Central Machinery 90752 Assembly instructions

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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. 21c
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© 2003 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.
To ols required for assembly and se rv ic e m ay n ot b e i nc lu de d .
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
(Photograph Shows Only a Partial Assortment of the Clamps,
Studs, and Nuts included in the Kit).

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Specifications
Item Description
Hardware Material Machined Black Oxide Coated Alloy Steel
Clamping Kit Holder 3-3/4" x 6-3/4" x 11-5/8"
New Weight 14.55 lb

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Save This Manual
You will need the manual for the safety warnings and precautions, operating and
maintenance procedures, parts list and diagram. Keep your invoice with this manual.
Write the invoice number on the inside of the front cover. Keep this manual and the
invoice in a safe and dry place for future reference.
Safety Warnings and Precautions
WARNING: When using product, basic safety precautions should always be followed
to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this product!
1. Avoid working alone. If an accident happens, an assistant can bring help.
2. Avoid electrical shock. Use extreme caution when clamping around
uninsulated conductors or bus bars.
3. Keep work area clean. Cluttered areas invite injuries.
4. Avoid damaging equipment. Use only as specified in machine manual that
accompanied the machinery.
5. Observe work area conditions. Don’t expose to rain. Keep work area well
lighted.
7. Keep children away. Children must never be allowed in the work area. Do
not let them handle machines, tools, or extension cords.
6. Store idle equipment. When not in use, tools must be stored in a dry location
to inhibit rust. Always lock up tools and keep out of reach of children.
8. Dress properly. Do not wear loose clothing or jewelry as they can be caught
in moving parts. Protective, electrically nonconductive clothes and nonskid
footwear are recommended when working. Wear restrictive hair covering to
contain long hair.
9. Use eye and ear protection. Always wear ANSI approved impact safety
goggles.
10. Do not overreach. Keep proper footing and balance at all times. Do not reach
over or across machinery, especially while it is moving.
11. Maintain tools with care. Inspect tools periodically and have them replaced, if
damaged, only with identical parts available at Harbor Freight Tools.

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12. Use the right tool for the job. Do not attempt to force a small tool or
attachment to do the work of a larger industrial tool. There are certain
applications for which this tool was designed. Do not modify this tool and do
not use this tool for a purpose for which it was not intended.
13. Stay alert. Watch what you are doing, use common sense. Do not operate
any tool when you are tired.
14. Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Check for any broken parts or
mounting fixtures and any other condition that may affect proper operation.
Any part that is damaged should be replaced.
15. Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of any other parts will void the warranty. Only use
accessories intended for use with this tool. Approved accessories are
available from Harbor Freight Tools.
16. Do not operate tool if under the influence of alcohol or drugs. Read warning
labels on prescriptions to determine if your judgment or reflexes are impaired
while taking drugs. If there is any doubt, do not operate the tool.
Warning: The warnings, cautions, 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.
Unpacking
When unpacking, check to make sure the following parts are included. If any parts
are missing or broken, please call Harbor Freight Tools at the number on the cover
of this manual.

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Operation
The 42 Piece Clamping Kit is for use with a Milling Machine with 1/2" wide table slots.
WARNING! Use the instructions that accompany the Milling Machine (not included)
for operating, safety, and maintenance instructions. The below operating instructions
are only a suggestion for identifying parts and possible uses.
1. After determining what workpiece you will be milling, select the correct length of
Clamping Stud (1), T-Nut (2), Flange Nut (4), or Coupling Nut (5) (not shown),
that is appropriate for the dimensions of your workpiece.
See Figure A.
2. You can then choose the correct Step Blocks (3) that will help your workpiece
to be held securely during the milling process. Tighten the Flange Nut (4) (or
Coupling Nut (5), not shown) firmly, until the workpiece can no longer move.
After ensuring that your workpiece is secured properly, proceed with the Milling
instructions (not included). See Figure A.
(1) Clamping Stud
(4) Flange Nut
(6) Slotted Step Clamp
(Simulated
Workpiece)
(3) Step Block (2) T-Nut
Figure A
Maintenance
General
1. Never leave work unattended. Replace parts back into the Clamping Kit
Holder (7) when finished. (Not shown).
2. Periodically clean all 42 pieces and see that they are free from oil or rust.
3. Keep all parts free from moisture to avoid rust and corrosion.

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PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND
ASSEMBLY DIAGRAM IN THIS MANUAL 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.

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Parts List
NOTE: Some parts are listed and shown for illustration purposes only and are not
available individually as replacement parts.
Part 2
(Photograph of a Partial Assortment of Parts)
Part 4
Part 5
Part 3
Part 3
Part 6
Part 6
Part 1
Part# Description Qty
1 Clamping Studs 8", 7", 6", 5", 4" & 3" Long (2 ea) (all with M10 X 1.500 Thread) 12
2 T-Nuts M10 X 1.500 4
3 Step Blocks 1-1/8", 1-1/2" & 3-9/16" Long (4 ea) (all 31/32" Wide) 12
4 Flange Nuts M10 X 1.500 4
5 Coupling Nuts M10 X 1.500 4
6
Slotted Step Clamps: 15/32" Thick X 1-1/8" W X 2-1/2" L 2
Slot Size: 1/2" W X 1-1/8" L
47/64" Thick X 1-7/32" W X 4" L 2
Slot Size: 1/2" W X 1-11/16" L
27/32" Thick X 1-7/32" W X 6-1/16" L 2
Slot Size: 1/2" W X 2-7/16" L
7 Clamping Kit Holder (not shown) 1
Parts Diagram

90 Day Limited 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.
26541 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797