HYDRAULIC JACK
MAINTENANCE GUIDE
IMPORTANT:
Service jacks are designed for lifting purposes only;
always support raised load with jack stands.
REGULAR MAINTENANCE
Monthly or as necessary (depending on usage)
1. Using a grease gun, add grease to grease fitting in the lift arm pivot
shaft. (Use a multi-purpose NLGI type grease only.)
2. Lubricate all linkages and pivot points.
(Use white lithium spray grease only.)
3. Remove handle; lubricate handle receptacle and handle end.
(Use white lithium spray grease only.)
4. Lubricate both rear casters, bearings and both front wheels.
(Use white lithium spray grease only.)
5. Tighten all accessible hardware.
HYDRAULIC FLUID LEVEL
If the jack’s reservoir is low on fluid or the reservoir is being filled
after maintenance follow these instructions:
1. IMPORTANT – never fill the jack’s reservoir all the way as this will
affect the jack’s performance. Use only hydraulic jack fluid with 22
viscosity rating to prevent seal damage.
2. Place the jack on a level surface and remove the cover plate.
3. Turn jack’s pump handle counterclockwise two full rotations from
its closed position to lower the jack’s lift arm all the way down.
4. Keep the pump handle parallel to the ground and remove the fill
screw in the jack’s reservoir. Look through the fill screw hole in the
reservoir and make sure the fluid is level with the top of the cylinder
tube. Fluid level too low or too high will affect the jack’s performance.
5. Install the fill screw and tighten. It may be necessary to follow the
air purging procedure in the SETUP instructions of this manual.
MFJ354PA
4
rev. 04/05/21
MFJ354PA 31/2 Ton Service Jack
OWNER/USER RESPONSIBILITY
The owner and/or user must have an understanding of the
manufacturer’s operating instructions and warnings before using
this jack. Personnel involved in the use and operation of equipment
shall be careful, competent, trained, and qualified in the safe
operation of the equipment and its proper use when servicing motor
vehicles and their components. Warning information should be
emphasized and understood. If the operator is not fluent in English,
the manufacturer’s instructions and warning shall be read to and
discussed with the operator in the operator’s native language by
the purchaser/owner, making sure that the operator comprehends
its contents. Owner and/or user must study and maintain for future
reference the manufacturers’ instructions. Owner and/or user is
responsible for keeping all warning labels and instruction manuals
legible and intact. Replacement labels and literature are available
from the manufacturer.
INSPECTION
Visual inspection should be made before each use of the jack,
checking for leaking hydraulic fluid and damaged, loose or missing
parts. Each jack must be inspected by a manufacturer’s repair
facility immediately if subjected to an abnormal load or shock. Any
jack which appears to be damaged in any way, is found to be badly
worn, or operates abnormally MUST BE REMOVED FROM SERVICE
until necessary repairs are made by a manufacturer’s authorized
repair facility. It is recommended that an annual inspection of the
jack be made by a manufacturer’s authorized repair facility and
that any defective parts, decals or warning labels be replaced with
manufacturer’s specified parts. A list of authorized repair facilities is
available from the manufacturer.
PROPER STORAGE
It is recommended that the jack be stored in a dry location with all
wheels touching the ground on a relatively level surface.
FILL SCREW
FLUID LEVEL
RESERVOIR TUBE
CYLINDER
