capable of guaranteeing grip on wet pavement.

Ref 300790 Rev.D

11-12

Page 4

GENERAL PUMP

Note: appropriate clothing will effectively protect against water spray, but it may not offer adequate protection against the direct impact of water jets or sprays from a close distance. Some circumstances may require further protection.

3. It is generally best to organize personnel into teams of at least two people capable of giving mutual and immediate assistance in case of necessity and of taking turns during long and demanding operation.

4. Access to the work area that is within the water jets’ range must be absolutely prohibited to and free from objects that, inadvertently under a pressure jet, can be damaged and or create dangerous situations.

5. The water jet must only and always be directed in the direction of the work area, including during testing or preliminary tests or checks..

6. The Operator must always pay attention to the trajectory of the debris removed by the water jet. If necessary, suitable guards must be provided by the Operator to protect anything that may be accidentally exposed.

7. The Operator should not be distracted for any reason during operation. Workers needing to access the operating area must wait for the Operator to stop work, and then immediately make their presence known.

8. For safety reasons, it is important that each member of the team is fully aware of the intentions and actions of other team members in order to avoid dangerous misunderstandings.

9. The high pressure system must not be started up and run under pressure without all team members in position and without the Operator having already directed his/her lance toward the work area.

3.5 Safety During System Maintenance

1. The pressure system meintenance must be carried out in the time intervals set by the manufacturer who is

responsible for the whole group according to law.

2. Maintenance should always be carried out by trained and authorized personnel.

3. Assembly and disassembly of the pump and its various components must be performed exclusively by authorized

personnel, using appropriate equipment in order to avoid damage to components and connections.

4. Always use original spare parts to ensure total reliability and safety.

A member of the Interpump Group

MW/S SERIES

4. PUMP IDENTIFICATION

Each pump has a specific label which contains:

Pump model and version Serial Number Flow Rate - GPM Pressure - PSI Power - Hp-kW Maximum RPM

Pump model, version and serial number must always be specified when ordering spare parts.

Ref 300790 Rev.D

11-12

Page 5

GENERAL PUMP

5. TECHNICAL FEATURES

A member of the Interpump Group

MW/S SERIES

MODEL RPM

MW32A 1500/1800/2200 36.0 136 4350 300 106 79

MWS36A 1500/1800/2200 45.5 172 3900 269 121 90

MWS40A 1500/1800/2200 56.0 213 3050 210 117 87

MWS45A 1500/1800/2200 71.0 269 2500 172 121 90

MWS50A 1500/1800/2200 87.5 333 2000 138 119 88

MWS55A 1500/1800/2200 105.5 400 1450 100 104 77.5

FLOW RATE PRESSURE POWER

GPM l/min PSI Bar Hp kW

Ref 300790 Rev.D

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GENERAL PUMP

6. DIMENSIONS AND WEIGHT

For dimensions and weight of MW32A, MWS36A and MWS40A pumps, please refer to fig. 2.

A member of the Interpump Group

MW/S SERIES

Weight: 540 Lbs./244 Kg.

For dimensions and weight of MWS45A, MWS50A and MWS55A pumps, please refer to fig. 2a.

fig. 2

Weight: 540 Lbs./245 Kg.

fig. 2a

Ref 300790 Rev.D

11-12

Page 7

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

7.INFORMATION ABOUT PUMP USE

The MW/S pump was designed to operate with filtered water (see paragraph 9.7) and at

maximum temperature of 1040F (400C).

Other fluids may be used only upon the approval of The Customer Service Department .

7.1 WaterTemperature

The max water temperature is 1040F (400C).However, it is possible to use the pump at temperatures of up

to 140

Department.

7.2 Max Flow Rate and Pressure Values

The performance values indicated in the catalog refer to the maximum performance of the pump. Regardless of the power used, pressure and maximum RPM values indicated on the plate may not be exceeded unless expressly authorized by the Customer Service Department.

F (600C) for short periods of time. In this case we advise consulting the Customer Service

7.3 Lowest RPM

Any RPM value different from what is indicated in the performance table (see chapter 5) must be expressly authorized by the Customer Service Department.

7.4

Recommended Lubricant Oil Types & Manufacturers

The pump is delivered with lubricant oil compliant with room temperatures ranging between 320and 89.60F (00and 300C ). Some recommended lubricant types are indicated in the table below; these lubricants are treated with additives in order to increase corrosion protection and resistance to fatigue. As an alternative, Automotive SAE 85W-90 gearing lubricants may also be used.

Check the oil level by using the oil level dipstick (1), fig. 3. Refill if necessary to top off level. Correct oil level inspection is done with the pump at room temperature; oil is changed with the pump at working temperature, by remov-

BRAND TYPE

GENERAL PUMP SERIES 220

ARAL Aral Degol BG220

BP ENERGOL HLP 220

CASTROL

ELF

ESSO NUTO 220

FINA Cirkan 220

FUCHS RENOLIN 220

MOBIL DTE OIL BB

SHELL TELLUS C 220

TEXACO RANDO HD 220

TOTAL CORTIS 220

Hyspin VG 220, Magna

POLYTELIS 220

220

ing the rear plug (2), fig 3.. Checking and changing oil is to be carried out as indicated in Chapter 11. The amount required is 304 oz. (9 liters).

Ref 300790 Rev.D

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Page 8

GENERAL PUMP

In any case, oil must be changed at least once a year since it may deteriorate by oxidation.

For room temperatures that differ from that mentioned earlier, follow the indications contained in the diagram below, keeping in mind that the oil must have a minimum viscosity of 180 cSt.

A member of the Interpump Group

MW/S SERIES

VISCOSITY/ROOM TEMPERATURE DIAGRAM

Exhausted oil must be collected in an appropriate recipient and disposed of in appropriate locations. In absolutely no case may it be dispersed into the environment.

Ref 300790 Rev.D

Page 9

11-12

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

8. PORTS AND CONNECTIONS

MW/S Series pumps are equipped with (see fig. 4 and 4a):

1. 2 inlet ports “IN”, 2” NPT (MW32A, MWS36A, MWS40A). 2 inlet ports “IN”, 2-1/2” NPT (MWS45A, MWS50A, MWS55A).

The line can be connected to either of the two inlet ports; the ones not being used must be hermetically sealed.

2. 2 outlet ports “OUT”, Ø 1” NPT-F (MW32A, MW36A, MW40A). 2 outlet ports “OUT”, Ø 1-1/4” NPT-F (MW45A, MW50A, MW55A).

3. 1 drain port “DRAIN” with G1/2” hole in the lower cover to moniter any water leakage due to wear of the pressure packings. In case of leaks, please consult the repair manual.

This hole must always be kept open.

Ref 300790 Rev.D

11-12

Page 10

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

9. PUMP INSTALLATION

9.1 Installation

The pump must be installed in a horizontal position using the M16 threaded support feet. Tighten the screws with a torque of 200 Nm (147.5 Ft-Lb)

The base must be perfectly flat and rigid enough as not to allow bending or misalignment on the pump coupling and axis/transmission due to torque transmitted during operation.

Two lifting brackets are mounted on the pump for easy installation, as per the figure below.

The brackets are sized soley for pump lifting and therefore are absolutely not permitted for use of additional loads.

Replace the oil filling hole closing service plug positioned on the rear casing cover with the plug with oil dipstick. Check the correct quantity.

The dipstick must always be reachable, even when the unit is assembled.

The pump’s shaft (PTO) must not be rigidly connected to the motor unit.

The following transmission types are suggested:

• Flexible joint

• Cardan Joint (please respect the maximum working angles indicated by the manufacturer)

• Belts; for correct application, please contact the Customer Service Department.

Ref 300790 Rev.D

11-12

Page 11

GENERAL PUMP

9.2 Direction of rotation

The PTO rotation is indicated by an arrow located on the reduction gear cover. From a position facing the pump head, the rotation direction will be as in fig. 5.

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MW/S SERIES

9.3 Version Change and Reducer Positioning

A right version pump is defined when: observing the pump from the head side, the PTO shank of the pump shaft is on the right side.

A left version pump is defined when: observing the pump from the head side, the PTO shank is on the left side. See fig. 5.

The version may be changed only by trained and authorized personnel by carefully following the instructions in the repair manual.

1. Separate the pump head from the power end (crankcase) as indicated in Chapter 2 in points 2.2.1 and 2.2.3 of the Repair Manual.

2. Turn the power end (crankcase) 180oand reposition the rear casing cover in such a way that the oil dipstick is turned upward. Reposition the lifting bracket and relative hole closing plugs in the upper part of the casing. Invert the two inspection covers, ensuring that the open one is positioned lower. Finally, properly reposition the specification label in its housing on the casing.

Make sure that the lower inspection cover draining holes are open.

3. Reassemble the pump head with the power end (crankcase( as indicated in Chapter 2 in points 2.2.1 and 2.2.4 of the Repair Manual.

It is also possible to place the reduction gear in 5 different positions as per fig. 6.

Ref 300790 Rev.D

11-12

Page 12

GENERAL PUMP

The reducer’s position may be changed only by trained and authorized personnel by carefully following the instructions in the repair manual.

