Page 8 of 12
PM20X-X-X-BXX (en)
PARTS LIST / PM20X-X-X-BXX AIR MOTOR SECTION
4. Install (140) valve insert, (141) valve plate, (199) gasket
and (231, 243 and 244) “O” rings into (135) valve housing.
NOTE:
Assemble (140) valve insert with “dished” side to-
ward (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).
168
105
TORQUE REQUIREMENTS
Torque (105) Screw to 40 - 50 in. lbs (4.5 - 5.6 Nm).
Torque (240) Screw to 40 - 50 in. lbs (4.5 - 5.6 Nm).
LUBRICATION / SEALANTS
NOTE: DONOT OVERTIGHTEN FASTENERS.
ALL FASTENERS ARE METRIC.
Apply Lubriplate FML-2 grease to “O” rings, “U” Cups
and mating parts.
Apply Loctite 271 to threads at assembly.
136
137
139
111
138
135
133
134
101
103
174
121
126
118
173
169
172
171
170
167
173
121
174
118
166
132
243
244
199
141
140
240
200
241
128
176
MAJOR
VALVE
A replacement Major Valve Service Assembly is available separately, which includes the following:
637374-2 for models PM20A-X: 105 (4), 111, 128 (2), 132, 135, 136, 137, 138, 139, 140, 141, 166, 176 (2), 199, 200, 233, 240 (2), 241, 242, 243 and 244.
637374-4 for models PM20S-X: 105 (4), 111, 128 (2), 132, 135, 136, 137, 138, 139, 140, 141, 146, 147, 176 (2), 199, 200, 233, 240 (2), 241, 242, 243 and 244.
Optional 9411
Muffler
128
233
242
147
146
Substitute these “O” rings for
“166” gasket on models
PM20S-CSS-XXX-BXX.
MATERIAL CODE
[A] = Aluminum
[B] = Nitrile
[C] = Carbon Steel
[Ck] = Ceramic
[D] = Acetal
[I] =
Iron
[SP] = Santoprene
[SS] = Stainless Steel
[U] = Polyurethane
PILOT VALVE
PART GROUP
Torque (134) Screw to 40 - 50 in. lbs (4.5 - 5.6 Nm).
127
201
Figure 3
