OPERATOR’S MANUAL
6661AX-X-C
RELEASED:
REVISED:
(REV. W)
9-11-89
9-19-13
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
1” DIAPHRAGM PUMP
1:1 RATIO (NON-METALLIC)
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING 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 Description Chart”to match the pump material options.
637118-C for Air Section repair (see page 6).
637161-XX-C for Fluid Section repair (see page 4)
.
PUMP DATA
Models . . . . . . . see Model Description Chart for “-XXX”.
Pump Type . . . . Non-Metallic, Air Operated, Double Diaphragm
Material . . . . . . see Model Description Chart
Weight 6661A3-, 1AF-, 1AJ-, 1AL-. . . . 20.25 lbs (9.19 kgs)
6661AP-, 1AR-, 1AS-, 1AT-. . . .20.25 lbs (9.19 kgs)
6661XF-XXX-C
6661XG-XXX-C
6661XR-XXX-C
6661XJ-XXX-C
6661XK-XXX-C
6661XL-XXX-C
6661XN-XXX-C
6661XS-XXX-C
6661XT-XXX-C
6661A4-, 1AG-, 1AK-, 1AN-. . . 28.5 lbs (12.93 kgs)
6661B3-, 1BF-, 1BJ-, 1BL-. . . . . 28.8 lbs (13.06 kgs
6661BP-, 1BR-, 1BS-, 1BT-. . . . .28.8 lbs (13.06 kgs)
6661X3-XXX-C
6661X4-XXX-C
6661XP-XXX-C
6661B4-, 1BG-, 1BK-, 1BN-. . . . 37 lbs (16.78 kgs)
Figure 1
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). . 47 g.p.m. (177.9 l.p.m.)
Displacement / Cycle @ 100p.s.i
Standard Diaphragm. . . . . . . . . . . . . . . . . 0.17 gal (.64 lit)
PTFE Composite Diaphragm. . . . . . . . . . 0.14 gal (.525 lit)
MODEL DESCRIPTION CHART
6661 X X - X X X - C
CENTER BODY MATERIAL
A - Aluminum
B - Cast Iron
FLUIDCAP/MANIFOLD MATERIAL
1/8”dia. (3.2 mm)
Maximum Particle Size (semi-solids) . . . .
3 - Colorless Polypropylene flange (3-piece manifold)
4 - PVDF (KynarR) flange (3-piece manifold)
Maximum Temperature Limits
F - Colorless Polypropylene flange (one piece manifold)
Polypropylene
PVDF (Kynar). . . . . . . 10° to 200° F (-12° to 93° C)
35° to 175° F (2° to 79° C)
. . . . . . .
G - PVDF (Kynar) flange (one piece manifold)
J
- Colorless Polypropylene, N.P.T.(onepiecemanifold)
K - PVDF (Kynar), N.P.T. (one piece manifold)
Dimensional Data. . . . . . . . . . . see page 8
L - Colorless Polypropylene, B.S.P. (onepiecemanifold)
N - PVDF (Kynar), B.S.P. (one piece manifold)
Noise Level @ 70 p.s.i. - 60 c.p.m . . . . . 64.5 db (A)
P - Gray Polypropylene flange (3-piece manifold)
R - Gray Polypropylene flange (one piece manifold)
S - Gray Polypropylene, N.P.T. (one piece manifold)
T - Gray Polypropylene, B.S.P. (one piece manifold)
Tested with 93110 muffler installed.
The pump sound pressure levels published here have been updated to an Equivalent Con-
tinuous Sound Level (LAeq) to meet the intent of ANSI S1.13-1971, CAGI-PNEUROP S5.1 using
four microphone locations.
SEAT MATERIAL
NOTICE: All possible options are shown in the chart, however, certain combina-
tions may not be recommended, consult a representative or the factory if you
have questions concerning availability.