9.4 Hydraulic Connections

In order to isolate the system from the vibrations produced by the pump, we advise to build the first section of the duct near the pump (both for intake and delivery) with flexible hose. The consistency of the intake section must allow to avoid deformation caused by the depressurization produced by the pump.

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MW/S SERIES

fig. 6

9.5 Pump Power Supply

MW/S pumps must always be installed under positive head, i.e. they must receive water by gravity or by forced feeding, and never suctioned from a lower level. The pumps can tolerate minimum NPSH even as low as 1 m. (3.28 ft.), however, to obtain a better volumetric efficiency and above all to avoid cavitation, the minimum NPSH available, measured at the pump inlet flange, will have to be at least equal or higher than the values shown in the chart below.

MW32A MWS36A MWS450A MWS45A MWS50A MWS55A

NPSHr(ft)

For higher cylinder capacity pumps (MWS45A-S50A-S55A), it is strongly recommended to use a booster pump to avoid cavitation, in view of the geometry on the hydraulic section and of the remarkably high flow rates.

The booster pump must have the following specifications: flow rate at least double the rated flow rate of the pump, and pressure between 30 to 40 PSI (2 to 3 Bar). These feeding conditions must be respected at any operating RPM.

Booster start-up must always precede plunger pump start-up. In order to protect the pump, we advise to install a pressure switch on the feeding line after the filters.

4.5 5.5 6.5 7.5 8 9

Ref 300790 Rev.D

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Page 13

GENERAL PUMP

9.6 Suction Line

For the pump’s correct operation, the suction line must have the following characteristics:

1. Minimum internal diameter as indicated in the diagram in paragraph 9.9, and in any case equal or greater than

the pump head’s value. Along the duct, avoid localized diameter reductions that may cause pressure drops with subsequent cavitation. Absolutely avoid 900elbows, connections with other hoses, bottlenecks, counter-slopes,

upside down “U” shaped curves, “T” connections.

2. With a layout that is set in such a way to prevent cavitation.

3. It should be perfectly airtight, and built in a way that guarantees perfect sealing over time.

4. Avoid pump emptying when stopping (even partial emptying).

5. Do not use hydraulic fittings, 3 or 4 way fittings, adapters, etc., since they may hinder the pump’s performance.

6. Do not install Venturi tubes or injectors for detergent intake.

7. Avoid the use of standing valves, check valves, or any other type of one-way valves.

8. Do not connect the by-pass line from the valve directly to the pump suction line.

9. Provide appropriate baffle plates inside the tank in order to avoid water flows coming from both the by-pass and feeding which lines may create turbulance near the tank’s outlet port.

10. Make sure that the suction line is perfectly clean inside before connecting it to the pump.

11. The pressure gauge for checking booster pressure must be installed near the plunger pump’s inlet port, and always

downstream from the filters.

9.7 Filtering

On the suction line, install two filters as indicated in fig. 7 and fig. 7/a.

A member of the Interpump Group

MW/S SERIES

With the manual adjustment valve:

Ref 300790 Rev.D

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Page 14

GENERAL PUMP

With the pneumatic adjustment valve:

A member of the Interpump Group

MW/S SERIES

The filter must be installed as close as possible to the pump, should allow easy inspection and have the following characteristics:

1. Minimum capacity 3 times greater than the pump’s rated flow value.

2. Filter port diameters must not be smaller than the pump inlet ports.

3. Filtration degree ranging between 200 and 360 µm.

In order to guarantee correct pump operation, it is important to plan periodical cleaning of the filter depending on actual pump usage, water quality and actual clogging conditions.

9.8 Outlet Line

To obtain a correct delivery line, please comply with the following installation instructions:

1. The internal diameter of the hose must allow to guarantee correct fluid speed; see digram in paragraph 9.9

2. The first section of the hose connected to the pump must be flexible in order to isolate pump vibrations from the rest of the system.

3. Use high pressure hoses and fittings that guarantee wide safety margins in any working condition.

4. Install a safety valve on the delivery line.

5. Use pressure switches suitable for the pulsating loads typical of plunger pumps.

6. In the design phase, take into proper account the pressure drop along the line, since this causes a reduction in usage pressure with respect to the value measured at the pump.

7. If the pump pulsations are harmful for particular applications, install an appropriately sized pulsation dampener on the outlet line.

Ref 300790 Rev.D

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GENERAL PUMP

9.9 Internal Diameter of the Hose Line

To determine the internal diameter of the hose, please refer to the following diagram.

Suction Hose

With a flow rate of ~105 GPM (400 l/mn) and water speed of 1 m/sec. the diagram line that connects the two scales intersects the central scale, indicating the diameters, at a value of ~ 3.5 inch (90 mm).

Delivery Hose

With a flow rate of ~105 GPM (400 l/mn) and water speed of 5.5 m/sec. The diagram line that connects the two scales intersects the central scale, indicating the diameters at a value of ~ 1.6 inch (40 mm).

Optimal speed to be obtained with the booster pump:

• Suction: ≤ 1 m/sec.

• Delivery: ≤ 5.5 m/sec.

A member of the Interpump Group

MW/S SERIES

The diagram does not take into account the hose and valve resistance, the pressure drop due to the pipe length, the viscosity and the temperature of the pumped fluid. If necessary, contact our Customer Service Department.

Ref 300790 Rev.D

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Page 16

GENERAL PUMP

9.10 V-belt Transmission

As indicated in paragraph 9.1, only in exceptional cases may the pump be driven by a v-belt system. For correct lay-out sizing, please contact our Customer Service Department.

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MW/S SERIES

10. START-UP AND OPERATION

10.1 Preliminary Inspections

Before Start-up Be sure that:

The suction line is connected and up to pressure (see Chapter 9) the pump must never run dry.

1. The suction line must be perfectly airtight.

2. All the On-Off valves between the pump and the feeding source are completely open. The delivery line must discharge freely in order to allow the air in the pump to be expulsed easily, thus facilitating pump priming.

3. All suction/delivery connections and fittings must be correctly tightened.

4. Coupling tolerances on the pump/transmission axis (half-joint misalignment, Cardan inclination, belt tightening, etc.) must remain within the limits indicated by the transmission Manufacturer.

5. The pump’s oil level must be verified using the correct dipsticks (position 1, fig 8).

In case the pump has not run for a long period of time, recover the correct operation of the suction valves by opening the three valve-lifting devices (see position 2, fig. 9). Be sure to reclose the valves before the pump start-up. See fig. 10 for “work” and “rest” positions.

fig. 10

Ref 300790 Rev.D

11-12

Page 17

GENERAL PUMP

10.2 Start-up

1. When starting the pump for the first time, check for the correct direction of rotation.

2. The pump must be started off-load.

3. Verify correct feeding pressure.

4. During operation, check that the rotating speed does not exceed the rated value.

5. Before putting the pump under pressure let it run for at least 3 minutes.

6. Before stopping the pump, release the pressure by acting on the adjustment valve or on any discharging device.

Whenever priming problems arise due to insufficient feeding, intervene by removing the three front plugs on the head (see position 3, fig. 11 and 11a).

A member of the Interpump Group

MW/S SERIES

11. PREVENTIVE MAINTENANCE

To guarantee pump reliability and efficiency, comply with the maintenance intervals as indicated in the table below.

PREVENTIVE MAINTENANCE

EVERY 500 HOURS EVERY 1000 HOURS

Check oil level Change oil

Check / Replace:*

• Valves

• Valve seats

• Valve springs

• Valve guides

Check / Replace:

• H.P packings

• L.P. packings

* For replacement follow instructions contained in the repair manual.

Ref 300790 Rev.D

11-12

Page 18

GENERAL PUMP

12.

PUMP STORAGE

12.1 Filling the Pump With An Anti-Corrosion Emulsion or Anit-freeze By Using An External Diaphragm Pump As In The Layout Shown in Paragraph 9.7.

a) Close the filter draining, if open. b) Be sure that the connecting hose is clean, spread with grease and connect it to the high pressure outlet port. c) Fit a suction hose to the membrane pump. Open the pump suction connection and fit hose between it and the

membrane pump. d) Fill the container with the solution/emulsion. e) Put the free extremeties of the suction line and the high pressure outlet hose inside the container. f) Start up the diphragm pump. g) Pump the emulsion until it comes out of the high pressure hose. h) Continue pumping for at least another minute; if needed, the emulsion can be reinforced by adding, for example,

Shell Donax i) Stop the pump, remove the hose from the suction connection and close it with a plug. j) Remove the hose from the high pressure outlet port. Clean, grease and plug both connections and the

hoses.

12.2 Hoses

a) Before greasing and protecting the hoses according to the previously described procedure, dry the connections

using compressed air. b) Cover with polyethelene. c) Do not wrap them too tightly; be sure there is no bending.

A member of the Interpump Group

MW/S SERIES

PRECAUTIONS AGAINST FREEZING

13.

In areas and periods of the year where there is risk of freezing, follow the instructions indicated in Chapter 12 (see paragraph 12.2).

