Page 1
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual
near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and
the receipt in a safe and dry place for future reference.
Visit our website at: http://www.harborfreight.com
REV 14i
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 1997 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Email our technical support at: productsupport@harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Page 2
Table of Contents
Safety ......................................................... 2
Specifications ............................................. 3
Assembly .................................................... 5
Operation .................................................... 8
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Maintenance ............................................... 9
Parts List and Assembly Diagram.............. 11
Warranty .................................................... 12
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
Specific Safety Rules
1. Keep hands away from arbor plates
and press pin during use.
2. Do not move workpiece while compressed.
3. Release load before service or maintenance.
4. Keep area under arbor plates clear. If arbor
plates rest on obstruction (i.e. bolt, debris,
etc.), it creates an uneven press, causing
excess stress and possible breakage.
5. Avoid off-center loads. Do not operate if
workpiece tilts or binds during compression.
6. STOP and release compression if you suspect
imminent structural failure. If safe, inspect
thoroughly and reposition before proceeding.
7. Do not compress springs or other elastic
objects. They could disengage hazardously.
8. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and steel-toe
work boots during set up and/or use.
9. Keep bystanders out of work area.
10. Do not stand directly in front of the
press when loaded. Do not leave the
press unattended when loaded.
11. Do not operate the hydraulic ram
beyond rated capacity.
12. Inspect before every use; do not use
if parts are loose or damaged.
13. Ram service must be performed only by
qualified repair personnel. Service or
maintenance performed by unqualified
personnel could result in a risk of injury.
14. When servicing a ram, use only identical replacement
parts – refer to attached, product-specific parts list
and diagram. Follow instructions in the
“User - Maintenance Instructions” section of this
manual. Use of unauthorized parts or failure to follow
maintenance instructions may create a risk of injury.
Page 2 For technical questions, please call 1-888-866-5797. Item 01666
Page 3
15. Only use with accessories rated to handle the
forces exerted by this tool during operation. Other
accessories not designed for the forces generated
may break and forcefully launch pieces.
19. Maintain labels and nameplates on the
Shop Press. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
16. Use only with ram included with this press.
17. Industrial applications must follow
OSHA requirements.
18. This product is not a toy. Keep it
out of reach of children.
SAVE THESE INSTRUCTIONS.
Specifications
Maximum Capacity
Working Distance 2" - 4"
Press Pin Diameter Ø5/8"
20. The warnings, precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the
operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
6 Tons
(12,000 lb)
Page 3For technical questions, please call 1-888-866-5797.Item 01666
Page 4
Setup - Before Use
Note: For additional information regarding the parts listed in the following pages,
refer to the Parts List and Assembly Diagram near the end of this manual.
Components and Controls
Ram
Handle
Fill Plug
(on back)
Piston
Ram
Press
Apron
Release
Valve
Press
Pin
Arbor
Plates
Press Apron
Support Pins
Figure A
Page 4 For technical questions, please call 1-888-866-5797. Item 01666
Page 5
Assembly Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Inspect tool before use, looking for damaged, loose, and missing parts. If any problems are found,
do not use tool until repaired.
Wear ANSI-approved safety goggles, heavy-duty work gloves,
and steel-toe work boots during set up and/or use.
Note: Finger tighten all connections until assembly
is done, unless instructed otherwise.
Assemble on a flat, level, hard surface.
Use a helper when necessary.
1. Attach Back (5) and Front (9) Posts
to Foot (8) with two sets of Bolts (16),
Spring Washers (21), and Nuts (24).
Note: Make sure holes align on Back and Front Posts.
2. Repeat for the other Posts and Foot.
Back
Post (5)
Spring
Washer
(21)
Bolt
(16)
8
Front
Post (9)
Nut
(24)
5. Slide Press Apron (6) over Post assemblies and
secure with Press Apron Support Pins (29).
Press
Apron
(6)
Press Apron
Support
Pins (29)
Figure D
6. Attach Press Pin Guide (14) to Lower Cross Beam (2)
with two sets of Bolts (16), Spring Washers (21)
and Nuts (24). Tighten connections securely.
Figure B
3. Attach Spreader (7) to Post assembly with
Bolt (17), Spring Washer (21) and Nut (24).
4. Repeat for other Post assembly.
Bolt
(17)
Spreader
(7)
Spring
Washer
(21)
Nut
(24)
Figure C
Lower
Cross
Beam (2)
Press Pin
Guide (14)
Figure E
7. Attach other Press Pin Guide to
Upper Cross Beam (4) with two sets
of Bolts (16), Spring Washers (21) and
Nuts (24). Tighten connections securely.
