PARTS LIST / PX20P-X-X AIR SECTION
nIndicates parts included in 637369 Air Section Service Kit shown below and items (70), (144), (175), (180), (237) and (238) shown on page 4.
AIR MOTOR PARTS
Item | Description (size) | Qty | Part No. | [Mtl] |
101 | Center Body | (1) | 95667 | [P] |
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103 | Bushing | (1) | 94092 | [D] |
105 | Screw (M6 x 1 - 6g x 180 mm) | (4) | 95921 | [SS] |
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107 | End Plate | (2) | 95846 | [SS] |
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111 | Spool | (1) | 95651 | [D] |
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118 | Actuator Pin (0.250” x 2.276” long) | (2) | 94083 | [SS] |
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121 | Sleeve | (2) | 94084 | [D] |
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127 | 90_ St. Elbow | (1) | 94860 | [C / I] |
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n 132 | Gasket | (1) | 94099 | [B] |
133 | Washer (M6) | (8) | 95931 | [SS] |
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134 | Screw (M6 x 1 - 6g x 35 mm) | (8) | 95923 | [SS] |
135 | Valve Block | (1) | 95789 | [P] |
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136 | End Cap | (1) | 95790 | [P] |
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n 137 | “O” Ring (1/16” x 2” o.d.) | (1) | [B] | |
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n 138 | “U” Cup (3/16” x 1.792” o.d.) | (1) | 95966 | [B] |
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n 139 | “U” Cup (3/16” x | (1) | [B] | |
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140 | Valve Insert | (1) | 95650 | [Ck] |
141 | Valve Plate | (1) | 95659 | [Ck] |
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n 146 | “O” Ring (1/8” x 7/8” o.d.) | (1) | [B] | |
n 147 | “O” Ring (1/8” x 5/8” o.d.) | (1) | [B] | |
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n 166 | Track Gasket | (1) | 94026 | [B] |
KIndicates items included in Fluid Section Service Kit, see page 4.
Item | Description (size) | Qty | Part No. | [Mtl] |
n 167 | Pilot Piston (includes 168 and 169) | (1) | 67164 | [D] |
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168 | “O” Ring (3/32” x 5/8” o.d.) | (2) | 94433 | [U] |
169 | “U” Cup (1/8” x 7/8” o.d.) | (1) | [B] | |
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170 | Piston Sleeve | (1) | 94081 | [Br] |
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n 171 | “O” Ring (3/32” x | (1) | [B] | |
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n 172 | “O” Ring (1/16” x | (1) | [B] | |
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n 173 | “O” Ring (1/16” x | (2) | [B] | |
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Kn 174 | “O” Ring (1/8” x 1/2” o.d.) | (2) | [B] | |
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n 176 | Diaphragm (check valve) | (2) | 94102 | [SP] |
n 199 | Track Gasket | (1) | 95666 | [B] |
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n 200 | Gasket | (1) | 95665 | [B] |
201 | Muffler (includes item 127) | (1) | 67213 |
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n 232 | “O” Ring (1/8” x 1/2” o.d.) | (2) | [B] | |
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233 | Adapter Plate | (1) | 95761 | [P] |
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236 | Nut (M6 x 1 - 6g) | (4) | 95924 | [SS] |
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L n | Lubriplate | (1) | 94276 |
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| Lubriplate Grease Packets (10) |
| 637308 |
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MATERIAL CODE
[B] = | Nitrile | [D] = | Acetal | [SP] = Santoprene |
[Br] = | Brass | [I] = | Iron | [SS] = Stainless Steel |
[C] = | Carbon Steel | [P] = | Polypropylene | [U] = Polyurethane |
[Ck] = | Ceramic |
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AIR MOTOR SECTION SERVICE
Service is divided into two parts - 1. Pilot Valve, 2. Major Valve.
GENERAL REASSEMBLY NOTES:
SAir Motor Section Service is continued from Fluid Section repair.
SInspect and replace old parts with new parts as necessary. Look for deep scratches on surfaces, and nicks or cuts in “O” rings.
STake precautions to prevent cutting “O” rings upon installation.
SLubricate “O” rings with Lubriplate
SDo not
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SSERVICE TOOLS
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 direction. Lu- bricate and replace (167).
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, (232) “O” ring and (176) checks.
2.Remove (233) adapter plate, releasing (140) valve insert, (141) valve plate, (199 and 200) gaskets and (146, 147 and 232) “O” rings.
3.Remove (136) end cap and (137) “O” ring, releasing (111) spool.
MAJOR VALVE REASSEMBLY
1.Install new (138 and 139) “U” cups on (111) spool
FACE EACH OTHER.
2.Insert (111) spool into (135) valve block.
3.Install (137) “O” ring on (136) end cap and assemble end cap to
(135)valve block, securing with (107) end plates and (105) screws.
4.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 identification dots to- ward (199 and 200) gaskets.
5.Assemble (146, 147 and 232) “O” rings, (199 and 200) gaskets and
(233)adapter plate to (135) valve block.
6.Assemble (132 and 166) gaskets, (176) checks and (232) “O” ring to
(101)body.
7.Assemble (135) valve block and components to (101) body, secur- ing with (134) screws.
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