Graco Fast-Flo A Series Operation manual

2575
307427ZAF
EN
Instructions-Parts List
Fast-Flo®Pump
Air-operated piston transfer pump for low viscosity fluids. For professional use only.
Only models that are EX certified are approved for use in European explosive atmosphere
locations (see page 4).
180 psi (1.2 MPa, 12.4 bar) Maximum Air Input Pressure
180 psi (1.2 MPa, 12.4 bar) Maximum Working Pressure
For models that are certified, see page 4.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
This symbol on the nameplate
means the product is listed by
ETL. (UL Standard No. 79,
Standard for Power-Operated
Pumps for Petroleum Produce
Dispensing Systems).
1:1 RATIO
Stubby
Pump
Bung-Mounted
Adjustable
Length Pump
Bung-Mounted
Drum Length Pump

2 307427ZAF
Contents
Pump Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pump Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pump Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Displacement Pump Service . . . . . . . . . . . . . . . . . 17
Displacement Pump Parts . . . . . . . . . . . . . . . . . . . 18
Displacement Pump Service . . . . . . . . . . . . . . . . . 23
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 38
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable. WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
• This equipment is for professional use only.
• Read all instruction manuals, tags, and labels before operating the equipment.
• Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
• Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not exceed the maximum working pressure stated on the equipment or in the Technical Data for
your equipment. Do not exceed the maximum working pressure of the lowest rated component in
your system.
• Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the
Technical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s
warnings.
• Securely mount the pump. Do not attempt to operate it while holding it.
• Do not use hoses to pull equipment.
• Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
• Graco hoses to temperatures above 82°C (180°F) or below -40°C (-40°F).
• Wear hearing protection when operating this equipment.
• Do not lift pressurized equipment.
• Comply with all applicable local, state, and national fire, electrical, and safety regulations.

307427ZAF 3
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
• Ground the equipment and the object being sprayed. Refer to Grounding the System on page 8.
• If there is any static sparking or you feel an electric shock while using this equipment, stop
spraying/dispensing immediately. Do not use the equipment until you identify and correct the
problem.
• Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being
sprayed/dispensed.
• Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.
• Electrically disconnect all equipment in the spray/dispense area.
• Extinguish all open flames or pilot lights in the spray/dispense area.
• Do not smoke in the spray/dispense area.
• Do not turn on or off any light switch in the spray/dispense area while operating or if fumes are
present.
• Do not operate a gasoline engine in the spray/dispense area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
• Know the specific hazards of the fluid you are using.
• Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
• Any additives to the air supply, such as oil or anti-freeze will be exhausted into the atmosphere.
• Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
• Keep clear of all moving parts when starting or operating the pump.
• Before servicing the equipment, follow the Pressure Relief Procedure on page 11 to prevent the
equipment from starting unexpectedly.
WARNING