Upper Cross
Beam (4)
Nut
(24)
Figure F
Nut
(24)
Spring
Washer
(21)
Bolt
(16)
Bolt
(16)
Spring
Washer
(21)
Page 5For technical questions, please call 1-888-866-5797.Item 01666
Page 6
8. Slide Lower Cross Beam assembly between
Post assemblies and attach with two sets of
Bolts (17), Spring Washers (21) and Nuts (24).
Spring
Bolt
(17)
Figure G
9. Attach two Header Supports (3) together
with Bolt (19), Spring Washer (23) and
Nut (28), leaving a gap for the Header.
10. Repeat with other two Header Supports.
Washer
(21)
Nut
(24)
Note: Use a helper for the next step.
12. Slide Upper Cross Beam assembly between Post
assemblies and, at the same time, place Header
Support assemblies outside Post assemblies.
13. Attach with two sets of Bolts (18),
Spring Washers (22) and Nuts (25).
Note: Tighten connections enough to avoid wobbling.
Header
Support
Assembly
Upper
Cross Beam
Assembly
Bolt
(18)
Spring
Washer
(22)
Nut
(25)
Header
Support (3)
Nut
(28)
Figure H
11. Slide Header (1) between Header Support
assemblies and attach with two sets of Bolts (20),
Spring Washers (22) and Nuts (25).
Note: Tighten connections enough to avoid wobbling.
Nut
(25)
Header
(1)
Spring
Washer
(22)
Bolt
(19)
Spring
Washer
(23)
Bolt
(20)
Figure J
14. Hang Springs (10) on Bolts that
connect Header Supports.
Spring
(10)
Figure K
Figure I
Page 6 For technical questions, please call 1-888-866-5797. Item 01666
Page 7
1. Attach Eye Bolts (15) to Ram Plate (11)
by threading Nuts (27) on 1/2” only.
Eye Bolt
(15)
Nut
(27)
Ram Plate
(11)
18. Pull up on Ram Plate and attach Eye Bolts to Springs.
19. Push Ram Piston all the way down,
then place Ram on Ram Plate.
Note: If more space is needed to
install Ram, loosen Eye Bolts.
20. When Ram is in place, tighten Eye Bolts evenly,
making sure the Ram Plate remains level.
21. Pump Ram Handle until Piston is seated firmly in
Piston Ring, then tighten Eye Bolts as needed.
22. Place Arbor Plates on Press Apron.
Figure L
16. Guide Press Pin through Press Pin Guides and
let Ram Plate rest on Upper Cross Beam.
17. Level and square all components, then tighten
all connections securely, except for Eye Bolts.
Press
Pin
23. Follow instructions in
Bleeding the Ram on page 8.
Piston
Ring
Piston
Arbor
Plates
Figure M
Figure N
24. Locate Shop Press on a solid, level surface,
capable of supporting the weight of the
Shop Press and the workpiece.
Page 7For technical questions, please call 1-888-866-5797.Item 01666
Page 8
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.
Wear ANSI-approved safety goggles, heavy-duty work gloves, and steel-toe work boots during set up and/or use.
Bleeding the Ram
IMPORTANT! Before first use, check for proper
hydraulic fluid level in the Ram. Then thoroughly
test the Ram for proper operation prior to its
actual use. If the Ram appears not to be working
properly, it may be necessary to bleed its hydraulic
system of excess air. To bleed the Ram:
1. Remove the Fill Plug.
2. Place the slot on the Ram Handle
over the Release Valve.
3. Turn the Ram Handle counterclockwise
to open the Release Valve.
General Operating Instructions
1. Adjust the Press Apron height as necessary.
Note: The Press Apron should be in the
highest position possible with the workpiece
as close as possible to the Press Pin.
2. Place the workpiece on the Arbor Plates.
Adjust the Arbor Plates to support the
stationary part of the workpiece.
4. Insert the Ram Handle into the Fulcrum, then
pump the Ram Handle quickly several times.
5. Check the Fill Hole and, if necessary,
top off with hydraulic fluid.
6. Place the slot on the Ram Handle
over the Release Valve Screw.
7. Turn the Ram Handle clockwise to
close the Release Valve.
8. Replace the Fill Plug.
9. Test the Ram several times before putting into use.
WARNING! When pressing two items together, the
items must be lined up vertically. If not, one item
may forcefully eject itself sideways from the unit.
3. Close the Release Valve.
4. Pump the Ram Handle until Press Pin
contacts the workpiece. Continue to pump
the Ram Handle to press the workpiece.
