PARTS LIST / PX20X-XXX-XXX-B( ) AIR MOTOR SECTION

oIndicates parts included in 637421 air section service kit shown below and items (70), (144), (175) and (180) shown on page 4.

AIR MOTOR PARTS

Item

Description (size)

 

 

Qty

Part No.

Mtl

101

Center Body (PX20A-XXX-XXX-B)

(1)

94028

[A]

 

(PX20S-XXX-XXX-B)

(1)

94109

[SS]

103

Bushing

 

 

(1)

94092

[D]

105

Screw (M6 x 1 - 6g x 20 mm)

 

 

(4)

95887

[SS]

111

Spool

 

 

(1)

95651

[D]

118

Actuator Pin (0.250” x 2.276” long)

(2)

94083

[SS]

121

Sleeve

 

 

(2)

94084

[D]

127

90° St. Elbow (1-1/2 - 11-1/2 N.P.T.)

(1)

94860

[C / I]

128

Set Screw (1/4” - 20 x 1/4”)

 

 

(2)

Y29-42-S

[SS]

o 132

Gasket

 

 

(1)

94099

[B]

133

Lockwasher (1/4”) (PX20A-XXX-XXX-B)

(3)

Y117-416-C

[C]

 

(PX20S-XXX-XXX-B) (3)

Y14-416-T

[SS]

134

Screw (M6 x 1 - 6g x 30 mm)

 

 

(4)

96358

[SS]

135

Valve Housing (PD20A-XXX-XXX-B)

(1)

96334-1

[A]

 

(PD20S-XXX-XXX-B)

(1)

96337-1

[SS]

 

(PE20A-XXX-XXX-B)

(1)

96334-2

[A]

 

(PE20S-XXX-XXX-B)

(1)

96337-2

[SS]

136

Plug (PX20A-XXX-XXX-B)

 

 

(1)

96335

[A]

 

(PX20S-XXX-XXX-B)

 

 

(1)

96339

[SS]

o 137

“O” Ring (1/16” x 2” o.d.)

 

 

(1)

Y325-32

[B]

o 138

“U” Cup (3/16” x 1.792” o.d.)

 

 

(1)

95966

[B]

o 139

“U” Cup (3/16” x 1-1/4” o.d.)

 

 

(1)

Y186-50

[B]

140

Valve Insert

 

 

(1)

95650

(Ck)

141

Valve Plate

 

 

(1)

95659

(Ck)

so146

“O” Ring (3/32” x 1-1/16” o.d.)

 

(1)

Y325-118

[B]

so147

“O” Ring (1/8” x 1/2” o.d.)

 

 

(2)

Y325-202

[B]

 

 

 

 

 

 

MATERIAL CODE

 

 

 

[A]

= Aluminum

[D]

= Acetal

 

 

 

[B]

= Nitrile

[I]

= Iron

 

 

 

[Br] = Brass

[Sp] = Santoprene

 

 

[C]

= Carbon Steel

[SS] = Stainless Steel

 

 

[Ck] = Ceramic

[U]

= Polyurethane

 

 

AIR MOTOR SECTION SERVICE

Service is divided into two parts - 1. Pilot Valve, 2. Major Valve.

GENERAL REASSEMBLY NOTES:

yAir Motor Section service is continued from Fluid Section repair.

yInspect and replace old parts with new parts as necessary. Look for deep scratches on metallic surfaces, and nicks or cuts in “O” rings.

yTake precautions to prevent cutting “O” rings upon installation.

yLubricate “O” rings with Lubriplate FML-2 grease.

yDo not over-tighten fasteners. Refer to torque specification block on view.

yRe-torque fasteners following restart.

ySERVICE TOOLS - To aid in the installation of (168) “O” rings onto the (167) pilot piston, use tool # 204130-T, available from ARO.

PILOT VALVE DISASSEMBLY

1.A light tap on (118) actuator pin should expose the opposite (121) sleeve, (167) pilot piston and other parts.

2.Remove (170) sleeve. Inspect inner bore of sleeve for damage.