Pump Models
4 307427ZAF
Pump Models
ETL LISTED PUMPS
The following pumps are ETL listed for light viscosity
paints, lacquers, varnishes, thinners, solvents when
installed in accordance with NFPA (National Fire
Protection Association) Standards No. 30, Flammable
and Combustible Liquids Code, and No. 33 Spray
Finishing Using Flammable Materials. The ETL listed
pumps have been evaluated using ASTM Reference
Fuels A, C, H, I, and IRM No. 3 Oil and that any fluid
used in these pumps should be reviewed against these
fluids to determine suitability. The carbon steel pumps
are for non-corrosive fluids, and the stainless steel
pumps are for corrosives.
Stubby Pumps
Bung-Mounted Drum Length Pumps
‡ Model 686445 includes a spout, part no. 206265
* This model is certified.
**This model is certified.
NON-LISTED PUMPS
These pumps are for non-corrosive light viscosity fluids
such as anti-freeze, windshield washer solvent, ATF,
motor oil, and hydraulic oil.
Stubby Pumps
Bung-Mounted Drum Length Pumps
‡ Model 226951 has a suction tube that can be
extended 457 mm (18 in.). Non-extended pump length
is 724 mm (28.5 in.). Fully extended pump length is
1180 mm (46.4 in).
NON-LISTED PUMPS
These pumps are for general fluid transfer applications.
Stubby Pumps
Bung-Mounted Drum Length Pumps
Model No. Description Parts Pages
**226943
Series B Carbon Steel, Leather
Packings 14, 18
*226944
Series B Carbon Steel,
Polyethylene Packings 14, 19
*226945
Series B Stainless Steel,
Polyethylene Packings 15, 28
Model No. Description Parts Pages
**226940
Series B Carbon Steel, Leather
Packings 12, 18
**226941
Series B Carbon Steel,
Polyethylene Packings 12, 19
**226942
Series B Stainless Steel,
Polyethylene Packings 13, 27
686445
Series A‡Carbon Steel,
Polyethylene Packings 12, 19
II 2 G
Ex h IIB T6 Gb
II 1/2 G T6
ITS03ATEX11227
Model No. Description Parts Pages
226948
Series B Carbon Steel, Rubber
Packings 14, 24
226952
Series B Stainless Steel, Rubber
Packings 15, 33
Model No. Description Parts Pages
226947
Series B Carbon Steel, Rubber
Packings 12, 24
226951‡
Series B Carbon Steel, Rubber
Packings 16, 25
226953
Series B Stainless Steel, Rubber
Packings 13, 32
Model No. Description Parts Pages
*237130
Series B Carbon Steel, Leather
Packings 14, 20
*237131
Series B Carbon Steel, PTFE
Packings 14, 22
*237132
Series B Stainless Steel, PTFE
Packings 15, 30
Model No. Description Parts Pages
**237133
Series A Carbon Steel, Leather
Packings 12, 18
**237134
Series A Carbon Steel, PTFE
Packings 12, 21
**237129
Series A Stainless Steel, PTFE
Packings 13, 29

Installation
307427ZAF 5
Installation
General Information
• The Typical Installation shown in FIG. 2 is only a
guide for selecting and installing system
components. Contact your Graco distributor for
assistance in planning a system to suit your needs.
• Always use Genuine Graco Parts and Accessories.
• Reference numbers and letters in parentheses refer
to the callouts in the figures and the parts lists on
pages 12–33.
• For ETL listed pumps. All pipe joints are to be made
tight with ETL listed gasoline—resistant pipe
compound.
Grounding the System
To reduce the risk of static sparking, ground the pump
and all other equipment used or located in the pumping
area. Check your local electrical code for detailed
grounding instructions for your area and type of
equipment. Ground all of this equipment.
1. ETL—Listed Pumps: Use a ground wire, connector,
and clamp. See FIG. 1. Loosen screw (X). Insert one
exposed end of a 12 ga (1.5 mm2) minimum ground
wire (Y) through the eye of the ground terminal
connector (W) and tighten screw (X) securely.
Connect the other end of the wire to a true earth
ground. Order Part No. 237569 Ground Wire and
Clamp.
2. Non ETL-Listed Pumps: See FIG. 1. Remove the
ground screw (Z). Fasten the ground connector (W)
onto the pump with the ground screw (Z) and tighten
securely. Loosen screw (X). Insert one exposed end
of a 12 ga (1.5 mm2) minimum ground wire (Y)
through the eye of the ground terminal connector
(W) and tighten screw (X) securely. Connect the
other end of the wire to a true earth ground. Order
Part No. 222011 Ground Connector/Wire and
Clamp.
3. Air and fluid hoses: use only electrically conductive
hoses.
4. Air compressor: according to manufacturer’s
recommendations.
5. Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
6. Fluid supply container: according to local code.
7. Object being sprayed: according to local code.
8. All solvent pails used when flushing, according to
local code. Use only metal pails, which are
conductive. Do not place the pail on a
non-conductive surface, such as paper or
cardboard, which interrupts the grounding
continuity.
WARNING
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also read the section
FIRE AND EXPLOSION HAZARD
on page 3.
FIG. 1

Installation
6 307427ZAF
Installation
Mounting the Pump
Always rigidly mount the pump to suit the type of
installation planned. Graco mounting accessories are
shown in the Accessories section. With 200 liter (55
gallon) drum length pumps, screw the bung adapter
(B) tightly into the bung hole of the drum and adjust to
hold the pump 13 mm (0.5 in.) off the bottom of the
drum. Loosen the vent plug (A) to prevent formation of
a vacuum in the drum. Stubby pumps may be mounted
on a wall or on the side of a drum with a clamp. Drum
pumps can also be mounted to the side of a drum.
NOTE: Refer to Dimensions on page 36 for pump
dimensions, and air inlet and fluid outlet sizes.
Key:
A Vent Plug
B Bung Adapter
C Air Line Lubricator
D Bleed-type Master Air Valve
E Air Line Filter
F Grounded Air Hose
G Fluid Drain Valve
H Fluid Outlet
J Pin Fitting
K Air Control Valve
(All Models except 226951)
L Air Line Coupler
M Grounded Fluid Hose
CC Air Regulator Kit
(Model 226951 only)
FIG. 2
Model 226951 only

