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MODELS 76312A 12 TON & 76320A, 76720A & 76721 20 TON CAPACITY

AIR/HYDRAULIC BOTTLE JACKS

SETUP • OPERATING • MAINTENANCE INSTRUCTIONS

BEFORE USING THIS DEVICE, READ THIS MANUAL COMPLETELY 

AND THOROUGHLY, UNDERSTAND ITS OPERATING PROCEDURES, 

SAFETY WARNINGS AND MAINTENANCE REQUIREMENTS. FAILURE 

TO DO SO COULD CAUSE ACCIDENTS RESULTING IN SERIOUS OR 

FATAL PERSONAL INJURY AND/OR PROPERTY DAMAGE.

The use of portable automotive lifting devices is subject to certain hazards 

that cannot be prevented by mechanical means, but only by the exercise 

of intelligence, care, and common sense. It is therefore essential to have 

owners and personnel involved in the use and operation of equipment who 

are careful, competent, trained, and qualified in the safe operation of the 

equipment and its proper use. Examples of hazards are dropping, tipping, or 

slipping of motor vehicles or their components caused primarily by improperly 

securing loads, overloading, off-centered loads, use on other than hard level 

surfaces, and using equipment for a purpose for which it was not designed.
It is the responsibility of the owner to make sure all personnel read this 

manual prior to using this device. It is also the responsibility of the device 

owner to keep this manual intact and in a convenient location for all to see 

and read. If the manual is lost or not legible, contact Norco Industries, Inc. 

for a free replacement. If the operator is not fluent in English, the product 

and safety instructions shall be read to and discussed with the operator in 

the operator’s native language by the purchaser/ owner or his designee, 

making sure that the operator comprehends its contents. 

WARRANTY

This product is covered by a One Year Warranty. For details see the back 

cover of Norco’s product catalog or visit www.norcoindustries.com.

IMPORTANT: READ THESE INSTRUCTIONS BEFORE OPERATING

WARNING

•  Before lifting a vehicle, refer to the vehicle’s service manual or inquire 

from the vehicle manufacturer the recommended jack lifting points and 

jack stand support surfaces on the vehicle chassis.

•  Inspect the jack before each use. Do not use the jack if it is damaged, 

altered, modified, in poor condition, leaking hydraulic fluid, or unstable 

due to loose hardware. Take corrective action before using the jack.

•  This jack was designed for lifting purposes only. Do not attempt to work 

on the vehicle until jack stands rated equal to or greater than the rated 

capacity of the jack are positioned to support the load.

•  Do not move or dolly the vehicle while on the jack.
•  Do not use the jack beyond its rated capacity. Lift only dead weight.
•  Do not exceed 100 P.S.I. input air pressure.

•  Center load on saddle. Be sure setup is stable. Off-center loads can 

cause jack failure and/or loss of load.

•  Use the jack on a hard level surface.
•  Do not modify the jack or use saddle adapters or saddle extenders 

unless approved or supplied by Norco.

•  Do not position any part of your body directly above the lifting saddle 

when operating the jack.

•  When activating the jack with no load, the ram raises quickly, therefore 

never put your hands or any other part of your body between the lifting 

saddle and the load.

•  Do not use the jack in horizontal or angular positions.
•  Always lower the jack slowly and carefully.

 PROFESSIONAL LIFTING EQUIPMENT

®

1. 

Always store the jack in a well protected area where it will not be 

exposed to inclement weather, corrosive vapors, abrasive dust, or any 

other harmful elements. The jack must be cleaned of water, snow, sand, 

or grit before using.

DAILY

1. 

Check the condition of all moving parts and replace or repair when necessary.

2. 

Check the condition of the air hose and replace when necessary.

3. 

Check for external hydraulic fluid leakage and correct the problem immediately.

MONTHLY

All checks mentioned in the “Daily Maintenance and Inspection” 

procedures must be conducted.

1. 

Do not lubricate any portion of the lift saddle and make sure the saddle 

is free from grease, any kind of lubricant, or debris before using the jack.

2. 

Remove the in-line filter and clean the debris from the filter element and 

inside the filter housing.

3. 

Remove any signs of rust and lubricate the area to inhibit further rusting.

4. 

It should not be necessary to refill or top off the reservoir with hydraulic 

fluid unless there is an external leak. An external leak requires immediate 

repair  which  must  be  performed  in  a  dirt-free  environment  by  qualified 

hydraulic repair personnel who are familiar with this equipment. Norco 

Authorized Service Centers are recommended. 

IMPORTANT:

 In order 

to prevent seal damage and jack failure, never use alcohol, hydraulic 

brake fluid, or transmission oil in the jack. Use Chevron Hydraulic Oil 

AW ISO 32 or its equivalent Unocal Unax AW 150.
5. 

Every jack owner is responsible for keeping the jack label clean and 

readable. Use a mild soap solution to wash external surfaces of the jack 

but not any moving hydraulic components.

6. 

Do not attempt to make any hydraulic repairs unless you are a qualified 

hydraulic repair person that is familiar with this equipment.

PURGING AIR FROM THE HYDRAULIC SYSTEM

a. 

Sometimes the jack is shipped, handled or stored in a position other 

than vertical. This may cause air to be trapped in the pump and 

cause the ram to raise in increments instead of a smooth travel. To 

eliminate this condition perform the following steps:

b. 

Purge the air by turning the release valve knob two full turns in a 

counterclockwise direction from its closed position.

c. 

Then depress the air valve button for about 10 seconds.

d. 

Turn the release valve knob in a clockwise direction until it stops and 

is snug. The jack should function properly. Repeat steps “a” through 

“b” until the jack’s operation is satisfactory.

PREVENTATIVE MAINTENANCE

SETUP

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