background image

Pump Pulley

Outside Diameter

(inches)

MOTOR PULLEY OUTSIDE DIAMETER (inches)

2-1/2 2-3/4

3

3-1/4 3-1/2 3-3/4

4

4-1/4 4-1/2 4-3/4

5

5-1/4 5-1/2 5-3/4

6

6-1/2

7

8

9

10

11

12

13

14

2-1/2

1725

2-1/4

1574 1725

3

1431 1590 1725

3-1/4

1310 1460 1604 1725

3-1/2

1210 1346 1480 1615 1725

3-3/4

1125 1250 1375 1500 1625 1725

4

1050 1168 1283 1400 1518 1634 1725

4-1/4

985 1094 1201 1311 1420 1530 1640 1725

4-1/2

926 1030 1131 1235 1339 1440 1543 1650 1725

4-3/4

876

974 1070 1168 1285 1362 1460 1558 1652 1725

5

830

922 1013 1105 1198 1290 1382 1473 1568 1660 1725

5-1/4

788

875

963 1050 1137 1225 1312 1400 1487 1575 1662 1725

5-1/2

750

834

917 1000 1082 1167 1250 1333 1417 1500 1581 1646 1725

5-3/4

715

795

875

955 1032 1113 1192 1270 1350 1430 1510 1575 1650 1725

6

685

760

937

913

990 1065 1140 1217 1290 1370 1450 1509 1581 1653 1725

6-1/2

630

700

771

840

910

980 1050 1120 1190 1260 1330 1393 1460 1526 1592 1725

7

584

648

713

778

843

907

973 1039 1102 1168 1231 1294 1355 1417 1500 1602 1725

8

507

564

620

676

734

789

845

902

959 1016 1072 1132 1186 1240 1312 1421 1509 1725

9

450

500

550

600

650

700

750

800

850

900

950 1006 1054 1102 1166 1263 1342 1533 1725

10

405

450

495

540

585

630

675

720

765

810

855

906

949

992 1050 1137 1208 1380 1553 1725

11

366

407

448

488

530

570

610

652

692

733

774

823

863

902

954 1034 1098 1255 1411 1568 1725

12

336

373

410

446

485

522

560

596

634

671

708

755

791

827

875

947 1006 1150 1294 1438 1581 1725

13

309

343

378

412

447

480

515

549

584

618

652

697

730

763

807

875

929 1062 1194 1327 1460 1592 1725

14

286

318

350

382

414

445

477

509

540

573

605

647

678

708

750

813

863

986 1109 1232 1355 1479 1602 1725

15

267

297

326

358

386

415

445

475

505

534

564

604

633

661

700

758

805

920 1035 1150 1265 1380 1495 1610

16

250

278

306

333

361

389

416

445

473

500

528

566

593

620

656

711

755

863

970 1078 1186 1294 1402 1509`

DETERMINING SPRAY TIP SIZE

As stated earlier in this manual, the output pressure is

determined  by  forcing  the  output  volume  of  water 

through  a  certain  size  orifice  or  spray  tip.  Spray  tip

size  is  a  very  important  factor  of  proper  pressure

washer  performance,  using  a  tip  that  is  sized  too 

small  will  allow  overpressurization  of  the  pump  and

components.  You  must  know  your  output  GPM  and 

your desired output PSI to properly select a spray tip

size. To use the chart on page 4, find the desired PSI,

read  down  the  column  until  you  find  the  output  GPM 

closest to your pump application. Read to the far left to

find the spray tip number and orifice diameter. 

Example:

1000 PSI at 4.0 GPM needs a number 8 spray tip.

Spray tips are available in various  spray angles. It is

advisable to have different spray angle tips in the same

size  for  different  cleaning  applications.  Some  spray

tips or nozzles are available with an adjustable spray

angle.

DRIVE SYSTEM

There  are  three  common  methods  of  driving  or

connecting  the  pump  and  motor/engine.  Direct

drive  and  gear  reductions  drive  require  special

components that are matched to the pump and to the

motor.engine,  as  well  as  other  technical

considerations.  A  belt  and  pulley  system  is  the

recommended  method  of  driving  the  pump  because

it  allows  easy  reduction  of  the  motor/engine  RPM

to  your  required  pump  RPM,  as  well  as  absorbing

shocks  produced  by  both  the  engine  and  the  pump.

5

PULLEY SELECTION

There  are  many  types  of  belts  and  pulleys  available,

the  following  is  a  basic  guide.  Manufacturer’s

representatives  should  be  consulted  concerning  your

specific requirements.

From  the  Motor  Pulley  Guide  (below)  determine  the

pulley size (A, B or C section), and number and size

(A, B or C section) of belt required. the larger in size

and/or  number  of  belts  used  will  increase  the  life

of belts. Be sure to consider space limitations of your

finished assembly.

To  determine  pump  pulley  size  (based  on  a  1725

RPM  motor),  find  the  motor  pulley  size  on  the  chart

below,  follow  the  column  down  until  you  find  your

required  Pump  RPM    to  meet  your  requirements,  or

the next higher RPM. Follow the column to the left to

find pump pulley diameter.

