Ingersoll-Rand 251A1 Operation And Maintenance Manual Download Page 14

MAINTENANCE SECTION

14

 PART NUMBER FOR ORDERING

 PART NUMBER FOR ORDERING

1

Motor Housing

36

Backhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–102

2 1/2” NPT Discharge

37

Oil Chamber Plug . . . . . . . . . . . . . . . . . . . . . .  P25–227

for 251A1 . . . . . . . . . . . . . . . . . . . . . . . . . . 

P251–40

38

Oiler Felt (2) . . . . . . . . . . . . . . . . . . . . . . . . . .  JA4–75

for 251A1–EU . . . . . . . . . . . . . . . . . . . . . . 

P251–EU–A40

39

Oiler Adjusting Screw . . . . . . . . . . . . . . . . . . .  JA4–71

2 1/2” British Pipe Tapped Discharge

40

Grease Fitting . . . . . . . . . . . . . . . . . . . . . . . . . .  23–188

for 251A3 . . . . . . . . . . . . . . . . . . . . . . . . . . 

P251–240

41

Governor Valve Bushing . . . . . . . . . . . . . . . . .  P35–429

for 251A3–EU . . . . . . . . . . . . . . . . . . . . . . 

P25–EU–240

42

Rotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P251–53

2

Impeller Hub Bushing . . . . . . . . . . . . . . . . . . .  P250–41

43

Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–3

3

Grease Fitting (2) . . . . . . . . . . . . . . . . . . . . . . .  23–188

44

Front Arbor Bearing . . . . . . . . . . . . . . . . . . . . . . . .  P250–24

4

Water Seal (2) . . . . . . . . . . . . . . . . . . . . . . . . .  PB250–153

45

Impeller Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–152

5

Grease Level Valve . . . . . . . . . . . . . . . . . . . . .  P250–546

46

Impeller Shim (3)

6

Vent Filter (2) . . . . . . . . . . . . . . . . . . . . . . . . . .  JA4–75

0.005” (0.127 mm) thick . . . . . . . . . . . . . . 

P25–151–5

7

Vent Filter Plug . . . . . . . . . . . . . . . . . . . . . . . .  JA4–71

0.010” (0.254 mm) thick . . . . . . . . . . . . . . 

P25–151–10

8

Front End Plate . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–11

0.025” (0.635 mm) thick . . . . . . . . . . . . . . 

P25–151–25

9

Arbor Packing . . . . . . . . . . . . . . . . . . . . . . . . .  P25–35

47

Arbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P251–4

10

Arbor Packing Retainer (2) . . . . . . . . . . . . . . .  P250–36

48

Impeller Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P25–150

11

Vane Packet (set of 4 Vanes) . . . . . . . . . . . . . . . . .  R5H–42–4

49

Impeller Cover Cap Screw (4) . . . . . . . . . . . . . . . .  PB25–146

12

Dead Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–48

50

3/8” Lock Washer (4) . . . . . . . . . . . . . . . . . . . . . . .  D02–321

13

Cylinder Dowel . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–98

51

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P25–148B

14

Rear End Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P251–12

52

Impeller Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P251–144

15

Housing Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–43

53

Impeller Cover Shim (as required;

16

Housing Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  JA4–282

see IMPELLER ADJUSTMENT)

17

Governor Assembly . . . . . . . . . . . . . . . . . . . . . . . .  R4F–A424

0.003” (0.076 mm) thick; green . . . . . . . . . 

P251–145–3

25

Arbor Bearing Spacer . . . . . . . . . . . . . . . . . . . . . .  P251–165

0.005” (0.127 mm) thick; blue . . . . . . . . . . 

P251–145–5

26

Rear Arbor Bearing . . . . . . . . . . . . . . . . . . . . . . . .  R4–24

0.010” (0.254 mm) thick; brown . . . . . . . . 

P251–145–10

27

Governor Valve . . . . . . . . . . . . . . . . . . . . . . . . . . .  P35–425

0.025” (0.635 mm) thick; white . . . . . . . . . 

P251–145–25

28

Governor Valve Spring . . . . . . . . . . . . . . . . . . . . .  P35–431

54

Arbor Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  PS251–142

29

Governor Valve Spring Seat . . . . . . . . . . . . . . . . .  P25–418

55

Arbor Nut Washer . . . . . . . . . . . . . . . . . . . . . . . . .  P35–157

30

Seat Retaining Spring . . . . . . . . . . . . . . . . . . . . . .  H80–81B

56

Impeller (Closed) . . . . . . . . . . . . . . . . . . . . . . . . . .  P250–143

31

Air Strainer Nipple . . . . . . . . . . . . . . . . . . . . . . . . .  P35–286

57

Front Arbor Bearing Seat . . . . . . . . . . . . . . . . . . . .  P250–115

32

Air Strainer Assembly . . . . . . . . . . . . . . . . . . . . . .  P250–A267

33

Air Strainer Cap . . . . . . . . . . . . . . . . . . . . . . . .  P250–268

34

Air Strainer Plug . . . . . . . . . . . . . . . . . . . . . . .  P25–536

35

Air Strainer Screen . . . . . . . . . . . . . . . . . . . . . .  205–1061

To keep downtime to a minimum, it is desirable to have on hand certain repair parts.  We recommend that you stock one (pair or set) of each part indicated 
by a bullet (

) for every four pumps in service.