2 - 316 Stainless Steel
3 - Polypropylene
4 - PVDF (Kynar)
8 - Hard 440 Stainless Steel
BALL MATERIAL
1 - Neoprane
8 - Polyurethane
GENERAL DESCRIPTION
2 - Nitrile
A - 316 Stainless Steel
R
R
3 - Viton
E - Santoprene
The ARO Diaphragm Pump offers high volume delivery even at low air
pressures and a broad range of material compatibility options available.
Refer to the model and option chart. ARO pumps feature stall resis-
tant 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 pres-
sure in the fluid chambers, ball checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will con-
tinue to pump and keep up with the demand.
4 - PTFEM
5 - E.P.R.
DIAPHRAGM MATERIAL
1- Neoprene 3 - Viton
2- Nitrile
4 - PTFE / Santoprene
M - Medical Grade Santoprene
6 - Composite PTFE 9 - Hytrel®
5 - E.P.R.
B - Santoprene
M - Medical Grade Santoprene
FLUID SECTION SERVICE KIT SELECTION
6661XX - X X X - C
EXAMPLE: MODEL # 6661A3-311-C
FLUID SECTION SERVICE KIT # 637161-11-C
X X
637161
BALL
- C
DIAPHRAGM
It will build and maintain line pressure and will stop cycling once
maximum line pressure is reached (dispensing device closed) and
will resume pumping as needed.
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET - BRYAN, OHIO 43506
© 2013
CCN 81660326
(800) 495-0276 FAX (800) 892-6276
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AIR AND LUBE REQUIREMENTS
FLUID SECTION REASSEMBLY
WARNING
EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
A filter capable of filtering out particles larger than 50
microns should be used on the air supply. There is no lu-
brication required other than the “O” ring lubricant which is
applied during assembly or repair.
Reassemble in reverse order.
Clean and inspect all parts. Replace worn or damaged
parts with new parts as required.
Lubricate (1) diaphragm rod and (2) “O” ring with
Key-Lube® grease.
Use ARO PN / 98930-T Bullet (installation tool) to aid in
installation of (2) “O”ring on (1) diaphragm rod.
If lubricated air is present, make sure that is compatible
with the Nitrile “O” rings in the air motor section of the
pump.
For 6661XX-XX6-C:
Attach a regulated airline to the pump inlet; gradually in-
creasing the air pressure (6-8 p.s.i) to check which side of
the pump with air blowing out, and then shut down the
air supplier.
OPERATING INSTRUCTIONS
Always 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.
Disconnect the air supply from the pump if it is to be inactive
for a few hours.
The 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 restric-
tive. Be sure not to use hose which might collapse.
When the diaphragm pump is used in a forced-feed (flooded
inlet) situation, it is recommended that a “Check Valve” be
installed at the air inlet.
Fasten (7) diaphragm with (5) washer into (1) diaphragm
rod, and insert them into (101) Center body from the
chamber identified with blowing air in the previous step.
Install (15) fluid cap.
Thread the other side of (7) diaphragm with (5) washer
into (1) diaphragm rod, but do not tighten it.
Record the angle for the misalignment between (7) dia-
phragm hole and (101) center body holes, then unthread
the (7) diaphragm and place proper Qty. of (30) shims
between (5) washer and (1) diaphragm rod.
Attach a regulated airline to the pump inlet, gradually
increasing the air pressure (6-8 psi) until the diaphragm
shift to the other site, shut down the air supply.
Install the second (15) fluid cap.
Secure the diaphragm pump legs to a suitable surface to in-
sure against damage by vibration.
MAINTENANCE
Note: for details, refer to service kits manual 48495949.
For other models:
Refer to the part views and descriptions as provided on page 4
through 7 for parts identification and Service Kit information.
Be 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.
For models with PTFE diaphragms: Item (8) Santoprene
diaphragm is installed with the side marked “AIR SIDE” to-
wards the pump center body. Install the PTFE Diaphragm
with the side marked “FLUID SIDE”towards the fluid cap.
Re-check torque settings after pump has been restarted
and run awhile.
Certain ARO “Smart Parts” are indicated which should be
available for fast repair and reduction of down time.
Service kits are divided to service two separate dia-
phragm pump functions: 1. AIR SECTION, 2. FLUID SEC-
TION. The FLUID SECTION is divided further to match
typical part MATERIAL OPTIONS.
