Use and Care Manual

3
Warning
1. Read and understand all warnings and operating instructions before attempting to use this jack.
2. Do not exceed rated capacity. Overloading can cause damage to and/or failure of the jack.
3. If jack is damaged and/or operates abnormally, remove from service until repaired.
4. Support load by appropriate means after lifting.
5. Always center load on the jack.
6. Use this jack as a lifting device only.
7. Use only on a hard, level surface capable of sustaining the load. Using the bottle jack on other than
hard, level surfaces can result in jack instability and possible loss of load.
8. Lift only on areas of the vehicle specified by the vehicle manufacturer.
9. Always replace damaged, missing or worn labels and use only genuine factory replacement parts
when replacement is necessary.
10. Only use attachments and/or adapters supplied with, or sold specifically for, the jack.
11. No alterations shall be made to this product.
12. Failure to comply with all of these warnings may result in loss of load, damage to jack, and/or
personal injury or property damage.
Specifications
Model Number ................................................................. AHJ-12.................................................. AHJ-20
Stock Number.................................................................. 456612.................................................. 456620
Rated Load Capacity (ton) ....................................................... 12.......................................................... 20
Minimum Height (in.)............................................................. 9.65....................................................... 9.65
Maximum Height (in.).......................................................... 18.70..................................................... 18.70
Air Pressure Required (psi) ........................................... 90 to 145................................................90 to 145
Base Size (L x W)(in.) ............................................... 8.27 x 6.30............................................. 8.66 x 6.89
Net Weight (lbs) .................................................................. 26.46..................................................... 30.86
Shipping Weight (lbs).......................................................... 30.86..................................................... 39.68
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, JET reserves the right to change specifications at any time and without prior
notice, without incurring obligations.
JET AHJ Series Bottle Jacks comply with ANSI/ASME B30.1 and PALD-1 Standards.
(NOTE: Numbers in parentheses refer to item
numbers on the breakdown, page 5.)
Inspection Before Use
Prior to each use, visually inspect for leaking
hydraulic oil, damaged, loose or missing parts. If
jack becomes worn or damaged in any way, or
operates abnormally, remove it from service and
contact your nearest service center for repair.
Purging the Hydraulic System
During transit, the jack’s hydraulic system may
become filled with air, causing a spongy ram
action. The air should be purged from the
system before operating.
1. To purge air from the hydraulic system,
open the release valve (49) by turning it
counterclockwise for 2 to 3 turns.
2. Turn the jack 90° to its horizontal position.
Be sure that the air motor is underneath the
ram assembly (37).
3. Connect the air valve (29) to an air supply,
and press the lever on the air valve (29) for
20 seconds to operate the jack.
4. Close the release valve (49) by turning it
clockwise while the jack remains at its
horizontal position. If the ram assembly (37)
doesn’t extend, repeat steps 1 through 4.