![Ingersoll-Rand ARO SD20 B Series Operator'S Manual Download Page 9](http://html1.mh-extra.com/html/ingersoll-rand/aro-sd20-b-series/aro-sd20-b-series_operators-manual_2060582009.webp)
SD20X-XXX-XXX-BXXX (en)
Page 9 of 20
134
43
PILOT VALVE
PART GROUP
MAJOR
VALVE
174
121
118
167
170
173
168
169
171
172
118
174
173
121
181
147
146
141
199
140
241
240
176
200
128
132
233
244
243
201
127
133
135
137
242
128
136
105
136
411
138
111
139
105
410
128
242
137
425
For SD20S-XXX-XXX-BSXX
models
Figure 3
A replacement major valve service assembly is available separately, which includes the following:
637498 for models SD20S-XXX-XXX-BXXX: 105 (4), 111, 128, 132, 135, 136, 137, 138, 139, 140, 141, 146, 147 (2), 176 (2), 200 and 233.
LUBRICATION / SEALANTS
Apply Lubriplate FML-2 grease to all “O” rings, “U” cups and
mating parts.
Apply PTFE tape to threads at assembly.
Apply anti-seize compound to threads at assembly.
ASSEMBLY TORQUE REQUIREMENTS
NOTE: DO NOT OVERTIGHTEN FASTENERS.
ALL FASTENERS ARE METRIC.
For SD20S-XXX-XXX-BXXX:
(105) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).
(134) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).
(240) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).
PARTS LIST / SD20S-XXX-XXX-BXXX AIR MOTOR SECTION
MATERIAL CODE
[B]
= Nitrile
[Br]
= Brass
[Ck]
= Ceramic
[D]
= Acetal
[P]
= Polypropylene
[Sp]
= Santoprene
[SS]
= Stainless Steel
[U]
= Polyurethane