Instructions
®
50:1 Fire-Ball 300
Pump
308883S
EN
For pumping non-corrosive and non-abrasive greases and lubricants only.For
professional use only.
Model No. 239877, Series D
pail length
Model No. 239887, Series D
120 lb drum length
Model No. 239888, Series D
400 lb drum length
8400 psi (58 MPa, 580 bar) Maximum Working Pressure
140 psi (0.97 MPa, 9.7 bar) Maximum Air Input Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
This product is designed to be used only in pumping
non-corrosive and non-abrasive lubricants and
greases. Any other use can cause unsafe operating
conditions and result in component rupture, fire, or
explosion, which can cause serious injury including
fluid injection.
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Installation
Installation
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray
gun/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
Grounding
To ground the pump: remove the ground screw (Z)
and insert through the eye of the ring terminal at end of
the ground wire (Y). Fasten the ground screw back onto
the pump and tighten securely. Connect the other end of
the ground wire to a true earth ground. See Fig. To
order a ground wire clamp, order Part. No. 222011.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
Z
Fluid hoses: Use only electrically conductive hoses.
Y
Air compressor: Follow manufacturer’s recommenda-
tions.
Fluid supply container: Follow the local code.
FIG. 1
B
G
Recommended air line
configuration to reduce
A
moisture in pump
D
J
J
C
E
F
K
H
1/2 in.
FIG. 2: Typical Installation
Key:
A
B
C
D
E
Fluid dispense line
Pump ground wire (required)
Air regulator with gauge
Main air supply line
Air line filter
F
G
H
J
Air line lubricator
Pump runaway valve
Follower plate
Bleed-type master air valve (required)
Fluid drain valve
K
308883S
3
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Installation
• The ground wire (B) reduces the risk of static
sparking.
Mounting
NOTICE
Do not hand the air accessories directly on the air
inlet. The fittings are not strong enough to support the
accessories and may cause one or more to break.
Provides a bracket on which to mount the accesso-
ries.
Mount the pump securely so that it cannot move
around during operation. Failure to do so could result
in personal injury or equipment damage.
1. Plan the mounting layout for easy operator access
to the pump air controls, sufficient room to change
drums and a secure mounting platform.
NOTE: Install the air line accessories in the order shown
in Fig.
2. If using a follow plate (H), remove the drum cover.
Scoop the material to the center of the drum. Place
the plate on the material. Guide the pump foot valve
through the plate.
1. Install a pump runaway valve (G) to shut off the air
to the pump if the pump accelerates beyond the
pre-adjusted setting. A pump that runs too fast can
be seriously damaged.
3. Mount the pump to the drum cover or other suitable
mounting device.
2. Install an air line lubricator (F) for automatic air
motor lubrication.
4. For ease in changing drums, install a pump eleva-
tor.
3. Install a bleed-type master air valve (J) to relieve air
trapped between the valve and the motor.
4. Install the air regulator (C) to control pump speed
and pressure.
Air and Fluid Line Accessories
5. Install an air line filter (E) to remove harmful dirt and
contaminants from the compressed air supply.
6. Install a second bleed-type master air valve (J)
upstream from all other accessories, to isolate the
accessories for servicing.
Three accessories are required in your system: an air
shut-off valve/air bleed device, fluid drain valve, and
ground wire. These accessories help reduce the risk of
serious bodily injury, including fluid injection, splashing
in the yes or on the skin, injury from moving parts if
you are adjusting or repair the pump, and explosion
from static sparking.
• The air bleed device relieves air trapped between it
and air motor after the air supply is shut off.
Trapped air can cause the motor to cycle
unexpectedly, causing serious injury if you are
adjusting or repairing the pump. Use a bleed-type
master air valve (J). Install them near the pump air
inlet within easy reach from the pump.
• The fluid drain (K) assists in relieve fluid pressure
in the displacement pump, hoses, and dispensing
valve. Triggering the valve to relieve pressure may
not be sufficient.
