Harbor Freight Tools 43753 User Manual
STRUT SPRING
COMPRESSOR
43753
SET UP AND OPERATING INSTRUCTIONS
This automotive tool is ideal for tire, body, and specialty shops
and garages, dealerships, and service stations!
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright© 2000 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Cover revised 08l
Specications
Capacity 7” Coil Spring Diameter
Maximum Opening 8”
Hardware Tensile 113-128 PSI, Minimum
Lead Screw 11-3/8” L x 5/8” Diameter
Lead Screw Torque 15 ft-lb Minimum
Support Arms 3/8” Steel Flat Stock
Support Arms Length 15-1/4”
Compressor Type Mac-Pherson Struts Only
Tool Weight 17-1/4 lb.
Save This Manual
You will need the manual for the safety warnings and precautions, assembly
instructions, 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 the manual and invoice in a safe and dry place for future reference.
Safety Warnings and Precautions
WARNING: When using tool, 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!
Avoid working alone1. . If an accident happens, an assistant can bring help.
Keep work area clean2. . Cluttered areas invite injuries.
Observe work area conditions3. . Don’t expose to rain. Keep work area well lit.
Keep children away4. . Children must never be allowed in the work area. Do not
let them handle machines, tools, or extension cords.
Store idle equipment5. . 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.
Dress properly6. . 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.
Use eye and ear protection7. . Always wear ANSI approved impact safety goggles.
Do not overreach8. . Keep proper footing and balance at all times. Do not reach
over or across electrical cables or frames.
Use the right tool for the job9. . 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.
SKU 43753 For technical questions, please call 1-800-444-3353. Page 2
Stay alert10. . Watch what you are doing, use common sense. Do not operate any
tool when you are tired.
Check for damaged parts11. . Before using any tool, any part that appears dam-
aged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment and binding of moving parts; any
broken parts or mounting xtures; and any other condition that may affect proper
operation. Any part that is damaged should be properly repaired or replaced by
a qualied technician. Do not use the tool if any switch does not turn On and Off
properly.
Replacement parts and accessories12. . 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.
Do not operate tool if under the inuence of alcohol or drugs13. . Read warning
labels on prescriptions to determine if your judgment or reexes are impaired while
taking drugs. If there is any doubt, do not operate the tool.
Maintenance14. . For your safety, maintenance should be performed regularly by a
qualied technician.
Capacity15. . Never exceed the recommended capacity (springs up to 7” in diameter).
Only use this tool with MacPherson Struts. Never use with high pitched struts.
Use with hand tools16. . Never use any air, electric, or impact tools with this tool.
Only operate this tool with a 3/4” socket and ratchet, 3/4” combination wrench, or
other applicable hand tools. Power, air, or electric tools may compress the spring,
leading to injury.
Spring Coils17. . If spring coils do not compress evenly, discontinue the operation.
Loosen the adjusting screw, reposition the strut spring, and retry.
Adjustment Screw (6)18. . Before initial use, apply grease adjustment screw. Also,
apply grease periodically during use.
Be careful when spring is compressed19. . Do not drop or jar spring. Doing so
might result in personal injury or damage.
Reaching Torque20. . When reaching the maximum torque (15 ft-lb) by tightening the
adjustment screw, discontinue, and loosen the screw. Reposition and retry.
Always use vehicle support stands.21.
Have qualied service technician inspect this tool annually.22.
The warnings, cautions, and instructions discussed in this instruction manual can-23.
not 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.
SKU 43753 For technical questions, please call 1-800-444-3353. Page 3
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