Provide a clean work surface to protect sensitive internal
moving parts from contamination from dirt and foreign
matter during service disassembly and reassembly.
Keep good records of service activity and include pump
in preventive maintenance program.
Fluid Side
Air Side
Air
Side
Before disassembling empty captured material in the
outlet manifold by turning the pump upside down to
drain material from the pump.
Fluid
Side
FLUID SECTION DISASSEMBLY
1. Remove top manifold(s).
2. Remove (22) balls, (19 and 33) “O”rings and (21) seats.
3. Remove (15) fluid caps.
CROSS SECTION VIEW OF DIAPHRAGMS
(Refer to ꢀgure 3, page 5)
NOTE: Only PTFE diaphragm models use a primary dia-
phragm (7) and a backup diaphragm (8). Refer to the auxil-
iary view in the Fluid Section illustration.
For 6661XX-XX6-C:
4. Remove (7) diaphragm, (5) washers and (30) shims.
For other models:
3
1
5
7
8
6
4. Remove (6) nut, (7) or (7 / 8) diaphragms and (5) washers.
5. Remove (3 and 4) “O”rings.
2
4
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.
Torque Sequence
(Refer to ꢀgure 3, page 5)
Figure ꢀ
Viton and Hytrel are registered trademarks of the DuPont Company. Kynar is a registered trademark of Penwell Corp
®
®
®
®
Santoprene is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. Key-Lube is a registered trademark of Key Industries
®
®
6661AX-X-C
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PARTS LIST / 6661AX-X-C FLUID SECTION
FLUID SECTION SERVICE KITS
Kits include: Balls (see Ball Option, refer to -XX in chart below), Diaphragms (see Diaphragm Option, refer to -XX in chart below),plus “O” ring items (ꢀ), (3), (ꢁ),
(19) and (33) (listed below) plus a 93706-1 Key-Lube grease packet (see page 6).
MATERIAL CODE
[B] = Nitrile
[C] = Carbon Steel
[CP] = Composite PTFE
[E] = E.P.R.
SEAT OPTIONS
6661XX-XXX-C
BALL OPTIONS
6661XX-XXX-C
[H] = Hytrel
(1-1/ꢁ” dia.)
“ꢀ1”
“ꢀꢀ”
[K] = P.V.D.F. (Kynar)
[N] = Neoprene
[P] = Polypropylene
[SH] = Hard Stainless Steel
[SP] = Santoprene
[SS] = Stainless Steel
[T] = PTFE
-XXX Seat
-ꢀXX 95093
Qty [Mtl]
(ꢁ)
-XXX Ball
Qty [Mtl] -XXX Ball
Qty [Mtl]
[SS]
[P]
-X1X 93ꢀ78-1 (ꢁ)
-XꢀX 93ꢀ78-ꢀ (ꢁ)
-X3X 93ꢀ78-3 (ꢁ)
-XꢁX 93ꢀ78-ꢁ (ꢁ)
-X5X 93ꢀ78-5 (ꢁ)
[N]
[B]
[V]
[T]
[E]
-X8X 93ꢀ78-8
-XAX 9ꢀꢁ08
(ꢁ)
(ꢁ)
[U]
[SS]
[SP]
-3XX 9ꢁ707-1 (ꢁ)
-ꢁXX 9ꢁ707-ꢀ (ꢁ)
[K]
-XEX 93ꢀ78-A (ꢁ)
-8XX 9ꢁ706
(ꢁ)
[SH]
-XMX 93ꢀ78-M (ꢁ) [SPM]
[U] = Polyurethane
[V] = Viton
DIAPHRAGM OPTIONS 6661XX-XXX-C
SERVICE KIT
-XX = (Ball)
-XXX -XX = (Diaphragm) Diaphragm(ꢀ)
“7” / “8”
"3"
O” Ring
“ꢁ”
“O” Ring
“19”
"O” Ring
“33”
"O” Ring
(
)
(5/8” o.d.)
