ARO 66610*-*-C series User manual

E2000 DPRINTED IN U.S.A.
& [phone] D F AX [phone]
INGERSOLL-RAND COMPANY
P.O. BOX 151 DONE ARO CENTER DBRYAN, OHIO 43506Ć0151
OPERATOR’S MANUAL
66610X-X-C
RELEASED: 8-24-89
REVISED: 12-13-00
(REV. T)
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
1” DIAPHRAGM PUMP
1:1 RA TIO (METALLIC)
READ THIS MANUAL CAREFULL Y BEFORE INST ALLING,
OPERA TING OR SER VICING THIS EQUIPMENT .
It is the responsibility of the employer to place this information in the hands of the operator . Keep for future reference.
SERVICE KITS
Refer to Model escription Chart" to match the pump material options.
637118ĆC for Air Section repair (see page 6).
637119ĆXXĆC for Fluid Section repair (see page 4).
637167 Abrasion Resistant Conversion Kit is available for use in heavy
and abrasive material applications (see page 4).
PUMP DA TA
Models See Model escription Chart" for ĆXXX"....
Pump Type Metallic Air Operated ouble iaphragm.
Material See Model escription Chart"....
Weight Aluminum 19 lbs (8.62 kg).... .............
Cast Iron 31 lbs (14.06 kg)..............
Stainless Steel 36 lbs (16.33 kg).........
[add 8 lbs (3.63 kg) for cast iron air motor section]
Maximum Air Inlet Pressure 120 p.s.i. (8.3 bar).........
Maximum Material Inlet Pressure 10 p.s.i. (0.69 bar).....
Maximum Outlet Pressure 120 p.s.i. (8.3 bar)...........
Maximum Flow Rate (flooded inlet) 35 g.p.m. (133 l.p.m.)....
Maximum Particle ize 1/8" dia. (3.2 mm).............
Maximum Temperature Limits:
Polypropylene seats 35_to 150_F(2_to 66_C)...
Kynar (PV F) seats 10_to 200_F (Ć12_to 93_C)...
Dimensional Data See page 8..................
Noise Level @ 70 p.s.i., 60 c.p.m. 64.5 db(A)*.....
* The pump sound pressure levels published here have been updated to an Equivalent Continuous
Sound Level (LAeq) to meet the intent of ANSI S1.13Ć1971, CAGIĆPNEUROP S5.1 using four microĆ
phone locations.
NOTICE: All possible options are shown in the chart. However, certain
combinations may not be recommended, consult a representative or the
factory if you have questions concerning availability.
GENERAL DESCRIPTION
The ARO iaphragm Pump offers high volume delivery even at low air
pressure and a broad range of material compatibility options available.
Refer to the model and option chart. ARO pumps feature stall resistant
design, modular air motor / fluid sections.
Air operated double diaphragm pumps utilize a pressure differential in
the air chambers to alternately create suction and positive fluid pressure in
the fluid chambers, ball checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to
pump and keep up with the demand. It will build and maintain line presĆ
sure and will stop cycling once maximum line pressure is reached (disĆ
pensing device closed) and will resume pumping as needed.