Installation
307427ZAF 7
Installation
System Accessories
Refer to FIG. 2 and the Accessories section.
NOTE: To ensure maximum pump performance, be
sure that all accessories used are properly sized to meet
your system’s requirements.
Most models are supplied with a needle-type air control
valve (K) at the pump air inlet. Model 226951 is
equipped with an air regulator kit (CC) instead (see FIG.
3). All models are supplied with an air line quick
disconnect coupler (L) to connect the air line to thepump
and accessories.
For automatic air motor lubrication, install an air line
lubricator (C) downstream from the air regulator (if
supplied) and all other accessories. Install a bleed-type
master air valve (D) close to the pump. Next, install the
air regulator (CC), if supplied. Install an air line filter (E)
upstream from all other accessories, to remove harmful
dirt and moisture from the compressed air supply.
Using a suitable adapter, install the male disconnect pin
fitting (J) in the air filter inlet. Install the air line quick
disconnect coupler (L) on the air hose (F), but do not
connect it to the pin fitting yet.
Connect an electrically conductive fluid hose (M) to the
3/4 npt(f) fluid outlet.
Model 226951 Only
Using moderate force, extend the pump suction tube,
insert the pump into the drum or tank bung hole, and
screw the bung adapter (B) tightly into the bung hole.
Lift the pump about 13 mm (0.5 in.) and tighten the bung
adapter (B) screw to hold the pump. Loosen the vent
plug (A). Refer to FIG. 2.
All Other Models
Refer to FIG. 2 and to the mounting accessories shown
on page 34 for pump mounting methods.
WARNING
A bleed-type master air valve (D) and a fluid drain
valve (G) are required in your system, to help reduce
the risk of serious injury, including splashing fluid in
the eyes or on the skin, and injury from moving parts if
you are adjusting or repairing the pump.
The bleed-type master air valve (D) relieves air
trapped between this valve and the pump after the
pump is shut off. Trapped air can cause the pump to
cycle unexpectedly and result in serious injury,
including amputation. Locate the valve close to the
pump.
The fluid drain valve (G) helps relieve pressure in the
displacement pump, hose, and dispensing valve when
shutting off the pump. Actuating the dispensing valve
to relieve pressure may not be sufficient, especially if
there is a clog in the hose or the dispensing valve.
CAUTION
To prevent damaging the o-ring seals inside the suc-
tion tube, do not use excessive force when extending
the suction tube.
Model 226951 Shown
FIG. 3

Operation
8 307427ZAF
Operation
Pressure Relief Procedure
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (required in
your system).
3. Hold a metal part of the dispensing valve firmly to
the side of a grounded metal pail, and trigger the
valve to relieve pressure.
4. Open the fluid drain valve (required in your system)
to relieve all fluid pressure, having a container ready
to catch the drainage.
5. Leave the drain valve open until you are ready to
dispense again.
If you suspect that the nozzle or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
hose end coupling and relieve pressure gradually, then
loosen completely. Now clear the nozzle or hose.
Flush the Pump Before Using
The pump was tested in lightweight oil, which was left
in to protect pump parts. To prevent contamination of
the fluid you are pumping, flush the pump with a
compatible solvent before using it.
To flush the pump, connect a short hose to the pump
outlet, insert the pump intake into a pail of compatible
solvent, direct the hose into a pail, and start the pump
as explained at right.
Cycle the pump slowly for at least 5 minutes, then stop
and disconnect the air hose. Push up on the ball of the
intake valve (N) to drain the lower part of the pump.
See FIG. 4. Turn the pump over to drain the upper part
of the pump.
Starting and Adjusting the Pump
With the air valve (K) or regulator (CC) closed, turn on
the air supply and connect the air line coupler (L). See
FIG. 3 or FIG. 5. Make sure all dispensing valves are
open.
Slowly open the air valve (K) or regulator (CC) until the
pump cycles 5 to 20 cycles per minute. The pump itself
only takes a few strokes to prime. In a large system,
however, the pump may have to be cycled for
several minutes to fill all the lines. Once the entire
system is primed, use the air valve or regulator to
control pump speed and cycle rate; always use the
lowest pressure necessary to get the desired results.
When used for transfer and supply operations with no
dispensing valve, the pump will run whenever air is
supplied.
Pump Shutdown
1. Disconnect the air line coupler (L).
2. Relieve the pressure.
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying
accidentally. To reduce the risk of an injury from
accidental spray from the gun, splashing fluid, or
moving parts, follow the
whenever you:Pressure Relief Procedure
• are instructed to relieve the pressure,
• stop spraying,
• check or service any of the system equipment,
• or install or clean the spray nozzle.
FIG. 4
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.