In the presence of ice, in no case must the pump be started until the entire circuit has been completely thawed out; not complying with this indication may cause serious damage to the pump.

WARRANTY TERMS

14.

The pump is guaranteed for a period of 5 years from the delivery date, with the exception of parts subject to wear. In any case, please refer to the contract terms for other warranty conditions. The warranty is void if: a) The pump has been used for purposes that differ from that agreed. b) The pump has been fit with an electric or diesel engine with performance greater than that indicated in the table. c) The required safety devices were un-adjusted or disconnected. d) The pump was used with accessories or spare parts not supplied by General Pump. e) Damage was caused by:

1) improper use

2) the non-observance of maintenance instructions

3) use not compliant with operating instructions

4) insufficient flow rate

5) faulty installation

6) incorrect positioning or sizing of the hoses

7) non-authorized design changes

8) cavitation

Ref 300790 Rev.D

11-12

Page 19

GENERAL PUMP

15.

TROUBLESHOOTING

The pump does not produce any noise at start-up:

• The pump is not primed and is running dry

• There is no water in the inlet line

• The valves are blocked

• The delivery line is closed and does not allow the air in the pump to be discharged

The pump pulses irregularly (knocking):

• Air suction

• Insufficient feeding

• Bends, elbows, fittings along the suction line obstruct the fluid’s passage

• The inlet filter is dirty or too small

• The booster pump, where provided, supplies insufficient pressure or flow rate

• The pump is not primed due to insufficient head or the delivery line is closed during priming

• The pump is not primed due to valve seizing

• Worn valves

• Worn pressure packings

• Incorrect operation of the pressure adjustment valve

• Transmission problems

The pump does not deliver the rated flow / is noisy:

• Insufficient feeding (see the causes listed above)

• RPM are less than the rated flow

• Excessive amount of water by-passed by the pressure adjustment valve

• Worn valves

• Leakage from the pressure packings

• Cavitation due to:

1) Wrong sizing of the suction hose/ undersized diameters

2) Insufficient flow rate

3) High water temperature

A member of the Interpump Group

MW/S SERIES

Insufficient pump pressure:

• The nozzle (or has become)too large

• Insufficient RPM

• Leakage from the pressure packings

• Incorrect operation of the pressure adjustment valve

• Worn valves

Overheated pump:

• The pump is overloaded (pressure or RPM exceed the rated values)

• Oil level is too low, or the oil is not of a suitable type, indicated in Chapter 7 (see paragraph 7.4)

• Incorrect alignment of the joint or pulleys

• Excessive inclination of the pump during operation

Pump vibrations or knocking:

• Air suction

• Incorrect operation of the pressure adjustment valve

• Valve malfunction

• Irregular drive transmission motion

Ref 300790 Rev.D

11-12

Page 20

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MW32A/S36A/S40A SERIES

Ref 300790 Rev.D

11-12

Page 21

GENERAL PUMP

A member of the Interpump Group

MW32A/S36A/40A SERIES

temPart #

1 F73120215 MANIFOLD-NPT 1

2 F200030170 VALVE OPENING DEVICE 3

36208801BALL VALVE ASSEMBLY

3 F

4 F36306766 INLET VALVE HOUSING 3

5 F90526000 ANTIEXTRUSION RING Ø51.5x56x1.5 3

6 F90389000 OR, Ø50.47X2.62 3

36209051INTERNAL VALVE GUIDE

8 F

9 F94760000 SPRING Ø 28.3X30.7 3

10 F36206151 INLET/OUTLET VALVE GUIDE 3

11 F36715101 INLET VALVE UNIT 3

12 F74210651 HP VALVE GUIDE SPACER

13 F90358400 OR, Ø 10.82X1.78 3

90204600PLUG G 1/4"X13, SS

14F

15 F73212270 VALVE HOUSING SPACER RING 3

90526500ANTIEXTRUSION RING Ø 51.7X56.2X1.5

16F

36206966OUTLET VALVE HOUSING

17F

18 F90527600 ANTIEXTRUSION RING Ø 67.7X72.2X1.5 3

19 F90391100 OR, Ø 66.35X2.62 6

20 F94760500 SPRING Ø 28.5X32 3

21 F36715301 OUTLET VALVE UNIT 3

74211070HP OUTLET VALVE PLUG

22F

90528000ANTIEXTRUSION RING Ø 67.7X72.2X1.5

23F

24 F94775000 SPRING Ø 58X45.4 3

25 F74210866 OUTLET VALVE HOUSING RING 3

26 F99514700 SCREW, M16x180 8

27 F73210715 VALVE COVER 1

28 F99522200 SCREW, M16x180 8

29 F96710500 WASHER Ø 10X18X0.9, SS, PTFE 3

30 F99383000 SCREW, M10X140 3

F73040009 PLUNGER Ø 32 3

F73040109 PLUNGER Ø 36 3

F73040209 PLUNGER Ø 49 3

32 F90408500 O-RING, 49.21X3.53 3

33 F90382500 O-RING, 10.78X2.62 6

F73211656 PLUNGER LINER Ø 32 3

F73211756 PLUNGER LINER Ø 36 3

F73211856 PLUNGER LINER Ø 40 3

35 F90371000 OR, Ø 81X2 6

F73100092 PLUNGER HEAD RING Ø 32 3

F78100192 PLUNGER HEAD RING Ø 36 3

F74100092 PLUNGER HEAD RING Ø 40 3

F90278800 ALT. SEAL RING, Ø 32, HP 3

F90282000 ALT. SEAL RING, Ø 36, HP 3

F90283200 ALT. SEAL RING, Ø 40, HP 3

F90278400 RESTOP RING Ø 32 3

F90281800 RESTOP RING Ø 36 3

F90283800 RESTOP RING Ø 40 3

F73212792 SEAL SUPPORT, Ø 45 3

F73712892 SEAL SUPPORT, Ø 50 3

F73212992 SEAL SUPPORT, Ø 55 3

F90284600 ALT. SEAL RING, LP, Ø 45 3

F90286000 ALT. SEAL RING, LP, Ø 50 3

F90287000 ALT. SEAL RING,LP, Ø 55 3

41 F96735500 WASHER, Ø16X65X1 3

42 F73150022 CLOSED INSPECTION COVER 1

43 F73050156 PISTON GUIDE ROD 3

44 F90414800 OR, Ø 202.8X3.53 2

45 F73150156 OPEN INSPECTION COVER 1

escription

TY.

Item Part # Description QTY.

46 F90168500 RAD. RING, Ø 40X72X7/8.5 3

97674000ELASTIC PIN, Ø 5X16, UNI 6876

47F

48 F99369700 SCREW, M10X35, UNI 5739 3

F73050043 PISTON GUIDE 3

73050243PISTON GUIDE, +0.10

50 F73210674 LIFTING BRACKET 2

99523100SCREW, M16x30, UNI 5931

51F

52 F73030101 CONNECTING ROD ASSY. 3

53 F99378800 CONROD SCREW, M10X1.5X80 6

90928300CONROD HEAD SEMI-BUSHING, LOWER

F90928400 CONROD HEAD SEMI-BUSHING, LOWER, +0.25 3

90928500CONROD HEAD SEMI-BUSHING, LOWER, +0.50

90928000CONROD HEAD SEMI-BUSHING, UPPER

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

F90928200 CONROD HEAD SEMI-BUSHING, UPPER, +0.50 3

57 F90915800 CONROD FOOT BUSHING 3

58 F90069000 STOP RING, Ø 32, UNI 7437 6

97744000SPINDLE

59F

60 F99183800 SCREW, M6x14, UNI 5931 6

61 F73200064 FOOT 2

62 F98206000 HOLE PLUG. Ø 15, TTN18 6

63 F98233100 OIL FILLING PLUG, G1” WITH ROD 1

90361600OR, Ø 34.65X1.78

64F

65 F73210295 TUBE FOR OIL FILLING PLUG, G1” 1

66 F91854000 CYL. ROLLER BEARING 1

F10076735 PINION, HELICAL, Z24 R1.875 1

F10076835 PINION, HELICAL, Z21 R2.238 1

F10076935 PINION, HELICAL, Z18 R2.722 1

68 F97623000 TMP. CYL. PIN. Ø 10X24, UNI 6364 2

69 F90101000 STOP RING, Ø 120, UNI 7437 1

70 F91859900 ADJUST ROLLER BEARING 11

71 F73210455 BEARING SUPPORT RING 1

72 F90081000 STOP RING, Ø 55, UNI 7435 1

73 F90172400 RAD. RING, Ø 55X75X8, VITON 1

74 F91500500 TAB, 14X9X60, UNI 6604 1

75 F73210589 RING GEAR SUPPORT RING 1

76 F99366700 SCREW, M10X25, UNI 5739 2

77 F91511000 TAB, 22X14X80, UNI 6604 1

78 F74213255 RING GEAR STOP 1

79 F73020035 CRANKSHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1

F10077135 RING GEAR, Z47 R2.238, HELICAL 1

F10077235 RING GEAR, Z49 R2.722, HELICAL 1

81 F99371100 SCREW, M10X40, UNI 5931 15

82 F73210100 REDUCTION GEAR COVER 1

83 F90415000 OR, Ø 253.6.X3.53 2

84 F73210013 REDUCTION GEAR BOX 1

85 F91881000 CYL ROLLER BEARING 2

86 F73210384 SIDE SEAL 2

87 F73010013 PUMP CASING 1

88 F73160022 CASING COVER 1

89 F99368500 SCREW, M10X30, UNI 5931 14

90 F73150222 BEARING COVER 1

91 F98218100 PLUG, G1/2”X13, SS 2

92 F93197100 ALUMINUM WASHER, Ø 21.5x27x1.5 2

REPAIR KITS

KIT

NUMBER

Positions

Included

F2136 (MW32A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2137 (MWS36A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2138 (MWS40A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2055

