Napa 791-2300 B Operating Manual & Parts List page 3

OPERATING MANUAL & PARTS LIST FOR 791-2300 B, 791-2320 B
ASSEMBLY INSTRUCTIONS
SETUP
1. Refer to the exploded view parts drawing in this manual to identify parts mentioned in this setup procedure.
2. The two piece handle can be slip fit together to form a complete handle length.
3. Sometimes air gets trapped in the hydraulic system during shipping and/or handling.
PURGING AIR FROM THE HYDRAULIC SYSTEM
a. Attach the end of the handle to the jack's release valve and turn the handle in a counterclockwise direction two full revolutions from
its closed position.
b. Install the handle in the pump handle receiver and pump the jack about 15 full incremental pump strokes.
c. Attach the end of the handle on the release valve again and turn the handle in a clockwise direction until tight.
d. Proceed to pump the handle until the ram raises to maximum height.
e. Repeat steps "a" through "d" until all air is purged from the system.
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
1. The air/hydraulic bottle jack can be activated by manual pump or by depressing an air valve that is hooked up to the shop's compressed
air system. Regardless of the pump method used, the release valve at the base of the jack must be turned in a clockwise direction
until tight in order to activate the jack. The pump handle is used to turn the release valve. It will be necessary to use 100 to 120 PSI air
pressure in order for the jack to lift its maximum load capacity. Lowering the load may be accomplished by connecting the pump handle
to the release valve and turning it slowly and carefully in a counterclockwise direction. Make sure all parts of your body are out of the way
when lowering a load. Sometime it is better to use a floor jack with a long pump handle for the lift application.
2. DO NOT USE THE AIR HOSE TO PULL THE WEIGHT OF THE JACK AS IT MAY CAUSE DAMAGE TO THE FITTINGS AND/OR AIR
HOSE. DO NOT NEGLECT THE COMPONENTS, FITTINGS, ADAPTERS, AND HOSES BY ROUGH HANDLING OF THE JACK. DEFECTS
RESULTING FROM ROUGH HANDLING ARE CONSIDERED ABUSE OR MISUSE OF THE PRODUCT AND NOT ELIGIBLE FOR WARRANTY
CONSIDERATION.
3. Before lifting a vehicle, chock the vehicle's tires that will not be lifted off the ground, put the vehicle transmission in "park" or in gear if a
manual operated transmission, and apply the emergency brake.
4. Position the jack under the load and determine how much ram stroke is required to lift the load to the desired height. If there is not
enough required ram stroke, turning the extension screw in a counterclockwise direction and using the proper adapter provided can
make up the required difference.
5. Before lifting a load make sure the saddle or adapter is centered on the load and the setup is stable. If not, reposition the jack and saddle
contact with the load until the setup is stable. During lifting, inspect the position of the jack in relationship to the ground and the ram in
relation to the load to prevent any unstable conditions from developing. If conditions look like they are becoming unstable, slowly lower
the load and make the appropriate setup corrections after the load is fully lowered.
6. THE ENTIRE BASE OF THE JACK IS TO BE USED AS THE LOAD BEARING SURFACE. LOAD MAY SLIP OFF THE JACK IF THE CORNERS
OF THE JACK'S BASE ARE USED AS THE ONLY LOAD BEARING SURFACE BECAUSE THEY COULD BEND.
7. After the load is lifted, immediately place jack stands in their designated locations and adjust the stands' support columns to where
they almost touch the vehicle. Although jack stands are individually rated, they are to be used in a matched pair to support one end of a
vehicle only. Stands are not to be used to simultaneously support both ends or one side of a vehicle. Slowly and carefully turn the release
knob in a counterclockwise direction to gently lower the vehicle onto the jack stands and make sure the vehicle is safely supported by the
saddles and not the locating lugs of the saddles. Inspect the relationship of the jack stands with the ground and the jack stand columns
and saddles with the vehicle to prevent any unstable conditions. If conditions look unstable, close the jack's release valve and depress
the air valve to raise the vehicle off the jack stands. Make the appropriate setup changes and slowly and carefully lower the vehicle onto
the jack stand saddles.
8. After the work is done, close the release valve and depress the air valve until the jack is high enough to remove the vehicle or load from
the jack stand saddles. Be sure load is stable. If it is not, lower load back onto jack stands. Make appropriate setup corrections and
repeat the step again. Remove the jack stands from under the vehicle, being very careful not to move the vehicle.
9. 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 the
equipment. 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 NAPA hydraulic Jack Oil #765-1541.
791-2300 B, 791-2320 B 3 rev. 03/12/18