ARO PP30A Series Manuel de l'opérateur - Page 8

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PARTS LIST / PP30A-XXX-XXX AIR MOTOR SECTION

 Indicates parts included in 637421 air section repair kit, plus items 70, 144, 175 and 180 (page 6).

Item

Description

(size)

101 Center Body

103 Bushing

105 Screw

(M6 x 1 - 6g x 20 mm)

111 Spool

118 Actuator Pin

(0.250" x 2.276" long)

121 Sleeve

126 Plug

128 Set Screw

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

 132 Gasket

133 Lockwasher

(1/4")

134 Screw

(M6 x 1 - 6g x 35 mm)

135 Valve Housing

136 Plug

 137 "O" Ring

(1/16" x 2" OD)

 138 "U" Cup

(3/16" x 1.792" OD)

 139 "U" Cup

(3/16" x 1-1/4" OD)

140 Valve Insert

141 Valve Plate

 166 Track Gasket

 167 Pilot Piston

(includes 168 and 169)

168 "O" Ring

(3/32" x 5/8" OD)

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 specifica-

tion block on view.

Re-torque fasteners following re-start.

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) 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.

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

rection. Lubricate and replace (167) pilot piston.

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

rings.

Page 8 of 12

AIR MOTOR PARTS LIST

Qty Part No.

[Mtl]

(1) 97031

[A]

(1) 95955

[Bz]

(4) 95887

[SS]

(1) 95651

[D]

(2) 94083

[SS]

(2) 94084

[D]

(1) Y17-13-S

[SS]

(2) Y29-42-S

[SS]

(1) 94099

[B]

(4) Y117-416-C [C]

(4) 95923

[SS]

(1) 96346

[A]

(1) 96335

[A]

(1) Y325-32

[B]

(1) 95966

[B]

(1) Y186-50

[B]

(1) 95650

[Ck]

(1) 95659

[Ck]

(1) 94026

[B]

(1) 67164

[D]

(2) 94433

[U]

Item

Description

(size)

169 "U" Cup

(1/8" x 7/8" OD)

170 Piston Sleeve

 171 "O" Ring

(3/32" x 1-1/8" OD)

 172 "O" Ring

(1/16" x 1-1/8" OD)

 173 "O" Ring

(1/16" x 1-3/8" OD)

 174 "O" Ring

(1/8" x 1/2" OD)

 176 Diaphragm

(check valve)

 199 Track Gasket

 200 Gasket

201 Muffler

231 "O" Ring

(3/32" x 11/32" OD)

233 Adapter Plate

240 Screw

(M6 x 1 - 6g x 16 mm)

 241 Track Gasket

 242 "O" Ring

(1/16" x 7/32" OD)

 243 "O" Ring

(1/8" x 5/8" OD)

 244 "O" Ring

(1/8" x 7/8" OD)

255 Pipe Plug

(1/16 - 27 NPT. x 1/4")

 Lubriplate FML-2 Grease

Lubriplate Grease, 10 Pack

MAJOR VALVE DISASSEMBLY

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

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

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

(141) valve plate, (199, 200 and 241) gaskets and (231,

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 housing.

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

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

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

and (231, 243 and 244) "O" rings into (135) valve hous-

ing. 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

to (135) valve housing, securing with (240) screws. NOTE:

Tighten screws to 40 - 50 in. lbs (4.5 - 5.6 Nm).

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

center body.

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

center body, securing with (134) screws. NOTE: Tighten

screws to 40 - 50 in. lbs (4.5 - 5.6 Nm).

Qty Part No.

[Mtl]

(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) 94117

[C]

(2) Y325-105

[B]

(1) 96347

[A]

(2) 95991

[SS]

(1) 96344

[B]

(1) Y325-5

[B]

(1) Y325-204

[B]

(1) Y325-208

[B]

(2) Y227-1-L

[C]

(1) 94276

637308

PP30A-XXX-XXX (en)