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66605X-X (en)Page 6of 8
PARTS LIST / 66605X -X AIR MOTOR SECTION
n Indicates parts 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 Motor Body (1) 93091 [P]
n 102 “O” Ring(3/32” x1”o.d.) (2) Y325-117 [B]
j 103 Sleeve (1) 93087 [Bz]
j 104 Snap Ring (13/16”) (2) 37285 [C]
111 Spool (1) 93085 [D]
118 Pilot Rod (1) 93088 [C]
n 119 “O” Ring (1/8”x 3/4”o.d.) (4) 93075 [U]
j 120 Spacer (3) 115959 [Z]
n 122 Snap Ring (1/2”) (2) 77802 [C]
124 Stud (5/16” - 18x 1-17/32”) (see page 5) (8) 93249 [SS]
129 Muffler Assembly (1) 66972 [P]
129l Exhaust Cover(see note2) 93092 [PS]
n 130 Gasket (1) 93107 [SY]
131 Bolt(5/16” -18 x1-1/4”) (8) 93095 [SS]
n 132 Gasket(see note1) (1) 93339-1 [B]
133 Washer (9/32”i.d.) (4) 93096 [SS]
134 Bolt (1/4”-20x5”) (4) Y6-419-T [SS]
135 Valve Block (1) 93090 [P]
136 Plug (1) 93086 [D]
n 137 “O” Ring (3/32”x 1-1/2” o.d.) (1) Y325-125 [B]
n 138 Packing, “U” Cup(1/8”x1” o.d.) (1) 94395 [U]
n 139 Packing, “U” Cup (1/8” x1.427”o.d.) (1) 96383 [B]
n 140 Valve Insert (1) 93276 [CK]
n 141 Valve Plate (1) 93275 [CK]
142 Washer (2) 116038 [Z]
143 Plate (2) 93089 [SS]
201 Muffler(seenote2) 93110 [C]
n Key-Lube “O” Ring Lubricant 93706-1
10 Pack of Key-Lube 637175
DIAPHRAGM PUMP SERVICE
GENERAL SERVICE NOTES:
S Inspect andreplace oldpartswith newparts as necessary. Lookfor
deep scratches on metallic surfaces, and nicks or cuts in “O” rings.
S 7/16” 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
piece swivel 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
helpful to proceed through step 5 and remove them once they are
accessible from 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-
ing rod.
7. Remove (1) connecting rod from air motor.
8. Carefully remove remaining (6) diaphragm nut, (8) [(7) PTFE mod-
els] diaphragm and (5)diaphragm washer from (1) connecting rod.
Do not mar surface of connecting rod.
9. Remove (2) “O” ring from connecting rod.
10. Remove (37)clamps fromtop and bottommanifold / swivelassem-
blies.
11. Remove (33) “O” rings from (36) swivels.
Note1:Partno.93339-1one-piecegasketreplacesthefollowingparts(notshown)inmod-
els manufactured prior to October 1988, Y325-10 (4), Y325-12, 93093, 93094,
Y325-8.
Note 2:The (129
l) exhaustcover and(201) mufflerwere standarduntil 9/92.They are
available separately forservice or piped exhaust applications.
Note3:Amajorvalveserviceassemblyisavailableseparatelywhichincludesitems:111,
132, 135- 141. Orderpart no.66362.
MATERIAL CODE
[B]= Nitrile [D]= Acetal [SY] = Syn-Seal
[Bz] = Bronze [P]= Polypropylene [U] = Polyurethane
[C] = CarbonSteel [PS]= Polyester [Z] = Zinc
[CK]= Ceramic [SS]= Stainless Steel
FLUID SECTION REASSEMBLY
S Reassemble in reverse order.
S Lubricate(1)connectingrodand(2)“O”ringwithKey-Lubeorequiv-
alent “O” ring lubricant.
S Install (5) diaphragm washers with i.d. chamfer toward diaphragm.
S WhenreplacingPTFEdiaphragms,installthe93465Santoprenedi-
aphragm behind the PTFE diaphragm.
S When installing (41) cage, ball guides must line up with notches in
(21) seat to prevent damage.
S Beforeinstalling(35),(34)manifolds,(19)“O”ringshouldbeproper-
ly seated on the o.d. of (41) ball cage.
S Before tightening (39) nut and (38) carriage bolts on (36) swivels,
attach the manifold / swivel assembly to the fluid caps. Rotate (36)
swiveltodesiredpositionandtighteneachofthenutsapproximately
8 - 9 turns, then finish tightening (29) nuts.
V “SmartParts”, keepthese items onhand in addition tothe service kits for fastrepair andreduction ofdown time.