PILOT VALVE REASSEMBLY

1.Clean and lubricate parts not being replaced from service kit.

2.Install new (171 and 172) “O” rings. Replace (170) sleeve.

Item

Description (size)

Qty

Part No.

Mtl

to166

Track Gasket

(1)

94026

[B]

o 167

Pilot Piston (includes 168 and 169)

(1)

67164

[D]

168

"O” Ring (3/32” x 5/8” o.d.)

(2)

94433

[U]

169

“U” Cup (1/8” x 7/8” o.d.)

(1)

Y240-9

[B]

170

Piston Sleeve

(1)

94081

[Br]

o 171

“O” Ring (3/32” x 1-1/8” o.d.)

(1)

Y325-119

[B]

o 172

“O” Ring (1/16” x 1-1/8” o.d.)

(1)

Y325-22

[B]

o 173

“O” Ring (1/16” x 1-3/8” o.d.)

(2)

Y325-26

[B]

no174

“O” Ring (1/8” x 1/2” o.d.)

(2)

Y325-202

[B]

o 176

Diaphragm (check valve)

(2)

94102

[Sp]

o 199

Track Gasket

(1)

95666

[B]

o 200

Gasket

(1)

95665

[B]

201

Muffler Kit (includes item 127)

(1)

67213

 

233

Adapter Plate (PX20A-XXX-XXX-B)

(1)

96336

[A]

 

(PX20S-XXX-XXX-B)

(1)

96338

[SS]

240

Screw (M6 x 1 - 6g x 16 mm)

(2)

95991

[SS]

o 241

Track Gasket

(1)

96344

[B]

o 242

“O” Ring (1/16” x 7/32” o.d.)

(1)

Y325-5

[B]

o 243

“O” Ring (1/8” x 5/8” o.d.)

(1)

Y325-204

[B]

o 244

“O” Ring (1/8” x 7/8” o.d.)

(1)

Y325-208

[B]

n o Lubriplate FML-2 grease

(1)

94276

 

 

Lubriplate Grease Packets (10)

 

637308

 

nItems included in fluid section service kit, see pages 4 and 5. s Used on models PX20S-XXX-XXX-B( ) only.

t Used on models PX20A-XXX-XXX-B( ) only.

3.Install new (168) “O” rings and (169) seal - Note the lip direction. Lubricate and replace (167) pilot piston.

4.Reassemble remaining parts. Replace (173 and 174) “O” rings.

MAJOR VALVE DISASSEMBLY

1.Remove (135) valve block and (233) adapter plate, exposing (132 and 166) gaskets and (176) checks.

2.Remove (233) adapter plate, releasing (140) valve insert, (141) valve plate, (199, 200 and 241) gaskets and (243 and 244) “O” rings.

3.Remove (136) plug and (137) “O” ring, releasing (111) spool.

MAJOR VALVE REASSEMBLY

1.Install new (138 and 139) “U” cups on (111) spool - LIPS MUST

FACE EACH OTHER.

2.Insert (111) spool into (135) valve block.

3.Install (137 and 242) “O” rings on (136) plug and assemble plug to (135) valve block, securing with (105) screws.

4.Install (140) valve insert, (141) valve plate, (199) gasket and (243 and 244) „O“ rings into (135) valve block. NOTE: Assemble (140) valve insert with “dished” side toward (141) valve plate. Assem- ble (141) valve plate with part number identification toward (140) valve insert.

5.Assemble (200 and 241) gaskets and (233) adapter plate to (135) valve block, securing with (240) screws.

6.Assemble (132 and 166) gaskets and (176) checks to (101) cen- ter body.

7.Assemble (135) valve block and components to (101) center body, securing with (134) screws.

Page 6 of 8

PD20X-XXX-XXX-B (en)

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Ingersoll-Rand PE20X-XXX-XXX-B, PD20X-XXX-XXX-B manual Parts List / PX20X-XXX-XXX-B AIR Motor Section, AIR Motor Parts
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