Maintenance
307427ZAF 9
Maintenance
Fill the wet-cup (P) 1/2 full of Graco Throat Seal Liquid
(TSL) or compatible solvent and keep it 1/2 full to keep
fluid from drying on the displacement rod and damaging
pump throat packings. See FIG. 5.
Lubricate the throat packings frequently when you are
pumping a non-lubricating fluid, or are shutting down
for more than a few days. Some pumps have a grease
fitting (DD) for this purpose. See FIG. 5.
The accessory air line lubricator (C) provides automatic
air motor lubrication. To manually lubricate the motor,
disconnect the air line at the air motor inlet, put
about 15 drops of lightweight oil in the inlet, reconnect
the air line and turn on the air to blow oil into the motor.
Never allow the pump to run dry of fluid being pumped.
A dry pump will quickly accelerate to a high speed,
possibly damaging itself. If your pump accelerates
quickly, or is running too fast, stop it immediately and
check the fluid supply. If the supply container is empty
and air has been pumped into the lines, prime the
pump and lines with fluid, or flush and leave filled with
compatible solvent. Be sure to eliminate all air from the
fluid system.
Periodically, check the tightness of the packing nut (P).
Relieve the pressure, then tighten enough to prevent
leakage; no tighter. See FIG. 5. If the leakage can not
be stopped, change the packings to prevent exposure
to the fluid being pumped.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
WARNING
Do not attempt to adjust the packing nut with the
pump operating.
FIG. 5

Troubleshooting
10 307427ZAF
Troubleshooting
1. Relieve the pressure.
2. Check all other possible remedies before
disassembling the pump.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
PROBLEM CAUSE SOLUTION
The pump fails to operate. Dirty or worn air motor. Clean, service; see the separate
motor manual 307456.
Inadequate air supply or restricted
lines. Clean lines or increase the air supply (see Technical Data).
Closed or clogged air valves. Open or clear the valves.
Clogged fluid hose or valve. Clear the hose or valves.
Worn or damaged valves or seals. Service the valves or seals.
The pump operates, but the output
is low on both strokes. Clogged fluid hose or valve. Clear the hose or valves.
Exhausted fluid supply. Refill the fluid supply and reprime the
pump.
Worn or damaged valves or seals. Service the valve or seals.
The pump operates, but the output
is low on the downstroke. Held open or worn intake valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valve or seals.
The pump operates, but the output
is low on the upstroke. Held open or worn piston valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valve or seals.
Erratic or accelerated operation. Exhausted fluid supply. Refill the fluid supply and reprime the
pump.
Broken air motor compression
spring. Replace the spring.