6661XXĆXXXĆC
1'' DIAPHRAGM PUMP
DUAL MANIFOLD
INGLE MANIFOLD
MODEL DESCRIPTION CHART
6661 X X ĆXX X ĆC
6661XX Ć X X X ĆC
637119 ĆXXĆC
IAPHRAGMBALL
FLUID ECTION ERVICE KIT ELECTION
EXAMPLE: MO EL # 666100Ć361ĆC
FLUI SECTION SERVICE KIT # 637119Ć61ĆC
EAT MATERIAL
2 - 316 Stainless Steel 4 - PV F (KynarR)
3 - Polypropylene 8 - Hard 440 Stainless Steel
BALL MATERIAL
1 - Neoprene 4 - T.F.E. (TeflonR) 8 - Polyurethane
2 - Nitrile 5 - E.P.R. A - Stainless Steel
3 - VitonR6 - Acetal E - Santoprene
DIAPHRAGM MATERIAL
1 - Neoprene 3 - Viton 9 - Hytrel
2 - Nitrile 5 - E.P.R. B - Santoprene
4 - T.F.E. (Teflon) / Santoprene
CENTER BODY MATERIAL, THREAD
0 - Aluminum, N.P.T.F.Ć1 2 - Aluminum, BSP
1 - Cast Iron, N.P.T.F.Ć1 3 - Cast Iron, BSP
FLUID CAP / MANIFOLD MATERIAL, INLET / OUTLET
(Steel Hardware) (Stainless Steel Hardware)
0 - Aluminum, Single A - Aluminum, Single
1 - Stainless Steel, Single B - Stainless Steel, Single
2 - Cast Iron, Single C - Cast Iron, Single
9 - Stainless Steel, ual - Stainless Steel, ual

66610XĆXĆCPAGE 2 OF 8
OPERATING AND SAFETY PRECAUTIONS
READ, UNDER TAND, AND FOLLOW THI INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE
EXCE IVE AIR PRE URE
TATIC PARK
HAZARDOU MATERIAL
HAZARDOU PRE URE
WARNING EXCE IVE AIR PRE URE. Can cause personĆ
al injury, pump damage or property damage.
SDo not exceed the maximum inlet air pressure as stated on the
pump model plate.
SBe sure material hoses and other components are able to withĆ
stand fluid pressures developed by this pump. Check all
hoses for damage or wear. Be certain dispensing device is
clean and in proper working condition.
WARNING TATIC PARK. Can cause explosion resulting
in severe injury or death. Ground pump and pumping system.
Sparks can ignite flammable material and vapors.
SThe pumping system and object being sprayed must be
grounded when it is pumping, flushing, recirculating or sprayĆ
ing flammable materials such as paints, solvents, lacquers,
etc. or used in a location where surrounding atmosphere is
conducive to spontaneous combustion. Ground the dispensĆ
ing valve or device, containers, hoses and any object to which
material is being pumped.
SUse the pump grounding screw terminal provided. Use Aro
Part No. 66885Ć1 Ground Kit or connect a suitable ground wire
(12 ga. min.) to a good earth ground source.
Secure pump, connections and all contact points to avoid
vibration and generation of contact or static spark.
SConsult local building codes and electrical codes for specific
grounding requirements.
SAfter grounding, periodically verify continuity of electrical
path to ground. Test with an ohmmeter from each component
(e.g., hoses, pump, clamps, container, spray gun, etc.) to
ground to insure continuity. Ohmmeter should show 100
ohms or less.
Submerse the outlet hose end, dispensing valve or device in
the material being dispensed if possible. (Avoid free streamĆ
ing of material being dispensed.)
SUse hoses incorporating a static wire.
SUse proper ventilation.
SKeep inflammables away from heat, open flames and sparks.
SKeep containers closed when not in use.
WARNING Pump exhaust may contain contaminants. Can
cause severe injury. Pipe exhaust away from work area and
personnel.
SIn the event of a diaphragm rupture material can be forced out
of the air exhaust muffler.
SPipe the exhaust to a safe remote location when pumping hazĆ
ardous or inflammable materials.
SUse a grounded 3/8" min. i.d. hose between the pump and the
muffler.
WARNING HAZARDOU PRE URE. Can result in serious
injury or property damage. Do not service or clean pump,
hoses or dispensing valve while the system is pressurized.
SDisconnect air supply line and relieve pressure from the sysĆ
tem by opening dispensing valve or device and/or carefully
and slowly loosening and removing outlet hose or piping from
pump.
WARNING HAZARDOU MATERIAL . Can cause serious
injury or property damage. Do not attempt to return a pump to
the factory or service center that contains hazardous material.
afe handling practices must comply with local and national
laws and safety code requirements.
SObtain Material afety Data heets on all materials from the
supplier for proper handling instructions.