4
308883S
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Operation
Operation
Pressure Relief Procedure
NOTICE
Follow the Pressure Relief Procedure whenever
you see this symbol.
The pump has a rated ratio of 50:1. However, it is
capable of reaching stall pressures equal to 60
times the air input pressure. Calculate the fluid
output pressure using the air regulator reading.
Multiply the air pressure shown on the regulator
gauge by 60. For example:
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as skin injection,
splashing fluid and moving parts, follow the Pressure
Relief Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
140 psi air x 60 = 8400 psi fluid output
0.97 MPa air x 60 = 58.2 MPa fluid output
9.7 bar air x 60 = 582 bar fluid output
Regulate air to the pump so that no air line or fluid
line component or accessory is over pressurized.
1. Close the pump air regulator and bleed-type master
air valve (required in the system).
6. Never allow the pump to run dry of the material
being pumped.
2. Hold a metal part of the dispensing valve firmly to a
grounded metal waste container and trigger the
valve to relieve the fluid pressure.
NOTICE
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 material supply. If the supply container is
empty and air has been pumped into the lines, prime
the pump and lines with material, or flush it and leave
it filled with a compatible solvent. Be sure to eliminate
all air from the material lines.
Start Up
1. If there are multiple pumps on the air line, close the
air regulators and bleed-type master air valves to all
but one pump. If there is only one pump, close its air
regulator and bleed-type master air valve.
2. Open the master air valve from the compressor.
NOTE: A pump runaway valve (G) can be installed on
the air line to automatically shut off the pump if it starts
to run too fast.
3. Open the dispensing valve into the grounded metal
waste container, making firm metal-to-metal contact
between the container and valve. Open the
bleed-type master air valve and open the pump air
regulator slowly, just until the pump is running.
When the pump is primed and all air has been
pushed out of the lines, close the dispense valve.
7. Read and follow the instructions supplied with each
components in the system.
8. To shut off the system always follow the Pressure
Relief Procedure.
4. If there is more than one pump, repeat this proce-
dure for each pump.
NOTE: When the pump is, and with sufficient air sup-
plied, the pump starts when the dispensing valve is
opened and shuts off when closed.
5. Set the air pressure to each pump at the lowest
pressure needed to get the desired results.
308883S
5
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Repair
Repair
NOTE: Torque the shovel tube (67) to the pump cylinder
(59) at 45 to 55 ft-lbs (61 to 75 N.m).
Displacement Pump Service
Torque the pump cylinder (59) to the extension tube (64)
at 45 to 55 ft-lbs (61 to 75 N.m).
Torque the shovel rod (58) to the piston (52) at 25 to 30
ft-lbs (34 to 41 N.m).
Be sure you have all necessary parts on hand before
starting. Use all parts in the repair kit for best results.
Torque the piston (52) to the extension rod (57) at 25 to
30 ft-lbs (34 to 41 N.m).
Displacement Pump Repair Kit 241623 is available.
10. If the ground wire was disconnected before servic-
ing, be sure to reconnect it before you operate the
pump.
1. Flush the pump.
2. Relieve the pressure before proceeding, page 5.
3. Disconnect the hoses, remove the pump from its
mounting, and clamp the air motor base (5) in a
vise.
NOTICE
To avoid damaging the shovel tube, do not use slots
in the tube to tighten or loosen tube.
4. Use strap wrench to screw shovel tube (67) off of
pump cylinder (59).
5. Use strap wrench to screw shovel (66) off of shovel
rod (58).
6. se strap wrench on pump cylinder (59) to screw it
out of extension tube (64). Screw tube connector
(63) out of pump cylinder. Remove bearing (61) and
seal (62).
7. Screw the shovel rod (58) out of the piston (52).
Remove the lower ball (56). Screw the piston out of
the extension rod (57). Remove the upper ball (56),
retaining washer (53), and seal (54).
8. Clean all the parts in a compatible solvent and
inspect them for wear or damage. Use all the parts
in the repair kit, and replace other parts as neces-
sary.