Valve Kit

11, 12, 21, 23

F2144 (MW32A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2145 (MWS36A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2146 (MWS40A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2150

Conn,Rod Kit

55, 56 55, 56 55, 56

Ref 300790 Rev.D

F2151

Conn. Rod Kit

11-12

Page 22

F2153

Conn. Rod Kit

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MWS45-S50-S55 SERIES

Ref 300790 Rev.D

11-12

Page 23

GENERAL PUMP

A member of the Interpump Group

MWS45-S50-S55 SERIES

temPart #

1 F73120315 MANIFOLD, NPT 1

2 F200030170 VALVE OPENING DEVICE 3

96751400WASHER, Ø 21.5X27X1.5

3 F

4 F98218500 STEEL PLUG, 1/2" 3

5 F36206666 INLET VALVE HOUSING 3

6 F90527000 ANTI-EXTRUSION RING, Ø 61.2X67X2 3

90410500OR, Ø 59.62X3.53

7 F

9 F36208701 BALL VALVE ASSY. 3

10 F36208951 INTERNAL VALVE GUIDE 3

11 F94769800 SPRING, Ø41.5X37.9

12 F36206051 INLET VALVE GUIDE 3

13 F36715001 INLET VALVE UNIT 3

73210815INLET VALVE COVER

14F

F73040309 PLUNGER, Ø 45X117 3

73040409PLUNGER Ø 50X117

73040509PLUNGER Ø 55X117

16 F90414200 OR, Ø 85.32X3.53 3

17 F96710500 WASHER, Ø 10X18X0.9,SS, PTFE 3

18 F99383000 SCREW, M10X140 3

19 F99514200 SCREW, M16x45 16

90358400OR, Ø 10.82X1.78

20F

98204600PLUG, G ¼”X13, SS

21F

22 F36206766 OUTLET VALVE HOUSING 3

23 F90526000 ANTI-EXTRUSION RING, Ø 51.5X56X1.5 3

24 F90389000 OR, Ø 50.47X2.62 3

26 F36208801 BALL VALVE ASSY. 3

27 F36209051 INTERNAL VALVE GUIDE 3

28 F94760500 SPRING, Ø 28.5X32 3

29 F36206151 OUTLET VALVE GUIDE 3

30 F36207701 OUTLET VALVE UNIT 3

31 F73210915 OUTLET VALVE COVER 1

32 F90412000 OR, Ø 68.26X3.53 3

33 F90411500 OR, Ø 63.5X3.53 3

F73211956 LINER, Ø 45 3

F73212056 LINER, Ø 50 3

F73212156 LINER, Ø 55 3

35 F90382500 OR, Ø 10.78X2.62 6

F74100192 PISTON HEAD RING, Ø 45 3

F74100292 PISTON HEAD RING, Ø 50 3

F74100392 PISTON HEAD RING, Ø 55 3

F90285000 ALT. SEAL RING, HP, Ø 45 3

F90286300 ALT. SEAL RING, HP, Ø50 3

F90287300 ALT. SEAL RING, HP, Ø 55 3

F90284800 RESTOP RING, Ø 45 3

F90286500 RESTOP RING, Ø 50 3

F90287500 RESTOP RING, Ø 55 3

F73211368 SEAL SUPPORT, Ø 45 3

F73211468 SEAL SUPPORT, Ø 50 3

F73211568 SEAL SUPPORT, Ø 55 3

40 F90371000 OR, Ø 81X2 6

F70284600 ALT. SEAL RING, LP, Ø 45 3

F90286000 ALT. SEAL RING, LP, Ø 50 3

F90287000 ALT. SEAL RING, LP, Ø 55 3

42 F96735500 WASHER, Ø 16X65X1 3

43 F99521200 SCREW, M16X150 8

44 F73150022 CLOSED INSPECTION COVER 1

escription

TY.

Item Part # Description QTY.

45 F73050156 PLUNGER GUIDE ROD 3

90414800OR, Ø202.8X3.53

46F

47 F73150122 OPEN INSPECTION COVER 1

48 F90168500 RAD. RING, Ø40X72X7/8.5 3

97674000ELASTIC PIN, Ø 5X16, UNI 6876

49F

50 F99369700 SCREW, M10X35, UNI 5739

73050043PLUNGER GUIDE

F73050243 PLUNGER GUIDE, +0.10 3

52 F73210674 LIFTING BRACKET 2

99513000SCREW, M16x30, UNI 5931

53F

54 F73030101 CONNECTING ROD ASSY. 3

99378800CONNECTING ROD SCREW, M10X1.5X80

55F

90928000CONROD HEAD SEMI-BUSHING, LOWER

F90928400 CONROD HEAD SEMI-BUSHING, LOWER, +0.25 3

F90928500 CONROD HEAD SEMI-BUSHING, LOWER, +0.50 3

F90928300 CONROD HEAD SEMI-BUSHING, UPPER 3

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

90928200CONROD HEAD SEMI-BUSHING, UPPER, +0.50

59 F90915800 CONROD HEAD FOOT BUSHING 3

60 F90069000 STOP RING, Ø 32 UNI 7437 6

61 F94744000 SPINDLE 3

62 F99183700 SCREW, M6X14, UNI 5931 4

73200064FOOT

63F

64 F98206000 HOLE PLUG, Ø 15 6

65 F98233100 OIL FILLING PLUG, G1”, WITH ROD 1

66 F90361600 OR, 34.65X1.78 1

67 F73210295 TUBE FOR OIL FILLING PLUG, G1 ” 1

68 F91854000 CY. ROLLER BEARING 1

F10076732 PINION, Z24 R1.875, HELICAL 1

F10076835 PINION, Z21 R2.238, HELICAL 1

F10076935 PINION, Z18 R2.722, HELICAL 1

70 F97623000 TMP. CYL. PIN, Ø 10X24 2

71 F90101000 STOP RING, Ø 120 1

72 F91859900 ADJUST. ROLLER BEARING 1

73 F73210455 BEARING SUPPORT RING 1

74 F90081000 STOP RING, Ø 55 1

75 F90172400 RAD. RING, Ø 55X75X8, VITON 1

76 F91500500 TAB, 14X9X60, UNI 6604 1

77 F73210589 RING GEAR SUPPORT RING 1

78 F99366700 SCREW, M10X25, UNI 5739 2

79 F91511000 TAB, 22X14X80 UNI 6604 1

80 F74213255 RING GEAR STOP 1

81 F73020235 CRANKSHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1

F10077135 RING GEAR, Z47 R2.238, HELICAL 1

F10077235 RING GEAR, Z49 R2.722, HELICAL 1

83 F99371000 SCREW, M10X40, UNI 5931 15

84 F73210113 REDUCTION GEAR COVER 1

85 F90415000 OR, Ø 253.6X3.53 2

86 F73210013 REDUCTION GEAR BOX 1

87 F91881000 CY. ROLLER BEARING 2

88 F73210384 SIDE SEAL 2

89 F73010013 PUMP CASING 1

90 F73160022 CASING COVER 1

91 F99368600 SCREW, M10X30, UNI 5931 14

92 F73150222 BEARING COVER 1

93 F98218300 PLUG, G1/2”X13, NICKEL 2

REPAIR KITS

KIT

NUMBER

Positions

Included

F2139 (MW45A)

Plunger Packing Kit

33, 35, 37,

38, 40, 41,

F2140 (MW50A)

Plunger Packing Kit

33, 35, 37,

38, 40, 41,

F2141 (MW55A)

Plunger Packing Kit

33, 35, 37,

38, 40, 41,

F2142

Inlet

Valve Kit

13 30

F2062 Outlet

Valve Kit

F2147 (MW45A)

Complete Seals Kit

6, 7, 16, 20, 23,

24, 32, 33, 35,

37, 38, 40, 41, 46,

48, 66, 75, 85, 88

F2148 (MW50A)

Complete Seals Kit

6, 7, 16, 20, 23,

24, 32, 33, 35,

37, 38, 40, 41, 46,

48, 66, 75, 85, 88

F2149 (MW55A)

Complete Seals Kit

6, 7, 16, 20, 23,

24, 32, 33, 35,

37, 38, 40, 41, 46,

48, 66, 75, 85, 88

Ref 300790 Rev.D

F2150

Conn,Rod

57, 58 57, 58 57, 58

F2151

Conn. Rod

Kit

Conn. Rod

Kit

Page 24

11-12

F2153

Kit

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MWN36 SERIES

Ref 300790 Rev.D

11-12

Page 25

GENERAL PUMP

A member of the Interpump Group

MWN36 SERIES

temPart #

1 F73120415 MANIFOLD 1

2 F98218600 PLUG, G 1/4“X14, SS 3

36208801BALL VALVE ASSY.