WARNING EXPLO ION HAZARD. Models containing aluĆ
minum wetted parts cannot be used with III.ĆTrichloroethane,
Methylene Chloride or other Halogenated Hydrocarbon solĆ
vents which may react and explode.
SCheck pump motor section, fluid caps, manifolds and all
wetted parts to assure compatibility before using with solĆ
vents of this type.
CAUTION Verify the chemical compatibility of the pump
wetted parts and the substance being pumped, flushed or reĆ
circulated. Chemical compatibility may change with temperaĆ
ture and concentration of the chemical(s) within the
substances being pumped, flushed or circulated. For specific
fluid compatibility, consult the chemical manufacturer.
CAUTION Maximum temperatures are based on mechaniĆ
cal stress only. Certain chemicals will significantly reduce
maximum safe operating temperature. Consult the chemical
manufacturer for chemical compatibility and temperature limĆ
its. Refer to PUMP DATA on page 1 of this manual.
CAUTION Be certain all operators of this equipment have
been trained for safe working practices, understand it's limitaĆ
tions, and wear safety goggles / equipment when required.
CAUTION Do not use the pump for the structural support of
the piping system. Be certain the system components are
properly supported to prevent stress on the pump parts.
Suction and discharge connections should be flexible conĆ
nections (such as hose), not rigid piped, and should be comĆ
patible with the substance being pumped.
CAUTION Prevent unnecessary damage to the pump. Do
not allow pump to operate when out of material for long periĆ
ods of time.
SDisconnect air line from pump when system sits idle for long
periods of time.
CAUTION Use only genuine ARO replacement parts to asĆ
sure compatible pressure rating and longest service life.
NOTICE Replacement warning labels are available upon
request: `` tatic park PN \ 93616Ć1 & Diaphragm Rupture PN \
93122."
WARNING
CAUTION
NOTICE
= Hazards or unsafe practices which could
result in severe personal injury, death or
substantial property damage.
= Hazards or unsafe practices which could
result in minor personal injury, product or
property damage.
= Important installation, operation or
maintenance information.

PAGE 3 OF 866610XĆXĆC
AIR AND LUBE REQUIREMENTS
WARNING EXCE IVE AIR PRE URE. Can cause pump
damage, personal injury or property damage.
SA filter capable of filtering out particles larger than 50 microns
should be used on the air supply. There is no lubrication required
other than the O" ring lubricant which is applied during assembly or
repair.
SIf lubricated air is present, make sure that is compatible with the NiĆ
trile O" rings in the air motor section of the pump.
OPERATING INSTRUCTIONS
SAlways flush the pump with a solvent compatible with the material
being pumped if the material being pumped is subject to ``setting
up" when not in use for a period of time.
Sisconnect the air supply from the pump if it is to be inactive for a
few hours.
SThe outlet material volume is governed not only by the air supply
but also by the material supply available at the inlet. The material
supply tubing should not be too small or restrictive. Be sure not to
use hose which might collapse.
SWhen the diaphragm pump is used in a forcedĆfeed (flooded inlet)
situation, it is recommended that a Check Valve" be installed at the
air inlet.
SSecure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
MAINTENANCE
Refer to the part views and descriptions as provided on page 4 through
7 for parts identification and Service Kit information.
SCertain ARO Smart Parts" are indicated which should be available
for fast repair and reduction of down time.
SService kits are divided to service two separate diaphragm pump
functions: 1. AIR SECTION, 2. FLUI SECTION. The FLUI SECĆ
TION is divided further to match typical part MATERIAL OPTIONS.
MAINTENANCE CONT’D
SProvide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during serĆ
vice disassembly and reassembly.
SKeep good records of service activity and include pump in prevenĆ
tive maintenance program.
SBefore disassembling, empty captured material in the outlet manĆ
ifold by turning the pump upside down to drain material from the
pump.
FLUID SECTION DISASSEMBL Y
1. Remove top manifold(s).
2. Remove (22) balls, (19) O" rings, (21) seats.
3. Remove (15) fluid caps.
NOTE:Only Teflon diaphragm models use a primary diaphragm (7) and
a backup diaphragm (8). Refer to the auxiliary view in the Fluid Section
illustration.
