Operators Manual
Model No. 50244
3 TON CAPACITY
ALUMINUM FLOOR JACK
• Safety
• Assembly
• Operation
• Maintenance
• Parts
CAUTION: Before using this product, read
this manual and follow all its Safety Rules
and Operating instructions.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Printed in China
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SAFETY INSTRUCTIONS
• To stabilize the oil, it is recommended to cycle
the jack a few times without applying load:
!
WARNING
• Study, understand, and follow all
instructions with and on this device
before operating this device.
• Close release valve by turning the jack
handle clockwise until tight.
• Pump the handle until the jack saddle
reaches its maximum height.
• Do not exceed rated capacity.
• Use only on hard, level surfaces capable
of sustaining rated capacity loads.
• Lift only on areas of the vehicle as
specified by the vehicle manufacturer.
• Open release valve by turning jack handle
counter-clockwise, but no more than 1/2
full turn at a time.Allow the saddle to reach
its lowest position.
• This is a lifting device only. Immediately
after lifting, support the vehicle with
appropriately rated vehicle stands.
• Never work on, under, or around a load
supported only by this device.
• Repeat the above procedure a few times.
• To release air from the hydraulic system:
• Open the release valve by turning the
jack handle counterclockwise, but never
by more than 1/2 full turn at a time.
• Do not move or dolly the vehicle while
on the jack.
• Remove the oil filler screw from the
cylinder. (see Fig. 4)
• No alterations shall be made to this
product.
• Rapidly pump jack handle through several
full strokes.
• Only attachments and/or adapters
supplied by the manufacturer shall be
•
Reinstall the oil filler screw into the cylinder
again and jack is now ready to use.
used. Contact 1-888-332-6419 for more
information.
• Failure to heed product markings or
warnings may result in personal injury
or property damage.
BEFORE EACH USE
Make a visual inspection before each use
of the floor jack by checking for abnormal
conditions, such as cracked welds, leaks and
damaged, loose, or missing parts.
CAUTION BEFORE USING
DAMAGE TO JACK
Occasionally during shipment and/or
handling the hydraulic oil can become
unstable or air can get trapped in the
system, both of which can interfere with the
jacks lifting performance.
If you think jack has been subjected to an
abnormal load or shock, have it inspected for
damage at a Sears or other qualified service
center before using it again.
ASSEMBLY
TO ASSEMBLE THE TWO PIECE
HANDLE
TO ASSEMBLE THE HANDLE
INTO THE SOCKET
•
Locate the spring pin on bottom end of upper
handle and the spring pin receiver on the
upper end of lower handle. (see Fig. 1).
•
•
Pull out and hold the spring knob.
Insert the assembled handle into the
handle socket, until it is firmly seated.
• Align the spring pin with the spring pin
receiver. Connect the two handle pieces
together by pressing the spring pin and
insert until the spring pin is locked in the
spring pin receiver.
• Release the spring knob; the handle is now
fixed in position.
Assembled Handle
Handle Socket
Spring Pin
Spring Knob
Spring Pin Receiver
Upper Handle
Lower Handle
FIG. 1
FIG. 2
3
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OPERATION
KNOW YOUR JACK
OPERATING PRINCIPLES
Compare Fig. 3 illustration with your jack
BEFORE operation to become familiar with
the location of various jack components.
• With release valve closed, an upward
stroke of the jack handle draws oil from
the reservoir tank into the plunger cavity.
Hydraulic pressure holds a valve closed,
which keeps the oil in the plunger cavity.
• A downward stroke of the jack handle
releases oil into the cylinder, which forces
the ram out. This raises the saddle. (NOTE:
To avoid damage to the cylinder if the load
exceeds the rated capacity of the jack,
oil is automatically released back into
the reservoir through the safety overload
valve.)
Jack Handle
• Whentheramreachesmaximumextension,
oil is bypassed back into the reservoir to
prevent an over-extended ram stroke and
possible damage to the jack.
Oil Filler Screw (located
beneath Tool Tray)
Saddle Pad
• 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.
Lifting Arm
Saddle
Handle
Socket
HOW TO USE YOUR JACK
RAISING THE JACK
• Chock the vehicle wheels with appropriate
devices to prevent vehicle from moving and
to ensure lifting stability.