(11/16” o.d.)
(ꢀ-1/8” o.d.)
(1-5/8” o.d.)
[Mtl]
[Mtl]
[Mtl]
[Mtl]
[Mtl]
[B]
-XX1 637161-X1-C
-XXꢀ 637161-Xꢀ-C
-XX3 637161-X3-C
-XXꢁ 637161-Xꢁ-C
90533-1
90533-ꢀ
90533-3
[N] Y3ꢀ5-1ꢁ [B] Y3ꢀ5-11ꢀ [B] Y3ꢀ5-ꢀꢀ5 [B] Y3ꢀ5-ꢀꢀ0
[B] Y3ꢀ5-1ꢁ [B] Y3ꢀ5-11ꢀ [B] Y3ꢀ5-ꢀꢀ5 [B] Y3ꢀ5-ꢀꢀ0
[V] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] Y3ꢀ7-ꢀꢀ5 [V] Y3ꢀ7-ꢀꢀ0
[B]
[V]
[T]
93ꢁ59-ꢁ / 9ꢀ973-B [T/SP] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] 93ꢀ8ꢀ
[T] 93ꢀ81
[E] 93ꢀ79
-XX5 637161-X5-C
-XX9 637161-X9-C
-XXB 637161-XB-C
-XXM 637161-XM-C
-XX6 ꢁ8ꢁ9596ꢁ
90533-5
90533-9
90533-B
90533-M
ꢁ8ꢁ90056
[E] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] 93ꢀ80
[E]
[V]
[E]
[T]
[T]
[H] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] Y3ꢀ7-ꢀꢀ5 [V] Y3ꢀ7-ꢀꢀ0
[SP] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] 93ꢀ80
[SPM] Y3ꢀ8-1ꢁ [T] Y3ꢀ8-11ꢀ [T] 93ꢀ8ꢀ
[E] 9ꢀ761
[T] 93ꢀ81
[T] 93ꢀ81
[CP]
93ꢀ8ꢀ
Quantity of eight (8) required for models 6661X3-X, 6661Xꢁ-X and 6661XP-X.
Quantity of four (ꢁ) required for models 6661XF-X, 6661XG-X, 6661XJ-X, 6661XK-X, 6661XL-X, 6661XN-X, 6661XR-X, 6661XS-X and 6661XT-X. v of eight (8) required
MANIFOLD / FLUID CAP MATERIAL OPTIONS 6661XX-XXX-C
POLYPROPYLENE
P.V.D.F.
6661X3-
6661XP-
6661XF-
6661XR-
6661XJ-, XL-
6661XS-, XT-
6661Xꢁ-
6661XG-
6661XK-, XN
(Size in inches)
(1/ꢀ” - ꢀ0)*
Item Description
Qty Part No. [Mtl] Part No. [Mtl] Part No.
[Mtl] Part No.
[P] 93ꢀ39-ꢀ
[P] 93ꢀ35-ꢀ
93ꢀ36-ꢀ
[Mtl] Part No. [Mtl] Part No. [Mtl]
6
Diaphragm Nut
(ꢀ) 93ꢀ39-1 [P] 93ꢀ39-1 [P] 93ꢀ39-1
[K] 93ꢀ39-ꢀ [K] 93ꢀ39-ꢀ
[K]
[K]
15 Fluid Cap
3ꢁ Manifold, Outlet
(ꢀ) 93ꢀ35-[
(ꢀ) 93ꢀ36-[
(ꢀ) 93ꢀ37-[
]
]
]
]
[P] 93ꢀ35-[
]
[P] 93ꢀ35-[ ]
[K] 93ꢀ35-ꢀ [K] 93ꢀ35-ꢀ
(Top)
[P]
[P]
[K]
[K]
(Bottom)
35 Manifold, Foot
36 Swivel
93ꢀ37-ꢀ
(ꢀ) 93ꢀ38-[
(8) 93ꢀ83
[P]
[SS]
93ꢀ38-ꢀ
93ꢀ83
[K]
[SS]
37 Clamp
(1/ꢁ” - ꢀ0 x 1-1/ꢀ”)
38 Bolt
39 Nut
(8) Y8ꢁ-ꢁ03-T [SS]
Y8ꢁ-ꢁ03-T [SS]
(1/ꢁ” - ꢀ0)
(8) Y1ꢀ-ꢁ-S
[SS]
Y1ꢀ-ꢁ-S
[SS]
(Bottom)
(Top)
60 Inlet Manifold
(1)
(1)
957ꢁ6-[
957ꢁꢁ-[
]
]
[P] 957ꢁ7-[
[P] 957ꢁ5-[
]
]
[P]
[P]
957ꢁ6-ꢀ [K] 957ꢁ7-[
957ꢁꢁ-ꢀ [K] 957ꢁ5-[
]
]
[K]
[K]
61 Outlet Manifold
For N.P.T.F. thread colorless Polyproyplene models (6661XJ-), use “-1”. For BSP thread colorless Polyproyplene models (6661XL-), use “-3”.