4. Remove the (6) nut, (7) or (7 / 8) diaphragms and (5) washers.
5. Remove (3) O" rings.
NOTE: o not scratch or mar the surface of (1) diaphragm rod.
FLUID SECTION REASSEMBL Y
SReassemble in reverse order.
SClean and inspect all parts. Replace worn or damaged parts with
new parts as required.
SLubricate (1) diaphragm rod and (2) O" ring with KeyĆLubeR
grease.
SUse ARO PN / 98930ĆT Bullet (installation tool) to aid in installation
of (2) O" ring on (1) diaphragm rod.
SBe certain (7) or (7 / 8) diaphragm(s) align properly with (15) fluid
caps before making final torque adjustments on bolt and nuts to
avoid twisting the diaphragm.
SFor models with Teflon diaphragms: Item (8) Santoprene diaĆ
phragm is installed with the side marked AIR SI E" towards the
pump center body. Install the Teflon iaphragm with the side
marked FLUI SI E" towards the fluid cap.
SReĆcheck torque settings after pump has been reĆstarted and run a
while.
SVitonR, TeflonRand HytrelRare trademarks of the uPont Company, SKynarRis a trademark of Penwalt Corp.,
SSantopreneRis a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. SKeyĆLubeRis a registered trademark of Key Industries

637167
ABRA ION RE I TANT
CONVER ION KIT INCLUDE:
21" eat 93367Ć1 (4)
22" Ball 90532Ć8 (4)
MA TERIAL CODE
[A] = Aluminum
[B] = Nitrile
[C] = Carbon Steel
[CI] = Cast Iron
[Co] = Copper
[ ] = Acetal
[E] = E.P.R.
[H] = Hytrel
[K] = P.V. .F. (Kynar)
[N] = Neoprene
[P] = Polypropylene
[SP] = Santoprene
[SH] = Hard Stainless Steel
[SS] = Stainless Steel
[T] = Teflon
[U] = Polyurethane
[V] = Viton
V mart Parts" keep these items on hand in addition to the ervice Kits for fast repair and reduction of down time.
66610XĆXĆCPAGE 4 OF 8
PARTS LIST / 66610X-X-C FLUID SECTION
FLUID SECTION SER VICE KITS
LKIT INCLUDE: BALL ( ee BALL OPTION, refer to ĆXX in chart below), DIAPHRAGM ( ee DIAPHRAGM
OPTION, refer to ĆXX in chart below), plus O" Ring items: 2, 3, 19 and 93706Ć1 KeyĆLube grease.
EAT OPTION BALL OPTION
ITEM 21" LITEM 22" (1" Dia.) ( ervice Kit ĆXX)
ĆXXX EAT (4) [MTL] ĆXXX BALL (4) [MTL] ĆXXX BALL (4) [MTL]
Ć2XX 90428 [ ] ĆX1X 90532Ć1 [N] ĆX6X 90532Ć6 [D]
Ć3XX 92926 [P] ĆX2X 90532Ć2 [B] ĆX8X 90532Ć8 [U]
Ć4XX 92941 [K] ĆX3X 90532Ć3 [V] ĆXAX 90948 [ ]
Ć8XX 93367Ć1 [ H] ĆX4X 90532Ć4 [T] ĆXEX 90532ĆA [ P]
