Graco Fast-Flo Datasheet

03783
03761
Stubby Pump
Bung-Mounted
Drum Length Pump
Bung-Mounted
Adjustable Length Pump
03761
INSTRUCTIONS–PARTS LIST 307–427
Rev. V
Supersedes U
1:1 RA TIO
Fast-Flo Pump
12.4 bar (180 psi) Maximum Air Input Pressure
12.4 bar (180 psi) Maximum Fluid Working Pressure
Refer to page 4 for a list of pump models.
Table of Contents
Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Models 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Service 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Parts 12–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Service 17–32. . . . . . . . . . . . . . . . .
Displacement Pump Parts 18–34. . . . . . . . . . . . . . . . . . .
Accessories 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 40. . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1980, GRACO INC.
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
INSTRUCTIONS

 
Symbols
Warning Symbol
WARNING
his symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury .
D This equipment is for professional use only .
D
Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are not sure, call Graco T echnical Assis -
tance at 1–800–543–0339.
D Do not alter or modify this equipment.
D Check equipment daily . Repair or replace worn or damaged parts immediately .
D
Do not exceed the maximum working pressure of the lowest rated component in your system.
This equipment has a 12.4 bar (180 psi) maximum working pressure at 12.4 bar (180 psi)
maximum incoming air pressure.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer ’ s warn -
ings.
D
Do not use hoses to pull equipment.
D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not ex -
pose Graco hoses to temperatures above 82 _ C (180 _ F) or below –40 _ C (–40 _F).
D
Securely mount the pump. Do not attempt to operate it while holding it.
D Do not lift pressurized equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
WARNING
INSTRUCTIONS

 
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 .
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. Refer to Grounding the System on page 5.
 If there is any static sparking or you feel an electric shock while using this equipment, stop
pumping 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.
 Keep the work area free of debris, including solvent, rags, and gasoline.
 Electrically disconnect all equipment in the work area.
 Extinguish all open flames or pilot lights in the work area.
 Do not smoke in the work area.
 Do not turn on or of f any light switch in the work area while operating or if fumes are present.
 Do not operate a gasoline engine in the work area.
MOVING P ARTS 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 8 to prevent the
equipment from starting accidentally .
WARNING
WARNING

*
 
Pump Models
UL LISTED PUMPS
The following pumps are UL listed for light viscosity
paints, lacquers, varnishes, thinners, solvents when
installed in accordance with NFP A (National Fire Pro -
tection Association) Standards No. 30, Flammable and
Combustible Liquids Code, and No. 33 Spray Finishing
Using Flammable Materials. The carbon steel pumps
are for non-corrosive fluids, and the stainless steel
pumps are for corrosives.
Stubby Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
226–943
Series B
Carbon Steel,
Leather Packings
215–956
Series C
14, 18
226–944
Series B
*
Carbon Steel,
Polyethylene
Packings
215–957
Series C
14, 19
226–945
Series B
*
Stainless Steel,
Polyethylene
Packings
215–958
Series B
15, 28
Bung-Mounted Drum Length Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
226–940
Series B
Carbon Steel,
Leather Packings
215–953
Series D
12, 18
226–941
Series B
*
Carbon Steel,
Polyethylene
Packings
215–954
Series D
12, 19
226–942
Series B
*
Stainless Steel,
Polyethylene
Packings
215–955
Series B
13, 27
226–954
Series A
Stainless Steel,
Leather Packings
236–991
Series A
13, 29
NON-LISTED PUMPS
These pumps are for non-corrosive light viscosity fluids
such as anti-freeze, windshield washer solvent, A TF,
motor oil, and hydraulic oil.
Stubby Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
226–948
Series B
Carbon Steel,
Rubber Packings
218–114
Series A
14, 24
226–952
Series B
Stainless Steel,
Rubber Packings
220–439
Series A
15, 34
Bung-Mounted Drum Length Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
226–947
Series B
Carbon Steel,
Rubber Packings
218–113
Series A
12, 24
226–951
Series B
Carbon Steel,
Rubber Packings
218–116
Series A
16, 25
226–953
Series B
Stainless Steel,
Rubber Packings
220–440
Series A
13, 33
 Model 226–951 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 1 180 mm (46.4 in.).
NON-LISTED PUMPS
These pumps are for general fluid transfer applica -
tions.
Stubby Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
237–130
Series A
Carbon Steel,
Leather Packings
237–254
Series A
14, 20
237–131
Series A
Carbon Steel,
Packings
237–255
Series A
14, 22
237–132
Series A
Stainless Steel,
Packings
237–256
Series A
15, 31
Bung-Mounted Drum Length Pumps
Model
No. Description
Displacement
Pump No.
Parts
Pages
237–133
Series A
Carbon Steel,
Leather Packings
215–953
Series D
12, 18
237–134
Series A
Carbon Steel,
Packings
237–449
Series A
12, 21
237–129
Series A
Stainless Steel,
Packings
237–253
Series A
13, 30
PTFE
PTFE
PTFE
PTFE

