MODELS 76312 12 TON & 76320, 76720 & 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 Limited Lifetime 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 130 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
®
IMPORTANT: Remove and discard the round red sticker covering the air vent hole on the top of the air motor.
Failure to remove this sticker will prevent the air motor from operating properly.
SETUP
Note: Revision letters (A, B, C, D etc.) after model numbers have been omitted as they do not affect the setup,
operating and maintenance instructions of a particular jack unless otherwise noted.
PURGING AIR FROM THE HYDRAULIC SYSTEM
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:
1.
Purge the air by turning the release valve knob two full turns in a
counterclockwise direction from its closed position.
2.
Then depress the air valve button for about 10 seconds.
3.
Turn the release valve knob in a clockwise direction until it stops and is
snug. The jack should function properly.
Repeat steps 1 through 3 until the jack’s operation is satisfactory.
PURGING HYDRAULIC OIL FROM THE AIR MOTOR
Hydraulic oil can get into the air motor if the jack is handled or stored in
a position other than vertical. This will cause a combination of air and
hydraulic oil to be forced out of the air vent hole on the top of the air
motor. To eliminate this condition perform the following steps:
1.
Place the jack in a vertical position and hook it up to an air source.
2.
Activate the push button air valve to force the air/hydraulic oil mixture
from the air motor. (Note: Depending on how much hydraulic oil is in the
air motor will depend on how long you have to continue to activate the
push button air valve. If a lot of hydraulic oil is in the air motor it could
take up to a dozen full stroke activations of the jack to remove all the
hydraulic oil.) The air/hydraulic oil mixture will continue to come out of the
air motor’s air vent hole until all the hydraulic oil is purged. Then only air
will vent through this hole.
