PMC GHO Guide

Before installing the GHO Transfer Pump, carefully read all the technical and safety
documentation included in this manual. Pay special attention to the information in order to
know and understand the operation and the conditions of use of the GHO Transfer Pump.
All of the information is aimed at improving user safety and avoiding possible breakdowns
from the incorrect use of the GHO Transfer Pump .
REVISION 3.0
Polyurethane Machinery Corp.
Headquarters: 1 Komo Drive, Lakewood NJ 08701
Manufacturing: 2 Komo Drive, Lakewood, NJ 08701
Phone:[phone] Fax:[phone]
http://www.polymac-usa.com
SERVICE &
PARTS MANUAL
High Output 2 : 1
Transfer Pump
GHO

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Table of Contents
WARRANTY..........................................................................................................................3
SAFETY AND HANDLING ....................................................................................................5
TECHNICAL SPECIFICATIONS...........................................................................................7
OPTIONAL EQUIPMENT......................................................................................................8
INITIAL MACHINE SET-UP ..................................................................................................9
INSTALLATION ..................................................................................................................10
OPERATION.......................................................................................................................12
DISASSEMBLY...................................................................................................................13
PART IDENTIFICATION.....................................................................................................15
TRANSFER PUMP ASSEMBLY (GHO) ..........................................................................................15
DETAIL A............................................................................................................................................................................ 16
DETAIL B............................................................................................................................................................................ 17
DETAIL C............................................................................................................................................................................18
DETAIL D............................................................................................................................................................................19
AIR MOTOR ASSEMBLY (PU-04000-01)........................................................................................20
AIR MOTOR AND PLUNGER TOP ASSEMBLY (PU-04000-18).....................................................21
AIR MOTOR TO PUMP COUPLING ASSEMBLY (PU-04000-23)...................................................22
AIR CYLINDER CAP ASSEMBLY (PU-04000-44)...........................................................................23
FOOT VALVE ASSEMBLY (PU-04000-45) .....................................................................................24
TOOL KIT (PU-04000-94) ...............................................................................................................25
MANUAL REVISIONS ........................................................................................................26

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WARRANTY
Polyurethane Machinery Corporation (hereinafter “PMC”) provides this LIMITED WARRANTY
(hereinafter “Warranty”) to the original purchaser (hereinafter “Customer”) covering this equipment
and the original PMC manufactured accessories delivered with the equipment (hereinafter “Product”)
against defects in material or workmanship of the Product (hereinafter “Defect” or “Defective”) for a
period of one (1) year from the date of first purchase as shown on the original PMC invoice
(hereinafter “Warranty Period”).
If during the Warranty Period under normal use, the Product is suspected by Customer to be
Defective in material or workmanship, it is Customer’s responsibility to contact PMC and return the
Product to PMC as directed by PMC, freight prepaid. If PMC determines that the Product is Defective
and that such Defect is covered by this Warranty, PMC will credit Customer for the reasonable freight
charges incurred by Customer in returning the Defective Product to PMC, and PMC (or its authorized
agent) will, at PMC’s option, repair or replace the Product, subject to the following:
Original Invoice: The original invoice must be kept as proof of the date of first sale and the Product
serial number. The Warranty does not cover any Product if the Original Invoice appears to have been
modified or altered, or when the serial number on the Product appears to have been altered or
defaced.
Product Maintenance: It is the Customer’s responsibility to maintain the Product properly. See your
maintenance schedule and owner’s manual for details. The Warranty does not cover an improperly
maintained Product.
Non-PMC Components and Accessories: Non-PMC manufactured components and accessories that
are used in the operation of the Product are not covered by this Warranty. Such components and
accessories shall be subject to the warranty offered to the Customer, if any, by the original
manufacturer of such component or accessory.
Other Warranty Exclusions: The Warranty does not cover any Product that PMC determines has been
damaged or fails to operate properly due to misuse, negligence, abuse, carelessness, neglect, or
accident. By way of example only, this includes:
Normal wear and tear.
Improper or unauthorized installation, repair, alteration, adjustment or modification of the
Product.
Use of heating devices, pumping equipment, dispensers, or other parts or accessories with the
Product that have not been approved or manufactured by PMC.
Failure to follow the operating instructions and recommendations provided by PMC.
Cosmetic damage.
Fire, flood, “acts of God,” or other contingencies beyond the control of PMC.