 
Installation
General Information
1. The T ypical Installation shown in Fig. 2 is only a
guide for selecting and installing system compo -
nents. Contact your Graco distributor or Graco
T echnical Assistance (1–800–543–0339) for assis -
tance in planning a system to suit your needs.
2. Always use Genuine Graco Parts and Accesso -
ries.
3.
Reference numbers and letters in parentheses re -
fer to the callouts in the figures and the parts lists
on pages 12–34.
Grounding the System
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also, read the sec -
tion
FIRE AND EXPLOSION HAZARD,
on page 3.
WARNING
T o 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 equip -
ment. Ground all of this equipment.
1. Pump : connect a ground wire and clamp as shown
in Fig. 1. Loosen the grounding lug locknut (W)
and washer (X). Insert one end of a 12 ga (1.5
mm ) minimum ground wire (Y) into the slot in the
lug (Z) and tighten the locknut securely . Connect
the clamp end of the ground wire to a true earth
ground. Order Part No. 222–01 1 Ground Wire and
Clamp.
03653
Fig. 1
Y
WXZ
2. Air and fluid hoses : use only electrically conductive
hoses.
3.
Air compressor : according to manufacturer ’ s rec -
ommendations.
4.
Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
5.
Fluid supply container: according to local code.
6. Object being sprayed: according to local code.
7. All solvent pails used when flushing , according to
local code. Use only metal pails, which are con -
ductive. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which inter -
rupts the grounding continuity .

 
Installation
03762
Fig. 2
KEY
A Vent
Plug
B Bung Adapter
C Air Line Lubricator
D Bleed-type Master Air V alve
E
Air Line Filter
F Grounded Air Hose
G Fluid Drain V alve
H
Fluid Outlet
J Pin Fitting
K Air Control V alve
(All Models except 226–951)
L Air Line Coupler
M Grounded Fluid Hose
CC Air Regulator Kit
(Model 226–951 only)
E
A
DF
K
JL
H
G
MC
B
13 mm (0.5”)
Model 226–951 only
C
DCC
EJ L
Mounting the Pump
Always rigidly mount the pump to suit the type of in -
stallation 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.) of f 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 38 for pump
dimensions, and air inlet and fluid outlet sizes.
If low level cut-off valve 210–865 is being used, install
a drum length pump (except Model 226–951) in the
container with the valve 210–865 resting on the con -
tainer bottom. This accessory valve will not fit pumps
with a telescoping suction tube, such as Model
226–951.
CAUTION
If low level cut-of f valve 210–865 is used, install it
with a strap wrench to avoid damaging the valve.
Do not use the legs of the valve to tighten it into
the pump.