ĆX5X 90532Ć5 [E]
DIAPHRAGM OPTION
LERVICE KIT L7" / 8" L3" L19"
6661XX
ĆXXX
ĆXX = (Ball)
ĆXX = ( iaphragm) DIAPHRAGM (2) [MTL]
O" Ring (4)
5/8" o.d. [MTL]
O" Ring (4)
1Ć9/16" o.d. [MTL]
ĆXX1 637119ĆX1ĆC 90533Ć1 [N] Y325Ć14 [B] Y325Ć126 [B]
ĆXX2 637119ĆX2ĆC 90533Ć2 [B] Y325Ć14 [B] Y325Ć126 [B]
ĆXX3 637119ĆX3ĆC 90533Ć3 [V] Y328Ć14 [T] Y327Ć126 [V]
ĆXX4 637119ĆX4ĆC 93459Ć4 / 92973ĆB [T/ P] Y328Ć14 [T] Y328Ć126 [T]
ĆXX5 637119ĆX5ĆC 90533Ć5 [E] Y328Ć14 [T] 90534 [E]
ĆXX9 637119ĆX9ĆC 90533Ć9 [H] Y328Ć14 [T] Y327Ć126 [V]
ĆXXB 637119ĆXBĆC 90533ĆB [ P] Y328Ć14 [T] 90534 [E]
WETTED COMMON PART
ALUMINUM
( TEEL HARDWARE)
TAINLE TEEL
( TEEL HARDWARE)
CA T IRON
( TEEL HARDWARE)
TAINLE TEEL
HARDWARE
6661X0Ć 6661X1Ć, 6661X9Ć 6661X2Ć 6661XAĆ, BĆ, CĆ, DĆ
ITEM DE CRIPTION ( IZE IN INCHE ) QTY PART NO. [MT] PART NO. [MT] PART NO. [MT] PART NO. [MT]
V1 Rod (1) 98724Ć1 [C] 98724Ć1 [C] 98724Ć1 [C] 98724Ć1 [C]
L2 O" Ring (3/32" x 3/4" o.d.) k(1) Y330Ć113 [B] Y330Ć113 [B] Y330Ć113 [B] Y330Ć113 [B]
5 Washer - Air ide (3Ć5/8" o.d.) (2) 93441Ć2 [C] 93441Ć2 [C] 93441Ć2 [C] 93441Ć1 [ ]
V6 Washer - Fluid ide (3Ć5/8" o.d.) (2) 93441Ć2 [C] 93441Ć1 [ ] 93441Ć2 [C] 93441Ć1 [ ]
9 Washer (.505" i.d.) (2) 93189Ć1 [ ] 93189Ć1 [ ] 93189Ć1 [ ] 93189Ć1 [ ]
14 crew (1/2" Ć 20 x 1") (2) Y5Ć85ĆK [C] Y5Ć85ĆT [ ] Y5Ć85ĆK [C] Y5Ć85ĆT [ ]
15 Fluid Cap (2) 94945 [A] 91045 [ ] 94277 [CI] aAME ----
16 Manifold(6661X0, 1X1, 1X2, 1XA, 1XB, 1XC) (2) 92001 ( * ) [A] 91044(*) [ ] 94278(*) [CI] aAME ----
17 Outlet Manifold (6661X9Ć, 1XDĆ) (2) ----------- ---- 92846(*) [ ] ----------- ---- 92846(*) [ ]
18 Inlet Manifold (6661X9Ć, 1XDĆ) (2) ----------- ---- 92847(*) [ ] ----------- ---- 92847(*) [ ]
23 pring (6661X9Ć, 1XDĆ) (2) ----------- ---- 22155 [ ] ----------- ---- 22155 [ ]
24 Washer (6661X9Ć, 1XDĆ) (5/16) (8) ----------- ---- Y13Ć5ĆC [C] ----------- ---- Y13Ć5ĆT [ ]
26 Bolt (5/16" Ć 18 x 1") (8) Y6Ć55ĆC [C] Y6Ć55ĆC [C] Y6Ć55ĆC [C] Y6Ć55ĆT [ ]
29 Nut (5/16" Ć 18) (16) Y12Ć5ĆC [C] Y12Ć5ĆC [C] Y12Ć5ĆC [C] Y12Ć5Ć [ ]
43 Ground Lug (1) 93004 [Co] 93004 [Co] 93004 [Co] 93004 [Co]
*NOTE: 66612XĆ, 13XĆ are BSP thread series models, add Ć1" to the manifold part number.
kService Note: Fluid Section Service Kits also include Part No. 93131 (5) O" Rings for repair of ĆB" (pre Ć 8/89) models.