3 F

4 F36306766 INLET VALVE HOUSING 3

5 F90526000 ANTI-EXTRUSION RING, Ø51.5X56X1.5 3

6 F90389000 OR, Ø50.47x2.62 6

36209051INTERNAL VALVE GUIDE

8 F

9 F94760000 SPRING, Ø 28.3X30.7 3

10 F36206151 INLET/OUTLET VALVE GUIDE 6

11 F36715101 INLET VALVE UNIT

12 F74210651 HP VALVE GUIDE SPACER 3

13 F90358400 OR. Ø 10.82X1.78 3

90204600PLUG G 1/4"X13, SS

14F

15 F73213756 VALVE HOUSING SPACER RING 3

90526500ANTI-EXTRUSION RING, Ø 51.7X56.2X1.5

16F

36206966OUTLET VALVE HOUSING

17F

18 F90527600 ANTI-EXTRUSION RING, Ø 67.7X72.2X1.5 3

19 F90391100 OR, Ø 66.35X2.62 6

20 F94760500 SPRING, Ø 28.5X32 3

21 F36715301 OUTLET VALVE UNIT 3

74215856HP OUTLET VALVE PLUG

22F

90528000ANTI-EXTRUSION RING, Ø 67.7X72.2X1.5

23F

24 F94774900 SPRING, Ø 58X45.4, SS 3

25 F74215991 OUTLET VALVE HOUSING RING 3

26 F99514700 SCREW, M16X55, UNI 5931 8

27 F73212356 VALVE COVER, SS 1

28 F99522200 SCREW, M16x180 8

29 F96710500 WASHER, Ø 10x18x0.9, SS, PTFE 3

30 F99383000 SCREW, M10x140, UNI 5737 3

F73040009 PLUNGER, Ø 32 3

F73040109 PLUNGER, Ø 36 3

F73040209 PLUNGER, Ø 40 3

32 F90408500 OR, Ø49.21X3.53 3

33 F90382500 OR, Ø10.78X2.62 6

F73213056 PLUNGER LINER, Ø 32 3

F73213156 PLUNGER LINER, Ø 36 3

F73213256 PLUNGER LINER, Ø 40 3

35 F90371000 OR, Ø 81x2 6

F73100191 PISTON HEAD RING, Ø 32 3

F78100291 PISTON HEAD RING, Ø 36 3

F78100091 PISTON HEAD RING, Ø 40 3

F90378800 ALT. SEAL RING, Ø 32,HP 3

F90282000 ALT. SEAL RING, Ø 36,HP 3

F90283200 ALT. SEAL RING, Ø 40,HP 3

F90278400 RESTOP RING, Ø 32 3

F90281800 RESTOP RING, Ø 36 3

F90283800 RESTOP RING, Ø 40 3

F73212492 SEAL SUPPORT, Ø 32 3

F73212592 SEAL SUPPORT, Ø 36 3

F73212692 SEAL SUPPORT, Ø 40 3

F90278000 ALT. SEAL RING, Ø 32, LP 3

F90279800 ALT. SEAL RING, Ø 36, LP 3

F90282800 ALT. SEAL RING, Ø 40, LP 3

41 F96735500 WASHER, Ø 16X65X1 3

42 F73150022 CLOSED INSPECTION COVER 1

43 F73050156 PISTON GUIDE ROD 3

escription

TY.

Item Part # Description QTY.

44 F90414800 OR, Ø 202.8X3.53 2

73150156OPEN INSPECTION COVER

45F

46 F90168500 RAD. RING, Ø 40X72X7/8.5 3

47 F97674000 ELASTIC PIN, Ø 5X16, UNI 6876 3

99369700SCREW, M10X35, UNI 5739

48F

F73050043 PISTON GUIDE 3

73050243PISTON GUIDE, +0.10

50 F73210674 LIFTING BRACKET 2

51 F99523100 SCREW, M16X30, UNI 5931 4

73030101CONNECTING ROD ASSY.

52F

53 F99378800 CONROD SCREW, M10X1.5X80 6

90928300CONROD HEAD SEMI-BUSHING, LOWER

90928400CONROD HEAD SEMI-BUSHING, LOWER, +0.25

F90928500 CONROD HEAD SEMI-BUSHING, LOWER, +0.55 3

F90928000 CONROD HEAD SEMI-BUSHING, UPPER 3

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

F90928200 CONROD HEAD SEMI-BUSHING, UPPER, +0.55 3

90915800CONROD FOOT BUSHING

57F

58 F90069000 STOP RING, Ø 32, UNI 7437 6

59 F97744000 SPINDLE 6

60 F99183800 SCREW, M6X14, UNI 5931 6

61 F73200064 FOOT 2

98206000HOLE PLUG, Ø 15, TTN18

62F

63 F98233100 OIL FILLING PLUG, G1” WITH ROD 1

64 F90361600 OR, 34.65X1.78 1

65 F73210295 TUBE FOR OIL FILLING PLUG, G1” 1

66 F91854000 CYL. ROLLER BEARING 1

F10076735 PINION, Z24 R1.875, HELICAL 1

F10076835 PINION, Z21 R2.238, HELICAL 1

F10076935 PINION, Z18 R2.7225, HELICAL 1

68 F97623000 TMP. CY. PIN, Ø 10X24, UNI 6364 2

69 F90101000 STOP RING, Ø 120, UNI 7437 1

70 F91859900 ADJUST. ROLLER BEARINGS 1

71 F73210455 BEARING SUPPORT RING 1

72 F90081000 STOP RING, Ø 55, UNI 7435 1

73 F90172400 RAD. RING, Ø 55Xx75X8, VITON 1

74 F91500500 TAB, 14X9X60, UNI 6604 1

75 F73210589 RING GEAR SUPPORT RING 1

76 F99366700 SCREW, M10X25, UNI 5739 2

77 F91511000 TAB, 22X14X80, UNI 6604 1

78 F74213255 RING GEAR STOP 1

79 F73020035 BEND SHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1

F10077135 RING GEAR, Z45 R1.875, HELICAL 1

F10077235 RING GEAR, Z49 R2.722, HELICAL 1

81 F99371100 SCREW, M10X40, UNI 5931 15

82 F73210113 REDUCTION GEAR COVER 1

83 F90415000 OR, 253.6X3.53 2

84 F73210013 REDUCTION GEAR BOX 1

85 F91881000 CYL. ROLLER BEARING 2

86 F73210384 SIDE SEAL 2

87 F73010013 PUMP CASING 1

88 F73160022 CASING COVER 1

89 F99368500 SCREW, M10X30, UNI 5931 14

90 F73150222 BEARING COVER 1

91 F98218100 PLUG, G1/2”X13, NICKEL 2

92 F93197100 SEAL WASHER, G 1/2", SS 5

REPAIR KITS

KIT

NUMBER

Positions

Included

F2136 (MWN32A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2137 (MWN36A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2138 (MWN40A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2055

Valve Kit

11, 12, 21, 23

F2144 (MWN32A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2145 (MWN36A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2146 (MWN40A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64, 73, 83, 86

F2150

Conn,Rod Kit

55, 56 55, 56 55, 56

Ref 300790 Rev.D

F2151

Conn. Rod Kit

11-12

Page 26

F2153

Conn. Rod Kit

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MWN50 SERIES

Ref 300790 Rev D

11-12

Page 27

GENERAL PUMP

A member of the Interpump Group

MWN50 SERIES

temPart #

1 F73120515 MANIFOLD 1

2 F98218600 PLUG, G 1/4"X14, SS 3

36208701BALL VALVE ASSY.