Pump Service
307427ZAF 11
Pump Service
Disconnecting the Air Motor
1. Flush the pump.
2. Relieve the pressure. Remove the pump from its
mounting.
3. See FIG. 6. Unscrew the tie rod locknuts (103).
4. Unscrew and remove the screw (105) and barrel
(104).
5. Raise the air motor (115) away from the
displacement pump (114). Unscrew the
displacement rod (15) from the air motor connecting
rod (S).
6. To order pump parts, refer to the parts lists on
pages 12–16. Refer to pages 17–33 for
displacement pump service and parts information.
Refer to manual 307456 for air motor service and
parts information.
Reconnecting the Air Motor
1. When reconnecting the air motor, use lithium base
grease on the threads of the displacement rod (15).
Make sure the o-ring (14) is in place on the rod.
2. Insert the muffler (T) into the air motor connecting
rod (S) as shown in FIG. 6.
3. Tighten the displacement rod (15) into the air motor
connecting rod hand tight, and install the barrel and
screw set (104 and 105).
4. Apply thread sealant to the threads of the tie rods
(106). To ensure proper alignment, first thread the
tie rod locknuts (106) loosely onto the tie rods, then
torque evenly to 15 N•m (8 ft-lb).
NOTE: Removing the muffler (T) will increase both
pump flow rate and exhaust noise.
5. Reconnect the groundwire if it was disconnected
during service.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Grease the threads.
Apply thread sealant.
Torque evenly to 15 N•m (8 ft-lb).
FIG. 6
1
2
3

Pump Parts
12 307427ZAF
Pump Parts
Bung Mount Drum-Length Pumps, Carbon Steel Models
Model 226940, Series B, leather packed
Model 226941, Series B, polyethylene packed
Model 226947, Series B, rubber packed
Model 237133, Series A, leather packed
Model 237134, Series A, PTFE packed
Model 686445, Series A, polyethylene packed, with
spout
Keep these spare parts on hand to reduce down
time.
‡ Displacement pump only available as piece parts,
not available assembled
Ref.
No. Part. No. Description Qty.
103 104541 NUT, lock; M8; w/nylon insert 3
10415B249 PIN, barrel 1
10515B250 SCREW 1
106 177171 TIE ROD 3
107 190165 FITTING, air line; for Models
237133 and 237134 only 1
169969 FITTING, air line for all other
models 1
108 206264 NEEDLE VALVE ASSY
Includes items 109-112, 116,
117
1
109157628 PACKING, o-ring; nitrile rubber 1
110 165722 BODY 1
111 166531 RING, friction washer 1
112 166529 NEEDLE 1
113 190164 COUPLER, air line; for Models
237133 and 237134 only 1
114558 COUPLER, air line for all other
models 1
114 215953‡ DISPLACEMENT PUMP, for
Models 226940 and 237133;
see page 18
1
215954‡ DISPLACEMENT PUMP for
Model 226941; see page 19 1
237449 DISPLACEMENT PUMP for
Model 237134; see page 21 1
218113‡ DISPLACEMENT PUMP for
Model 226947; see page 24 1
115 223099 AIR MOTOR KIT
See instruction manual 307456 1
116 166532 NUT, packing 1
117 164698 KNOB, adjusting 1
118 206265 SPOUT; Model 686445 only
(not shown) 1
Model 226940 Shown

Pump Parts
307427ZAF 13
Pump Parts
Bung Mount Drum-Length Pumps, Stainless Steel Models
Model 226942, Series B, polyethylene packed
Model 226953, Series B, rubber packed
Model 237129, Series A, PTFE packed
Keep these spare parts on hand to reduce down
time.
‡ Displacement pump only available as piece parts,
not available assembled
Ref.
No. Part. No. Description Qty.
102 215961 MOUNTING KIT for Stainless
Steel Pumps; includes items
103-113, 116, 117
1
103 104541 NUT, lock; M8; w/nylon insert 3
10415B249 PIN, barrel 1
10515B250 SCREW 1
106 177170 TIE ROD 3
107 190165 FITTING, air line; for Model
237129 only
169969 FITTING, air line for all other
models 1
108 206264 NEEDLE VALVE ASSY
Includes items 109-112, 116,
117
1
109157628 PACKING, o-ring; nitrile rubber 1
110 165722 BODY 1
111 166531 RING, friction washer 1
112 166529 NEEDLE 1
113 190164 COUPLER, air line; for Model
237129 only 1
114558 COUPLER, air line for all other
models 1
114 215955‡ DISPLACEMENT PUMP, for
Model 226942; see page 27 1
220440‡ DISPLACEMENT PUMP for
Model 226953; see page 32 1
237253‡ DISPLACEMENT PUMP for
Model 237129; see page 29 1
115 223099 AIR MOTOR KIT
See instruction manual 307456
1
116 166532 NUT, packing 1
117 164698 KNOB, adjusting 1
Model 226953 Shown

