AIR MOT
OR SECTION SER
VICE
666DXX-X-
C
PAGE 6 OF 8
PARTS
LIST / AIR SECTION
nIndicates parts included in 637118-C Air Section Service Kit.
SERVICE KIT NOTE: Service Kit 637118-C is a general repair kit for all 1" and larger ARO diaphragm pump air motors.
It contains extra O-Rings and extra parts that may not be needed to service this model.
ITEM DESCRIPTION (Size in Inches) QTY PART NO. [MTL] ITEM DESCRIPTION (Size In Inches) QTY PART NO. [MTL]
101 Motor Body (666D0X, D2X) (1) 98725-1 [A] V116 Spacer (666D0X, D2X) (1) 92006 [A]
Motor Body (666D1X, D3X) (1) 98719-1 [CI] Spacer (666D1X, D3X) (1) 93048 [SS]
V102 O-Ring (1 O.D.) (1) Y325-24 [B] n117 Gasket (1) 92004 [B/NY]
V103 Sleeve (1) 98718-1 [BZ] 118 Pilot Rod (1) 93309-2 [C]
n104 Retaining Ring, TruArc (.925 I.D.) (2) Y145-26 [C] n119 O-Ring (3/4 O.D.) (4) 93075 [U]
105 Screw/Washer (1/4-20 x 5/8) (8) 93860 [C] 120 Spacer (3) 115959 [Z]
106 Washer (Included With (105) -- ------- --- 121 Sleeve Bushing (2) 98723-2 [BZ]
107 Plate (2) 93707-1 [SS] n122 O-Ring (1/2 O.D.) (2) Y330-110 [B]
n108 Gasket (With Notch) (1) 92878 [B/NY] n123 Screw (8-32 x 3/8) (4) Y154-41 [C]
V109 Piston (1) 92011 [D] 126 Plug (1) Y227-5 [C]
n110 U-Cup (1-3/8 O.D.) (1) Y186-51 [B] 127 Elbow (1) Y43-5-C [C]
V111 Spool (666D0X, D2X) (1) 92005 [A] 128 Plug (1) Y17-50-C [C]
Spool (666D1X, D3X) (1) 93047 [C] 201 Muffler (1) 93139 [P]
V112 Washer (1.557 O.D.) (5) 92877 [Z] nKeylube, O-Ring Lubricant (1) 93706-1
n113 O-Ring (Small) (1-1/4 O.D.) (5) Y325-214 [B] 10 Pak of Keylube (Available) 637175
n114 O-Ring (Large) (1-9/16 O.D.) (6) Y325-126 [B] nService Kits include: Y212-101 (2) Screws (10-32 x 1/4) used on units mf'd
V115 Spacer (4) 92876 [Z]
() ( /)
between 8/90 and 4/92 to retain the pilot bushing.
Service is divided into two parts - 1.Pilot Valve, 2.Major Valve.
GENERALREASSEMBLY NOTES:
S3; 8=8; #/-=387 #/;?3-/ 3< -87=37>/. 0;86 5>3. #/-=387 ;/9+3;
S7<9/-= +7. ;/95+-/ 85. 9+;=< @3=2 7/@ 9+;=< +< 7/-/<<+;B 884 08;
.//9 <-;+=-2/< 87 6/=+553- <>;0+-/< +7. 73-4< 8; ->=< 37 **;371<
S$+4/ 9;/-+>=387< =8 9;/?/7= ->==371 **;371< >987 37<=+55+=387
S>,;3-+=/ **;371< @3=2 /B5>,/ 8; /:>3?+5/7=
S8 78= 8?/;=312=/7 0+<=/7/;< ;/0/; =8 =8;:>/ <9/-303-+=387 ,58-4
87 ?3/@
S"/=8;:>/ 0+<=/7/;< 08558@371 ;/<=+;=
PILOT
V
AL
VE DISASSEMBL
Y
"/68?/ ;/=+37371 ;371
"/68?/ <-;/@< **;371<
"/68?/ 93<=87 ;8. <5//?/ ,><2371 **;371<
+7. <9+-/;< 0;86 =2/ 68=8; ,8.B
"/68?/ <5//?/ +7. **;371
PILOT
V
AL
VE REASSEMBL
Y
"/95+-/ **;371 30 @8;7 8; .+6+1/. +7. ;/37<=+55
<5//?/
7<=+55 87/ 80 =2/ <5//?/ ,><2371< **;371<
<9+-/;< +7. =2/ ;/6+37371 ,><2371
+;/0>55B 9><2 9358= ;8. 37=8 ,><2371< /=- +7. ;/=+37 87 /+-2
/7. @3=2 =2/ =@8 **;371< ;/=+37 @3=2 <-;/@<
"/95+-/ ;/=+37371 ;371<
n +;=< & !=B "/=+37371 "371< +;/ 37-5>./. 37 =2/
#/;?3-/ 3= 08; =2/ ;/9+3; 80 5+;1/; 9>69<
$"
() 5>637>6
() >7+ D
(');87C/
() +;,87 #=//5
() +<= ;87
() -/=+5
() /89;/7/
(&)B587
( ) 85B9;89B5/7/
(%) 85B>;/=2+7/
(##) #=+375/<< #=//5
(') '37-
MAJOR
V
AL
VE REASSEMBL
Y
"/68?/ 95+=/ +7. 1+<4/=<
7 =2/ <3./ 8998<3=/ =2/ +3; 375/= 9><2 87 =2/ 377/; .3+6/=/;
<9885 =23< @355 08;-/ =2/ 93<=87 8>= 87=37>/ 9><2371 =2/
<9885 +7. ;/68?/ 2/-4 08; <-;+=-2/< +7. 18>1/<
"/+-2 37=8 =2/ +3; </-=387 /A2+><= <3./ +7. ;/68?/ <9+-/;
<9+-/;< **;371< **;371< @+<2/;< /=-
2/-4 08; .+6+1/. **;371<
MAJOR
V
AL
VE REASSEMBL
Y
"/95+-/ @+<2/; **;371 **;371 87=8
<9+-/; +7. 37</;= /=-
NOTE: Be careful to orient spacer legs away from blocking
internal ports.
>,;3-+=/ +7. -+;/0>55B 37</;= <9885
7<=+55 1+<4/= +7.
>,;3-+=/ +7. 37<=+55 9+-4371 ->9 +7. 37</;= 93<=87 37=8
+3; 375/= <3./ -+?3=B =2/ 9+-4371 ->9 539< <28>5. 9837= 8>=E
@+;.
7<=+55 1+<4/= +7. ;/95+-/
V**#6+;= +;=< //9 =2/</ 3=/6< 87 2+7. 37 +..3=387 =8 =2/ #/;?3-/ 3=< 08; 0+<= ;/9+3; +7. ;/.>-=387 80 .8@7 =36/