3 F

4 F36306666 INLET VALVE HOUSING 3

5 F90527000 ANTI-EXTRUSION RING, Ø 61.2X67X2 3

6 F90410500 OR Ø 59.62 X 3.53 (4237) 6

36208951INTERNAL VALVE GUIDE

8 F

9 F94769800 SPRING, Ø 41.5X37.9 3

10 F36206051 INLET/OUTLET VALVE GUIDE 6

11 F36715001 INLET VALVE UNIT

12 F74210551 HP VALVE GUIDE SPACER 3

13 F90358400 OR, Ø 10.82X1.78 3

90204600PLUG, G 1/4"X13, SS

14F

15 F93197100 SEAL WASHER, G 1/2", SS 5

90527300ANTI-EXTRUSION RING,Ø 61.4X67.2X1.5

16F

36206866OUTLET VALVE HOUSING

17F

18 F90529000 ANTI-EXTRUSION RING, Ø 61.4X67.2X1.5 3

19 F90413400 OR, Ø 75.8X3.53 6

20 F94770000 SPRING, Ø 41.5X41.1 3

21 F36715201 OUTLET VALVE UNIT 3

73213656OUTLET VALVE PLUG, LP

22F

90529300ANTI-EXTRUSION RING, Ø 77.4X83.2X1.5

23F

24 F94800100 SPRING, Ø 75X49.6, SS 3

25 F73213891 OUTLET VALVE HOUSING RING 3

26 F99514700 SCREW, M16X55M UNI 5931 8

27 F73212356 VALVE COVER, SS 1

28 F99522200 SCREW, M16X180, UNI 5931 8

29 F96710500 WASHER, Ø 10X18X0.9, SS, PTFE 3

30 F99383000 SCREW, M10X140, UNI 5737 3

F73040309 PLUNGER, Ø 45 3

F73040409 PLUNGER, Ø 50 3

F73040509 PLUNGER, Ø 55 3

32 F90411500 O-RING, Ø 63.5X3.53 3

33 F90382500 O-RING, Ø 10.785X2.62 6

F73213356 PLUNGER LINER, Ø 45 3

F73213456 PLUNGER LINER, Ø 50 3

F73213556 PLUNGER LINER, Ø 55 3

35 F90371000 OR, Ø 81X2 6

F78100391 PISTON HEAD RING, Ø 45 3

F73100291 PISTON HEAD RING, Ø 50 3

F73100391 PISTON HEAD RING, Ø 55 3

F90285000 ALT. SEAL RING, HP, Ø 45 3

F90286300 ALT. SEAL RING, HP, Ø 50 3

F90287300 ALT. SEAL RING, HP, Ø 55 3

F90284800 RESTOP RING, Ø 45 3

F90281800 RESTOP RING, Ø 50 3

F90287500 RESTOP RING, Ø 55 3

F73212792 SEAL SUPPORT, Ø 45 3

F73712892 SEAL SUPPORT, Ø 50 3

F73212992 SEAL SUPPORT, Ø 55 3

F90284600 ALT. SEAL RING, LP, Ø 45 3

F90286000 ALT. SEAL RING, LP, Ø 50 3

F90287000 ALT. SEAL RING,LP, Ø 55 3

41 F96735500 WASHER, Ø16X65X1 3

42 F73150022 CLOSED INSPECTION COVER 1

43 F73050156 PISTON GUIDE ROD 3

escription

TY.

Item Part # Description QTY.

44 F90414800 OR, Ø 202.8X3.53 2

73150156OPEN INSPECTION COVER

45F

46 F90168500 RAD. RING, Ø 40X72X7/8.5 3

47 F97674000 ELASTIC PIN, Ø 5X16, UNI 6876 3

99369700SCREW, M10X35, UNI 5739

48F

F73050043 PISTON GUIDE 3

73050243PISTON GUIDE, +0.10

50 F73210674 LIFTING BRACKET 2

51 F99523100 SCREW, M16x30, UNI 5931 4

73030101CONNECTING ROD ASSY.

52F

53 F99378800 CONROD SCREW, M10X1.5X80 6

90928300CONROD HEAD SEMI-BUSHING, LOWER

90928400CONROD HEAD SEMI-BUSHING, LOWER, +0.25

F90928500 CONROD HEAD SEMI-BUSHING, LOWER, +0.50 3

F90928000 CONROD HEAD SEMI-BUSHING, UPPER 3

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

F90928200 CONROD HEAD SEMI-BUSHING, UPPER, +0.50 3

90915800CONROD FOOT BUSHING

57F

58 F90069000 STOP RING, Ø 32, UNI 7437 6

59 F97744000 SPINDLE 6

60 F99183800 SCREW, M6x14, UNI 5931 6

61 F73200064 FOOT 2

98206000HOLE PLUG. Ø 15, TTN18

62F

63 F98233100 OIL FILLING PLUG, G1” WITH ROD 1

64 F90361600 OR, Ø 34.65X1.78 1

65 F73210295 TUBE FOR OIL FILLING PLUG, G1” 1

66 F91854000 CYL. ROLLER BEARING 1

F10076735 PINION, HELICAL, Z24 R1.875 1

F10076835 PINION, HELICAL, Z21 R2.238 1

F10076935 PINION, HELICAL, Z18 R2.722 1

68 F97623000 TMP. CYL. PIN. Ø 10X24, UNI 6364 2

69 F90101000 STOP RING, Ø 120, UNI 7437 1

70 F91859900 ADJUST ROLLER BEARING 1

71 F73210455 BEARING SUPPORT RING 1

72 F90081000 STOP RING, Ø 55, UNI 7435 1

73 F90172400 RAD. RING, Ø 55X75X8, VITON 1

74 F91500500 TAB, 14X9X60, UNI 6604 1

75 F73210589 RING GEAR SUPPORT RING 1

76 F99366700 SCREW, M10X25, UNI 5739 2

77 F91511000 TAB, 22X14X80, UNI 6604 1

78 F74213255 RING GEAR STOP 1

79 F73020035 CRANKSHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1

F10077135 RING GEAR, Z47 R2.238, HELICAL 1

F10077235 RING GEAR, Z49 R2.722, HELICAL 1

81 F99371100 SCREW, M10X40, UNI 5931 15

82 F73210100 REDUCTION GEAR COVER 1

83 F90415000 OR, Ø 253.6.X3.53 2

84 F73210013 REDUCTION GEAR BOX 1

85 F91881000 CYL ROLLER BEARING 2

86 F73210384 SIDE SEAL 2

87 F73010013 PUMP CASING 1

88 F73160022 CASING COVER 1

89 F99368500 SCREW, M10X30, UNI 5931 14

90 F73150222 BEARING COVER 1

91 F98218100 PLUG, G1/2”X13, SS 2

REPAIR KITS

KIT

NUMBER

Positions

Included

F2139 (MWN45A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2140 (MWN50A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40,

F2141 (MWN55A)

Plunger Packing Kit

32, 33, 35,

37, 38, 40

F2048

Valve Kit

11, 12, 23

F2159 (MWM45A)

Complete Seals Kit

5, 6, 13, 16, 18, 19,

23, 32, 33, 35, 37, 38, 40, 44, 46, 64,

73, 83, 86

F2160 (MWN50A)

Complete Seals Kit

5, 6, 13, 16, 18, 19,

23, 32, 33, 35, 37, 38, 40, 44, 46, 64,

73, 83, 86

F2161 (MWN55A)

