JBM 53112, Instruction Manual, Page: 9 / 56

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REF. 53112
EN
SETUP, OPERATION & PREVENTIVE MAINTENANCE (Cont.)
Maintenance
NOTICE:
Use high grade hydraulic oil only. Never use brake fluid, motor oil, transmission fluid,
turbine oil or any other fluids. ISO-VG22 or equivalent hydraulic oil is recommended.
With the jack in the fully lowered, level posi on, if unit cover is provided, remove unit
cover, then remove oil filler plug.
Proper oil level should be just covering inner cylinder as seen from the oil filler plug hole.
Do not overfill. Always fill with new, clean hydraulic jack oil as recommended above.
Reinstall oil filler plug, then reinstall unit cover.
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Check and Refill Oil
Periodically clean and lubricate all moving parts and pivot points. •
Lubrication and Cleaning
With the jack in the fully lowered position, release valve open, remove oil filler plug.
Pump the handle rapidly several times. Reinstall oil filler plug.
Turn the handle/release valve clockwise to the closed position.
Pump the handle until the lift arm reaches maximum height and continue to pump
several times to remove trapped air in the system.
Turn the handle/release valve counterclockwise in one full turn and lower lift arm to the
lowest position. Use force on saddle if necessary.
Carefully and slowly loosen oil filler plug to release pressurized air.
Repeat above steps until trapped air is completely vented.
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Air Venting Procedures
Any jack that appears to be damaged in any way, is found to be worn, or operates abnormally
SHALL BE REMOVED FROM SERVICE UNTIL REPAIRED . It is recommended that neces -
sary repairs be made by a manufacturer’s or supplier’s authorized repair facility if repairs are
permitted by the manufacturer or supplier.
Damaged Equipment
Because of potential hazards associated with this type of equipment, no alterations shall be
made to the product.
Alterations
Only attachments and/or adapters supplied by the manufacturer shall be used.
Attachments and Adapters