Pump Parts
14 307427ZAF
Pump Parts
Stubby Length Pumps, Carbon Steel Models
Model 226943, Series B, leather packed
Model 226944, Series B, polyethylene packed
Model 226948, Series B, rubber packed
Model 237130, Series A, leather packed
Model 237131, Series A, PTFE packed
Keep these spare parts on hand to reduce down
time.
‡ Displacement pump only available as piece parts,
not available assembled.
Ref.
No. Part. No. Description Qty.
103 104541 NUT, lock; M8; w/nylon insert 3
10415B249 PIN, barrel 1
10515B250 SCREW 1
106 177171 TIE ROD 3
107 190165 FITTING, air line; For Models
237130 and 237121 only
169969 FITTING, air line for all other
models 1
108 206264 NEEDLE VALVE ASSY
Includes items 109-112, 116,
117
1
109157628 PACKING, o-ring; nitrile rubber 1
110 165722 BODY 1
111 166531 RING, friction washer 1
112 166529 NEEDLE 1
113 190164 COUPLER, air line; For Models
237130 and 237131 only 1
114558 COUPLER, air line for all other
models 1
114 215956‡ DISPLACEMENT PUMP, for
Model 226943; see page 18 1
215957‡ DISPLACEMENT PUMP, for
Model 226944; see page 19 1
218114‡ DISPLACEMENT PUMP, for
Model 226948; see page 24 1
237254‡ DISPLACEMENT PUMP for
Model 237130; see page 20 1
237255‡ DISPLACEMENT PUMP for
Model 237131; see page 22 1
115 223099 AIR MOTOR KIT
See instruction manual 307456 1
116 166532 NUT, packing 1
117 164698 KNOB, adjusting 1
Model 226943 Shown

Pump Parts
307427ZAF 15
Pump Parts
Stubby Length Pumps, Stainless Steel Models
Model 226945, Series B, polyethylene packed
Model 226952, Series B, rubber packed
Model 237132, Series A, PTFE packed
Keep these spare parts on hand to reduce down
time.
‡ Displacement pump only available as piece parts,
not available assembled.
Ref.
No. Part. No. Description Qty.
102 215961 MOUNTING KIT for Stainless
Steel Pumps; includes items
103-113, 116, 117
1
103 104541 NUT, lock; M8; w/nylon insert 3
10415B249 PIN, barrel 1
10515B250 SCREW 1
106 177170 TIE ROD 3
107 190165 FITTING, air line; for Model
237132 only
169969 FITTING, air line for all other
models 1
108 206264 NEEDLE VALVE ASSY
Includes items 109-112, 116,
117
1
109157628 PACKING, o-ring; nitrile rubber 1
110 165722 BODY 1
111 166531 RING, friction washer 1
112 166529 NEEDLE 1
113 190164 COUPLER, air line; for Model
237132 only 1
114558 COUPLER, air line for all other
models 1
114 215958‡ DISPLACEMENT PUMP, for
Model 226945; see page 28 1
220439‡ DISPLACEMENT PUMP for
Model 226952; see page 33 1
237256‡ DISPLACEMENT PUMP for
Model 237132; see page 30 1
115 223099 AIR MOTOR KIT
See instruction manual 307456 1
116 166532 NUT, packing 1
117 164698 KNOB, adjusting 1
Model 226945 Shown

Pump Parts
16 307427ZAF
Pump Parts
Bung Mount Adjustable Length Pump, Carbon Steel Model
Fits bung type containers from 724 mm (28.5 in.) to 1180 mm (46.4 in.) deep (maximum 456 mm [18 in.] adjustment).
Model 226951, Series B, rubber packed
Keep these spare parts on hand to reduce down
time.
‡ Displacement pump only available as piece parts,
not available assembled
Ref.
No. Part. No. Description Qty.
103 104541 NUT, lock; M8; w/nylon insert 3
10415B249 PIN, barrel 1
10515B250 SCREW 1
106 177171 TIE ROD 3
107 169969 FITTING, air line 1
113 114558 COUPLER, air line 1
114 218116‡ DISPLACEMENT PUMP, for
Model 226951; see page 28 1
115 223099 AIR MOTOR KIT See
instruction manual 307456 1
118 218316 AIR REGULATOR KIT Includes
items 107, 113, 119-123 1
119 100403 PLUG, pipe; 1/8 npt 1
120 104655 GAUGE, air pressure; 0-60 psi
(0-0.4 MPa, 0-4.2 bar); 1/8 npt
inlet
1
121 104815 REGULATOR, air; 0-60 psi
(0-0.4 MPa, 0-4.2 bar); see
308167
1
122 103656 NIPPLE, pipe; 1/8 npt 1
123 100030 BUSHING, pipe; 1/4 npt(m) x
1/8 npt(f) 1

