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• Pump jack handle until saddle nears contact
with vehicle lifting point. Check to see that the
saddle is centered and will contact lifting point
firmly.
• Continue to pump jack handle to lift vehicle to
desired height.
• After lifting, support the load with
appropriately rated vehicle support stands
before working on vehicle.
WARNING: Never work on, under, or around a
load supported only by a hydraulic jack.
Lowering the Jack
• Raise load high enough to clear jack stands;
then carefully remove the stands.
• Carefully open the release valve by slowly
turning the handle counterclockwise.
• After removing jack from under vehicle, if
saddle has not fully descended, push it all the
way down to reduce ram exposure to rust and
contamination.
How it works
With Release Valve Closed
• An upward stroke of the jack Handle draws oil
from the reservoir tank into the plunger cavity.
Hydraulic pressure holds the valve closed,
which keeps the oil in the plunger cavity.
• A downward stroke of the jack Handle
releases oil into the lift cylinder, which forces
the power unit ram out. This raises the
saddle.
• When the ram reaches maximum extension,
oil bypasses the lift cylinder through an
overload valve back into the oil reservoir,
protecting the jack from damage. This bypass
system also goes into effect when the jack
is overloaded (load exceeds 4,000 lbs) to
protect the jack from damage and the user
from possible serious injury.
• Opening the release valve allows oil to
flow back into the reservoir. This releases
hydraulic pressure on the ram, which results
in lowering the saddle.
MAINTENANCE
To Add Oil:
• Position jack on the level ground and lower
the saddle.
• Remove the oil fill screw.
• Fill the oil case until oil level is just beneath
the lower rim of oil fill hole. Replace oil plug.
• Perform the Air Purge Procedure.
To Replace Oil:
• Fully open release valve by turning handle
counterclockwise as far as it will go.
• Turn the jack over so that old oil will drain
from the oil fill hole. Remove the oil fill
screw.
• Refill through oil fill hole. Keep dirt and
other material clear when pouring. Fill to just
beneath lower rim of hole. Replace oil fill
screw.
• Perform Air Purge Procedure.
Lubrication
• Add lubricating oil (WD-40) to all moving
parts when needed.
• For light duty use, lubricate every six
months.
• For heavy and constant use, lubrication is
recommended every month.
Rust Prevention:
• Check ram and pump plunger on the Power
Unit Assembly every two months (or sooner,
based on usage) for any signs of rust or
corrosion. Lift the jack as high as it goes
and look under and behind the lifting arm. If
signs of rust are visible clean as needed and
wipe down with with an oily cloth or cloth
sprayed with WD-40.
• When storing the jack, always have the
saddle and pump plunger in the down
postion.
ALWAYS USE A GOOD GRADE
HYDRAULIC JACK OIL. DO NOT USE
HYDRAULIC BRAKE FLUID, ALCOHOL,
GLYCERINE, DETERGENT, MOTOR
OIL OR DIRTY OIL. USE OF AN UN-
RECOMMENDED FLUID CAN CAUSE
DAMAGE TO YOUR JACK.
Air Purge Procedure
During shipment or after oil refill, air may get
into the hydraulic system causing reduced
lifting performance. Perform Air Purge
Procedure described on page 2.
5
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