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666300-XXX-C (en) 

Page 7 of 8

105 

107

117

197 

102 

103 

104

121

119 

123 

118 

122 

120

101

 197

104

121

 123

43

 198

107

 105

108

109

 110

 128

115

 114

 113

112

116

 114

111

106

126 

201

127

106

PARTS LIST / 6663XX-XXX-C AIR MOTOR SECTION

Figure 3

PILOT VALVE

ASSEMBLY TORQUE REQUIREMENTS 

NOTE: DO NOT OVERTIGHTEN FASTENERS.

(105) screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).

(123) screw, 20 - 25 in. lbs (2.3 - 2.8 Nm).

LUBRICATION / SEALANTS

Apply Key-Lube grease to all “O” rings, “U” cups and mating

parts.

Apply Loctite 271 to threads.

  Apply Loctite 262™ to threads.

  Apply Loctite 572™ to threads.

MAJOR VALVE

See cross section detail, figure 4.

LEGS

IMPORTANT

BE CERTAIN TO ORIENT (115) 

SPACER LEGS AWAY FROM BLOCK-

ING INTERNAL PORTS WHEN 

REASSEMBLING AIR SECTION.

 

 

116

110 

109

112 114 

111 115 113 

MAJOR VALVE CROSS SECTION DETAIL

Figure 4

Summary of Contents for ARO 666300 C Series

Page 1: ...erature Limits diaphragm ball seal seat material E P R EPDM 60 to 280 F 51 to 138 C Hytrel 20 to 180 F 29 to 82 C Kynar PVDF 10 to 200 F 12 to 93 C Nitrile 10 to 180 F 12 to 82 C Santoprene 40 to 225...

Page 2: ...ND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOWTHIS INFORMATIONTO AVOID INJURY AND PROPERTY DAMAGE jury or property damage Do not attempt to return a pump to the factory or service center that contai...

Page 3: ...uts to avoid twisting the diaphragms y For models with PTFE diaphragms Item 8 Santoprene dia phragm is installed with the side marked AIR SIDE towards the pump center body Install the PTFE diaphragm w...

Page 4: ...Diaphragm XX Ball XX Diaphragm Diaphragm Qty Mtl Diaphragm Qty Mtl O Ring Qty Mtl O Ring Qty Mtl XX2 637433 XX2 637433 X2 97291 2 2 B Y325 210 2 B Y325 350 4 B XX4 637433 XX4 637433 X4 96476 T 2 T 96...

Page 5: ...and nut flange heads which contact pump case when using stain less steel fasteners Not used with models 6663XX 9XX C 6663XX EXX C and 6663XX GXX C PARTS LIST 6663XX XXX C FLUID SECTION FORTHE AIR MO T...

Page 6: ...onto 115 spacer and insert etc NOTE Be careful to orient spacer legs away from blocking internal ports 2 Lubricate and carefully insert 111 spool 3 Install 117 gasket and 107 plate 4 Lubricate and ins...

Page 7: ...IGHTEN FASTENERS 105 screw 40 50 in lbs 4 5 5 6 Nm 123 screw 20 25 in lbs 2 3 2 8 Nm LUBRICATION SEALANTS Apply Key Lube grease to all O rings U cups and mating parts Apply Loctite 271 to threads Appl...

Page 8: ...pumped Suction hose must be a non collapsing type capable of pulling a high volume y Check all joints on the inlet manifolds and suction connections These must be air tight y Inspect the pump for soli...

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