WARNING! Keep area under Arbor Plates
clear. If Arbor Plates rest on obstruction
(i.e., bolt, debris, etc.), it creates an uneven press,
causing excess stress and possible breakage.
5. After work is completed, be careful when
releasing Jack pressure. Slowly open the
Release Valve, allowing the Ram Plate to rise.
6. WARNING! During the release process the
Ram may rise quickly. Stay clear.
7. Store Shop Press out of reach of children.
Page 8 For technical questions, please call 1-888-866-5797. Item 01666
Page 9
User-Maintenance Instructions
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration occurs, have the
problem corrected before further use.
1. Before each use, inspect the general condition of the
Shop Press and Ram. Check for broken, cracked, or
bent parts, loose or missing parts, and any condition
that may affect the proper operation of the product. If
a problem occurs, have the problem corrected before
further use.
Do not use damaged equipment.
2. Before each use, thoroughly test the Ram for
proper operation prior to its actual use. If the
Ram appears not to be working properly, follow
instructions in Bleeding the Ram on page 8.
3. Change the hydraulic fluid at least once every
three years. To change the hydraulic fluid:
a. With the Ram fully lowered, unhook the
Springs from the Eye Bolts, then remove
the Ram from the Ram Plate.
b. Remove the Filler Plug.
c. Tip the Ram to allow the old hydraulic fluid to drain
out of the unit completely, and dispose of the old
hydraulic fluid in accordance with local regulations.
d. Completely fill the unit with a high quality
hydraulic fluid (not included) until the fluid
just begins to run out of the Fill Hole.
e. Reinstall the Filler Plug.
f. Clean with a clean cloth using a
detergent or mild solvent.
g. Replace the Ram onto the Ram Plate.
Page 9For technical questions, please call 1-888-866-5797.Item 01666
Page 10
Troubleshooting
TO PREVENT SERIOUS INJURY:
Use caution when troubleshooting a malfunctioning ram.
Completely resolve all problems before use. If the solutions presented in the
Troubleshooting guide do not solve the problem, have a qualified technician inspect and repair the ram before use.
After the ram is repaired: Test it carefully without a load by raising it and lowering it fully, checking for proper
operation, BEFORE RETURNING THE RAM TO OPERATION.
DO NOT USE A DAMAGED OR MALFUNCTIONING RAM!
POSSIBLE SYMPTOMS
Pump
stroke feels
spongy
X X
Piston will
not lift all
the way
Handle
moves up
when ram
is under
load
X
Fluid
leaking
from filler
plug
X
(Make certain that the jack is not supporting
PROBABLE SOLUTION
a load while attempting a solution.)
Check that Release Valve is closed fully.
Valves may be blocked and may not
close fully. To flush the valves:
1. Lower the piston and securely close the Release Valve.
2. Manually lift the piston several inches.
3. Open the release valve and force the
piston down as quickly as possible.
Ram may be low on fluid. Check the
fluid level and refill if needed.
Ram may require bleeding - see instructions on page 8.
Unit may have too much hydraulic fluid inside,
check fluid level and adjust if needed.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
Page 10 For technical questions, please call 1-888-866-5797. Item 01666
Page 11
Parts List and Assembly Diagram
1
Parts List
Part Description Qty
1 Header 1
2 Lower Cross Beam 1
3 Header Support 4
4 Upper Cross Beam 1
5 Back Post 2
6 Press Apron 1
7 Spreader 1
8 Foot 2
9 Front Post 2
10 Springs 2
11 Ram Plate 1
12 Ram 1
13 Ram Handle 1
14 Press Pin Guide 2
15 Eye Bolt 2
Assembly Diagram
25
19
22
23
Part Description Qty
16 Bolt (M10x20) 8
17 Bolt (M10x100) 4
18 Bolt (M12x110) 2
19 Bolt (M6x40) 2
20 Bolt (M12x45) 2
21 Spring Washer (M10) 12
22 Spring Washer (M12) 4
23 Spring Washer (M6) 2
24 Nut (M10) 12
25 Nut (M12) 4
26 Arbor Plate 2
27 Nut 8 2
28 Nut 6 2
29 Press Apron Support Pin 2
20
28
10
12
13
18
17
17
15
3
27
16
14
21
22
25
21
5
24
6
9
24
14
11
4
2
26
16
21
24
21
8
24
7
29
Page 11For technical questions, please call 1-888-866-5797.Item 01666
Page 12
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS DOCUMENT AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries
to persons or property, or for incidental, contingent, special or consequential damages arising from the use of
our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797
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