ARO PD20 series Manuel de l'opérateur - Page 7

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1. Model Description Chart

PARTS LIST / PX20X-XXX-XXX-BXXX AIR MOTOR SECTION

 Indicates parts included in 637421 air section service kit shown below and items (70), (144), (175) and (180) shown on page 5.

Item

Description

(size)

76 Pipe Plug

( 1/8 - 27 N.P.T x 0.27")

101 Center Body

(PX20A-XXX-XXX-BXXX)

(PX20S-XXX-XXX-BXXX)

103 Bushing

105 Screw

(M6 x 1 - 6g x 20 mm)

111 Spool

118 Actuator Pin

(0.250" x 2.276" long)

121 Sleeve

127 90° St. Elbow

(1-1/2 - 11-1/2 N.P.T.)

128 Set Screw

(1/4" - 20 x 1/4")

 132 Gasket

133 Lockwasher

(1/4")

(PX20A-XXX-XXX-BXXX)

133

(PX20S-XXX-XXX-BXXX)

134 Screw

(M6 x 1 - 6g x 35 mm)

135 Valve Block

(PD20A-XXX-XXX-BXXX)

(PD20S-XXX-XXX-BXXX)

(PE20A-XXX-XXX-BSXX)

(PE20S-XXX-XXX-BSXX)

136 Plug

(PX20A-XXX-XXX-BXXX)

(PX20S-XXX-XXX-BXXX)

 137 "O" Ring

(1/16" x 2" o.d.)

 138 "U" Cup

(3/16" x 1.792" o.d.)

 139 "U" Cup

(3/16" x 1-1/4" o.d.)

140 Valve Insert

141 Valve Plate

 146 "O" Ring

(3/32" x 1-1/16" o.d.)

 147 "O" Ring

(1/8" x 1/2" o.d.)

AIR MOTOR SECTION SERVICE

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

Major Valve.

GENERAL REASSEMBLY NOTES:

Air Motor Section service is continued from Fluid Section

repair.

Inspect and replace old parts with new parts as neces-

sary. Look for deep scratches on metallic surfaces, and

nicks or cuts in "O" rings.

Take precautions to prevent cutting "O" rings upon instal-

lation.

Lubricate "O" rings with Lubriplate FML-2 grease.

Do not over-tighten fasteners. Refer to torque specifi-

cation block on view.

Re-torque fasteners following restart.

SERVICE 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 oppo-

site (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.

3. Install new (168) "O" rings and (169) "U" cup - Note the lip

direction. Lubricate and replace (167) pilot piston.

4. Reassemble remaining parts. Replace (173 and 174)

"O" rings.

PX20X-XXX-XXX-BXXX (en)

Qty Part No.

Mtl

(1) Y17-50-S

[SS]

 166 Track Gasket

(1) 97031

[A]

 167 Pilot Piston

(1) 97040

[SS]

(1) 97394

[D]

(4) 95887

[SS]

(1) 95651

[D]

 171 "O" Ring

(2) 94083

[SS]

 172 "O" Ring

(2) 94084

[D]

(1) 94860

[C/I]

 173 "O" Ring

(2) Y29-42-S

[SS]

 174 "O" Ring

(1) 94099

[B]

 176 Diaphragm

(3) Y117-416-C [C]

 199 Track Gasket

 200 Gasket

(3) Y14-416-T

[SS]

(4) 95923

[SS]

(1) 96334-1

[A]

(1) 96337-1

[SS]

(1) 96334-2

[A]

(1) 96337-2

[SS]

(1) 96335

[A]

 241 Track Gasket

(1) 96339

[SS]

 242 "O" Ring

(1) Y325-32

[B]

 243 "O" Ring

(1) 95966

[B]

 244 "O" Ring

(1) Y186-50

[B]

(1) 95650

[AO]

(1) 95659

[AO]



(1) Y325-118

[B]

 Used on models PX20S-XXX-XXX-BXXX only.

 Used on models PX20A-XXX-XXX-BXXX only.

(2) Y325-202

[B]

1. Remove (135) valve block and (233) adapter plate, expos-

2. Remove (233) adapter plate, releasing (140) valve insert,

3. Remove (136) plug and (137) "O" ring, releasing (111)

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

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

3. Install (137 and 242) "O" rings on (136) plug and assemble

4. Install (140) valve insert, (141) valve plate, (199) gasket

NOTE: Assemble (140) valve insert with "dished" side toward

(141) valve plate. Assemble (141) valve plate with part

number identification toward (140) valve insert.

5. Assemble (200 and 241) gaskets and (233) adapter plate

6. Assemble (132 and 166) gaskets and (176) checks to (101)

7. Assemble (135) valve block and components to (101)

Item

Description

(size)

(includes 168 and 169)

168 "O" Ring

(3/32" x 5/8" o.d.)

169 "U" Cup

(1/8" x 7/8" o.d.)

170 Piston Sleeve

(3/32" x 1-1/8" o.d.)

(1/16" x 1-1/8" o.d.)

(1/16" x 1-3/8" o.d.)

(1/8" x 1/2" o.d.)

(check valve)

201 Muffler Kit

(includes item 127)

233 Adapter Plate

(PX20A-XXX-XXX-BXXX)

(PX20S-XXX-XXX-BXXX)

240 Screw

(M6 x 1 - 6g x 16 mm)

(1/16" x 7/32" o.d.)

(1/8" x 5/8" o.d.)

(1/8" x 7/8" o.d.)

  Lubriplate FML-2 grease

Lubriplate Grease Packets (10)

Items included in fluid section service kit, see pages 5 and 6.

MATERIAL CODE

[A]

= Aluminum

[AO]

= Alumina Oxide

[B]

= Nitrile

[Br]

= Brass

[C]

= Carbon Steel

MAJOR VALVE DISASSEMBLY

ing (132 and 166) gaskets and (176) checks.

(141) valve plate, (199, 200 and 241) gaskets and (243 and

244) "O" rings.

spool.

MAJOR VALVE REASSEMBLY

MUST FACE EACH OTHER.

plug to (135) valve block, securing with (105) screws.

and (243 and 244) „O" rings into (135) valve block.

to (135) valve block, securing with (240) screws.

center body.

center body, securing with (134) screws.

Qty Part No.

Mtl

(1) 94026

[B]

(1) 67164

[D]

(2) 94433

[U]

(1) Y240-9

[B]

(1) 94081

[D]

(1) Y325-119

[B]

(1) Y325-22

[B]

(2) Y325-26

[B]

(2) Y325-202

[B]

(2) 94102

[Sp]

(1) 95666

[B]

(1) 95665

[B]

(1) 67213

(1) 96336

[A]

(1) 96338

[SS]

(2) 95991

[SS]

(1) 96344

[B]

(1) Y325-5

[B]

(1) Y325-204

[B]

(1) Y325-208

[B]

(1) 94276

637308

MATERIAL CODE

[D]

= Acetal

[I]

= Iron

[SP]

= Santoprene

[SS]

= Stainless Steel

[U]

= Polyurethane

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