Complete Seals Kit

5, 6, 13, 16, 18, 19, 23, 32, 33, 35, 37, 38, 40, 44, 46,

64,

73, 83, 86

F2150

Conn,Rod

55, 56 55, 56 55, 56

F2151

Conn. Rod

Kit

Ref 300790 Rev.D

11-12

F2153

Conn. Rod

Kit

Page 28

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MWR40 SERIES

Ref 300790 Rev.D

11-12

Page 29

GENERAL PUMP

A member of the Interpump Group

MWR40 SERIES

temPart #

1 F73120215 MANIFOLD-NPT 1

2 F10744401 VALVE OPENING DEVICE 3

36208801BALL VALVE ASSEMBLY

3 F

4 F36306766 INLET VALVE HOUSING 3

5 F90526000 ANTIEXTRUSION RING Ø51.5x56x1.5 3

6 F90389000 OR, Ø50.47X2.62 3

36209051INTERNAL VALVE GUIDE

8 F

9 F94760000 SPRING Ø 28.3X30.7 3

10 F36206151 INLET/OUTLET VALVE GUIDE 3

11 F36715101 INLET VALVE UNIT 3

12 F74210651 HP VALVE GUIDE SPACER

13 F73212270 VALVE HOUSING SPACER RING 3

90526500ANTIEXTRUSION RING Ø 51.7X56.2X1.5

14F

15 F36206966 OUTLET VALVE HOUSING 3

90527600ANTIEXTRUSION RING Ø 67.7X72.2X1.5

16F

90391100OR, Ø 66.35X2.62

17F

18 F94760500 SPRING Ø 28.5X32 3

19 F36715301 OUTLET VALVE UNIT 3

20 F74211070 HP OUTLET VALVE PLUG 3

21 F90528000 ANTIEXTRUSION RING Ø 67.7X72.2X1.5 3

94775000SPRING Ø 58X45.4

22F

74210866OUTLET VALVE HOUSING RING

23F

24 F99514700 SCREW, M16x180 8

25 F73210715 VALVE COVER 1

26 F99522200 SCREW, M16x180 8

27 F96710500 WASHER Ø 10X18X0.9, SS, PTFE 3

28 F99383000 SCREW, M10X140 3

29 F73040209 PLUNGER Ø 40 3

30 F90389800 OR, Ø 56.82x2.62 6

31 F90382500 OR, Ø 10.78x2.62 6

32 F73100456 HEAD PACKING RING, Ø 40 3

33 F90371000 OR, Ø 81x2 6

34 F94772000 SPRING Ø 47x30-INOX 3

35 F73213956 SPRING RING, Ø40 3

36 F73214382 SCRAPER, Ø 40 3

37 F90565000 PACKING, Ø 40x53x15 3

38 F90521000 ANTI-EXT. RING, Ø 40x53x2 3

39 F73214760 SUPPORT RING, Ø 40 3

40 F73215156 PACKING SUPPORT, Ø40 3

41 F90282800 ALT. SEAL RING,LP, Ø 55 3

44 F96735500 WASHER, Ø 16x65x1 3

45 F73150022 CLOSED INSPECTION COVER 1

46 F73050156. PISTON GUIDE ROD 3

47 F90414800 OR, Ø 202.8X3.53

48 F73150156 OPEN INSPECTION COVER 1

49 F90168500 RAD. RING, Ø 40X72X7/8.5 3

50 F97674000 ELASTIC PIN, Ø 5X16, UNI 6876 3

51 F99369700 SCREW, M10X35, UNI 5739 3

F73050043 PLUNGER GUIDE 3

F73050243 PLUNGER GUIDE, +0.10 3

53 F73210674 LIFTING BRACKET 2

54 F99523000 SCREW, M16x30, UNI 5931 4

55 F73030101 CONNECTING ROD ASSY. 3

56 F99378800 CONROD SCREW, M10X1.5X80 6

F90928300 CONROD HEAD SEMI-BUSHING, LOWER 3

F90928400 CONROD HEAD SEMI-BUSHING, LOWER, +0.25 3

F90928500 CONROD HEAD SEMI-BUSHING, LOWER, +0.50 3

F90928000 CONROD HEAD SEMI-BUSHING, UPPER 3

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

F90928200 CONROD HEAD SEMI-BUSHING, UPPER, +0.50 3

61 F90069000 STOP RING, Ø 32, UNI 7437 6

62 F97744000 SPINDLE 6

63 F99183700 SCREW, M6x14 UNI 5931 6

64 F73200064 PUMP FEET 2

REPAIR KITS

KIT

NUMBER

Positions

Included

Plunger Packing Kit

F2162

30, 31, 33, 36, 37, 38,

escription

F2055

Valve Kit

11, 12, 19,

F2166

Complete Seals Kit

5, 6, 14, 16, 17, 21, 30, 31, 33, 36, 37, 38, 41, 47,

49, 67, 76, 86, 89

F2150

Conn,Rod Kit

58, 59 58, 59 58, 59 64

Conn. Rod Kit

F2151

TY.

Item Part # Description QTY.

65 F98206000 HOLE PLUG. Ø 15, TTN18 6

98233100OIL FILLING PLUG, G1” WITH ROD

66F

67 F90361600 OR, Ø 34.65X1.78 1

68 F73210295 TUBE FOR OIL FILLING PLUG, G1” 1

91854000CYL. ROLLER BEARING

69F

F10076735 PINION, HELICAL, Z24 R1.875 1

10076835PINION, HELICAL, Z21 R2.238

F10076935 PINION, HELICAL, Z18 R2.722 1

71 F97623000 TMP. CYL. PIN. Ø 10X24, UNI 6364 2

90101000STOP RING, Ø 120, UNI 7437

72F

73 F91859900 ADJUST ROLLER BEARING 1

73210455BEARING SUPPORT RING

74F

90081000STOP RING, Ø 55, UNI 7435

75F

76 F90172400 RAD. RING, Ø 55X75X8, VITON 1

77 F91500500 TAB, 14X9X60, UNI 6604 1

78 F73210589 RING GEAR SUPPORT RING 1

79 F99366700 SCREW, M10X25, UNI 5739 2

91511000TAB, 22X14X80, UNI 6604

80F

81 F74213255 RING GEAR STOP 1

82 F73020035 CRANKSHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1

F10077135 RING GEAR, Z47 R2.238, HELICAL 1

10077235RING GEAR, Z49 R2.722, HELICAL

84 F99371000 SCREW, M10X40, UNI 5931 15

85 F73210100 REDUCTION GEAR COVER 1

86 F90415000 OR, Ø 253.6.X3.53 2

87 F73210013 REDUCTION GEAR BOX 1

88 F91881000 CYL ROLLER BEARING 2

89 F73210384 SIDE SEAL 2

90 F73010013 PUMP CASING 1

91 F73160022 CASING COVER 1

92 F99368600 SCREW, M10X30, UNI 5931 14

93 F73150222 BEARING COVER 1

94 F98218300 PLUG, G 1/2” x 13, NICKEL 2

95 F96751400 ALUMINUM WASHER, Ø 21.5X27X1.5 2

F10077355 PINION, HELICAL, Z24 R1.875 1

F10077455 PINION, HELICAL, Z21 R2.238 1

97 F73215513 GEAR BOX COVER 1

92 F99368500 SCREW, M10X30, UNI 5931 8

98 F73150322 OPEN BEARING COVER 1

99 F90391450 OR, Ø75.87X2.62 1

100 F73215654 RING FOR DIRECT DRIVE 1

101 F90195000 RING, RAD, Ø 90X110X12, VITON 1

42 F73215754 P.T.O. OUTLET 1

43 F99367200 SCREW, M10X25, UNI 5931 6

92 F99368500 SCREW, M10X30, UNI 5931 8

98 F73150322 OPEN BEARING COVER 1

99 F90391450 OR, Ø75.87X2.62 1

101 F90195000 RING, RAD, Ø 90X110X12 1

F2153

Conn. Rod Kit

F2152

Rail Kit

WITH HYDRAULIC MOTOR

DIRECT DRIVE

WITH AUXILIARY P.T.O.

Ref 300790 Rev.D

08-12

Page 30

GENERAL PUMP

16. EXPLODED VIEW AND PARTS LIST

A member of the Interpump Group

MWR50 SERIES

Ref 300790 Rev.D

11-12

Page 31

GENERAL PUMP

Item Part # Description QTY.

1 F73120315 MANIFOLD-NPT 1

10744501VALVE OPENING DEVICE

2 F 3 F96751400 WASHER, Ø 21.5X27X1.5 5

98218500STEEL PLUG, 1/2"

4 F 5 F36206666 INLET VALVE HOUSING 3

90527000ANTI-EXTRUSION RING, Ø 61.2X67X2

6 F 7 F90410500 OR, Ø 59.62X3.53 3

9 F36208701 BALL VALVE ASSY. 3 10 F36208951 INTERNAL VALVE GUIDE 3 11 F94769800 SPRING, Ø41.5X37.9 12 F36206051 INLET VALVE GUIDE 3 13 F36715001 INLET VALVE UNIT 3 14 F73210815 INLET VALVE COVER 1

F73040309 PLUNGER, Ø 45X117 3

F73040409 PLUNGER Ø 50X117 3

73040509PLUNGER Ø 55X117

16 F90414200 OR, Ø 85.32X3.53 3

96710500WASHER, Ø 10X18X0.9,SS, PTFE

17F

99383000SCREW, M10X140

18F 19 F99514200 SCREW, M16x45 16 20 F90358400 OR, Ø 10.82X1.78 3 21 F98204600 PLUG, G ¼”X13, SS 3 22 F36206766 OUTLET VALVE HOUSING 3 23 F90526000 ANTI-EXTRUSION RING, Ø 51.5X56X1.5 3

90389000OR, Ø 50.47X2.62

24F

36208801BALL VALVE ASSY.

26F 27 F36209051 INTERNAL VALVE GUIDE 3 28 F94760500 SPRING, Ø 28.5X32 3 29 F36206151 OUTLET VALVE GUIDE 3 30 F36207701 OUTLET VALVE UNIT 3 31 F73210915 OUTLET VALVE COVER 1 32 F90412000 OR, Ø 68.26X3.53 3

F90390300 OR, Ø 60X2.262 (MWR45A) 3

F90391330 OR, Ø 69.52X2.62 3 F94777000 SPRING, Ø 61X35, INOX (MWR55) 3

F94773500 SPRING, Ø 54X38.5 3

35 F90382500 OR, Ø 10.78X2.62 6

F73100556 HEAD PACKING RING, Ø 45 3

F73100656 HEAD PACKING RING, Ø 50 3 F73100756 HEAD PACKING RING, Ø 55 3 F73214056 SPRING RING, Ø 45 3

F73214156 SPRING RING, Ø 50 3 F73214256 SPRING RING, Ø 55 3 F73214482 SCRAPER, Ø 45 3

F73214582 SCRAPER, Ø 50 3 F73214682 SCRAPER, Ø 55 3 F90567500 PACKING, Ø 45X58X15 3

F90569500 PACKING, Ø 50X63X15 3 F90572000 PACKING, Ø 55X68X15 3 F90523500 ANTI-EXT. RING, Ø 45X58X2 3

F90524300 ANTI-EXT. RING, Ø 50X63X2 3 F90526600 ANTI-EXT. RING, Ø 55X68X2 3 F73214860 SUPPORT RING, Ø 45 3

F73214960 SUPPORT RING, Ø 50 3 F73215060 SUPPORT RING, Ø 55 3 F73215256 PACKING SUPPORT, Ø 45 3

F73215356 PACKING SUPPORT, Ø 50 3 F73215456 PACKING SUPPORT, Ø 55 3 F90284600 WASHER, Ø 45X53X5.5 L.P. 3 F90286000 WASHER, Ø 50X58X5.5 L.P. 3

F90287000 WASHER, Ø 55X63X5.5 L.P. 3 44 F90371000 OR, Ø 81X2 6 45 F99521200 SCREW, M16X150 8

46 F96735500 WASHER, Ø 16X65X1 3

47 F73150022 CLOSED INSPECTION COVER 1

48 F73050156 PLUNGER GUIDE ROD 3

49 F90414800 OR, Ø202.8X3.53 2

50 F73150122 OPEN INSPECTION COVER 1

51 F90168500 RAD. RING, Ø40X72X7/8.5 3

REPAIR KITS

KIT

NUMBER

Positions Included

F2163

(MWR45A)

Plunger Pack.

