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Page 6 of 8 PD30R-XXX-XXX-C (en)
MATERIAL CODE
[B] = Nitrile [I] = Iron
[Br] = Brass [P] = Polypropylene
[C] = Carbon Steel [Sp] = Santoprene
[Ck] = Ceramic [SS] = Stainless Steel
[D] = Acetal [U] = Polyurethane
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 necessary. Look
for deep scratches on metallic surfaces, and nicks or cuts in “O”
rings.
Take precautions to prevent cutting “O” rings upon installation.
Lubricate “O” rings with Lubriplate FML-2 grease.
Do not over-tighten fasteners. Refer to torque speci 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
A light tap on (118) actuator pin should expose the opposite
(121) sleeve, (167) pilot piston and other parts.
Remove (170) sleeve. Inspect inner bore of sleeve for damage.
PILOT VALVE REASSEMBLY
Clean and lubricate parts not being replaced from service kit.
Install new (171 and 172) “O” rings. Replace (170) sleeve.
y
y
y
y
y
y
y
1.
2.
1.
2
.
Install new (168) “O” rings and (169) seal - Note the lip direction.
Lubricate and replace (167) pilot piston.
Reassemble remaining parts. Replace (173 and 174) “O” rings.
MAJOR VALVE DISASSEMBLY
Remove (135) valve block and (233) adapter plate, exposing
(132 and 166) gaskets, (232) “O” ring and (176) checks.
Remove (233) adapter plate, releasing (140) valve insert, (141)
valve plate, (199 and 200) gaskets and (232, 243 and 244) “O”
rings.
Remove (136) end cap and (137) “O” ring, releasing (111) spool.
MAJOR VALVE REASSEMBLY
Install new (138 and 139) “U” cups on (111) spool - LIPS MUST
FACE EACH OTHER.
Insert (111) spool into (135) valve block.
Install (137) “O” ring on (136) end cap and assemble end cap
to (135) valve block, securing with (107) end plates and (105)
screws.
Install (140) valve insert and (141) valve plate into (135) valve
block. NOTE: Assemble (140) valve insert with “dished” side
toward (141) valve plate. Assemble (141) valve plate with 2
identi cation dots toward (199 and 200) gaskets.
Assemble (232, 243 and 244) “O” rings, (199 and 200) gaskets
and (233) adapter plate to (135) valve block.
Assemble (132 and 166) gaskets, (176) checks and (232) “O” ring
to (101) center body.
Assemble (135) valve block and components to (101) center
body, securing with (134) screws.
3.
4.
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2.
3.
1.
2.
3.
4.
5.
6.
7
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PARTS LIST / PX30R-XXX-XXX-C AIR MOTOR SECTION
AIR MOTOR PARTS
Item Description
(size)
Qty Part No. Mtl
101 Center Body (1) 95667 [P]
103 Bushing (1) 94092 [D]
105 Screw
(M6 x 1 - 6g x 180 mm)
(4) 95921 [SS]
107 End Plate (2) 95846 [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]
o
132 Gasket (1) 94099 [B]
133 Washer
(M6)
(8) 95931 [SS]
134 Screw
(M6 x 1 - 6g x 35 mm)
(8) 95923 [SS]
135
Valve Block
(PD30R-XXX-XXX-C)
(1) 95789 [P]
(PE30R-XXX-XXX-C)
(1) 95789-1 [P]
136 End Cap (1) 95790 [P]
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)
o
166 Track Gasket (1) 94026 [B]
o
167 Pilot Piston
(includes 168 and 169)
(1) 67164 [D]
Item Description
(size)
Qty Part No. Mtl
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]
no
174 “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 Mu er Kit
(includes item 127)
(1) 67213
o
232 “O” Ring
(1/8” x 1/2” o.d.)
(2) Y325-202 [B]
233 Adapter Plate (1) 95761 [P]
236 Nut
(M6 x 1 - 6h)
(4) 95924 [SS]
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
n
Items included in uid section service kit, see pages 4 and 5.
o
Indicates parts included in 637369 air section service kit shown below and items (70), (144), (175) and (180) shown on page 4.