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THE WARRANTY DESCRIBED HEREIN IS THE EXCLUSIVE REMEDY FOR THE
CUSTOMER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS, IMPLIED,
STATUTORY OR OTHERWISE, AND THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER
WARRANTIES ARE HEREBY DISCLAIMED. TO THE FULLEST EXTENT PERMITTED BY
LAW, PMC SHALL NOT BE RESPONSIBLE, WHETHER BASED IN CONTRACT, TORT
(INCLUDING, WITHOUT LIMITATION, NEGLIGENCE), WARRANTY OR ANY OTHER
LEGAL OR EQUITABLE GROUNDS, FOR ANY CONSEQUENTIAL, INDIRECT,
INCIDENTAL, LOST PROFITS, SPECIAL, PUNITIVE OR EXEMPLARY DAMAGES,
WHETHER TO PERSON OR PROPERTY, ARISING FROM OR RELATING TO THE
PRODUCT, EVEN IF PMC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
LOSSES OR DAMAGES.
Non-Warranty Service by PMC: If PMC determines that the suspected Defect of the Product is not
covered by this Warranty, disposition of the Product will be made pursuant to the terms and conditions
of PMC’s written estimate on a time and materials basis.
Continuing Warranty for Products Repaired or Replaced under Warranty: Following the repair or
replacement of a Product covered by this Warranty, such Product will continue to be subject to the
original Warranty for the remainder of original Warranty Period or for three (3) months from the repair
or replacement date, whichever is longer.
No Rights Implied: Nothing in the sale, lease or rental of any Product by PMC shall be construed to
grant any right, interest or license in or under any patent, trademark, copyright, trade secret or other
proprietary right or material owned by anyone; nor does PMC encourage the infringement of same.
Exclusive Warranty: This writing is the final, complete, and exclusive expression of the Warranty
covering the Product. Any statements made by PMC, its employees or agents that differ from the
terms of this Warranty shall have no effect. It is expressly understood that Customer’s acceptance of
this Warranty, by performance or otherwise, is upon and subject solely to the terms and conditions
hereof, and any additional or different terms and conditions proposed or expressed by Customer or
anyone, whether in writing or otherwise, are null and void unless specifically agreed to in writing by an
Officer of PMC.

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SAFETY AND HANDLING
This chapter contains important information on the safety, handling and use of your GHO
series high output transfer pump.
WARNING!Presents information to alert of a situation that might cause
serious injuries if the instructions are not followed.
CAUTION! Presents information that indicates how to avoid damage to
the Proportioner or how to avoid a situation that could cause minor
injuries.
NOTE: Is relevant information of a procedure being carried out.
Careful study of this manual will enable the operator to know the characteristics of the pump
and the operating procedures. By following the instructions and recommendations contained
herein, you will reduce the potential risk of accidents in the installation, use or maintenance of
the GHO pump; you will provide a better opportunity for incident-free operation for a longer
time, greater output and the possibility of detecting and resolving problems fast and simply.
Keep this Service Manual for future consultation of useful information at all times. If you lose
this manual, ask for a new copy from your PMC Service Center, directly contact Polyurethane
Machinery Corporation or on line at our web site (www.polymac-usa.com).
Before installing the GHO pump and starting it up, carefully read all the
technical and safety documentation included in this manual. Pay
special attention to the information to know and understand the
operation and the conditions of use of the unit. All of the information is
aimed at enhancing User Safety and avoiding possible breakdowns
derived from the incorrect use of the pump.

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IMPORTANT SAFETY INFORMATION
The GHO 2:1 pump has been designed and built for the application of polyurea chemical systems,
polyurethane foam chemical systems and some two-component epoxy systems. Always use liquids
and solvents that are compatible with the unit. In the event of doubt, consult PMC technical service.
To prevent possibly injury caused by incorrect handling of
the raw materials and solvents used in the process, carefully
read the safety data sheet provided by your supplier.
Deal with the waste caused according to current regulations.
To avoid damage caused by the impact of pressurized fluids,
do not open any connection or perform maintenance work on
components subject to pressure until the pressure has been
completely eliminated.
Use suitable protection when operating, maintaining or
being present in the area where the equipment is
functioning. This includes, but is not limited to, the use of
protective goggles, gloves, shoes and safety clothing and
breathing equipment.
To prevent serious injury through crushing or amputation, do
not work with the equipment without the safety guards
installed on the moving parts. Make sure that all the safety
guards are completely reinstalled at the end of the repair or
maintenance work of the equipment.