For N.P.T.F. thread gray Polyproyplene models (6661XS-), use “-5”. For BSP thread gray Polyproyplene models (6661XT-), use “-6”.
* For 6661XX-XX6-C, diaphragm nut (6) is not needed.
For N.P.T.F. thread models (6661XK-), use “-2”. For BSP thread models (6661XN-), use “-4”.
For colorless Polyproyplene models (6661X3-, 6661XF-, 6661XJ-, 6661XL-), use “-1”. For gray Polyproyplene models (6661XP-, 6661XR-, 6661XS-, 6661XT-), use “-3”.
COMMON PARTS
(size in inches)
Item Description
1 Rod
Qty Part No. [Mtl]
(1) ꢁ8ꢁ89660 [C]
(Size in inches)
Item Description
Qty Part No.
[Mtl]
(6661XX-XX6-C)
(3/8” - 16 x ꢀ-1/ꢁ”)
ꢀ6 Bolt
(ꢁ) Y6-610-T [SS]
(other models)
(1) 987ꢀꢁ-1
[C]
(5/16” - 18 x ꢁ-1/ꢀ”)
ꢀ7 Bolt
(ꢁ) Y6-518-T
(ꢁ) 93359-1
(1ꢀ) 93886
[SS]
[SS]
[SS]
[C]
(3/3ꢀ” x 3/ꢁ” o.d.)
ꢀ
5
‘‘O” Ring
Plate
(1) Y330-113 [B]
(5/16” i.d.)
ꢀ8 Washer
(ꢀ) 93ꢁꢁ1-ꢀ
(8) 93360-1
(ꢁ) Y6-67-T
[C]
(5/16” - 18)
ꢀ9 Nut
(13/3ꢀ” i.d.)
ꢀꢁ Washer
[SS]
[SS]
(6661XX-XX6-C)
*
30 Shim
(
)
ꢁ8ꢁ9936ꢀ
(3/8” - 16 x 1-1/ꢀ”)
ꢀ5 Bolt
“The quantity is between 0 to 5, shims are not shown in the exploded view.
“Smart Parts”keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
For service, shim pack (48499222) can be purchased, refer to diaphragm service kit manual 48495949 for details.
*
Page ꢁ of 8
6661AX-X-C
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PARTS LIST / 6661AX-X-C FLUID SECTION
36
33�
38�
61
6661XJ -X
6661XK-X
6661XL-X
6661XN-X
6661XS-X
6661XT-X
37
26�
24
34
61
6661XF-X
6661XG-X
6661XR-X
FOR THE
AIR MOTOR SECTION
SEE PAGES 6 & 7
39
2
�
5
22
19�
21
33�
29�
15
28
1
3
�
27�
7
4
�
6
�
COLOR CODE
DIAPHRAGM
COLOR
BALL
COLOR
MATERIAL
EPR
LUBRICATION /SEALANTS
�Apply Key-Lube grease to all “O”
rings, “U” Cups & mating parts.