 
Installation
System Accessories
Refer to Fig. 2 and the Accessories section.
NOTE: T o 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 con -
trol valve (K) at the pump air inlet. Model 226–951 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 the
pump and accessories.
A bleed-type master air valve (D) and a fluid drain
valve (G) are required in your system, to help re -
duce 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 of f. T rapped 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 of f the pump. Actuating the
dispensing valve to relieve pressure may not be
suf ficient, especially if there is a clog in the hose or
the dispensing valve.
WARNING
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 harm -
ful 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 226–951 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.
CAUTION
T o prevent damaging the o-ring seals inside the
suction tube, do not use excessive force when ex -
tending the suction tube.
All Other Models
Refer to Fig. 2 and to the mounting accessories shown
on page 36 for pump mounting methods.
03763
Fig. 3
CC
JL
B
Model
226–951
Shown

 
Operation
Pressure Relief Procedure
PRESSURIZED EQUIPMENT HAZARD
The equipment stays pressurized until pressure is
manually relieved. To reduce the risk of serious
injury from pressurized fluid, accidental spray from
the gun or splashing fluid, follow this procedure
whenever you:
 Are instructed to relieve pressure,
 Have an air supply interruption,
 Stop pumping,
 Check, clean or service any system equipment,
 Install or clean fluid nozzles.
WARNING
1. Shut of f 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 sys -
tem) to relieve all fluid pressure, having a contain -
er 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. T o prevent contamination of
the fluid you are pumping, flush the pump with a com
-
patible solvent before using it.
T o 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. T urn the pump over to drain the upper part
of the pump.
03765
Fig. 4
N
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
Figs. 3 or 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 it -
self only takes a few strokes to prime. In a large sys -
tem, however , the pump may have to be cycled for
several minutes to fill all the lines. Once the entire sys -
tem 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
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
1. Disconnect the air line coupler (L).
2. Relieve the pressure.

 
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 damag -
ing 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 automat -
ic air motor lubrication. T o manually lubricate the mo -
tor
, 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.
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Do not attempt to adjust the packing nut with the
pump operating.
WARNING
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.
03764
Fig. 5
P
H
DD
K
J
L

10 307-427
Troubleshooting
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure.
2. Check all other possible remedies before disas -
sembling the pump.
PROBLEM CAUSE SOLUTION
The pump fails to operate. Dirty or worn air motor . Clean, service; see the separate motor
manual 307–456.
Inadequate air supply or restricted
lines.
Clean lines or increase the air supply
(see T
echnical Data).
Closed or clogged air valves. Open or clear the valves.
Clogged fluid hose or valve. Clear the hose or valves.
W orn 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 valves or seals.
The pump operates, but the output
is
low on the downstroke.
Held open or worn intake valve. Clear or service the valve.
W orn or damaged valves or seals. Service the valves or seals.
The pump operates, but the output
is
low on the upstroke.
Held open or worn piston valve. Clear or service the valve.
W orn or damaged valves or seals. Service the valves 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.

307-427 11
Pump Service
Disconnecting the Air Motor
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
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. Remove the clip pin (105) and headed pin (104).
5. Raise the air motor (1 15) away from the displace -
ment pump (1 14). Unscrew the displacement rod
(15) from the air motor connecting rod (S).
6. T o order pump parts, refer to the parts lists on
pages 12–16. Refer to pages 17–34 for displace -
ment pump service and parts information. Refer to
manual 307–456 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 muf fler (T) into the air motor connecting
rod (S) as shown in Fig. 6.
3. T ighten the displacement rod (15) into the air mo -
tor connecting rod hand tight, and install the pins
(104 and 105).
4. Apply thread sealant to the threads of the tie rods
(106). T o 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 muf fler (T) will increase both
pump flow rate and exhaust noise.
5. Reconnect the groundwire if it was disconnected
during service.
03766
Fig. 6
1
3
2
115
103
105
104
106
114
14
S
T
15
Grease the threads.
Apply thread sealant.
T orque evenly to
15 N.m (8 ft–lb).
3
2
1