Service Note: Part No. 98930ĆT installation tool is available separately for use with items 1 and 2.

1
2k
3k
5d
6d
78
9
14 ,
15
16
18
19 k
21
22
24
29 ,
21
22
FOR THE
AIR MOTOR ECTION
EE PAGE 6 & 7
VIEW FOR ĆX44 (TEFLON DIAPHRAGM) CONFIGURATION ONLY
dNOTE: Radius edge of parts (5 and 6) is against diaphragm.
AIR IDE
ANTOPRENE
(GREEN when
used as backer)
FLUID IDE
TEFLON
(WHITE)
7
3k
26 ,
17
43
OPTIONAL
1/2 Ć 14 N.P.T.
91046
3/4 Ć 14 N.P.T.
3/4 Ć 14 N.P.T.
1'' OUTLET
1'' INLET
AIR
INLET
FIGURE 1
COLOR CODE
DIAPHRAGM BALL
MATERIAL COLOR COLOR
ACETAL N/A ORANGE
NITRILE RE (-) RE (S)
EPR BLUE (-) BLUE (S)
HYTREL CREAM N/A
NEOPRENE GREEN (-) GREEN (S)
SANTOPRENE CREAM*CREAM
TFE WHITE WHITE
URETHANE N/A RE
VITON YELLOW (-) YELLOW (S)
(-) STRIPE (S) OT
*SEE ITEM 8 IN INSET BELOW.
.TORQUE REQUIREMENTS ,
LUBRICA TION / SEALANTS
kApply KeyĆLube to all O" rings, U" Cups & mating parts.
Apply Loctite Nickel Antiseize to threads of (26) - models
6661XBĆXXXĆC and 6661XDĆXXXĆC only.
NOTE: DO NOT OVERTIGHTEN FA TENER
(14) Diaphragm Bolt 25 Ć 30 ft lbs (33.9 Ć 40.7 Nm),
apply Loctite 271 to threads.
(26) Bolts and (29) nuts 120 Ć 140 in. lbs (13.6 Ć 15.8 Nm).
19 k
16
26 ,
21
22
19 k
6661X9ĆXXXĆC
6661XDĆXXXĆC
6661X9ĆXXXĆC
6661XDĆXXXĆC
23
AIR
IDE
FLUID
IDE
FLUID
IDE
AIR
IDE
CRO ECTION VIEW OF DIAPHRAGM
1
8
6
42
3
7
5
Torque equence
PAGE 5 OF 866610XĆXĆC
PARTS LIST / 66610X-X-C FLUID SECTION

66610XĆXĆCPAGE 6 OF 8
PARTS LIST / 66610X-X-C AIR MOT OR SECTION
nIndicates parts included in 637118ĆC Air ection ervice Kit.
