ARO 66605 series Operator's Manual - Page 6

Browse online or download pdf Operator's Manual for Water Pump ARO 66605 series. ARO 66605 series 8 pages. 1/2 inch diaphragm pump 1:1 ratio (non-metallic)

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(n) Indicates parts included in 637141 Air Section Repair Kit.

ITEM DESCRIPTION

(Size in Inches)

101 Motor Body

n102 O" Ring

(3/32" x 1" o.d.)

j103 Sleeve

j104 Snap Ring

(13/16")

111 Spool

118 Pilot Rod

n119 O" Ring

(1/8" x 3/4" o.d.)

j120 Spacer

n122 Snap Ring

(1/2")

124 Stud

(5/16" 18 x 1 17/32") shown pg. 5

129 Muffler Assembly

Exhaust Cover

129

(see note 2)

n130 Gasket

131 Bolt

(5/16" 18 x 1 1/4")

n132 Gasket

(see note 1)

DIAPHRAGM PUMP SERVICE

GENERAL SERVICE NOTES:

Inspect and replace old parts with new parts as necessary. Look for

deep scratches on metallic surfaces, and nicks or cuts in O" rings.

7/16" Wrench, 1/2" Wrench, 7/16" Socket, 1/2" Socket, Torque

Wrench (measuring inch pounds), O" ring Pick.

FLUID SECTION DISASSEMBLY

1. Remove (34) top manifold / (36) swivel assembly.

Note: Manifold options involve single piece manifolds (60 / 61) or three

piece swivel type manifolds with clamps.

2. Remove (41) ball cages, (22) balls, (19 and 20) ``O" rings and (21)

seats. Note: If cages are difficult to remove at this step, it may may

helpful to proceed through step 5 and remove them once they are

accessible from the inside of the fluid cap.

3. Remove (35) bottom manifolds / (36) swivel assembly.

4. Remove (19) O" rings, (21) seats and (22) balls.

5. Remove (15) fluid caps.

6. Remove (6) diaphragm nut, (8) [(7) Teflon Models only] dia

phragm(s) and (5) diaphragm washer from (1) diaphragm connect

ing rod.

7. Remove (1) connecting rod from air motor.

8. Carefully remove remaining (6) diaphragm nut, (8) [(7) Teflon Mod

els] diaphragm and (5) diaphragm washer from (1) connecting rod.

Do not mar surface of connecting rod.

9. Remove (2) O" ring from connecting rod.

10. Remove (37) clamps from top and bottom manifold / swivel assem

blies.

11. Remove (33) O" rings from (36) swivels.

V Smart Parts" keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.

PAGE 6 OF 8

PARTS LIST / 66605X-X AIR MOTOR SECTION

AIR SECTION PARTS

QTY

PART NO.

[MTL]

(1)

93091

[P]

(2)

Y325 117

[B]

(1)

93087

[Bz]

(2)

37285

[C]

(1)

93085

[D]

(1)

93088

[C]

(4)

93075

[U]

(3)

115959

[Z]

(2)

77802

[C]

(8)

93249

[SS]

(1)

66972

[P]

93092

[PS]

(1)

93107

[SY]

(8)

93095

[SS]

(1)

93339 1

[B]

ITEM DESCRIPTION

(Size In Inches)

133 Washer

(9/32" i.d.)

134 Bolt

(1/4" 20 x 5")

135 Valve Block

136 Plug

n137 O" Ring

(3/32" x 1 1/2" o.d.)

n138 Packing, U" Cup

(1/8" x 1" o.d.)

n139 Packing, U" Cup

(1/8" x 1.427" o.d.)

n140 Valve Insert

n141 Valve Plate

142 Washer

143 Plate

201 Muffler

(see note 2)

n Keylube O" Ring Lubricant

10 Pack of Keylube

Note 1: Part No.93339 1 One Piece Gasket replaces the following parts (not shown) in

models manufactured prior to October 1988, Y325 10 (4), Y325 12, 93093, 93094,

Y325 8.

Note 2: The (129

) Exhaust Cover and (201) Muffler were standard until 9/92. They are

available separately for service or piped exhaust applications.

Note 3: A Major Valve Service Assembly is available separately which includes items: 111,

132, 135 141. Order part no 66362.

MATERIAL CODE

[B] = Nitrile

[D] = Acetal

[Bz] = Bronze

[P] = Polypropylene

[C] = Carbon Steel

[PS] = Polyester

[CK] = Ceramic

[SS] = Stainless Steel

FLUID SECTION REASSEMBLY

Reassemble In reverse order.

Lubricate (1) connecting rod and (2) O" ring with Key Lube or

equivalent O" ring lubricant.

Install (5) diaphragm washers with i.d. chamfer toward diaphragm.

When replacing Teflon diaphragms, install the 93465 Santoprene

diaphragm behind the Teflon diaphragm.

When installing (41) cage, ball guides must line up with notches in

(21) seat to prevent damage.

Before installing (35), (34) manifolds, (19) O" ring should be prop

erly seated on the o.d. of (41) ball cage.

Before tightening (39) nut on (38) carriage bolts on (36) swivels, at

tach the manifold / swivel assembly to the fluid caps. Rotate (36)

swivel to desired position and tighten each of the nuts approx. 8 9

turns, then finish tightening (29) nuts.

QTY

PART NO.

[MTL]

(4)

93096

[SS]

(4)

Y6 419 T

[SS]

(1)

93090

[P]

(1)

93086

[UH]

(1)

Y325 125

[B]

(1)

94395

[U]

(1)

93116

[B]

(1)

93276

[CK]

(1)

93275

[CK]

(2)

116038

[Z]

(2)

93089

[SS]

93110

[C]

93706 1

637175

[SY] = Syn Seal

[U] = Polyurethane

[UH] = UHMW PE

[Z] = Zinc

66605X X