Displacement Pump Service
307427ZAF 17
Displacement Pump Service
CARBON STEEL DISPLACEMENT PUMPS, with leather,
polyethylene, or PTFE packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
• Model 215953, page 18.
• Model 215956, page 18.
• Model 215954, page 19.
• Model 215957, page 19.
• Model 237254, page 20.
• Model 237449, page 21.
• Model 237255, page 22.
Before You Start
1. Disconnect the displacement pump from the air
motor as explained on page 11.
2. Be sure you have all the necessary repair parts on
hand to reduce downtime.
3. Repair Kits are available. For best results, use all
the new parts in the kit even if the old parts look
good. Refer to the parts drawing for your pump.
Intake Valve
1. Unscrew the intake valve housing (23) from the
cylinder (13), using a strap wrench. Disassemble
the valve and clean and inspect all parts.
NOTE: On Models 237254 and 237255, inspect the ball
(28) and seat in the housing (23) for wear or nicks.
2. Replace parts as necessary. Reassemble as shown
in the applicable parts drawing.
Piston Valve
1. Using a strap wrench, grip the cylinder (13) near the
outlet housing (6) and unscrew it from the housing.
Pull the cylinder down off the piston. Check the
inner surface of the cylinder for scoring or wear by
running a finger over the surface or holding the part
up to the light at an angle.
2. Loosen the lower nut (16) and unscrew the valve
housing (18) from the connecting rod (17). Unscrew
the piston stud (22).
3. Clean and inspect all piston parts. Replace parts as
necessary. Reassemble the piston parts as shown,
being sure that the lips of the u-cup packing (21) are
facing up. Screw the piston stud (22) into the valve
housing (18) and torque to 31 N•m (23 ft-lb).
4. When reassembling the piston to the connecting rod
(17), screw the connecting rod all the way into the
displacement rod (15). Tighten the upper nut (16)
against the displacement rod and torque to 33 N•m
(24 ft-lb). Adjust the lower nut (16) to allow 3.1 mm
(0.125 in.) free travel for the disk (19).
Throat Packings
1. Remove the cylinder (13) and piston as explained
previously. Remove the packing nut (1) and pull the
displacement rod (15) out of the top of the outlet
housing (6). Inspect the outer surface of the
displacement rod for scoring or wear by running a
finger over the surface or holding it up to the light at
an angle.
2. Remove the throat packings from the outlet housing
(6).
3. Clean and inspect the parts for wear or damage.
Lubricate the packings before reassembly. Install
the parts one at a time, in the same position as
before. The lips of the v-packings must face down
against fluid pressure.
NOTE: On displacement pumps 215953, 215956, and
237254, install the two leather v-packings (4) below the
single PTFE v-packing (3).
4. Leave the packing nut (1) loose until the
displacement rod (15) has been installed.
5. Tighten the packing nut just enough to prevent
leaking. Overtightening can damage the packings.
6. Reconnect the displacement pump to the air motor
as explained on page 11.
CAUTION
Insert the displacement rod from the top of the outlet
housing to prevent shearing of the packings.

