66605X-X(en)Page 6 of 8
PARTSLIST / 66605X -XAIR MOTOR SECTION
nIndicatesparts included in 637141 Air Section Repair Kit.
AIR SECTION PARTS
Item Description(size) Qty Part No. [Mtl] Item Description(size) Qty Part No. [Mtl]
101 MotorBody (1) 93091 [P]
n102 “O”Ring (3/32” x 1” o.d.) (2) Y325-117 [B]
j103 Sleeve (1) 93087 [Bz]
j104 SnapRing (13/16”) (2) 37285 [C]
111 Spool (1) 93085 [D]
118 PilotRod (1) 93088 [C]
n119 “O”Ring (1/ 8” x 3/4” o.d.) (4) 93075 [U]
j120 Spacer (3) 115959 [Z]
n122 SnapRing (1/2”) (2) 77802 [C]
124 Stud(5/16” -18 x 1-17/32”) (see page 5) (8) 93249 [SS]
129 MufflerAssembly (1) 66972 [P]
129lExhaustCover (see note 2) 93092 [PS]
n130 Gasket (1) 93107 [SY]
131 Bolt(5/16” - 18 x 1-1/4”) (8) 93095 [SS]
n132 Gasket(see note 1) (1) 93339-1 [B]
133 Washer(9/32” i.d.) (4) 93096 [SS]
134 Bolt(1/4”-20x5”) (4) Y6-419-T [SS]
135 ValveBlock (1) 93090 [P]
136 Plug (1) 93086 [D]
n137 “O”Ring (3/32” x 1-1/2” o.d.) (1) Y325-125 [B]
n138 Packing,“U” Cup(1/8” x 1” o.d.) (1) 94395 [U]
n139 Packing,“U” Cup (1/8” x 1.427” o .d.) (1) 96383 [B]
n140 ValveInsert (1) 93276 [CK]
n141 ValvePlate (1) 93275 [CK]
142 Washer (2) 116038 [Z]
143 Plate (2) 93089 [SS]
201 Muffler(see note 2) 93110 [C]
nKey-Lube“O” Ring Lubricant 93706-1
10Pack of Key-Lube 637175
DIAPHRAGM PUMP SERVICE
GENERALSERVICE NOTES:
SInspectand replace old parts with new parts as necessary. Look for
deepscratches on metallic surfaces, and nicks or cuts in “O” rings.
S7/16” wrench, 1/2” wrench, 7/16” socket, 1/2” socket, torque
wrench(measuring inch pounds), “O” ring pick.
FLUID SECTION DISASSEMBLY
1. Remove(34) top manifold / (36) swivel assembly.
Note:Manifold options involve single piece manifolds (60 / 61) or three
pieceswivel type manifolds with clamps.
2. Remove(41) ball cages, (22) balls, ( 19 and 20) “O” rings and (21)
seats.Note: If cages are difficult to remove at this step, it may be
helpfulto proceed through step 5 and remove them once they are
accessiblefrom the inside of the fluid cap.
3. Remove(35) bottom manifolds / (36) swivel assembly.
4. Remove(19) “O” rings, (21) seats and (22) balls.
5. Remove(15) fluid caps.
6. Remove (6) diaphragm nut, (8) [(7) PTFE models only] dia-
phragm(s)and (5) diaphragm washer from (1) diaphragm connect-
ingrod.
7. Remove(1) connecting rod from air motor.
8. Carefullyremove remaining (6) diaphragm nut, (8) [(7) PTFE mod-
els]diaphragm and (5) diaphragm washer from (1) connecting rod.
Donot mar surface of connecting rod.
9. Remove(2) “O” ring from connecting rod.
10. Remove (37) clamps from top and bottom manifold / swivel assem-
blies.
11. Remove (33) “O” rings from (36) swivels.
Note1:Part no.93339-1 one-piece gasketreplaces the following parts (not shown) in mod-
els manufactured prior to October 1988, Y325-10 (4), Y325-12,93093, 93094,
Y325-8.
Note2: The (129l) exhaust cover and (201) muffler were standard until 9/92. They are
availableseparately for service or piped exhaust applications.
Note3: A majorvalve service assembly is available separately which includes items: 111,
132,135 - 141. Order part no. 66362.
MATERIALCODE
[B]= Nitrile [D]= Acetal [SY]= Syn-Seal
[Bz]= Bronze [P]= Polypropylene [U] = Polyurethane
[C]= CarbonSteel [PS]= Polyester [Z]= Zinc
[CK]= Ceramic [SS] = StainlessSteel
FLUID SECTION REASSEMBLY
SReassemblein reverse order.
SLubricate(1) connecting rod and (2) “O” ring with Key-Lube or equiv-
alent“O” ring lubricant.
SInstall(5) diaphragm washers with i.d. chamfer toward diaphragm.
SWhenreplacing PTFE diaphragms, install the 93465 Santoprene di-
aphragmbehind the PTFE diaphragm.
SWheninstalling (41) cage, ball guides must line up with notches in
(21)seat to prevent damage.
SBeforeinstalling (35), (34) manifolds, (19) “O” ring should be proper-
lyseated on the o.d. of (41) ball cage.
SBeforetightening (39) nut and (38) carriage bolts on (36) swivels,
attachthe manifold / swivel assembly to the fluid caps. Rotate (36)
swivelto desired position and tighten each of the nuts approximately
8- 9 turns, then finish tightening (29) nuts.
V“SmartParts”, keep these items on hand in addition to the service kits for fast repairand reduction of down time.