ARO ARO 66M3X0-XXX-C Operator'S Manual Download Page 4

Page 4 of 8 

66M3X0-XXX-C (en)

PARTS LIST / 66M3X0-XXX-C FLUID SECTION

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 637467-XX Fluid section service kit includes: Balls (see Ball Option, refer to -XX in chart below), Diaphragms (see Diaphragm Option, refer to -XX in chart 

below) and items 2, 3, 19 and 196 (listed below) plus 93706-1 Key-Lube grease packet (page 6).

MATERIAL CODE

[A] = Aluminum
[B] = Nitrile
[C] = Carbon Steel
[Co] =  Copper
[E] = E.P.R.
[H] = Hytrel
[Sp] =  Santoprene
[SS] = Stainless Steel
[T] = PTFE
[V] = Viton

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 “Smart Parts“, keep these items on hand in addition to the service kits for fast 

repair and reduction of down time.

SEAT OPTIONS

66M3X0-XXX-C

BALL OPTIONS

66M3X0-XXX-C

“21”

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 “22” 

(2-1/2” diameter)

-XXX Seat

Qty

Mtl

-XXX Ball

Qty

Mtl

-1XX 97067

(4)

[A]

-X2X 93358-2

(4)

[B]

-XCX 93358-C

(4)

[H]

-XEX 93358-A

(4)

[Sp]

DIAPHRAGM OPTIONS 66M3X0-XXX-C

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 Service kit

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 “7”

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 “3” 

(1/8” x 1” o.d.)

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 “19” 

(3/16” x 5” o.d.)

-XXX

-XX = (Ball)
-XX = (Diaphragm)

Diaphragm

Qty

Mtl

“O” Ring

Qty

Mtl

“O” Ring

Qty

Mtl

-XX2 637467-X2

96475-G

(2)

[B]

Y325-210

(2)

[B]

Y325-350

(4)

[B]

-XX9 637467-X9

96475-C

(2)

[H]

Y327-210

(2)

[V]

Y327-350

(4)

[V]

-XXB 637467-XB

96475-A

(2)

[Sp]

Y328-210

(2)

[T]

94115

(4)

[E]

COMMON PARTS

Item

Description 

(size)

Qty Part No.

Mtl

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 1 Rod

(1)

97070

[C]

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 2 “O” Ring 

(3/32”  x 1” o.d.)

(1)

Y330-117

[B]

5 Washer 

(air side)

(2)

94831-1

[C]

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 6 Washer 

(fl uid side)

(2)

94802

[A]

9 Washer 

(13/16” i.d. x 2” o.d. x 5/32”)

(2)

Y13-12-T

[SS]

14 Screw 

(3/4” - 16 x 3-1/4”)

(2)

Y5-134-T

[SS]

15 Fluid Cap

(2)

96430

[A]

26 Screw 

(M12 x 1.75 - 6g x 45 mm)

(12) 94412-1

[C]

27 Screw 

(M12 x 1.75 - 6g x 60 mm)

(20) 94991-1

[C]

29 Nut 

(M12 x 1.75 - 6h)

(20) 95053-1

[C]

43 Ground Lug 

(see page 7)

(1)

93004

[Co]

60 Inlet manifold

(models 66M300-XXX-C, NPTF)

(1)

96429-1

[A]

(models 66M320-XXX-C, BSP)

(1)

96429-2

[A]

Item

Description 

(size)

Qty Part No.

Mtl

61 Outlet manifold

(models 66M300-XXX-C, NPTF)

(1)

96428-1

[A]

(models 66M320-XXX-C, BSP)

(1)

96428-2

[A]

182 Side Screen

(2)

96575

[A]

183 Top Plate Screen

(1)

97062

[A]

184 Base Plate Screen

(1)

97061

[A]

185 Lock Nut 

(M10 x 1.5 - 6h)

(4)

97060

[C]

186 Button Head Screw 

(M10 x 1.5 - 6g x 35 mm)

(4)

97059

[C]

187 Washer 

(M10)

(4)

96756

[C]

188 Button Head Screw 

(M10 x 1.5 - 6g x 25 mm)

(6)

96741

[C]

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 196 Cushion

(2)

94631

[Sp]

280 Handle

(2)

97057

[C]

281 Bracket

(4)

97055

[C]

Summary of Contents for ARO 66M3X0-XXX-C

Page 1: ...mumTemperature 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 PTFE 40 to 225 F 4 to 107 C Viton 40 to 350 F 40 to 177 C Dimensional Data see page 8 Noise Level 70 p s i 60 c p m c 86 3 db A d Noise Level 70 p s i 60 c p m e 108 7 db A d c Tested with 94810 muffler assembly instal...

Page 2: ...AND 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 contains hazardous material Safe handling practices must comply with local and national laws and safety code requirements Obtain Material Safety Data Sheets on all materials from the supplier for proper ha...

Page 3: ...ing the 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 air pressure and a broad range of material compatibility options are available Refer to the model and option chart ARO pumps feature stall resistant design modular air motor fluid sections Air o...

Page 4: ...210 2 B Y325 350 4 B XX9 637467 X9 96475 C 2 H Y327 210 2 V Y327 350 4 V XXB 637467 XB 96475 A 2 Sp Y328 210 2 T 94115 4 E COMMON PARTS Item Description size Qty Part No Mtl o 1 Rod 1 97070 C n 2 O Ring 3 32 x 1 o d 1 Y330 117 B 5 Washer air side 2 94831 1 C o 6 Washer fluid side 2 94802 A 9 Washer 13 16 i d x 2 o d x 5 32 2 Y13 12 T SS 14 Screw 3 4 16 x 3 1 4 2 Y5 134 T SS 15 Fluid Cap 2 96430 A ...

Page 5: ...70 ft lbs 88 1 94 9 Nm 26 screw 60 70 ft lbs 81 3 94 9 Nm 27 screw 60 70 ft lbs 81 3 94 9 Nm LUBRICATION SEALANTS c Apply Key Lube grease to all O rings U cups and mating parts d Apply Loctite 271 to threads PARTS LIST 66M3X0 XXX C FLUID SECTION FORTHE AIR MO TOR SECTION SEE PAGES 6 7 Figure 2 COLOR CODE Diaphragm Ball Material Color Color Hytrel Cream Cream Nitrile Black Red Santoprene Tan Tan Do...

Page 6: ...d 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 and install 110 packing cup and insert 109 piston into air inlet side cavity The 110 packing cup lips should point outward Install 108 gasket and replace 107 1 2 3 4 1 2 3 1 2 3 4 5 PARTS LIST 66M3X0 ...

Page 7: ...N 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 Apply Loctite 262 to threads g Apply Loctite 572 to threads MAJOR VALVE See cross section detail figure 4 LEGS IMPORTANT BE CERTAINTO ORIENT 115 SPACER LEGS AWAY FROM BLOCK ING INTERNAL PORTSWHEN REASSEM...

Page 8: ... cavitation 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 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...

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