Displacement Pump Parts
18 307427ZAF
Displacement Pump Parts
Model 215953 Displacement Pump, Series D
200 Liter (55 Gallon) Size, Carbon Steel, Leather Packed
Model 215956 Displacement Pump, Series C
Stubby Size, Carbon Steel, Leather Packed
* These parts are included in Repair Kit 213012, which
may be purchased separately.
Ref.
No. Part No. Description Qty.
1 177152 NUT, packing 1
2* 178543 GLAND, female; stainless steel 1
3* 172487 V-PACKING; PTFE 1
4* 172384 V-PACKING; leather 2
5* 172385 GLAND, male; stainless steel 1
6 178542 HOUSING, outlet 1
7 101281 FITTING, grease 1
8 104537 O-RING; PTFE 2
9 214583 BUNG ADAPTER ASSY
Includes items 10 and 12 (used on
Model 215953 only)
1
10 172405 BUSHING; nylon 1
12 222308 ADAPTER, bung; carbon steel 1
13 172416 CYLINDER (Model 215953) 1
177165 CYLINDER (Model 215956) 1
14 177156 O-RING; fluoroelastomer 1
15 217189 ROD, displacement 1
16 105775 NUT, hex; M14 x 1.5 2
17 177150 ROD, connecting (Model 215953) 1
177160 ROD, connecting (Model 215956) 1
18 177168 HOUSING, valve, piston 1
19 177155 VALVE, piston 1
20 172393 WASHER; stainless steel 1
21* 172392 CUP, piston; leather 1
22 177151 PISTON, pump 1
23 217102 VALVE, intake 1
Torque to 31 N•m (23 ft-lb).
Torque to 33 N•m (24 ft-lb).
Lips of v-packings must face down.
Lips of packing must face up.
Used on Model 215953 only.
Model 215953 Shown
1
2
3
4
5

Displacement Pump Parts
307427ZAF 19
Displacement Pump Parts
Model 215954 Displacement Pump, Series D
200 Liter (55 Gallon) Size, Carbon Steel, Polyethylene Packed
Model 215957 Displacement Pump, Series C
Stubby Size, Carbon Steel, Polyethylene Packed
* These parts are included in Repair Kit 215964, which
may be purchased separately.
Ref.
No. Part No. Description Qty.
1 177152 NUT, packing 1
2* 178543 GLAND, female; stainless steel 1
3* 177164 V-PACKING; polyethylene 1
5* 172385 GLAND, male; stainless steel 1
6 178542 HOUSING, outlet 1
7 101281 FITTING, grease 1
8 104537 O-RING; PTFE 2
9 214583 BUNG ADAPTER ASSY
Includes items 10 and 12 (used on
Model 215954 only)
1
10 172405 BUSHING; nylon 1
12 222308 ADAPTER, bung; carbon steel 1
13 172416 CYLINDER (Model 215954) 1
177165 CYLINDER (Model 215957) 1
14 177156 O-RING; fluoroelastomer 1
15 217189 ROD, displacement 1
16 105775 NUT, hex; M14 x 1.5 2
17 177150 ROD, connecting (Model 215954) 1
177160 ROD, connecting (Model 215957) 1
18 177168 HOUSING, valve, piston 1
19 177155 VALVE, piston 1
20 172393 WASHER; stainless steel 1
21* 177159 CUP, piston; polyethylene 1
22 177151 PISTON, pump 1
23 217102 VALVE, intake 1
Torque to 31 N•m (23 ft-lb).
Torque to 33 N•m (24 ft-lb).
Lips of v-packings must face down.
Lips of packing must face up.
Used on Model 215954 only.
Model 215954 Shown
1
2
3
4
5

Displacement Pump Parts
20 307427ZAF
Displacement Pump Parts
Model 237254 Displacement Pump, Series A
Stubby Size, Carbon Steel, Leather Packed
* These parts are included in Repair Kit 213012, which
may be purchased separately.
Ref.
No. Part No. Description Qty.
1 177152 NUT, packing 1
2* 178543 GLAND, female; stainless steel 1
3* 172487 V-PACKING; PTFE 1
4* 172384 V-PACKING; leather 2
5* 172385 GLAND, male; stainless steel 1
6 178542 HOUSING, outlet 1
7 101281 FITTING, grease 1
8 104537 O-RING; PTFE 1
13 190063 CYLINDER 1
14 177156 O-RING; fluoroelastomer 1
15 217189 ROD, displacement 1
16 105775 NUT, hex; M14 x 1.5 2
17 177160 ROD, connecting 1
18 177168 HOUSING, valve, piston 1
19 177155 VALVE, piston 1
20 172393 WASHER; stainless steel 1
21* 172392 CUP, piston; leather 1
22 177151 PISTON, pump 1
23 237493 VALVE, intake 1
26 172399 PIN, ball stop 1
27 177230 GUIDE, ball 1
28 104586 BALL, intake; 32 mm dia. 1
Torque to 31 N•m (23 ft-lb).
Torque to 33 N•m (24 ft-lb).
Lips of v-packings must face down.
Lips of packing must face up.
1
2
3
4