03771
115
103
106
114
105
113
107
104
108
(Includes items
109–1 12, 116, 117;
see detail below .)
110
111
109
112
116
117
Model 226–940 Shown
12 307-427
Pump Parts
Bung Mount Drum-Length Pumps,
Carbon Steel Models
Model 226–940, Series B, leather packed
Model 226–941, Series B, polyethylene packed
Model 226–947, Series B, rubber packed
Model 237–133, Series A, leather packed
Model 237–134, Series A, packed
Ref.
No.
Part No. Description Qty.
103 104–541 NUT
, lock; M8; w/nylon insert 3
104 178–923
PIN, headed, straight 1
105180–166
PIN, clip 1
106 177–171
TIE ROD 3
107 190–165
FITTING, air line; for Models
237–133 and 237–134 only 1
169–969
FITTING, air line
for all other models 1
108 206–264
NEEDLE V AL VE ASSY
Includes items 109–1 12, 116, 1 17 1
109157–628 . P
ACKING, o-ring; nitrile rubber 1
110 165–722 . BODY 1
111 166–531 .
RING, friction washer 1
112 166–529 . NEEDLE 1
113 190–164
COUPLER, air line; for Models
237–133 and 237–134 only 1
208–536
COUPLER, air line
for all other models 1
114 215–953
DISPLACEMENT PUMP , for
Models 226–940 and 237–133;
see page 18 1
215–954
DISPLACEMENT PUMP
for Model 226–941; see page 19 1
237–449
DISPLACEMENT PUMP
for Model 237–134; see page 21 1
218–113
DISPLACEMENT PUMP
for Model 226–947; see page 24 1
115 223–099
AIR MOT OR KIT
See instruction manual 307–456 1
116 166–532 NUT
, packing 1
117 164–698
KNOB, adjusting 1

Keep these spare parts on hand to reduce down
time.
PTFE

03772
115
103
106
114
105
113
107
104
108 (Includes items
109–1 12, 116, 117;
see detail below .)
110
111
109
112
116
117
Ref. No. 102 Mounting Kit
includes items 103–1 13, 1 16,
117.
Model 226–954 Shown
307-427 13
Pump Parts
Bung Mount Drum-Length Pumps,
Stainless Steel Models
Model 226–954, Series A, leather packed
Model 226–942, Series B, polyethylene packed
Model 226–953, Series B, rubber packed
Model 237–129, Series A, packed
Ref.
No.
Part No. Description Qty.
102 215–961
MOUNTING KIT
for Stainless Steel Pumps;
includes items 103–1 13, 1 16,117 1
103 104–541 . NUT
, lock; M8; w/nylon insert 3
104 178–923 .
PIN, headed, straight 1
105180–166 .
PIN, clip 1
106 177–170 .
TIE ROD 3
107 190–165
FITTING, air line
for Model 237–129 only 1
169–969 .
FITTING, air line
for all other models 1
108 206–264 .
NEEDLE V AL VE ASSY
Includes items 109–1 12,
1 16, 1 17 1
109157–628 . . P
ACKING, o-ring; nitrile rubber 1
110 165–722 . . BODY 1
111 166–531 . .
RING, friction washer 1
112 166–529 . . NEEDLE 1
113 190–164
COUPLER, air line;
For Model 237–129 only 1
208–536 .
COUPLER, air line
for all other models 1
114 215–955
DISPLACEMENT PUMP
For Model 226–942; see page 27 1
220–440
DISPLACEMENT PUMP
For Model 226–953; see page 33 1
236–991
DISPLACEMENT PUMP
For Model 226–954; see page 29 1
237–253
DISPLACEMENT PUMP
For Model 237–129; see page 30 1
115 223–099
AIR MOT OR KIT
See instruction manual 307–456 1
116 166–532 NUT
, packing 1
117 164–698
KNOB, adjusting 1