9. Generously lubricate all the parts with light
water-resistant grease and reassemble the pump.
6
308883S
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Repair
5
1
4
59
56
52
60
64
62
61
63
Using nut (63), torque the
pump cylinder (59) to the ex-
tension tube (64) at 45–55 ft-lb
(61–75 N m).
58
3
1
57
Torque the shovel rod (58)
to the piston (52) at 25–30
ft-lb (34–41 N m).
66
67
3
4
53
54
Torque the piston (52) to the
extension rod (57) at 25–30
ft-lb (34–41 N m).
Caution: Do not use
slots in shovel tube to
tighten or loosen tube.
FIG. 3
308883S
7
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Repair
Air Motor and Throat Service
NOTICE
To avoid damaging the cylinder wall, lift the cylinder
straight off of the piston. Never tilt the cylinder while
you are removing it.
Before starting, be sure to have all necessary parts on
hand. Repair kit 206728 is available for the motor.
9. Use a screw driver to push down on the trip rod
yoke (22), and snap the toggles down. Remove the
lockwires (31) from the adjusting nut (30) of the
transfer valves. Screw the top nuts off. Screw the
stems (1a) out of the grommets (12) and bottom
nuts. Take the valve poppets (1b) off the stems and
Two accessory tools should be ordered. Use Padded
Pliers, 207579, to grip the trip rod without damaging its
surface. Use Gauge, 171818, to ensure the proper
clearance between the poppets and seat of the transfer
valve.
10. Grip the toggle rockers (26) with a pliers. Compress
the springs (27), and swing the toggle assembly (L)
up and away from the piston lugs (M), and remove
the parts. Check to see that the valve actuator (13)
is supported by the spring clips (14), but slides eas-
1. Flush the pump.
2. Relieve the pressure, see page 5.
3. Disconnect the hoses, remove the pump from its
mounting, and clamp the air motor base (5) in a
vise.
11. Remove the trip rod yoke (22), actuator (13), and
trip rod (11). Check the exhaust valve poppets (16)
for cracks.
4. Use a strap wrench or pipe wrench on the extension
tube (64) to screw it out of the base (5). See FIG. 4.
NOTE: To remove cracked exhaust valve poppets (16),
stretch them out, and cut them with a sharp knife.
5. Pull the extension rod (57) down as far as it will go,
exposing the displacement rod (8).
12. Remove one of the air motor plates (18 or 20). Pull
the piston (2) up out of the base (5). Remove the
throat packing nut (38) and throat seal (6).
6. Use a hammer and punch to remove the roll pin (74)
from the displacement rod (8), and unscrew the
extension rod (57) out of the displacement rod.
NOTICE
In step 7, do not damage the plated surface of the trip
rod (11). A damaged trip rod could cause erratic air
motor operation. Use the special padded pliers,
207579, to grasp the rod.
7. Manually push on the displacement rod (8) to move
the air motor piston (2) up as far as it will go.
Unscrew the cylinder cap nut (29a or 29b). Pull the
nut up. Grip the trip rod (11) with padded pliers, and
8. Remove the six screws (21) that hold the cylinder
(17) to the base. Carefully pull the cylinder straight
up off the piston (2).
8
308883S
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Repair
11
17
2
5
21
38
6
74
8
57
64
FIG. 4
308883S
9
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Repair
6. Pull the exhaust valve poppets (16) into the value
actuator (13), and clip off the top part shown with
Air Motor and Throat Seals
Reassembly
7. Install the transfer valve grommets (12), and reas-
semble the valve mechanism. Before you install the
lockwires (31) in the adjusting nuts (30), use the
special gauges, 171818, to adjust the transfer valve
so there is 0.145 inches (3.7 mm) clearance
between the poppets (1b) and the seat when it is
1. Clean all the parts carefully in a compatible solvent,
and inspect for wear or damage. Use all the repair
kit parts during reassembly, and replace other parts
as needed.
2. Check the polished surfaces of the piston (2), dis-
placement rod (8), and cylinder (17) wall for
scratches or wear. A scored rod causes premature
throat seal wear and leaking.
8. Reassemble the air motor, and assemble to the dis-
placement pump. Torque the extensions tube (64)
to the base (5) at 45 to 55 ft-lbs (61 to 75 N.m).
Before you install the air motor plate, tighten the
throat packing nut (38) snugly; do not overtighten it.
3. Lubricate all parts with a light, water-resistant
grease.
4. Install the new throat seal (6), lips facing down.
Screw the packing nut (38) into the base (5).
9. Before you remount the pump, connect an air hose,
and run the pump slowly, at about 40 psi (.028 MPa,
2.8 bar), to see that it operates smoothly.
5. Slide the displacement rod (8) down through the
throat, and lower the piston (2) into the base (5). Be
sure the o-rings (9, 10, and 24) are in place. (FIG. 4)
10. Reconnect the ground wire before regular operation
of the pump.
L
2
26 27 25
11 22
11
3
1
1a
14
13
31
30
16
M
30
12
30
24
1b
12
30
1b
0.145 in.
(3.7 mm)
2
1b
2
14
Cutaway View
16
FIG. 5
10
308883S
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Troubleshooting
Troubleshooting
checking or repairing gun.
2. Check all possible problems and causes before dis-
assembling gun.
Problem
Cause
Solution
Inadequate air supply pressure or
restricted air lines
Increase air supply and/or clear
restriction
Closed or clogged valves
Open and/or clear
Clogged fluid lines, hoses, valves,
etc.
Pump fails to operate
Relieve pressure. Clear obstruction
Assess damage and service air
motor
Damaged air motor
Exhausted fluid supply
Refill and reprime or flush
Worn or damaged air motor gasket
or seal
Asses wear or damage and service
air motor
Continuous air exhaust
Erratic pump operation
Exhausted fluid supply
Worn pump seals
Refill and reprime or flush
Replace
Damaged shovel tube
Replace
replace pump piston or shovel rod
(or other damaged part)
Damaged check seat
Worn piston seal
Replace
Pump operates, but output low on
upstroke
Damaged upper check seat
Worn fluid intake seal
Damaged lower check seat
Replace pump piston
Replace
Pump operates, but output low on
downstroke
Replace shovel rod
Inadequate air supply or restricted
air line
Increase air supply and /or clear
restriction
Closed or clogged valves
Exhausted fluid supply
Open and/or clear
Pump operates, but output low on
both strokes
Refill fluid supply and reprime pump
Clogged fluid lines, hoses, valves,
etc.
Relieve pressure. Clear obstruction
Worn seals
Replace
Replace
Grease leaking from muffler plates
Worn throat seal
308883S
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Parts
Parts
29a
38
6
29b
†60
28
9*
10
59
18**
17
†56
5
52
†56
†62
31*
30*
21
22
13
23
4
25
27
†61
63
7
12*
30*
11
15
16*
†60
14
58
26
**19
**20
64
24*
66
67
1b*
1a*
2
57
33
8
53
54
74
12
308883S
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Parts
Part No./Description
Ref. Part
Description
Qty.
29a 164704 HANDLE NUT, cylinder, cap,
model 239877
29b 161435 NUT, cylinder, cap, models
239887, 239888
1
Ref. Part
Description
Qty.
1
VALVE, poppet, includes 1a and
1b
2
1
1a
1b
2
4
5
STEM, valve
POPPET, valve, urethane
1
1
1
1
1
1
1
1
1
1
1
2
1
2
2
30
31
33
38
52
53
54
56
57
NUT, adjusting
LOCKWIRE, transfer valve
4
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
15K534 PISTON, air motor
116343 SCREW, grounding1
241826 BASE
160932 GASKET, copper
192537 NUT, packing
196184 PISTON
6
7
8
†
SEAL, throat, polyurethane
196185 RETAINER, piston seal
162718 ADAPTER, 3/8 npt(m) x 1/4 npt(f)
192541 ROD, displacement
†
†
SEAL, piston, blue fluorotrel
BALL
9
O-RING, buna-N
192685 ROD, extension, model 239877
192684 ROD, extension, model 239887
192535 ROD, extension, model 239888
192540 ROD, shovel
10
11
12
13
14
15
160624 O-RING, buna-N
203965 ROD, trip
GROMMET, rubber, air intake
58
59
60
61
62
63
64
172867 ACTUATOR, valve
172866 CLIP, spring
102975 SCREW, rd hd mach, no. 6-32 x
1/4” (6.3mm)
192538 CYLINDER, pump
†
†
†
SEAL, gasket
BEARING, shovel rod
SEAL, shovel rod, polyurethane
16
17
18
19
POPPET, valve, urethane
2
1
1
192531 CONNECTOR, tube
192682 TUBE, extension, model 239877
193760 TUBE, extension, model 239887
193758 TUBE, extension, model 239888
192660 SHOVEL
160613 CYLINDER, air motor
‡
‡
PLATE, identification, with muffler
SCREW, hex head, no. 8-32 x 0.38 12
inches (10 mm) long
66
67
74
17A265 TUBE, shovel
112154 PIN, spring, straight
20
21
‡
PLATE, warning, with muffler
1
6
101578 SCREW, hex head, no. 8-32 x 0.38
inches (10 mm) long
Parts included in Kit 206728 (purchase separately).
‡ Parts included in Kit 222559 (purchase separately).
† Parts included in Kit 241623 (purchase separately).
22
23
24
25
26
27
28
158360 YOKE, rod, trip
158362 PIN, toggle
1
2
1
2
2
2
1
O-RING, nitrile rubber
160623 ARM, toggle
158364 ROCKER, toggle
167585 SPRING, helical compression
156698 O-RING, buna-N
NOTE: Two accessory tools are required for air motor
and throat services: Padded Pliers, 207579, and Gauge,
171818.
308883S
13
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Dimension Drawings
Dimension Drawings
grounding screw
grounding screw
grounding screw
3/8 npt(f)
3/8 npt(f)
air inlet
air inlet
3/8 npt(f)
air inlet
1/4 npt(f)
1/4 npt(f)
1/4 npt(f)
fluid outlet
fluid outlet
fluid outlet
17.5 in.
(445 mm)
26.7 in.
(678 mm)
33.6 in.
(853 mm)
Overall length:
31 in. (788 mm)
Overall length:
38.4 in. (975 mm)
Overall length:
45.4 in. (1153 mm)
Mounting Hole Layout
2-Hole Mounting
Pattern
4-Hole Mounting
Pattern
161023 gasket
two or four
0.265 in. (7 mm)
dia. holes on 5 in.
(127 mm) bolt circle
3 in. (76.2 mm) dia.
14
308883S
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Technical Data
Technical Data
.
®
50:1 Fire-Ball 300 Pumps
US
Metric
58 MPa, 580 bar
Maximum fluid working pressure
Air pressure operating range*
Maximum air consumption
8400 psi
30 to 140 psi
22.8 scfm at 0.25 gpm at 100
psi
0.3 to 0.97 MPa,3 to 9.7 bar
3
0.638 m /minute at 0.95 liter/min
at 0.7 MPa, 7 bar
Maximum fluid output
Maximum recommended pump speed
Cycles per gallon (liter)
76 cycles/min at 0.22 gpm
110
76 cycles/min at 0.82 liter/min
28
Sound pressure level (measured at 1 meter
from unit)
77.8 dB(A)
Sound power level (tested in accordance with
ISO 9614-2)
85.6 dB(A)
Air inlet size
Fluid outlet size
Wetted Parts
Steel, brass, aluminum, acetal, nitrile rubber, polyurethane
Approximate weight
22 lb
10 kg
308883S
15
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Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs
will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.
Graco Information
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: 612-623-6928 or Toll Free: 1-800-533-9655, Fax: 612-378-3590.
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 308883
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 1999, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Revised November 2014
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