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TECHNICAL SPECIFICATIONS
Pressure Ratio:
2.2:1
Output (Cont. duty):
5.5 gpm (20.8 liters)
Output (Int. Duty)
11 gpm (41.6 liters)
Cycles per Gallon
18.5
Cycles per liter
4.88
Stroke
4 inch (10.2 cm)
Air Pressure:
180 psi (0.12 Mpa)
Air Inlet:
¼ NPT (F)
Fluid Output:
¾ NPT (F)
Air Consumption
2.0 cfm per gallon –pumped @ 100 psi
124.67 cc/sec per liter pumped @ 689 kpa
Weight
25 lbs/11.4 kg
Figure 1
GHO-S Transfer Pump (Stubby)
GHO Transfer Pump

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OPTIONAL EQUIPMENT
Figure 2: Transfer Pump Air Hose Assembly
PU-04000-F
PU-04000-H
Figure 3: Bung Adaptor
PU-04000-33
Figure 4: Material Supply Hose
PU-6157A-A-10 ¾ x 10’ A Supply Hose (1/2 NPT)
PU-6157A-10 ¾ x 10’ B Supply Hose (3/4 NPT)
Figure 5: Swivel Unions
PU-179-5 ¾ NPT x ½ NPT (F)
PU-179-6 ¾ NPT x ¾ NPT (F)

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INITIAL MACHINE SET-UP
Figure 6: Typical Installation for Classic Hydraulic Proportioner

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INSTALLATION
On custom installations, consult Figure 1 for any dimensions
required.
1. Make sure the Gasket (part No. PU-04000-40) is in place on the
threaded end of the adaptor and screw the Bung Adaptor tightly
into the bunghole of the drum. With the second gasket in place,
insert the Transfer Pump through the adaptor and lock it in
place.
Figure 8: Installing Air
Needle Valve and Quick
Disconnect
Figure 10: Installing
Air Line
Figure 7: Installing the Transfer Pump
2. Use thread sealer on the male threads of the Air Valve and Quick
Disconnect Plug
3. Use thread sealer on the male outlet fitting (not
supplied as part of the pump assembly) and
thread the fitting into the outlet port.
Figure 9: Installing
Outlet Fitting
4. Install air lines as required. PMC recommends using a 3/8” ID or
larger air line to deliver air to the transfer pump.

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5. Connect ground wire to the Grounding Lug in accordance with National, State and Local
Electrical Codes.
Figure 11: Installation of Ground Wire
The transfer pump installation is complete.
PRECAUTION! The transfer pump incorporates a wet tube to prevent build-up of
chemical and dirt on the pump shaft, which would damage the packings as the shaft
moves through them.
The wet tube must be full when storing a transfer pump outside the
protected environment of a sealed drum without first thoroughly
flushing and cleaning the pump. When installing a transfer pump into a
partially filled drum where the liquid level is below the top of the set
tube, manually fill the tube with the proper chemical prior to inserting
the transfer pump into the drum. If a drum with a transfer pump
installed tips over, insure that the wet tube is full after righting the drum.
The transfer pump pumps both resin and isocyanate. To reduce the possibility of
inadvertently using the transfer pump with the wrong chemical, PMC recommends
color coding the transfer pumps red for isocyanate and blue for resin.
WARNING! Whenever you are using flammable materials,
always connect a ground wire to the puma air motor.
Consult the National Electric Code, State and Local
codes for additional information.

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OPERATION
Daily Startup Procedures
1. Determine that the air needle valve is closed.
Keep Clear
of this area
2. Connect the air line quick disconnect coupler to the transfer
pump.
3. Turn on the main air supply.
4. Slowly open the air needle valve until the transfer pump runs
slowing. Use the air needle valve to control the pump speed. Figure 12: Pinch Points
WARNING! Never allow the pump to run dry of pumping material. A dry
pump will quickly accelerate to a high speed and possibly cause
personal injury and/or damage to the pump. If the pump accelerates
quickly or starts running too fast, stop it immediately and inspect. Do
not attempt to operate the pump when it is not securely mounted in a
drum. Keep hands clear of the area shown in Figure 16 at all times as
personal injury may occur.
Daily Shutdown Procedures
1. Disconnect the air line coupler.
2. After the air pressure has bled off, close the air line valve.
For extended period shutdown flush, disassemble and thoroughly clean the transfer pump
before storing in a dry place.
MAINTENANCE
Introduction
WARNING! To avoid personal injury, always disconnect
the air coupler and relieve all air and hydraulic pressures
befote servicing the pump.
Before proceeding, note the following:
All threads are hand tight.
When using a repair kit to service the pump use all the parts
provided in the kit regardless of the condition of the old ones. This
will reduce the possibility of having to rebuild the pump sooner than
normal.