Keep these spare parts on hand to reduce down
time.
PTFE

03777
115
103
106
114
105
113
107
104
108 (Includes items
109–1 12, 116, 117;
see detail below .)
110
111
109
112
116
117
Model 226–943 Shown
14 307-427
Pump Parts
Stubby Length Pumps,
Carbon Steel Models
Model 226–943, Series B, leather packed
Model 226–944, Series B, polyethylene packed
Model 226–948, Series B, rubber packed
Model 237–130, Series A, leather packed
Model 237–131, Series A, packed
Ref.
No.
Part No. Description Qty.
103 104–541 NUT
, lock; M8; w/nylon insert 3
104 178–923
PIN, headed, straight 1
105180–166
PIN, clip 1
106 177–171
TIE ROD 3
107 190–165
FITTING, air line;
For Models 237–130 and
237–131 only 1
169–969
FITTING, air line
for all other models 1
108 206–264
NEEDLE V AL VE ASSY
Includes items 109–1 12, 116, 1 17 1
109157–628 . P
ACKING, o-ring; nitrile rubber 1
110 165–722 . BODY 1
111 166–531 .
RING, friction washer 1
112 166–529 . NEEDLE 1
113 190–164
COUPLER, air line;
For Models 237–130 and
237–131 only 1
208–536
COUPLER, air line
for all other models 1
114 215–956
DISPLACEMENT PUMP
For Model 226–943; see page 18 1
215–957
DISPLACEMENT PUMP
For Model 226–944; see page 19 1
218–114
DISPLACEMENT PUMP
For Model 226–948; see page 24 1
237–254
DISPLACEMENT PUMP
For Model 237–130; see page 20 1
237–255
DISPLACEMENT PUMP
For Model 237–131; see page 22 1
115 223–099
AIR MOT OR KIT
See instruction manual 307–456 1
116 166–532 NUT
, packing 1
117 164–698
KNOB, adjusting 1

Keep these spare parts on hand to reduce down
time.
PTFE

03778
115
103
106
114
105
113
107
104
108 (Includes items
109–1 12, 116, 117;
see detail below .)
110
111
109
112
116
117
Ref. No. 102 Mounting Kit
includes items 103–1 13, 1 16,
117.
Model 226–945 Shown
307-427 15
Pump Parts
Stubby Length Pumps,
Stainless Steel Models
Model 226–945, Series B, polyethylene packed
Model 226–952, Series B, rubber packed
Model 237–132, Series A, packed
Ref.
No.
Part No. Description Qty.
102 215–961
MOUNTING KIT
for Stainless Steel Pumps;
includes items 103–1 13,
1 16, 1 17 1
103 104–541 . NUT
, lock; M8; w/nylon insert 3
104 178–923 .
PIN, headed, straight 1
105180–166 .
PIN, clip 1
106 177–170 .
TIE ROD 3
107 190–165
FITTING, air line
for Model 237–132 only 1
169–969 .
FITTING, air line
for all other models 1
108 206–264 .
NEEDLE V AL VE ASSY
Includes items 109–1 12,
1
16, 1 17 1
109157–628 . . P
ACKING, o-ring; nitrile rubber 1
110 165–722 . . BODY 1
111 166–531 . .
RING, friction washer 1
112 166–529 . . NEEDLE 1
113 190–164
COUPLER, air line;
For Model 237–132 only 1
208–536 .
COUPLER, air line
for all other models 1
114 215–958
DISPLACEMENT PUMP
For Model 226–945; see page 28 1
220–439
DISPLACEMENT PUMP
For Model 226–952; see page 34 1
237–256
DISPLACEMENT PUMP
For Model 237–132; see page 31 1
115 223–099
AIR MOT OR KIT
See instruction manual 307–456 1
116 166–532 NUT
, packing 1
117 164–698
KNOB, adjusting 1