36
33�
Blue (--)
Cream
Green (--)
Red (--)
Blue (•)
N/A
Green
(•)
Red (•)
Cream
N/A
22
HYTREL
NEOPRENE
NITRILE
SANTOPRENE
SANTOPRENE
(Backup)
19�
21
Cream
Green
*
PTFE
White
White
Red
33�
POLYURETHANE N/A
VITON Yellow (--)
(--) STRIPE
Yellow (•)
24
(•)
DOT
8
25�
AIR SIDE
SANTOPRENE
(GREEN when
used as backer)
35
60
6661XJ-X
6661XK-X
6661XL-X
6661XN-X
6661XS-X
6661XT-X
7
FLUID SIDE
PTFE
(WHITE)
VIEW FOR -XX4 (PTFE DIAPHRAGM) CONFIGURATION ONLY
�TORQUE REQUIREMENTS�
60
NOTE: DO NOT OVERTIGHTEN FASTENERS
(6) Diaphragm Nut 25 - 30 ft lbs (33.9 - 40.7 Nm),
lubricate face with Key-Lube grease and
6661XF-X
6661XG-X
6661XR-X
apply Loctite 271 to threads.
(25, 26, 27, 29) Fluid Caps / Manifold Bolts 120 - 140 in. lbs
(13.6 - 15.8 Nm), apply Loctite Nickel Antiseize to threads.
(38) Bolt 40 - 45 in. lbs (4.5 - 5.1 Nm).
Figure 3
6661AX-X-C
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PARTS LIST / 6661AX-X-C AIR MOTOR SECTION
Indicates 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 other
parts that may not be needed to service this model.
(size)
(size)
Item
101
Description
Motor Body
Qty Part No.
(1) 9ꢁ7ꢁ3
[Mtl]
[A]
Item Description
116 Spacer
Qty Part No.
(1) 9ꢀ006
[Mtl]
[Z]
(6661AX-XXX-C)
(6661BX-XXX-C)
(1) 9ꢁ7ꢁ1
(ꢀ) Y3ꢀ5-ꢀ0
(1) 9ꢁ5ꢀ7
(ꢀ) Y1ꢁ5-ꢀ5
(8) Y6-ꢁꢀ-T
[CI]
[B]
117 Gasket
118 Pilot Rod
119 “O” Ring
1ꢀ0 Spacer
(1) 9ꢀ00ꢁ
(1) 93309-1
(ꢁ) 93075
[B/Ny]
[C]
(1/16” x 1” o.d.)
10ꢀ “O” Ring
(1/8” x 3/ꢁ” o.d.)
103 Sleeve
[D]
[C]
[U]
(.9ꢀ5” i.d.)
10ꢁ Retaining Ring, TruArc
(3) 115959
(ꢀ) 987ꢀ3-1
(ꢀ) 9ꢁ8ꢀ0
[Z]
(1/ꢁ”-ꢀ0 x 5/8”)
105 Screw
[SS]
1ꢀ1 Sleeve Bushing
[Bz]
[U]
(1/ꢁ”)
(3/3ꢀ” x 9/16” o.d.)
106 Lockwasher
(8) Y1ꢁ-ꢁ16-T [SS]
1ꢀꢀ “O” Ring
(#8 - 3ꢀ x 3/8”)
107 Plate
(ꢀ) 93707-1
(1) 9ꢀ878
(1) 9ꢀ011
(1) Y186-51
[SS]
[B/Ny]
[D]
1ꢀ3 Screw
1ꢀꢁ Screw
(ꢁ) Y15ꢁ-ꢁ1
(1ꢀ) 93ꢀ77
(1) Yꢁ3-5-C
(1) Yꢀꢀ7-ꢀ-L
[C]
(with notch)
(5/16” - 18 x ꢀ-3/8”)
(1/8 - ꢀ7 N.P.T. x 1/ꢁ”)
108 Gasket
[SS]
[C]
109 Piston
1ꢀ8 Pipe Plug
1ꢀ8 Pipe Plug
(3/16” x 1-3/8” o.d.)