ERVICE KIT NOTE: ervice Kit 637118ĆC 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 DE CRIPTION ( ize in Inches) QTY PART NO. [MTL] ITEM DE CRIPTION ( ize In Inches) QTY PART NO. [MTL]
101 Motor Body (66610X, 12X) (1) 94743 [A]
Motor Body (66611X, 13X) (1) 94741 [CI]
n102 O" Ring (1/16" x 1" o.d.) (2) Y325Ć20 [B]
V103 leeve (1) 94527 [D]
n104 Retaining Ring, TruArc (.925" i.d.) (2) Y145Ć25 [C]
105 crew/Wshr (1/4"Ć20x5/8")(ĆXX0,1,2,9) (8) 93860 [C]
Cap crew (1/4"Ć20x5/8")(ĆXXA,B,C,D) (8) Y6Ć42ĆT [ ]
106 Lockwasher (1/4") (6661XA, 1XB, 1XC, 1XD) (7) Y14Ć416ĆT [ ]
107 Leg (6661X0, 1X1, 1X2, 1X9) (2) 92003 [C]
Leg (6661XA, 1XB, 1XC, 1XD) (2) 92003Ć1 [ ]
n108 Gasket (with notch) (1) 92878 [B/Ny]
V109 Piston (1) 92011 [D]
n110 U" Cup (3/16" x 1Ć3/8" o.d.) (1) Y186Ć51 [B]
V111 pool (66610X, 12X) (1) 92005 [A]
pool (66611X, 13X) (1) 93047 [C]
V112 Washer (1.557" o.d.) (5) 92877 [Z]
n113 O" Ring (small) (1/8" x 1Ć1/4" o.d.) (5) Y325Ć214 [B]
n114 O" Ring (large) (3/32" x 1Ć9/16" o.d.) (6) Y325Ć126 [B]
V115 pacer (4) 92876 [Z]
V116 pacer (1) 92006 [Z]
n117 Gasket (1) 92004 [B/Ny]
118 Pilot Rod (1) 93309Ć1 [C]
n119 O" Ring (1/8" x 3/4" o.d.) (4) 93075 [U]
120 pacer (3) 115959 [Z]
121 leeve Bushing (2) 98723Ć1 [Bz]
n122 O" Ring (3/32" x 9/16" o.d.) (2) 94820 [U]
n123 crew (#8 Ć 32 x 3/8") (4) Y154Ć41 [C]
124 tud (5/16" Ć 18 x 1Ć3/4") (6661X0, 1X1, 1X2, 1X9) (16) 92866 [C]
tud (5/16" Ć 18 x 1Ć3/4") (6661XA, 1XB, 1XC, 1XD) (16) 92866Ć1 [ ]
128 Pipe Plug (1/8 Ć 27 N.P.T. x 1/4") (1) Y227Ć2ĆL [C]
195 Button Head crew (1/4" Ć 20 x 1/4") (3) 94987 [ ]
201 Muffler (1) 93110 [C]
nKeyĆLube O" Ring Lubricant (1) 93706Ć1
10 Pak of KeyĆLube 637175
nervice Kits include: Y212Ć101 (2) crews (#10 Ć 32 x 1/4") used on units mf'd beĆ
tween 8/90 and 4/92 to retain the pilot bushing.
AIR MOT OR SECTION SER VICE
ervice is divided into two parts - 1. Pilot Valve, 2. Major Valve.
GENERALREA EMBLY NOTE :
SAir Motor Section Service is continued from Fluid Section repair.
SInspect and replace old parts with new parts as necessary. Look for
deep scratches on metallic surfaces, and nicks or cuts in O" rings.
STake precautions to prevent cutting O" rings upon installation.
SLubricate O" rings with KeyĆLube grease.
So not overĆtighten fasteners, refer to torque specification block on
view.
SReĆtorque fasteners following restart.
PILOT V AL VE DISASSEMBL Y
1. Remove (104) retaining ring.
2. Remove (123) screws and (122) O" rings.
3. Remove (118) piston rod, (121) sleeve bushing, (119) O" rings and
(120) spacers from the (101) motor body.
4. Remove (103) sleeve and (102) O" rings.
PILOT V AL VE REASSEMBL Y
1. Replace two (102) O" rings if worn or damaged and reinstall (103)
sleeve.
2. Install one of the (121) sleeve bushings, (119) O" rings, (120)
spacers and the remaining (121) bushing.
3. Carefully push (118) pilot rod into bushings etc. and retain on each
end with the two (122) O" rings, retain with (123) screws.
4. Replace (104) retaining rings.
nParts Y145Ć26 (1.156" i.d.) (Qty 2) Retaining Rings and Y325Ć24 O" Rings
(Qty 2) are included in the Service Kit for the repair of larger pumps.
MATERIAL CO E
[A] = Aluminum [CI] = Cast Iron [P] = Polypropylene
[B] = Nitrile [ ] = Acetal [U] = Polyurethane
[Bz] = Bronze [N] = Neoprene [SS] = Stainless Steel
[C] = Carbon Steel [Ny] = Nylon [Z] = Zinc
MAJOR V AL VE DISASSEMBL Y
1. Remove (107) plate (or leg depending on model), (108 and 117)
gaskets.