Front Wheel
• Close the release valve by turning the jack
handle clockwise until tight. (see Fig. 3)
Spring Loaded Rear Castor
• Refer to the vehicle manufacturer’s owner’s
manual to locate approved lifting points on
the vehicle. Position jack so that the saddle
(see Fig. 3) is centered under the load at
an appropriate lift point.
FIG. 3
SPECIFICATIONS
Rated Capacity: 3 Ton / 6000 LBS
Jack Dimensions: 28 1/2” x 14” x 6 5/16”
Lifting Range: 3 7/8” - 18 1/2 ” (99 - 470 mm)
Oil Capacity: 265 c.c.
• Pump jack handle until saddle ALMOST
contacts the vehicle. Check to see that the
saddle is centered and will contact the load
lifting point firmly.
• Continue to pump the jack handle to lift
the vehicle to the desired height. After
lifting, immediately support the load with
appropriately rated vehicle support stands
BEFORE working on the vehicle.
Net Weight: 56.6 lbs
LOWERING THE JACK
• SLOWLY open the release valve by
turning the handle counterclockwise,
but never more than 1/2 full turn at a
time.
4
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MAINTENANCE
MAINTAINING OIL LEVEL
ANNUAL INSPECTION
Important: When adding or replacing oil,
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 improper fluid can cause serious
internal damage to your jack. We recommend
Mobil DTE13M or equivalent.
To ensure that it is in optimum condition,
annual inspection of the jack at a Sears
Service Center is recommended.
REPLACING OIL
• To drain oil, remove oil filler screw and open
release valve. Turn jack over and drain old
oil out through the oil filler hole.
Note: Dispose of hydraulic oil in accordance
with local regulations.
• Refill with new oil through the oil filler hole.
DO NOT allow dirt or foreign material to
enter the hydraulic system when filling.
• After refilling, remove any air from the
hydraulic system by opening the release
valve and rapidly pumping the jack handle
several times.
ADDING OIL
• Position the jack on level ground and
fully lower the saddle. (Ram will be all the
way in). Remove oil filler screw from the
reservoir (see Fig. 3 & 4).
• Oil should be filled to the level of about
3/16” above the inner cylinder as seen
from the oil filler hole. If low, add oil as
needed.
• Re-install oil filler screw. The jack is now
ready to use.
• Re-install oil filler screw and the jack is
ready to use.
LUBRICATION
• Add lubricating oil to all moving parts as
needed.
PREVENTING RUST
• Check ram and pump piston (see Fig. 4)
every few months for any signs of rust or
corrosion. Clean as needed by wiping with
an oily cloth.
• When not in use, ALWAYS store jack with
saddle lowered all the way down.
Oil Filler Screw
Proper Oil Level
Release Valve
Oil Filler Hole
Reservoir
Ram all the way in
Pump Piston
Cylinder
FIG. 4
5
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PARTS
MODEL NUMBER: 50244
Not all components of the jack are replacement items, but are illustrated as a convenient
reference of location and position in the assembly sequence. When ordering parts, give
Model number, Serial Number and parts description. The Model Number and Serial Number
are found on the lifting arm and handle socket respectively.
7
3
Key Description
1
2
3
4
5
6
7
8
Saddle Assembly
8
Power Unit Assembly
Handle Assembly
Front Wheel Assembly
Handle Socket Assembly
Rear Castor Assembly
Tool Tray
5
2
1
Oil Filler Screw
-- Operators Manual
-- Warning Label
6
4
FIG. 5
TROUBLESHOOTING
PROBLEM-SOLVING HINTS
Symptom
Possible Causes
Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Ensure release valve is tightly closed
• Overloaded - too much weight on jack • Reduce weight on jack
Jack bleeds off
• Release valve not tightly closed • Ensure release valve is tightly closed
(starts to lower) after lift • Hydraulic unit malfunction
Jack will not lower after • Oil reservoir overfilled
• Replace power unit assembly
• Drain fluid to proper level
unloading
• Linkages binding
• Clean and lubricate moving parts
Poor lift performance
• Fluid level low
• Ensure proper fluid level
• Air trapped in system
• With ram fully retracted, open
release valve and remove oil filler
screw, pump handle several times to
expel trapped air. Re-install oil filler
screw.
Will not lift to full
extension
• Fluid level low
• Ensure proper fluid level
For after sale support and assistance:
Call 1-888-332-6419 8:00 AM - 4:45 PM CST., Monday - Friday
6
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or maintenance agreement (Canada) on a product serviced by Sears:
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(1-800-533-6937)
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®
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