Harbor Freight Tools 94487 - Manual (Page 8)

Page 8 For technical questions, please call 1-800-444-3353. SKU 94487 95553
Operation
TO PREVENT SERIOUS INJURY:
Before use, park vehicle on a flat, level, solid, surface
safely away from oncoming traffic. Turn off the
vehicle’s engine. Place the vehicle’s transmission in
“PARK” (if automatic) or in its lowest gear (if manual).
Set the vehicle’s emergency brake. Then,
chock the wheels that are not being lifted.
This is an air-actuated hydraulic bottle jack. The air motor
is air pressure activated and drives the hydraulic jack.
In the event no air pressure is available, a standard
hydraulic piston assembly is provided for hand jacking.
1. Position the Jack on a solid level surface
that can withstand the weight of the jack
and the load which will be lifted.
2. Be sure the load is balanced on the jack.
Properly rated jack stands (not included) positioned
under the weight provide a good safety precaution
against the possibility of the load toppling.
3. Be sure that the jack is positioned at a proper lift
point on the item to be lifted. Using appropriate lift
points avoid possible damage to the item. Rotate
the Screw Extension (13.1) on the Ram (13) until
it contacts the underside of the load to be lifted.
Screwing counterclockwise raises the extension,
screwing clockwise lowers the extension.
4a. Pneumatic Operation:
a. Connect a pressurized air source
to the Air Valve (44).
b. Engage the notch on the end of the
Jack Handle (45) onto the Release Valve (4).
Turn the Release Valve slightly clockwise
to ensure that the valve is closed. The
jack will not lift if the valve is open.
c. When it is safe to do so, squeeze the
Throttle Lever on the Air Valve (44).
This will admit pressurized air into the
Air Motor (42) which will cause the hydraulic
jack to lift. Continue to hold the Throttle Lever
down until the load is lifted to the desired level.
4b. Manual Operation:
To manually operate the jack without use of
compressed air, close the Release Valve,
then insert the end of the Jack Handle (45)
into the Handle Bracket (34) and pump up
and down. This action will raise the jack.
5. Support the load using jack stands (not included)
or other means to support the weight.
Do not leave the load on the jack for an
extended period of time. Damage to the jack
or personal or property injury may result.
6. To lower the item, first use the Jack to lift the
item slightly and remove the jack stands.
7. Engage notches in the end of the Jack Handle (45)
onto the Release Valve (4). Turn the valve
approximately 1/4 turn counterclockwise to lower
the load. When the load is lowered, turn the
Release Valve clockwise to stop the motion.
The rated capacity of jack stands is per pair, not the
individual capacities combined unless specifically
noted on the product by the jack stand manufacturer.
Do not exceed rated jack stand capacity. Ensure that
the vehicle support points are fully captured between
the outer lugs of both jack stands. Use a matched
pair of jack stands per vehicle to support one end
only. Use 1 pair per vehicle only. Failure to do
so may result in sudden loss of load, which may
cause personal injury and/or property damage.
Inspection, Maintenance, & Cleaning
Procedures not specifically explained in
this manual must be performed only by
a qualified technician.
TO PREVENT SERIOUS INJURY
FROM TOOL FAILURE:
Do not use damaged equipment.
If abnormal noise or vibration occurs, have
the problem corrected before further use.
1. Periodically check the air and hydraulic fittings
for leaks. Repair if any leak is detected.
2. Periodically lubricate all moving points of the Jack.
3. The Hydraulic Ram (13) should be kept clean, free
of dirt and water, and protected from corrosion.
4. OIL REPLACEMENT:
a. Place Jack in an upright position.
b. Completely lower the Ram (13).
c. Remove the Filler Plug (16) and keep it clean.
d. Fill Reservoir (15) with high-quality hydraulic
jack oil to the lower rim of the fill hole.
e. Purge air from the hydraulic system as
previously described on page 4.
f. Top off with more hydraulic oil.
g. Replace Filler Plug (16).