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Page 7 of 8

PD20X-X

PARTS LIST / PD20X-X-X AIR SECTION

MAJOR VALVE CROSS SECTION DETAIL

109 110

k

112

114

k

113

k

115

111

116

Figure 4

147

k

146

k

MAJOR VALVE

PILOT VALVE
PART GROUP

118

111

169

k

121

109

133

See cross section
detail figure 4 above.

174

k

121

173

k

118

168

k

171

k

170

172

k

173

k

166

k

167

136

110

k

177

114

k

132

k

176

174

k

103

135

.

134

107

112

113

k

k

114

115

116

Substitute these “O” rings for
“166” on models PD20S-X-X &
PD20C-X-X.

Figure 3

101

114

k

114

k

113

k

Optional 94117 Muffler

.

TORQUE REQUIREMENTS

,

NOTE: DO NOT OVERTIGHTEN FASTENERS.

ALL FASTENERS ARE METRIC.

Torque (134) screw to 40 - 50 in. lbs (4.5 - 5.6 Nm).

LUBRICATION / SEALANTS

k

Apply Lubriplate FML-2 grease to “O” rings, “U” Cups

& mating parts.

IMPORTANT

BE CERTAIN TO ORIENT (115) SPACER LEGS

AWAY FROM BLOCKING INTERNAL PORTS

WHEN REASSEMBLING AIR SECTION.

A replacement Major Valve Service Assembly is available separately, which includes the following.
Valve Assembly Pump Models

Items Included

67089-1

PD20A-

107 - 116, 132, 135, 136, 166, 176, 177

67089-2

PD20C-, PD20S-

107 - 116, 132, 135, 136, 146, 147, 176, 177

43

Summary of Contents for ARO PD20 Series

Page 1: ...to 200_ F 18_ to 93_ C Nitrile 10_ to 180_ F 12_ to 82_ C PVDF KynarR 10_ to 200_ F 12_ to 93_ C SantopreneR 40_ to 225_ F 40_ to 107_ C PTFE 40_ to 225_ F 4_ to 107_ C VitonR 40_ to 350_ F 40_ to 177...

Page 2: ...Donotattempttoreturnapumptothe factory or service center that contains hazardous material Safe handling practices must comply with local and national laws and safety code requirements S Obtain Materia...

Page 3: ...ITS Refertothepartviewsanddescriptionsasprovidedonpage4 through7 for parts identification and Service Kit information S Certain ARO Smart Parts are indicated which should be available for fast repair...

Page 4: ...7 B L n 3 32 x 1 1 16 o d 2 Y325 118 B Y325 118 B 181 Roll Pin 5 32 o d x 3 4 long 4 Y178 56 S SS Y178 56 S SS MANIFOLD THREAD FLUID CAP MATERIAL OPTIONS PD20X XXX XXX Item Description size Qty PD20X...

Page 5: ...6 4 1 2 3 5 7 Torque Sequence 126 u 29 22 21 19 zk 60 PD20X FXX X 76 41 77 77 41 76 PD20X XXX 0XX A03 PD20X XXX 0XX 14 Diaphragm screw apply Loctite 271 to threads 65 70 ft lbs 88 1 94 9 Nm 26 and 27...

Page 6: ...E A Aluminum D Acetal SS Stainless Steel B Nitrile I Iron U Polyurethane Br Brass SP Santoprene Z Zinc C Carbon Steel AIR MOTOR SECTION SERVICE Service is divided into two parts 1 Pilot Valve 2 Major...

Page 7: ...X X PD20C X X Figure 3 101 114 k 114 k 113 k Optional 94117 Muffler TORQUE REQUIREMENTS NOTE DO NOT OVERTIGHTEN FASTENERS ALL FASTENERS ARE METRIC Torque 134 screw to 40 50 in lbs 4 5 5 6 Nm LUBRICATI...

Page 8: ...all joints on the inlet manifolds and suction connections These must be air tight S Inspectthepumpforsolidobjectsloggedinthediaphragmchamber or the seat area DIMENSIONAL DATA Dimensions shown are for...

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