Central Hydraulics 95553 User Manual

20 Ton Air Over Hydraulic Jack

Model

95553

ASSEMBLY AND OPERATION INSTRUCTIONS

Diagrams within this manual may not be drawn proportionally.

Due to continuing improvements, actual product may differ slightly from the product

described herein.

Distributed exclusively by Harbor Freight Tools®.

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our website at: http://www.harborfreight.com

For technical questions or replacement parts, please call 1-800-444-3353.

Read this material before using this

product. Failure to do so can result in
serious injury.
SAVE THIS MANUAL.

Copyright© 2007 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.

REVISED MANUAL 08b

Specifications

Maximum Height

Minimum Height 10-1/4” without screw extension
Ram Travel 6-½”
Air Fitting ¼” NPT with quick release nipple

16-3/4” without screw extension
20” with screw extension

Operating Pressure 110-120 PSI
Lifting Capacity 20 Tons (40,000 lb.)
Base Dimensions 8-5/8” L x 5-3/16” W
Hose Size 3/8” x 48” L
Weight 35 lb.

Note:

All part numbers mentioned in this manual refer to the Parts Lists and Assembly Diagrams
on pages 8 - 11.

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 tool!

Keep work area clean. 1. Cluttered areas invite injuries.

Observe work area conditions. 2. Do not use machines or power tools in damp or wet

locations. Don’t expose to rain. Keep work area well lit.

Keep children away. 3. Children must never be allowed in the work area. Do not let them

handle machines, tools, or extension cords.

Store idle equipment. 4. 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.

Use the right tool for the job. 5. 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. It will do the job better and more safely at the rate for which it was intended. Do

not modify this tool and do not use this tool for a purpose for which it was not intended.

Dress properly. 6. Do not wear loose clothing or jewelry as they can be caught in moving

parts. Protective, electrically non-conductive clothes and non-skid footwear are recom-

mended when working. Wear restrictive hair covering to contain long hair.

Use eye, hand and ear protection. 7. Always wear ANSI approved impact safety goggles

when working. Wear a full face shield if you are producing metal filings or wood chips.

Wear an ANSI approved dust mask or respirator when working around metal, wood, and

chemical dusts and mists. Wear protective gloves when handling tools and equipment.

Do not overreach. 8. Keep proper footing and balance at all times. Do not reach over or

across running machines.

SKU 95553 For technical questions please call 1-800-444-3353. Page 2

Maintain tools with care. 9. Keep tools maintained and clean for better and safer perfor-

mance. Follow instructions for lubricating and changing accessories. The handles must

be kept clean, dry, and free from oil and grease at all times.

Remove adjusting keys and wrenches. 10. Check that keys and adjusting wrenches are

removed from the tool or machine work surface before beginning work.

Avoid unintentional operation. 11. Be sure all safety precautions are followed, lift is secure

and vehicle is properly positioned before operating this jack. Always think several steps

ahead of your current operation to ensure safety.

Stay alert. 12. Watch what you are doing, use common sense. Do not operate any tool when

you are tired or using any medication.

Check for damaged parts. 13. 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 alignment and binding of moving parts; any broken parts

or mounting fixtures, and any other condition that may affect proper operation. Any part

that is damaged should be properly repaired or replaced by a qualified technician. Do

not use the tool if any control does not operate properly.

Replacement parts and accessories. 14. When servicing, use only identical replacement

parts. Use of any other parts will void the warranty.

WARNING! Fluid ejected at high pressure can cause injection injury.15. Do not handle

equipment if leaking. Avoid high pressure leak ejection stream.

Do not operate tool if under the influence of alcohol or drugs. 16. 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.

Maintenance. 17. For your safety, service and maintenance should be performed regularly

by a qualified technician.

Use compressed air only. 18. Only use clean, dry and regulated compressed air at no more

than 120 PSI to power this tool. Never use oxygen, carbon dioxide or any other bottled

gas as a power source for this tool.

Keep the air hose away from the jack at all times. 19. If an air hose is crushed, it can

rupture resulting in personal injury.

Do not exceed the weight limit of this jack, which is 40,000 lb. (20 tons). 20. Overloading

may cause damage to the hydraulic seals. Overloading may also cause the jack to fade

or suddenly fail, allowing the vehicle to suddenly lower.

Do not lift an unbalanced load. 21. An unbalanced load may suddenly pitch off the jack

possibly causing serious injury or property damage.

Avoid Dynamic Loading. 22. This jack is designed to safely handle a mass of 20 tons. If

an object is dropped on the jack, the force applied to the jack will be greater than the

force applied by the same object at rest, and may exceed the safe operation limits of

this tool.

Avoid Pinch Injury. 23. The return spring will compress when the jack is lowered. Be care-

ful to keep hands, tools, clothing and other materials away from the return springs to

avoid pinch injury.

SKU 95553 For technical questions please call 1-800-444-3353. Page 3

Only use high quality hydraulic jack oil; do not substitute any other type of oil.24.

Warning: The warnings, cautions, and instructions discussed in this in-25.

struction 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.

WARNING: 26. The brass components of this product contain lead, a chemical

known to the State of California to cause birth defects (or other reproductive

harm). (California Health & Safety code § 25249.5, et seq.)

UNPACKING

When unpacking, check for damage. If any parts are missing or broken, please call Harbor
Freight Tools at the number on the cover of this manual.

(1) Air / Hydraulic 20-ton bottle jack
(1) Attached 48” Air Hose with fittings

(1) 2-piece jack handle
Please refer to the Assembly Diagrams and Parts Lists on pages 8 - 11 of this manual for
other parts information.

REV 08a

SKU 95553 For technical questions please call 1-800-444-3353. Page 4