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DISASSEMBLY
1. Place the transfer pump in a vice
Hold in Vice
byStandoff
Figure 13: Mounting in Vice
NOTE: It might be necessary to place a strap wrench around
the lower end of the suction tube when removing the foot valve.
2. Remove the foot valve housing using a 1 5/8” open-end wrench.
NOTE: Be sure to replace the bleed air plug
when reassembling the cylinder. Failure to do so
will prevent the transfer pump from operating.
Figure 14: Foot Valve
3. Remove the air bleed from the transfer pump air cap prior to disassembly of the air
cylinder to bleed off any air pressure trapped in the cylinder.
a. Disconnect the air line to the transfer pump.
b. Open the air needle valve.
WARNING! The air cylinder contains
pressurized air, which must be completely
exhausted prior to disassembly. Failure to
do so may cause serious injury to
personnel and/or property damage.
Figure 15: Bleed Air Valve
PRECAUTION:
Do not clamp the transfer
pump tightly.

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4. Place a strap wrench around the lower end of the
air cylinder and unthread.
Use Strap
Wrench Here
5. Use a 5/16-inch diameter pin to keep the piston rod
plunger from rotating. Unthread the piston.
6. Remove the dowel pin.
7. Push the piston out through the suction tube.
Figure 16: Strap Location
NOTE: When replacing the packings, pay careful attention to the packing
orientation.
8. Inspect and replace the packings as required.
Figure 19: Remove Piston
Figure 18: Dowel Pins
9. Lubricate, install and assemble parts
in reverse order.
Figure 17: 5/16” Diameter Pins
Figure 20: Packings

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PART IDENTIFICATION
TRANSFER PUMP ASSEMBLY (GHO)
DETAIL
PAGE
A
16
B
17
C
18
D
19

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DETAIL A
TRANSFER PUMP ASSEMBLY (GHO)
ITEM
QTY
PART
NUMBER
DESCRIPTION
1
1
PU-04000-44
AIR CYLINDER CAP ASSEMBLY
(PAGE 23)
2
1
PU-04000-62
AIR CYLINDER
3
1
PU-04000-18
AIR MOTOR AND PLUNGER TOP
ASSEMBLY (PAGE 21)
4
1
PU-04000-79
DOWEL PIN
5
1
PU-04000-21
DISPLACEMENT PLUNGER
6
1
PU-04000-23
AIR MOTOR TO PUMP COUPLING
ASSEMBLY (PAGE 22)
24
1
PU-04000-61
PACKING NUT
25
1
PU-04000-64
SEAL RETAINER
26
2
PU-04000-71
FE PACKING
27
1
PU-04000-85
WIPER
28
1
PU-04000-65
SEAL EXPANDER

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DETAIL B
TRANSFER PUMP ASSEMBLY (GHO)
ITEM
QTY
PART NUMBER
DESCRIPTION
7
1
PU-04000-88
O-RING 2-137
8
1
PU-04000-68
PTFE GASKET
9
1
PU-04000-24
PUMP BODY, GHO
1
PU-04000-26-X
STUBBY PUMP BODY
10
1
PU-04000-50
LOWER COMPRESSION TUBE
11
2
PU-04000-91
O-RING 2-032
12
1
PU-04000-89
#8-32 SOFT TIP SET SCREW

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DETAIL C
TRANSFER PUMP ASSEMBLY (GHO)
ITEM
QTY
PART NUMBER
DESCRIPTION
13
1
PU-04000-59
U-CUP COLLAR
14
1
PU-04000-69
PISTON CUP
15
1
PU-04000-41
PUMP SHAFT ASSEMBLY
16
1
PU-04000-70
U-CUP
17
1
PU-04000-67
WEAR RING
18
1
PU-04000-90
3/4" SS BEARING BALL
19
1
PU-04000-53
PISTON HOUSING

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DETAIL D
TRANSFER PUMP ASSEMBLY (GHO)
ITEM
QTY
PART NUMBER
DESCRIPTION
11
2
PU-04000-91
O-RING 2-032
20
1
PU-04000-75
SUCTION TUBE
21
1
PU-04000-45
FOOT VALVE ASSEMBLY
(PAGE 24)
22
2
PU-04000-40
SQUARE GASKET
23
1
PU-04000-33
BUNG ADAPTER ASSEMBLY

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AIR MOTOR ASSEMBLY (PU-04000-01)
AIR MOTOR ASSEMBLY (PU-04000-01)
ITEM
QTY
PART NUMBER
DESCRIPTION
1
1
PU-04000-11
AIR PISTON
2
1
PU-04000-15
GASKET TOP
3
1
PU-04000-03
UPPER AIR VALVE ASSEMBLY
4
3
PU-04000-02
#10-32 X 1-5/16 SHCS
5
3
PU-04000-08
SPACER 28/32
6
1
PU-04000-13
WEAWR RING
7
1
PU-04000-04
SILICONE GASKET
8
1
PU-04000-09
WEAR RING
9
1
PU-04000-10
U-CUP
10
1
PU-04000-14
O-RING 2-018
11
3
PU-04000-16
GASKET BOTTOM