(1/8-ꢀ7 N.P.T. x 1/ꢁ”)
110 “U” Cup
[B]
[C]
111
(6661AX-XXX-C)
(1/ꢁ” - ꢀ0 x
Spool
(1) 9ꢀ005
[A]
195 Button Head Screw
ꢀ01 Muffler
1/ꢁ”) (3) 9ꢁ987
[SS]
[C]
(6661BX-XXX-C)
(1.557” o.d.)
(1) 930ꢁ7
[C]
[Z]
[B]
[B]
[Z]
(1) 93110
(1) 93706-1
(10) 637175
11ꢀ Washer
(5) 9ꢀ877
Key-Lube “O” Ring Lubricant
Pak of 10 Key-Lube
(1/8” x 1-1/ꢁ” o.d.)
113 “O” Ring
11ꢁ “O” Ring
(5) Y3ꢀ5-ꢀ1ꢁ
(6) Y3ꢀ5-1ꢀ6
(ꢁ) 9ꢀ876
(3/3ꢀ” x 1-9/16” o.d.)
Service Kits include: Yꢀ1ꢀ-101 (ꢀ) Screws (#10 - 3ꢀ x 1/ꢁ”)
used on units manufactured between 8/90 and ꢁ/9ꢀ to
retain the pilot bushing.
115 Spacer
MATERIAL CODE
AIR MOTOR SECTION SERVICE
[A] = Aluminum
[B] = Nitrile
[Bz] = Bronze
[CI] = Cast Iron
[D] = Acetal
[N] = Neoprene
[SS] = Stainless Steel
[U] = Polyurethane
[Z] = Zinc
Service is divided into two parts − 1. Pilot Valve, ꢀ. Major
Valve. GENERAL REASSEMBLY NOTES:
[C] = Carbon Steel [NY] = Nylon
Air Motor Section Service is continued from Fluid Section
repair.
MAJOR VALVE DISASSEMBLY
Inspect and replace old parts with new parts as neces-
sary. Look for deep scratches on metallic surfaces, and
nicks or cuts in “O”rings.
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 di-
ameter (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.
Take precautions to prevent cutting “O” rings upon instal-
lation.
Lubricate “O”rings with Key-Lube grease.
Do not overtighten fasteners, refer to torque specification
block on view.
Re-torque fasteners following restart.
PILOT VALVE DISASSEMBLY
MAJOR VALVE REASSEMBLY
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.
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 internal ports.
2. Lubricate and carefully insert (111) spool.
3. Install (117) gasket and (107).
PILOT VALVE REASSEMBLY
4. Lubricate and install (110) packing cup and insert (109)
piston into (air inlet side) cavity, the (110) packing cup
lips should point outward.
1. Replace two (102) “O” rings if worn or damaged and rein-
stall (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 re-
tain on each end with the two (122) “O” rings, retain with
(123) screws.
5. Install (108) gasket and replace (107).
4. Replace (104) retaining rings.
“Smart Parts”Keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
Page 6 of 8
6661AX-X-C
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PARTS LIST / 6661AX-X-C AIR SECTION
IMPORTANT
BE CERTAIN TO ORIENT (115) SPACER LEGS
AWAY FROM BLOCKING INTERNAL PORTS
WHEN REASSEMBLING AIR SECTION.
117
105
106
�
111
116
115
�114
�113
107
112
MAJOR VALVE
See cross section detail Figure 5.
Figure 4
201
128
�
195
101
104
121
123
124
�
195�
102
�
103
�
108
102
�
106
104
�105
107
109
110
119
�
121 123�
�
118
�
120
PILOT VALVE
122
�
MAJOR VALVE CROSS SECTION DETAILS
114
�
109 110
�
113
�
112
115
111�
116
�
TORQUE REQUIREMENTS �
NOTE: DO NOT OVERTIGHTEN FASTENERS
(105) 40 - 50 in. lbs (4.5 - 5.6 Nm).
LUBRICATION / SEALANTS
Apply Key-Lube to all “O” rings, “U” Cups & mating parts.
�
Apply Loctite 271 to threads.
Apply Dri-Loc 204 to threads.
