4
USER MANUAL
JEFJKBTL15
HYDRAULIC BOTTLE JACK
www.jeffersontools.com
5. Maintenance
6. Troubleshooting
IMPORTANT: ONLY FULLY QUALIFIED PERSONNEL SHOULD ATTEMPT MAINTENANCE OR REPAIR
WARNING: DO NOT USE BRAKE FLUID, OR ANY FLUID OTHER THAN HYDRAULIC JACK FLUID, AS TO DO SO MAY
CAUSE SERIOUS DAMAGE TO THE JACK AND WILL INVALIDATE THE WARRANTY!
• When the jack is not in use, the ram and piston must be in their lowest positions to minimise corrosion.
Remove the handle to inactivate jack.
• Keep the jack clean and lubricate all moving parts with acid free oil on a regular basis.
• To check oil level, fully lower the jack. Remove filler plug. The correct oil level is to the bottom of the filler opening.
• After a year of extensive use, the oil should be replaced in order to extend the life of the jack. Drain the oil through the
filler plug opening. Make sure that no dirt is allowed to enter the jack or the fresh oil.
• To replace the oil fill as required. Pump (unloaded jack) 5 or 6 times to expel air. Pump jack to full height and pour off excess oil
before refitting plug.
Note: Ensure waste oil is disposed of in accordance with local authority regulations.
WARNING: DO NOT USE THE JACK IF BELIEVED TO HAVE BEEN SUBJECTED TO ABNORMAL LOAD OR SHOCK.
INSPECT AND TAKE APPROPRIATE ACTION.
• Before each use check for broken, cracked, bent, or loose parts. Also check for any visible damage to welds, ram, pump, body
and base.
• If any suspect item is found remove jack from service and take the necessary action to remedy the problem.
• Periodically check the pump piston and piston rod for signs of corrosion. Clean exposed areas with a clean oiled cloth.
Symptom
Possible Cause
Corrective Action
Jack will not lift the load
1. Overloaded
2. Oil level low
3. Release valve not correctly closed
4. Air in system
5. Packing worn or defective
1. Be sure to use jack with adequate capacity
2. Top up oil level
3. Check and close release valve
4. Open release valve and air vent (if fitted) and pump the
handle a few times. Close valve and re-try
5. Return jack to local service agent
Jack does not lift high
enough or feels “spongy”
1. Low oil level
2. Worn seals
3. Air in system
4. Release valve not closed
1. Top up oil level
2. Return jack to local service agent
3. Open release valve and air vent (if fitted) and pump the
handle a few times. Close valve and re-try
4. Check and close release valve
Jack will not hold the load 1. Release valve partially open
2. Dirt on valve seals
3. Air in system
4. Faulty seals
1. Check and close release valve
2. Lower jack, close release valve. Pull up lifting arm to full
height by hand. Open the release valve to lower arm
3. Open release valve and air vent (if fitted) and pump the
handle a few times. Close valve and re-try
4. Return jack to local service agent
Jack will not descend to
minimum height, or will
not remain in lowered
position
1. Ram damaged
2. Air in system
3. Release valve partially open
1. Contact local service agent
2. Open release valve and air vent (if fitted) and pump the
handle a few times. Close valve and re-try
3. Check and fully open release valve
Jack will not function
properly after trying
solutions above
1. Internal malfunction or structural
damage
1. Stop usage and contact an authorized repair centre
