Raising The Jack; Lowering The Jack; To Add Oil; To Replace Oil - CERTIFIED 299-3046-4 Manuel D'instructions

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model no. 299-3046-4 | contact us 1-866.523.5218

RAISING THE JACK

• Close the release valve by turning the
handle clockwise as far as it will go.
• Block the vehicle's wheels for lifting
stability.
• Refer to the vehicle manufacturer's owner's
manual to locate approved lifting points on
the vehicle.
• Pump jack handle until saddle nears contact
with the vehicle. Check to see that the
saddle is centred and will contact the load
lifting point firmly.
• Continue to pump the jack handle to lift the
vehicle to the desired height. After lifting,
support the load with appropriately rated
vehicle support stands before working on
the vehicle.

LOWERING THE JACK

• Carefully open the release valve by slowly
turning the handle counter-clockwise.
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
release oil into the cylinder, which forces
the ram out. This raises the saddle.
• When the ram reaches maximum extension,
oil is bypassed back into the reservoir to
prevent an over-extended ram stroke and
possible damage to the jack.
• 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.

TO ADD OIL

• Position the jack on level ground, and lower
the saddle.
• Use a flat-blade screwdriver to pop off the
inspection plate.
• Remove the oil plug.
• Fill the oil case until the oil level is just
beneath the lower rim of the oil fill hole.
Replace the oil plug.
• Perform the Air Purge Procedure described
below.

TO REPLACE OIL

• Fully open the release valve by turning the
handle counter-clockwise as far as it will go.
• Turn the jack over so that old oil will drain
from the oil fill hole.
• Refill through the oil fill hole. Keep dirt and
other material clear when pouring. Fill to
just beneath the lower rim of the hole.
Replace the oil plug.
• Perform the Air Purge Procedure described
below.

LUBRICATION

• Add lubricating oil to all moving parts when
needed.
• For light-duty use, lubricate every six
months.
• For heavy and constant use, monthly
lubrication is recommended.

RUST PREVENTION

• Check the 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 an oily cloth.
• When storing the jack, always have the
saddle and pump plunger in the down
position.
ALWAYS USE A GOOD GRADE OF HYDRAULIC JACK OIL. DO NOT USE HYDRAULIC BRAKE FLUID,
ALCOHOL, GLYCERINE, DETERGENT, MOTOR OIL OR DIRTY OIL. USE OF A NON-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 poor lifting
performance.
A system air purge is required as follows:
• Turn the release valve fully counter-clockwise in order to fully open the release valve.
• Pump the handle rapidly several times.
• Turn the release valve clockwise to close the release valve.
• Pump the handle until the lift arm reaches maximum height, and continue to pump several times
to remove trapped air in the ram.
• Turn the release valve fully counter-clockwise in order to lower the lift arm to the lowest
position. Use force on the saddle if necessary.
• Turn the release valve clockwise to the closed position, and check for proper pump action. It
may be necessary to perform the above steps more than once in order to ensure that air is
totally evacuated.

TROUBLESHOOTING

Jack will not Jack will not Jack will not
lift load hold load lower
×
×
× ×
×
× ×
Poor jack Causes and solutions
lifting
Release valve is not
completely closed.
Turn clockwise.
Air is in hydraulics.
×
Purge air from system.
Low oil Level.
×
Add oil as required.
Oil reservoir is overfilled.
Drain excessive oil.
Lubricate moving parts.
Power unit malfunctioning.
×
Replace the power unit.
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