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66M2X0-XXX-C (en)

PN 97999-1400

C

A

B

D

E

F

J

H

G

L -

 Material outlet 

M - 

Exhaust port

K - 

Air inlet

TROUBLE SHOOTING

Product discharged from exhaust outlet.

Check for diaphragm rupture.
Check tightness of (14) diaphragm screw.

Air bubbles in product discharge.

Check connections of suction plumbing.
Check “O” rings between intake manifold and fl uid caps.
Check tightness of (14) diaphragm screw.

y

y

y

y

y

Low output volume, erratic fl ow or no fl ow.

Check air supply.
Check for plugged outlet hose.
Check for kinked (restrictive) outlet material hose.
Check for kinked (restrictive) or collapsed inlet material hose.
Check for pump cavitation - suction pipe should be sized at 
least as large as the inlet thread diameter of the pump for 
proper fl ow if high viscosity fl uids are being pumped. Suction 
hose must be a non-collapsing type, capable of pulling a high 
volume.
Check all joints on the inlet manifolds and suction connections. 
These must be air tight.
Inspect the pump for solid objects lodged in the diaphragm 
chamber or the seat area.

y

y

y

y

y

y

y

DIMENSIONAL DATA

Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).

Figure 5

DIMENSIONS

A  -  17-15/16” (455.1 mm)
B  -  25-19/32” (650.0 mm)
C  -  8-31/32” (227.6 mm)
D  -  2” (50.8 mm)

E  -  13” (330.2 mm)
F  -  10-1/16” (255.6 mm)
G  -  26-23/32” (678.2 mm)
H  -  25-3/32” (637.3 mm)

J  -  16-5/32” (409.9 mm)
K  -  3/4 - 14 NPTF - 2
L - see below
M -  1-1/4 - 11-1/2 NPTF - 2

 “L”

66M250-XXX-C 

2 - 11-1/2 NPTF - 2

66M270-XXX-C 

Rp 2 (2 - 11 BSP, parallel)

Summary of Contents for 66M2X0-XXX-C

Page 1: ...ia 19 1 mm MaximumTemperature Limits diaphragm ball seal material E P R EPDM 60 to 280 F 51 to 138 C Hytrel 20 to 150 F 29 to 66 C Nitrile 10 to 180 F 12 to 82 C Santoprene 40 to 225 F 40 to 107 C Vit...

Page 2: ...ND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOWTHIS INFORMATIONTO AVOID INJURY AND PROPERTY DAMAGE jury or property damage Do not attempt to return a pump to the factory or service center that contai...

Page 3: ...diaphragms Re check torque settings after the pump has been re started and run a while y y y y y 1 2 3 y y y y y y GENERAL DESCRIPTION The ARO diaphragm pump offers high volume delivery even at low ai...

Page 4: ...X2 96391 G 2 B Y325 237 4 B XX9 637468 X9 96391 C 2 H Y327 237 4 V XXB 637468 XB 96391 A 2 Sp 94356 4 E COMMON PARTS Item Description size Qty Part No Mtl o 1 Rod 1 97071 C n 2 O Ring 3 32 x 1 o d 1 Y...

Page 5: ...t lbs 88 1 94 9 Nm 26 screw 30 40 ft lbs 40 7 54 2 Nm 27 screw 30 40 ft lbs 40 7 54 2 Nm LUBRICATION SEALANTS c Apply Key Lube grease to all O rings U cups and mating parts d Apply Loctite 271 to thre...

Page 6: ...113 O ring onto 115 spacer and insert etc NOTE Be careful to orient spacer legs away from blocking internal ports Lubricate and carefully insert 111 spool Install 117 gasket and 107 plate Lubricate a...

Page 7: ...FASTENERS 105 screw 40 50 in lbs 4 5 5 6 Nm 123 screw 20 25 in lbs 2 3 2 8 Nm LUBRICATION SEALANTS c Apply Key Lube grease to all O rings U cups and mating parts d Apply Loctite 271 to threads f Appl...

Page 8: ...tation suction pipe should be sized at least as large as the inlet thread diameter of the pump for proper flow if high viscosity fluids are being pumped Suction hose must be a non collapsing type capa...

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