Keep these spare parts on hand to reduce down
time.
PTFE

03784
03783
115
103
106
114
105
113
107
104
1
18 (Includes items
107, 113, 119–123;
see detail below .)
119
122
121
120
123
16 307-427
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 226–951, Series B, rubber packed
Ref.
No.
Part No. Description Qty.
103 104–541 NUT
, lock; M8; w/nylon insert 3
104 178–923
PIN, headed, straight 1
105180–166
PIN, clip 1
106 177–171
TIE ROD 3
107 169–969
FITTING, air line 1
113 208–536
COUPLER, air line 1
114 218–116
DISPLACEMENT PUMP
for Model 226–951; see page 25 1
115 223–099
AIR MOT OR KIT
See instruction manual 307–456 1
118 218–316
AIR REGULA T OR KIT
Includes items 107, 1 13,
119–123 1
119 100–403
PLUG, pipe; 1/8 npt 1
120 104–655
GAUGE, air pressure; 0–60 psi
(0–4.2 bar); 1/8 npt inlet 1
121 104–815 REGULAT
OR, air; 0–60 psi
(0–4.2 bar); see 308–167 1
122 103–656
NIPPLE, pipe; 1/8 npt 1
123 100–030
BUSHING, pipe;
1/4 npt(m) x 1/8 npt(f) 1

Keep these spare parts on hand to reduce down
time.

307-427 17
Displacement Pump Service
CARBON STEEL DISPLACEMENT PUMPS,
with leather, polyethylene, or
r packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
D Model 215–953 page 18.
D Model 215–956 page 18.
D Model 215–954 page 19.
D Model 215–957 page 19.
D Model 237–254 page 20.
D Model 237–449 page 21.
D Model 237–255 page 22.
Before Y ou Start
1. Disconnect the displacement pump from the air
motor as explained on page 1 1.
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 V alve
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 237–254 and 237–255, 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 V alve
1. Using a strap wrench, grip the cylinder (13) near
the outlet housing (6) and unscrew it from the
housing. Pull the cylinder down of f 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). Un -
screw 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 pack -
ing (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). T ighten 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 out -
let 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 hous -
ing (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 215–953, 215–956,
and 237–254, install the two leather v-packings (4) be -
low the single r v-packing (3).
4. Leave the packing nut (1) loose until the displace -
ment rod (15) has been installed.
CAUTION
Insert the displacement rod from the top of the out -
let housing to prevent shearing of the packings.
5. T ighten 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 1 1.
PTFE
PTFE

18 307-427
Displacement Pump Parts
Model 215–953 Displacement Pump, Series D
200 Liter (55 Gallon) Size, Carbon Steel, Leather Packed
Model 215–956 Displacement Pump, Series C
Stubby Size, Carbon Steel, Leather Packed
Ref.
No. Part
No. Description Qty.
1 177–152 NUT
, packing 1
2* 178–543
GLAND, female; stainless steel 1
3* 172–487 V-P
ACKING; 1
4* 172–384 V-P
ACKING; leather 2
5* 172–385
GLAND, male; stainless steel 1
6 178–542
HOUSING, outlet 1
7 101–281
FITTING, grease 1
8 104–537
O-RING; 2
9 214–583
BUNG ADAPTER ASSY
Includes items 10, 1 1, and 12
(used on Model 215–953 only) 1
10 172–405 .
BUSHING; nylon 1
11 104–542 . SCREW
, hex hd; M8 x 1.25 1
12 210–834 .
ADAPTER, bung; carbon steel 1
13 172–416
CYLINDER (Model 215–953) 1
177–165
CYLINDER (Model 215–956) 1
14 177–156
O-RING; V iton1
15 217–189
ROD, displacement 1
16 105–775 NUT
, hex; M14 x 1.5 2
17 177–150
ROD, connecting
(Model 215–953) 1
177–160
ROD, connecting
(Model 215–956) 1
18 177–168
HOUSING, valve, piston 1
19 177–155 VAL
VE, piston 1
20 172–393 W
ASHER; stainless steel 1
21* 172–392 CUP
, piston; leather 1
22 177–151 PIST
ON, pump 1
23 217–102 VAL
VE, intake 1
* These parts are included in Repair Kit 213–012,
which may be purchased separately
.
03773
1
3
4
2
Torque
to 31 N.m (23 ft–lb).
6
1
*5
8
10
11
12
13
23
8
20
19
18
17
15
14
Lips of v-packings must face down.
7
22
16
*2
4*
3*
*21
T orque to 33 N.m (24 ft–lb).
Lips of packing must face up.
1
4
3
3
2
Model 215–953 Shown
5Used
on Model 215–953 only .
5
5
5
PTFE
PTFE