Summary of Contents for 251A1

Page 1: ...Always turn off the air supply and disconnect the air supply hose before installing removing or adjusting any accessory on this pump or before performing any maintenance on this pump Do not use damage...

Page 2: ...Pumps are assembled at the factory with 0 010 clearance When due to wear this clearance has increased to 0 032 1 32 remove enough Impeller Cover Shims to obtain the original 0 010 clearance White is 0...

Page 3: ...ays use an Exhaust Hose and be certain the free end of the Hose is kept well above the surface of the liquid Do not allow the pump to operate at free speed not submerged for long periods of time The f...

Page 4: ...taller d poser ou ajuster toute accessoire sur cette pompe ou d entreprendre une op ration d entretien quelconque sur la pompe Ne pas utiliser des flexibles ou des raccords endommag s effiloch s ou d...

Page 5: ...ct entre l impulseur et le couvercle d impulseur 52 1 Les pompes sont assembl es en usine pour donner un jeu de 0 010 Lorsqu cause de l usure ce jeu atteint 0 032 le jeu d origine doit tre r tabli en...

Page 6: ...LIGNE SECONDAIRE AU MOINS 2 FOIS LA DIMEN SION DE L ADMISSION D AIR DE L OUTIL VIDANGER R GULI REMENT COMPRESSEUR Plan TPD905 1 FONCTIONNEMENT Utiliser toujours un flexible d chappement et s assurer q...

Page 7: ...de instalar desmontar o ajustar cualquier accesorio de esta bomba o antes de realizar cualquier operaci n de mantenimiento de la misma No utilice mangueras de aire y racores da ados desgastados o dete...

Page 8: ...g 0 25 mm Cuando debido al uso la holgura haya aumentado hasta 0 032 pulg 1 32 pulg 0 81 mm saque suficientes calzos de la cubierta del impulsor para conseguir la holgura original de 0 010 pulg 0 25 m...

Page 9: ...TAMA O DE ENTRADA DE HERRAMIENTA NEUM TICA PURGAR PERI DICAMENTE COMPRESOR Esq TPD905 1 FUNCIONAMIENTO Utilice siempre siempre una manguera de escape y aseg rese de que el extremo abierto de la mangu...

Page 10: ...a de alimenta o de ar antes de instalar remover ou ajustar qualquer acess rio nesta ferramenta ou antes de executar qualquer servi o de manuten o nesta ferramenta N o use mangueiras de ar ou adaptador...

Page 11: ...a de f brica como sendo 0 010 Quando devido ao desgaste esta dist ncia tiver aumentado cerca de 1 32 um ajuste pode ser feito ao remover algumas Juntas da Cobertura do Impulsor para obter 0 010 de dis...

Page 12: ...DA FERRAMENTA PNEUM TICA PARA SISTEMA DE AR PARA FERRAMENTA PNEUM TICA LUBRIFICADOR REGULADOR FILTRO LINHA RAMIFICADA 2 VEZES O TAMANHO DA ENTRADA DA FERRAMENTA PNEUM TICA DRENE REGULARMENTE COMPRESS...

Page 13: ...MAINTENANCE SECTION 13 Dwg TPA271 1...

Page 14: ...mpeller Cover Cap Screw 4 PB25 146 12 Dead Handle P250 48 50 3 8 Lock Washer 4 D02 321 13 Cylinder Dowel P250 98 51 Inlet P25 148B 14 Rear End Plate P251 12 52 Impeller Cover P251 144 15 Housing Gaske...

Page 15: ...5 135 66 Grease Chamber Cap Seal R2C 103 Fire Hose Adapter one end 2 1 2 pipe thread to fit Perforated Bottom Plate special requires pump discharge other end 3 1 16 O D the use of No P25 140 PB250 147...

Page 16: ...Motor Housing in the vise vertically Unscrew the Housing Nut 16 and carefully remove the Backhead 36 5 While grasping the Governor Assembly 17 in one hand gently tap on the impeller end of the Arbor...

Page 17: ...ssembly of the Sump Pump 1 Place the Arbor Bearing Spring 58 Arbor Bearing Spacer 25 and the Front Arbor Bearings 44 on the Arbor 47 2 Install the Front Arbor Bearing Seat 57 against the Front Bearing...

Page 18: ...ION If lubrication does not result in satisfactory operation disassemble the pump inspect and clean all parts Erratic speed Sticking Governor Valve Replace Governor Valve and or Governor Valve Bushing...

Page 19: ...19 NOTES...

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