2. On the side opposite the air inlet, push on the inner diameter (111)
spool. This will force the (109) piston out. Continue pushing the
(111) spool and remove. Check for scratches and gouges.
3. Reach into the air section (exhaust side) and remove (116) spacer,
(115) spacers, (113) O" rings, (114) O" rings, (112) washers, etc.
Check for damaged O" rings.
MAJOR V AL VE REASSEMBL Y
1. Replace (112) washer, (114) O" ring and (113) O" ring onto (115)
spacer and insert etc.
NOTE: Be careful to orient spacer legs away from blocking inĆ
ternal ports.
2. Lubricate and carefully insert (111) spool.
3. Install (117) gasket and (107).
4. Lubricate and install (110) packing cup and insert (109) piston into
(air inlet side) cavity, the (110) packing cup lips should point outĆ
ward.
5. Install (108) gasket and replace (107).
VSmart Parts" Keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.

PAGE 7 OF 866610XĆXĆC
PARTS LIST / 66610X-X-C AIR MOT OR SECTION
MAJOR VALVE
ee cross section detail Figure 3.
PILOT V ALVE
101
118 k
111
112
k113
k114
115 116
117
119 k
102 k
103 k
104
123 z121
122 k
120
107
108
109
110 k
106
.105
IMPORTANT
BE CERTAIN TO ORIENT (115) PACER LEG
AWAY FROM BLOCKING INTERNAL PORT
WHEN REA EMBLING AIR ECTION.
MAJOR VALVE CRO ECTION DETAIL
201
109 110k112 114k113k115 111k116
FIGURE 2
FIGURE 3
124
. T ORQUE REQUIREMENTS ,
NOTE: DO NOT OVERTIGHTEN FA TENER
(105) 40 Ć 50 in. lbs (4.5 Ć 5.6 Nm).
LUBRICATION / EALANT
kApply KeyĆLube grease to all O" rings, U" Cups &
mating parts.
zApply Loctite 271 to threads.
gApply DriĆLoc 204 to threads.
102 k
128
104
121
z123
107
g195
195 g

66610XĆXĆCPAGE 8 OF 8
TROUBLE SHOOTING
Product discharged from exhaust outlet.
SCheck for diaphragm rupture.
SCheck tightness of diaphragm nut.
Air bubbles in product discharge.
SCheck connections of suction plumbing.
SCheck O" rings between intake manifold and fluid caps.
SCheck tightness of diaphragm nut.
Low output volume, erratic flow, or no flow.
SCheck air supply.
SCheck for plugged outlet hose.
SCheck for kinked (restrictive) outlet material hose.
SCheck for kinked (restrictive) or collapsed inlet material hose.
SCheck for pump cavitation - suction pipe should be sized at least as
large as the inlet thread diameter of the pump for proper flow if high
viscosity fluids are being pumped. Suction hose must be a nonĆcolĆ
lapsing type, capable of pulling a high vacuum.
SCheck all joints on the inlet manifolds and suction connections.
These must be air tight.
SInspect the pump for solid objects logged in the diaphragm chamĆ
ber or the seat area.
DIMENSIONAL DA TA
( imensions shown are for reference only, they are displayed in inches and millimeters (mm).
8"
(203 mm)
12Ć1/2"
(318 mm)
11Ć9/16"
(294 mm)
8Ć9/16"
(217.5 mm)
1 Ć 11Ć1/2 N.P.T.F.Ć1
(66610X, 66611X)
1 Ć 11 B. .P.
(66612X, 66613X)
4"
(102 mm)
1Ć1/4"
(32 mm)
PN 97999Ć100
7Ć5/16"
(186 mm)
AIR INLET
1/4 Ć 18 N.P.T.
13/32" LOT
(10 mm)
MATERIAL
INLET
MATERIAL
OUTLET
FIGURE 4
6Ć1/4"
(159 mm)
6Ć1/2"
(165 mm)