307-427 19
Displacement Pump Parts
Model 215–954 Displacement Pump, Series D
200 Liter (55 Gallon) Size, Carbon Steel, Polyethylene Packed
Model 215–957 Displacement Pump, Series C
Stubby Size, Carbon Steel, Polyethylene Packed
Ref.
No. Part
No. Description Qty.
1 177–152 NUT
, packing 1
2* 178–543
GLAND, female; stainless steel 1
3* 177–164 V-P
ACKING; polyethylene 3
5* 172–385
GLAND, male; stainless steel 1
6 178–542
HOUSING, outlet 1
7 101–281
FITTING, grease 1
8 104–537
O-RING; 2
9 214–583
BUNG ADAPTER ASSY
Includes items 10, 1 1, and 12
(used on Model 215–954 only) 1
10 172–405 .
BUSHING; nylon 1
11 104–542 . SCREW
, hex hd; M8 x 1.25 1
12 210–834 .
ADAPTER, bung; carbon steel 1
13 172–416
CYLINDER (Model 215–954) 1
177–165
CYLINDER (Model 215–957) 1
14 177–156
O-RING; V iton1
15 217–189
ROD, displacement 1
16 105–775 NUT
, hex; M14 x 1.5 2
17 177–150
ROD, connecting
(Model 215–954) 1
177–160
ROD, connecting
(Model 215–957) 1
18 177–168
HOUSING, valve, piston 1
19 177–155 VAL
VE, piston 1
20 172–393 W
ASHER; stainless steel 1
21* 177–159 CUP
, piston; polyethylene 1
22 177–151 PIST
ON, pump 1
23 217–102 VAL
VE, intake 1
* These parts are included in Repair Kit 215–964,
which may be purchased separately
.
03773
6
1
*5
8
10
11
12
13
23
8
20
19
18
17
15
14
7
22
16
*2
3*
*21
1
4
3
2
1
3
4
2
Torque
to 31 N.m (23 ft–lb).
Lips of v-packings must face down.
T orque to 33 N.m (24 ft–lb).
Lips of packing must face up.
Model 215–954 Shown
5Used
on Model 215–954 only .
5
5
5
PTFE

 
Displacement Pump Parts
Model 237–254 Displacement Pump, Series A
Stubby Size, Carbon Steel, Leather Packed
Ref.
No. Part
No. Description Qty.
1 177–152 NUT
, packing 1
2* 178–543
GLAND, female; stainless steel 1
3* 172–487 V-P
ACKING; 1
4* 172–384 V-P
ACKING; leather 2
5* 172–385
GLAND, male; stainless steel 1
6 178–542
HOUSING, outlet 1
7 101–281
FITTING, grease 1
8 104–537
O-RING; 1
13 190–063 CYLINDER 1
14 177–156
O-RING; V iton1
15 217–189
ROD, displacement 1
16 105–775 NUT
, hex; M14 x 1.5 2
17 177–160
ROD, connecting 1
18 177–168
HOUSING, valve, piston 1
19 177–155 VAL
VE, piston 1
20 172–393 W
ASHER; stainless steel 1
21* 172–392 CUP
, piston; leather 1
22 177–151 PIST
ON, pump 1
23 237–493 VAL
VE, intake 1
26 172–399
PIN, ball stop 1
27 177–230
GUIDE, ball 1
28 104–586
BALL, intake; 32 mm dia. 1
* These parts are included in Repair Kit 213–012,
which may be purchased separately
.
04473
1
3
4
2
Torque
to 31 N.m (23 ft–lb).
6
1
*5
8
13
23
20
19
18
17
15
14
Lips of v-packings must face down.
7
22
16
*2
4*
3*
*21
T orque to 33 N.m (24 ft–lb).
Lips of packing must face up.
1
4
3
32
27
28
26
PTFE
PTFE