33, 35, 38,

39, 40, 43,

F2164

(MWR50A)

Plunger Pack.

33, 35, 38,

39, 40, 43,

A member of the Interpump Group

F2165

(MWR55A)

Plunger Pack.

33, 35, 38, 39, 40, 43,

F2142

Inlet

Valve

13 30

F2062 Outlet

Valve

F2167

(MWR45A)

Complete Seals Kit

6, 7, 16, 20, 23,

24, 32, 33, 35, 38, 39, 40, 43, 44, 49, 51, 69,

48, 88, 91

MWR45-50-55 SERIES

Item Part # Description QTY.

97674000ELASTIC PIN, Ø 5X16, UNI 6876

3 3

52F

99369700SCREW, M10X35, UNI 5739

53F

F73050043 PLUNGER GUIDE 3

F73050243 PLUNGER GUIDE +0.10 3 55 F73210674 LIFTING BRACKET 2 56 F99513000 SCREW, M16x30, UNI 5931 4 57 F73030101 CONNECTING ROD ASSY. 3

99378800CONNECTING ROD SCREW, M10X1.5X80

58F

F90928000 CONROD HEAD SEMI-BUSHING, LOWER 3

90928400CONROD HEAD SEMI-BUSHING, LOWER, +0.25

F90928500 CONROD HEAD SEMI-BUSHING, LOWER, +0.50 3

F90928300 CONROD HEAD SEMI-BUSHING, UPPER 3 61

F90928100 CONROD HEAD SEMI-BUSHING, UPPER, +0.25 3

F90928200 CONROD HEAD SEMI-BUSHING, UPPER, +0.50 3 63 F90069000 STOP RING, Ø 32 UNI 7437 6 64 F94744000 SPINDLE 3

99183700SCREW, M6X14, UNI 5931

65F 66 F73200064 FOOT 2 67 F98206000 HOLE PLUG, Ø 15 6

98233100OIL FILLING PLUG, G1”, WITH ROD

68F 69 F90361600 OR, 34.65X1.78 1

73210295TUBE FOR OIL FILLING PLUG, G1 ”

70F 71 F91854000 CY. ROLLER BEARING 1

F10076735 PINION, Z24 R1.875, HELICOL 1 72

F10076835 PINION, Z21 R2.238, HELICOL 1

10076935PINION, Z18 R2.722, HELICOL

F 73 F97623000 TMP. CYL. PIN, Ø 10X24 2 74 F90101000 STOP RING, Ø 120 1 75 F91859900 ADJUST. ROLLER BEARING 1 76 F73210455 BEARING SUPPORT RING 1 77 F90081000 STOP RING, Ø 55 1 78 F90172400 RAD. RING, Ø 55X75X8, VITON 1 79 F91500500 TAB, 14X9X60, UNI 6604 1 80 F73210589 RING GEAR SUPPORT RING 1 81 F99366700 SCREW, M10X25, UNI 5739 2 82 F91511000 TAB, 22X14X80 UNI 6604 1 83 F74213255 RING GEAR STOP 1 84 F73020235 CRANKSHAFT C. 70 1

F10077035 RING GEAR, Z45 R1.875, HELICAL 1 85

F10077135 RING GEAR, Z47 R2.238, HELICAL 1

F10077235 RING GEAR, Z49 R2.722, HELICAL 1 86 F99371000 SCREW, M10X40, UNI 5931 15 87 F73210113 REDUCTION GEAR COVER 1 88 F90415000 OR, Ø 253.6X3.53 2 89 F73210013 REDUCTION GEAR BOX 1 90 F91881000 CY. ROLLER BEARING 2 91 F73210384 SIDE SEAL 2 92 F73010013 PUMP CASING 1 93 F73160022 CASING COVER 1 94 F99368600 SCREW, M10X30, UNI 5931 14 95 F73150222 BEARING COVER 1 96 F98218300 PLUG, G1/2”X13, NICKEL 2

F10077355 PINION, Z24, R1.875, HELICOL 1 97

F10077455 PINION, Z21, R2.238, HELICOL 1 98 F73215513 GEAR BOX COVER 1

94 F99368600 SCREW, M1-X30 8 99 F73150322 OPEN BEARING COVER 1

100 F90391450 OR, Ø 78.87X2.62 1 101 F73215654 RING FOR DIRECT DRIVE 1 102 F90195000 RING, RAD, Ø 90X110X12, VITON 1

94 F99368600 SCREW, M10X30, UNI 5931 8 99 F73150322 OPEN BEARING COVER 1

100 F90391450 OR, Ø 78.87X2.62 1 102 F90195000 RING, RAD, Ø 90X110X12, VITON 1 103 F73215754 P.T.O. OUTLET 1 104 F99367200 SCREW, M10X25 UNI 6

F2168

(MWR50A)

Complete Seals

6, 7, 16, 20, 23,

24, 32, 33, 35, 38, 39, 40, 43, 44, 49, 51, 69,

48, 88, 91

F2169 (MWR55A)

Complete Seals

6, 7, 16, 20, 23,

24, 32, 33, 35, 38, 39, 40, 43, 44, 49, 51, 69,

48, 88, 91

WITH HYDRAULIC PACK

DIRECT DRIVE

WITH AUXILIARY P.T.O.

F2150

Conn. Rod

60, 61 60, 61 60, 61 56, 66

F2151

Conn. Rod

F2153

Conn. Rod

Ref 300790 Rev.D

Mounting

Page 32

F2152

Feet

11-12

3 3

GENERAL PUMP

A member of the Interpump Group

MW/S SERIES

17. REPAIR TOOLS

Pump maintenance may be carried out using simple tools for assembling and disassembling components. The following tools are available:

KIT For Assembly:

• Shaft (con-rod interlocking) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27566200

• Bearing on crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27604700

• Pinion bearing on reduction gear box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27604900

• Crankshaft bearing on the reduction gear box . . . . . . . . . . . . . . . . . . . . . . . . . . F27605000

• Crankshaft bearing on the bearing cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27605000

B•Oil seal insertion tool, MW/S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27605300

B•Oil seal insertion cone, MW/S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27634400

• Bearing on pinion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27604800

• Pinion seal ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27634900 plus F27635000

• Outlet valve housing O-ring MW32A, MWS36A, MWS40A . . . . . . . . . . . . . . . . F27516000

KIT For Disassembly:

B•Oil seal extraction tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27644300

B•Bolt for oil seal extraction tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99366900

• Shaft (con-rod interlocking) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27566200

• Outlet and suction valve units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27516400

• Suction valve housing MW32A, MWS36A, MWS40A . . . . . . . . . . . . . . . . . . . . . F27516200

C•Cylinder removal tool w/handle, MW/S series. . . . . . . . . . . . . . . . . . . . . . . . . . . F27632500

A•Slide hammer, MW/S valve tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F26019400

A•8mm x 10mm adapter, MW slide hammer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F27513600

A•32mm collett for MW/S discharge seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520339

A•42mm collett for MW/S inlet valve seat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520340

RECOMMENDED REPAIR KITS

FKITMWV - MW/S Valve removal / Installation Tool Kit A

Includes: F26019400 Slide Hammer Qty. 1

F27513600 10mm Adapter Qty. 1 520339 32mm Collet Qty. 1 520340 42mm Collet Qty. 1

FKITMWP - Piston Oil Seal Removal / Installation Tool Kit B

Includes: F27605300 Insertion Tool Qty. 1

F27634400 Insertion Cone Qty. 1 F27644300 Extraction Tool Qty. 1 99366900 Extraction Tool Bolt Qty. 1

F27632500 - Cylinder Removal Tool with Handle - MW - Tool Kit C

Includes: F27632500 Spacer with Handle Qty 1

Ref 300790 Rev.D

11-12

Page 33

GENERAL PUMP

A member of the Interpump Group

18. MAINTENANCE LOG

OIL CHANGE

GREASE

PACKING

REPLACEMENT

MW/S SERIES

HOURS & DATE

PLUNGER

REPLACEMENT

VALVE

REPLACEMENT

GP Companies, Inc.

1174 Northland Drive

Mendota Heights, MN 55120

Phone:651.686.2199 Fax: 800.535.1745

www.generalpump.com email: sales@gpcompanies.com

Ref 300790 Rev.D

11-12

Page 34

General Pump MW User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual