Graco G-Chem Series Parts list manual

3A6349A
EN
Instructions-Parts
G-Chem Beam
Pump
Lever-driven pump for injecting chemicals at well sites. For professional use only.
See page 3 for model information, including maximum working pressure.
Important Safety Instructions
Read all warnings and instructions in this manual
before using the equipment. Save all instructions.

23A6349A
Contents
Models and Approvals . . . . . . . . . . . . . . . . . . . . . . 3
G-Chem Beam Pumps . . . . . . . . . . . . . . . . . . . . 3
Fluid Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Configuration Number Matrix . . . . . . . . . . . . . . . . . 4
G-Chem Beam Pump Assembly Configuration
Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Fluid Module Configuration Code . . . . . . . . . . . . 5
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Flush Before Using Equipment . . . . . . . . . . . . . . 8
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . 8
Pumpjack Connections . . . . . . . . . . . . . . . . . . . 10
Fluid Connections . . . . . . . . . . . . . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pressure Relief Procedure . . . . . . . . . . . . . . . . 12
Flush the Equipment . . . . . . . . . . . . . . . . . . . . . 12
Prime the Pump . . . . . . . . . . . . . . . . . . . . . . . . 13
Calibrate Chemical Dosage . . . . . . . . . . . . . . . 13
Adjust the Pump Stroke . . . . . . . . . . . . . . . . . . 14
Preventive Maintenance Schedule . . . . . . . . . . 17
Tighten Threaded Connections . . . . . . . . . . . . . 17
Tighten Packings . . . . . . . . . . . . . . . . . . . . . . . 17
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
G-Chem Beam Pump . . . . . . . . . . . . . . . . . . . . 21
Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . 23
G-Chem Beam Pump . . . . . . . . . . . . . . . . . . . . 23
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
G-Chem Beam Pump Dimensions . . . . . . . . . . 24
Technical Specifications . . . . . . . . . . . . . . . . . . . . 25
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 26

Models and Approvals
3A6349A 3
Models and Approvals
G-Chem Beam Pumps
Fluid Modules
Models Configuration Number Plunger
Size Number of Pumps Seal Material Maximum Working Pressure psi (MPa, bar)
A23000 CI-NAO-2XF-000-0 1/4 in. Simplex FKM 2500 (17.2, 172)
A23001 CI-NAO-3XF-000-0 3/8 in. Simplex FKM 1500 (10.3, 103)
A23002 CI-NAO-5XF-000-0 1/2 in. Simplex FKM 800 (5.5, 55)
A23003 CI-NAO-2XG-000-0 1/4 in. Simplex HNBR 2500 (17.2, 172)
A23004 CI-NAO-3XG-000-0 3/8 in. Simplex HNBR 1500 (10.3, 103)
A23005 CI-NAO-5XG-000-0 1/2 in. Simplex HNBR 800 (5.5, 55)
A23006 CI-NAO-2XH-000-0 1/4 in. Simplex TFE/P 2500 (17.2, 172)
A23007 CI-NAO-3XH-000-0 3/8 in. Simplex TFE/P 1500 (10.3, 103)
A23008 CI-NAO-5XH-000-0 1/2 in. Simplex TFE/P 800 (5.5, 55)
A23009 CI-NAO-2XJ-000-0 1/4 in. Simplex PTFE 500 (3.4, 34)
Plunger Size Maximum Working Pressure psi (MPa, bar)
1/4 in. 2500 (17.2, 172)
3/8 in. 1500 (10.3, 103)
1/2 in. 800 (5.5, 55)

Configuration Number Matrix
43A6349A
Configuration Number Matrix
Check the identification plate (ID) for the 12-digit Configuration Number of your pump. Use the following matrix to
define the components of your pump.
G-Chem Beam Pump Assembly Configuration Code
Sample Configuration Number: CI-12E-2XF-000-0
FIG. 1 Example of the G-Chem Assembly Identification Plate
A23000 CI-2XF-000-0 ########
A 2500(17) # ####
Graco Inc., P.O. Box 1441
Mpls, MN 55440 USA
Model Number Configuration Number
Date Code
Side 1 Side 2
CI 2 X F 0 0 0 0
Chemical
Injection Plunger Size Plunger Coating Seal Material Plunger Size Plunger Coating Seal Material Qualifier
Side 1 Side 2
Plunger Size Plunger Coating Seal Material Plunger Size Plunger Coating Seal Material Qualifier
2 1/4” X Chromex F FKM 0 None 0 None 0 None 0 None
33/8” GHNBR
51/2” HTFE/P
J PTFE w/FFKM
checks

Configuration Number Matrix
3A6349A 5
Fluid Module Configuration Code
Sample Configuration Number: CI-25-XF-0
FIG. 2 Example of the Fluid Module Identification Plate
A30970 ########
A 2500(17) # ####
Graco Inc., P.O. Box 1441
Mpls, MN 55440 USA
CI-25-XF-0
Model Number Configuration Number
Date Code
CI 25 X F 0
Chemical Injection Plunger Size Plunger Coating Seal Material Qualifier
Plunger Size Plunger Coating Seal Material Qualifier
25 1/4” X Chromex F FKM 0 None
38 3/8” G HNBR
50 1/2” HTFE/P
J PTFE w/FFKM
checks

Warnings
63A6349A
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion 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.
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area be aware that flammable fumes can ignite or
explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Ground all equipment in the work area.
• Keep work area free of debris, including rags and spilled or open containers of solvent.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Use only grounded hoses.
•Stopoperationimmediatelyifstaticsparkingoccurs oryoufeel ashock.Do not use equipmentuntil
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure and disconnect all power sources.

Warnings
3A6349A 7
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheet (SDS) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-
ponent. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Specifica-
tions in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete infor-
mation about your material, request Safety Data Sheets (SDSs) from distributor or retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Checkequipmentregularly.Repairorreplacewornordamagedpartsimmediatelywith genuineman-
ufacturer’s replacement parts only.
• Do not alter or modifyequipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.

Installation
83A6349A
Installation
Grounding
Pump: grounded through fluid lines.
Fluid lines: use only electrically conductive lines.
Fluid supply container: follow local code.
Accessories
Install the following required accessories in the order
shown in a typical installation (see FIG. 3 on page 9)
using adapters as necessary.
•Fluid filter (Y-Strainer) (included in K): with a 60
mesh (250 micron) stainless steel element to filter
particles from the fluid before in reaches the pump.
•Fluid shutoff valves (L): shuts off fluid flow.
•Pressure relief valve (D): overload protection.
Flush Before Using Equipment
The equipment was tested with lightweight oil, which is
left in the fluid passages to protect parts. To avoid con-
taminating your fluid with oil, flush the equipment with a
compatible solvent before using the equipment. See
Flush the Equipment, page 12.
Typical Installation
FIG. 3 is an example of an installation with a G-Chem
chemical injection beam pump. Your installation may dif-
fer from what is shown here. (See Accessories on
page 8.) The G-Chem beam pump (A) and the swivel
block (B) are the only components in FIG. 3 supplied by
Graco. All other components are supplied by customer.
Key:
A G-Chem Beam Pump
B Swivel Block and Eye Bolt
CTank
D Pressure Relief Valve (Required)
E Inlet Line
F Outlet Line
G Pressure Relief Line
H Inlet Port
JOutletPort
K Manifold Assembly (includes y-strainer and fluid shutoff
valve (L))
L Fluid Shutoff Valve (inlet & outlet) (Required)
M Pumpjack Base (I-Beam)
N Cable/Rod/Pipe
P Walking Beam
R Beam Clamp
To avoid injury due to unexpected moving parts,
remove power to the pumpjack and wait for the walk-
ing beam to stop moving before performing any task
on the G-Chem pump. The G-Chem pump is directly
influenced by the motion of the pumpjack’s walking
beam, and the pump is inactive only when the walking
beam is unable to move.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.

Installation
3A6349A 9
FIG. 3 Typical G-Chem beam pump installation with pumpjack
A
B
F
E
G
C
DH
J
N
K
LM
R
P

Installation
10 3A6349A
Pumpjack Connections
1. Remove power to the pumpjack and wait for the
pumpjack to stop moving.
2. Attach a cable (N) to the walking beam (P) using a
beam clamp (R) or other connection method (both
user-supplied).
• Place the beam clamp (R) on the walking beam
(P) where the vertical travel is, at most, 21 in.
(53.34 cm), which is the maximum travel of the
G-Chem pump’s lever arm.
3. Position the G-Chem pump (A) on the pumpjack
base (M) so that the walking beam (P) provides a
straight upward pull as it rises.
• The lever arm (122) must be able to travel 6 in.
below the base of the G-Chem pump (A) to
achieve maximum flow.
4. Securely clamp or bolt the G-Chem pump (A) to the
pumpjack base (M) using the pump’s supplied
base (112).
• The G-Chem pump (A) is shipped with the sup-
plied base (112) already attached.
5. Connect the lever arm (122) to the walking beam
(P) by routing the end of the cable (N) through the
eye bolt (8) on the supplied swivel block (B).
6. Ensure there is no slack in the cable (R) when the
G-Chem pump (A) is maximum stroke (setting “1”
on the lever arm (122) and “Full” on the stroke
adjust). Refer to Adjust the Pump Stroke on
page 14.
FIG. 4 Lever arm range of travel
21 in.
6 in.
122
A
8

Installation
3A6349A 11
Fluid Connections
1. With the pumpjack off, remove and discard the caps
on the check valves (215 and 216).
Key:
2. Connect a 1/4 npt(f) fluid line from the fluid source to
the inlet check valve (215).
3. Install a pressure relief valve (D) on the outlet side
of the pump. See FIG. 3 on page 9.
4. Set the pressure relief valve at or below the maxi-
mum working pressure of the pump.
5. Connect a 1/4 npt(f) fluid line from the outlet check
valve (J) to the injection point.
FIG. 5 G-Chem Beam Pump Components
7 Swivel Block
8EyeBolt
101 Drive Housing
112 Mounting Panel
122 Lever Arm
201 Fluid Cylinder
210 Bleed Valve
211 Bleed Needle
215 Inlet Check Valve
216 Outlet Check Valve
201
215
210, 211
216
122
112
101
7
8
In the event of a fluid line blockage, to reduce the risk
of skin injection and damage to the pump, ensure the
pressure relief valve is set at or below the maximum
working pressure of the pump.

Operation
12 3A6349A
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
NOTE: Always discharge fluid into an approved con-
tainer or location.
1. Remove power to the pumpjack and wait for the
pumpjack to stop moving.
2. Shut off the inlet (E) and outlet (F) lines using shut-
off valves (L). See FIG. 3 on page 9.
3. Slowly loosen the fitting connected to the outlet
check valve (216) to relieve downstream fluid pres-
sure. See FIG. 3 on page 8.
4. Open the bleed needle (211) on the end of the
pump cylinder (201) to relieve internal pump pres-
sure.
5. Disconnect and cap the inlet (E) and outlet (F) fluid
lines.
Flush the Equipment
• Check fittings for leaks and tighten as necessary.
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment’s wetted parts.
1. Follow the Pressure Relief Procedure.
2. Disconnect lever arm (122) from the pumpjack.
3. Connect the inlet check valve (215) to the supply
source of the flushing fluid. See FIG. 3 on page 8.
4. Connect the outlet check valve (216) to a waste res-
ervoir.
5. Operate the lever arm (122) by hand until the dis-
pensed fluid is predominantly flushing fluid.
6. Follow the Pressure Relief Procedure.
7. Reconnect the lever arm (122) to the pumpjack.
Refer to Pumpjack Connections, page 10.
To avoid injury due to unexpected moving parts,
remove power to the pumpjack and wait for the walk-
ing beam to stop moving before performing any task
on the G-Chem pump. The G-Chem pump is directly
influenced by the motion of the pumpjack’s walking
beam, and the pump is inactive only when the walking
beam is unable to move.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection and splashing
fluid, follow the Pressure Relief Procedure when
you stop dispensing and before cleaning, checking, or
servicing the equipment.
To avoid fire andexplosion, always ground equipment
and waste container. To avoid static sparking and
injury from splashing, always flush at the lowest pos-
sible pressure.

Operation
3A6349A 13
Prime the Pump
1. Remove power to the pumpjack and wait for the
pumpjack to stop moving.
2. Disconnect lever arm (122) from the pumpjack.
3. Verify all connections and fluid lines are tight.
4. Verify only the inlet valve (215) is open.
5. Place a chemical compatible bucket under the bleed
valve (210).
6. In order to prime the pump, turn the bleed needle
(211) counterclockwise.
7. Operate the lever arm (122) by hand to prime the
pump.
8. The pump is primed when discharge from the bleed
valve (210) has transitioned from air, to bubbly liquid
chemical, to pure liquid chemical.
9. Turn the bleed needle (211) clockwise until tight and
verify that fluid has stopped draining from the port.
10. Reconnect the lever arm (122) to the pumpjack.
Refer to Pumpjack Connections, page 10.
Calibrate Chemical Dosage
1. With the pumpjack turned off, set the stroke adjust-
ment of the pump to an estimated setting for the
desired flow rate. Refer to Adjust the Pump
Stroke, page 14, and Baseline Chemical Dosage
Settings, page 16.
2. Follow the instructions provided with your calibration
gauge.
3. Adjust the stroke adjustment accordingly after the
test is performed. Increasing the stroke adjustment
of the pump will increase the pump flow rate.
4. If a slower flow is desired, slow the pumping rate of
the pumpjack, or adjust the orientation of the lever
arm by removing the retaining clip (123) at the base
of the lever arm (122) and rotating the handle to a
different position on the octagonal shaft. This will
lengthen or shorten the lever arm stroke.
5. Repeat the instructions provided with your calibra-
tion gauge to verify changes.
6. Repeat steps 3 - 5, as necessary, until the desired
flow rate is achieved.
NOTICE
To avoid potential damage to equipment, verify that all
system valves are open before priming the pump.

Operation
14 3A6349A
Adjust the Pump Stroke
The stroke of the G-Chem pump can be adjusted by a
combination of a pin in the pump and the lever arm.
Stroke Adjustment with Pin Settings
The pump has three defined stroke adjustment posi-
tions.
1. Follow the Pressure Relief Procedure on page 12.
2. Disconnect the G-Chem pump (A) from the pump-
jack by removing the swivel block (B) from the lever
arm (122).
3. Expose the drive shaft by loosening the fasteners
(128) and removing the guard (127). The fasteners
are captive and will remain with the guard.
4. Push the split ring (121) left or right to expose the
dowel pin (120) in one of the stroke holes.
5. Push out the pin (120) using a screwdriver or punch.
6. Align the desired stroke hole (1/2, 3/4, or Full) with
hole in the fluid plunger (209). Use a screwdriver to
push in the pin (120).
7. Push the split ring (121) into place to cover the
pin (120).
8. Replace the guard (127) and tighten the fasteners
(128).
9. Reconnect the G-Chem pump (A) to the pumpjack
by reattaching the swivel block (B) to the level
arm (122).
FIG. 6 Expose the drive shaft
128
127
FIG. 7 Stroke adjustment - pin positions
3/4 Full
1/2
209
121
Stroke holes

Operation
3A6349A 15
Stroke Adjustment with Lever Arm Settings
The handle has two defined stroke adjustment positions.
1. Follow the Pressure Relief Procedure on page 12.
2. Disconnect the G-Chem pump (A) from the pump-
jack by removing the swivel block (B) from the lever
arm (122).
3. Remove the retaining clip (123) from the lever
arm (122) using a flat-blade screwdriver.
4. Remove the lever arm (122) from the shaft (105).
5. Reorient the lever arm (122) so the arrow on the
lever arm lines up with either “1” or “2” on the
shaft (105).
6. Reinstall the lever arm (122) in the desired orienta-
tion.
7. Reinstall the retaining clip (123) onto the shaft using
your fingers or a pair of pliers.
8. Reconnect the G-Chem pump (A) to the pumpjack
by reattaching the swivel block (B) to the level
arm (122).
FIG. 8 Stroke adjustment - lever arm positions
123
122
105

Operation
16 3A6349A
Baseline Chemical Dosage Settings
See Adjust the Pump Stroke, page 14, to adjust stroke settings. CPM (cycles per minute) is determined by the
pumpjack speed. To use these charts, find the desired flow rate for the plunger size and adjust the pin and lever arm
as necessary.
NOTE: Not all stroke adjustment combinations are pos-
sible.
CPM
1/4 in. Plunger 3/8 in. Plunger 1/2 in. Plunger
Pin
Setting Lever Setting
Approximate
Flow Rate
[GPD (LPD)]
Pin
Setting Lever Setting
Approximate
Flow Rate
[GPD (LPD)]
Pin
Setting Lever Setting
Approximate
Flow Rate
[GPD (LPD)]
5
3/4 20.3 (1.1) 3/4 20.7 (2.6) 3/4 21.2 (4.5)
1/2 10.5 (1.9) 1/2 11.1 (4.2) 1/2 11.8 (6.8)
Full 20.6 (2.3) Full 21.5 (5.7) Full 22.6 (9.8)
3/4 10.7 (2.6) 3/4 11.6 (6.1) 3/4 13.2 (12.1)
Full 11.2 (4.5) Full 12.8 (10.6) Full 15.0 (18.9)
10
3/4 20.5 (1.9) 3/4 21.3 (4.9) 3/4 22.3 (8.7)
1/2 11.0 (3.8) 1/2 12.2 (8.3) 1/2 13.6 (13.6)
Full 21.2 (4.5) Full 22.9 (11.0) Full 25.1 (19.3)
3/4 11.5 (5.7) 3/4 13.2 (12.1) 3/4 16.5 (24.6)
Full 12.5 (9.5) Full 15.7 (12.6) Full 110.0 (37.9)
15
3/4 20.8 (3.0) 3/4 22.0 (7.6) 3/4 23.5 (13.2)
1/2 11.4 (5.3) 1/2 13.3 (12.5) 1/2 15.4 (20.4)
Full 21.8 (6.8) Full 24.4 (16.7) Full 27.7 (29.1)
3/4 12.2 (8.3) 3/4 14.8 (18.2) 3/4 19.7 (36.7)
Full 13.7 (14.0) Full 18.5 (32.2) Full 115.0 (56.8)

Operation
3A6349A 17
Maintenance
Preventive Maintenance
Schedule
The operating conditions of your particular pump deter-
mines how often maintenance is required. Establish a
preventive maintenance schedule by recording when
and what kind of maintenance is needed, and then
determine a regular schedule for checking your pump.
Tighten Threaded Connections
Check that all threaded connections are tight at routine
intervals.
Tighten Packings
The packings included in your pump have the ability to
be adjusted to stop leaks that develop when the seals
are worn. If a leak develops in the pump’s fluid section,
tighten the packing nut clockwise by 1/16th of a turn, or
lower, until the leak is eliminated. The life of the packing
can be affected by over-tightening the packings. If the
packing nut needs to be tightened repeatedly after short
intervals, replace the packing.
Storage
If the pump is going to be stored for long periods, it is
recommended that the pump be flushed with a
light-weight oil or rust prohibiter to protect pump compo-
nents. Store the pump with protective fluid inside when-
ever possible.

Troubleshooting
18 3A6349A
Troubleshooting
1. Follow Pressure Relief Procedure, page 12,
before checking or repairing the pump. 2. Check all possible problems and causes before dis- assembling the pump.
Problem Cause Solution
Air bubbles in fluid Suction line is loose Tighten suction line
Fluid leaking Loose fittings Tighten fittings
Worn or damaged seals and/or pack-
ing Adjust or tighten seals and/or pack- ing. If leak persists, replace seals
and/or packing.
Lever arm moving, but fluid not mov-
ing Pump stalled Check pump for contamination
Air in pump Prime pump
Worn or damaged check valve seals Replace inlet and outlet check valves

Repair
3A6349A 19
Repair
Pump Repair
1. Remove power to the pumpjack and wait for the
pumpjack to stop moving.
2. Follow the Pressure Relief Procedure.
3. Disconnect lever arm (122) from the pumpjack.
4. Expose the drive shaft by loosening the fasteners
(128) and removing the guard (127). The fasteners
are captive and will remain with the guard.
5. Remove the screws (3) and slide the fluid cylinder
away from the drive housing (101).
NOTE: The plunger (209) will stay within the drive
housing (101) unless the dowel pin (120) is
removed. The dowel pin is held in place by a split
ring that can be push aside to free the pin. It is not
necessary to remove the plunger (209) unless it is
damaged and needs to be replaced.
6. Remove packing nut (207) from fluid cylinder (201).
FIG. 9 Expose the drive shaft
128
127
FIG. 10 Disconnect the fluid cylinder
FIG. 11 G-Chem Pump Repair
3
201
209 101
120
201
Packing
Stack
210
206
204
205
204
205
203
202

Repair
20 3A6349A
7. Carefully remove the packing stack (203-206) and
the spacer (202) from the fluid cylinder (201).
8. Replace the packing stack (203-206). Inspect the
spacer (202) and replace, if necessary. Lubricate
prior to reassembly.
9. Replace the packing nut (207) assembly into fluid
cylinder. Tighten until hand tight and the flange of
the packing nut (207) is below the surface of the
fluid cylinder (201).
10. Slide the fluid cylinder (201) onto the plunger (209)
and use the screws (3) to attach the fluid cylinder
(201) to the drive housing (101).
NOTE: Install the plunger (209) first if it was
removed, and secure it with the dowel pin (120) and
split ring (121). Refer to Stroke Adjustment with
Pin Settings, on page 14, for specific placement of
the pin (120) and ring (121).
11. Replace the guard (127) and tighten the fasteners
(128).