�
Figure 5
�
6661AX-X-C
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TROUBLE SHOOTING
Product discharged from exhaust outlet.
Low output volume, erratic flow, or no flow.
Check for diaphragm rupture.
Check air supply.
Check tightness of diaphragm nut.
Check for plugged outlet hose.
Check for kinked (restrictive) outlet material hose.
Check for kinked (restrictive) or collapsed inlet
material hose.
Air bubbles in product discharge.
Check connections of suction plumbing.
Check “O”rings between intake manifold and fluid caps.
Check tightness of diaphragm nut.
Check 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 non-collapsing type, capable of
pulling a high vacuum.
Check all joints on the inlet manifolds and suction con-
nections. These must be air tight.
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.
DIMENSIONAL DATA
Dimensions shown are for reference only,they are shown in inches and millimeters (mm).
(6661XJ-X, 6661XK-X, 6661XS-X) 1 - 11-1/2 N.P.T.F. - 1
Figure 6
(6661XL-X, 6661XN-X, 6661XT-X) 1 - 11 BS Rp
K
E
Outlet
N Bolt Circle
K
A
Outlet
B
F
F
D
Inlet
Inlet
M
G
H
L
J
C
May be tapped for 1” pipe.
(6661X3-X, 6661X4-X, 6661XP-X) 1” A.N.S.I. Flange
(6661XF-X, 6661XG-X, 6661XR-X) 1” A.N.S.I. / DIN Flange
1/4 - 18 N.P.T. Air Inlet
DIMENSIONS
6661XJ-X
6661XL-X
6661XS-X
6661XT-X
6661XK-X
6661XN-X
6661XF-X
6661XR-X
6661X3-X
6661XP-X
6661X4-X
6661XG-X
A
12-21/32” (321 mm) 12-15/32” (316 mm) 13-5/32” (334 mm) 13-1/32” (331 mm) 13-5/32” (334 mm) 13-1/32 (331 mm)
13-25/32” (349 mm) 13-19/32” (345 mm) 13-25/32” (350 mm) 13-19/32” (345 mm) 13-25/32” (350 mm) 13-19/32” (345 mm)
10-1/16” (255 mm) 9-15/16” (252 mm) 10-1/16” (255 mm) 9-15/16” (252 mm) 10-1/16” (255 mm) 9-15/16” (252 mm)
B
C
D
E
2-3/8” (60 mm)
8-1/16” (204 mm) 7-15/16” (201 mm) 8-1/16” (204 mm) 7-15/16” (201 mm) 8-1/16” (204 mm) 7-15/16” (201 mm)
16” (406 mm) 15-25/32” (400 mm) 14-13/16” (376 mm) 14-5/8” (371 mm) 16” (406 mm) 15-25/32” (401 mm)
5-1/32” (128 mm) 4-31/32” (126 mm) 5-1/32” (128 mm) 4-31/32” (126 mm) 5-1/32” (128 mm) 4-31/32” (126 mm)
2-11/32” (59 mm) 2-11/32” (59 mm)
2-5/16” (59 mm)
2-11/32” (59 mm)
2-5/16” (59 mm)
F
G
H
J
K
L
M
N
6-9/32” (160 mm)
7/16” (11 mm)
15/16” (23 mm)
2-9/32” (57 mm)
1/2” (13 mm)
6-7/32” (157 mm) 6-9/32” (160 mm) 6-7/32” (157 mm)
6-9/32” (160 mm) 6-7/32” (157 mm)
7/16” (11 mm)
29/32” (23 mm)
2-1/4” (56 mm)
1/2” (13 mm)
7/16” (11 mm)
2” (51 mm)
7/16” (11 mm)
1-25/32” (50 mm)
7/16” (11 mm)
1-1/32” (26 mm)
7/16” (11 mm)
1” (25 mm)
1/2” (13 mm)
1/2” (13 mm)
1/2” (13 mm)
3.140” (80 mm)
1/2” (13 mm)
3.097” (79 mm)
3.140” (80 mm)
3.097” (79 mm)
PN 97999-ꢀ0
6661AX-X-C
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