To Transmit:

HORSEPOWER

“A” SECTION BELT

“B” SECTION BELT “C” SECTION BELT

1 Belt

Single

Groove

Pulley

2 Belts

Double

Groove

Pulley

1 Belt

Single

Groove

Pulley

2 Belts

Double

Groove

Pulley

1 Belt

Single

Groove

Pulley

1

2-1/2 Dia

-

-

-

-

1-1/2

3

-

-

-

-

2

3-1/4

-

-

-

-

3

3-3/4

3 Dia

4-1/2 Dia

3-1/2 Dia

-

5

5-1/4

3-1/2

5

5

-

7-1/2

-

4-1/2

66

5

-

10

-

5-1/4

8

5

8 Dia

15

-

7

10

6

9

20

-

9

-

7

10

MOTOR PULLEY GUIDE

PUMP PULLEY GUIDE (1725 RPM Motor)

Содержание Pressure Washer System

Страница 1: ...tream or Inlet Side Pressure 2 Components 6 Flow 2 Downstream or Outlet Side Designing Your System 3 5 Components 6 7 Pump Selection 3 Installing Your Components 7 8 Motor Engine Selection 3 Troubleshooting 9 Determining Spray Tip Size 5 Servicing Your Pump 10 11 Drive System 5 6 Valve Assemblies 10 Pulley Selection 5 Removing Manifold Head 10 Belt Selection 6 Replacing Plungers 11 Replacing Packi...

Страница 2: ... the spray gun is closed Without an unloading or regulating valve dangerously high pressures will be produced when the spray gun is closed because the water being forced out of the pump has no place to go Serious bodily injury or property damage could be caused by failure to properly utilize an appropriate un loader or regulator valve in your pressure washer system As a safety device at least one ...

Страница 3: ...your work surface instead of cleaning it Never exceed the maximum pressures of ro tation speed as is stated on the Technical Data Sheet supplied with each pump Refer to the Pump Data Sheet to determine what pump RPM is needed to deliver your required GPM output MOTOR ENGINE SELECTION The size of the electric motor or gas engine required to drive your pump is determined by the pump GPM and PSI outp...

Страница 4: ...5 5 060 55 87 1 40 1 90 2 10 2 30 2 50 2 8 3 0 3 4 3 8 4 4 4 8 5 2 5 5 6 062 60 95 1 50 2 10 2 30 2 50 2 70 3 0 3 2 3 7 4 2 4 8 5 2 5 6 6 0 6 5 064 65 1 00 1 70 2 30 2 50 2 70 2 90 3 3 3 6 4 0 4 6 5 2 5 7 6 0 6 5 7 067 70 1 10 1 80 2 50 2 70 2 90 3 10 3 5 3 8 4 3 5 0 5 6 6 1 6 6 7 0 7 5 707 75 1 20 1 90 2 70 2 90 3 20 3 40 3 8 4 1 4 6 5 3 6 0 6 5 7 0 7 5 8 072 80 1 30 2 00 2 80 3 10 3 40 3 60 4 0 ...

Страница 5: ...performance using a tip that is sized too small will allow overpressurization of the pump and components You must know your output GPM and your desired output PSI to properly select a spray tip size To use the chart on page 4 find the desired PSI read down the column until you find the output GPM closest to your pump application Read to the far left to find the spray tip number and orifice diamete...

Страница 6: ...low of water without restricion Thermal Relief Valve This is a temperature sensing valve that opens and dumps water to the atmosphere at a predetermined temperature Recirculating water through the by pass loop has a tendency to heat up to temperatures that can eventually damage internal pump parts A thermal relief valve is an inexpensive way to avoid costly repairs Upstream Injector A device which...

Страница 7: ...njector will not draw any chemical Downstream injectors require low pressure generally about 200 PSI to activate the chemical flow A double nozzle holder rollover nozzle and a double lance are a few accessories that allow mounting a low pressure spray tip as well as the standard high pressure spray tip An adjustable nozzle allows a large orifice to be opened around the high pressure spray tip High...

Страница 8: ... Mount the motor engine in relationship to the pump such that when running the rotation of the pump crankshaft is counterclockwise as you face the pump crankcase or pulley A gas engine has only one rotation direction which may vary between manufacturers Be sure you know the rotation direction before you begin assembly Most electric motors may be operated in either rotation direction by changing th...

Страница 9: ...gs Oil leaking in the area of crankshaft Worn crankshaft seal or inproperly installed oil seal o ring Remove oil seal retainer and replace damaged o ring and or seals Bad bearing Replace bearing and any spacer or cover damaged by heat Excessive play in the end of the crankshaft pulley Worn main bearing from excessive tension on drive belt Replace crankcase bearing and or tension drive belt Water i...

Страница 10: ...ed 7 Install new o rings in valve cavity 8 Insert assembly into valve cavity 9 Replace valve cap and torque to specifications REMOVING MANIFOLD HEAD Figure 2 1 Remove the fasteners retaining the head 2 Separate head from crankcase NOTE It may be necessary to tap head lightly with rawhide mallet to loosen CAUTION When sliding head from crankcase use caution not to damage plungers 3 The V packing as...

Страница 11: ... this is replaced before new plunger is installed 3 Separate piston screw from plunger 4 Install new o ring and teflon backup ring on piston screw NOTE A film of grease on the outside of the o rings insures a better installation 5 Carefully press piston screw into plunger 6 Slide new plunger over the piston guide and torque to specifications 11 3 5 6 ...

Страница 12: ...er until it will go no further using proper insertion tool Install rear head ring v packing and main seal retainer into cylinder in order shown and press firmly into cylinder 5 Repeat this sequence for each cylinder 6 Coat each plunger with grease and carefully remount manifold Torque head to specifications General Pump is a member of the Interpump Group G GE EN NE ER RA AL L P PU UM MP P 1174 Nor...

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