Craftsman Automobile Parts 50244 User Manual

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  
 
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
 
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
 
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
 
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
 
Get it fixed, at your home or ours!  
Your Home  
For repair – in your home – of all major brand appliances,  
lawn and garden equipment, or heating and cooling systems,  
no matter who made it, no matter who sold it!  
For the replacement parts, accessories and  
owner’s manuals that you need to do-it-yourself.  
For Sears professional installation of home appliances  
and items like garage door openers and water heaters.  
1-800-4-MY-HOME®  
Call anytime, day or night  
(1-800-469-4663)  
(U.S.A. and Canada)  
Our Home  
For repair of carry-in items like vacuums, lawn equipment,  
and electronics, call or go on-line for the location of your nearest  
Sears Parts and Repair Center.  
1-800-488-1222 Call anytime, day or night (U.S.A. only)  
To purchase a protection agreement (U.S.A.)  
or maintenance agreement (Canada) on a product serviced by Sears:  
1-800-827-6665 (U.S.A.)  
1-800-361-6665 (Canada)  
Para pedir servicio de reparación  
a domicilio, y para ordenar piezas:  
Au Canada pour service en français:  
1-800-LE-FOYERMC  
1-888-SU-HOGAR®  
(1-888-784-6427)  
(1-800-533-6937)  
© Sears Brands, LLC  
®
Registered Trademark / TM Trademark / SM Service Mark of Sears Brands, LLC  
Marca Registrada / TM Marca de Fábrica / SM Marca de Servicio de Sears Brands, LLC  
®
MC Marque de commerce / MD Marque déposée de Sears Brands, LLC  
 

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