Sears 9 50524 User Manual

FLOOR JACK  
9
Model 50524 - 2-1/4 Ton Capacity  
• Safety  
• Operation  
• Maintenance  
• Parts  
BEFORE using this product, read this manual  
!
and follow all its Safety and Operating  
instructions. Failure to do so may result in  
personal injury and/or property damage.  
Sears, Roebuck and Co., Hoffman Estates, IL 60179  
Printed in China  
!
!
WARNING  
WARNING  
• Study, understand, and follow all  
instructions with and on this device before  
operating this device.  
• 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.  
• This is a lifting device only. Immediately  
after lifting, support the vehicle with  
appropriately rated vehicle stands.  
To avoid crushing and related injuries:  
• NEVER work on, under or around a load  
• Never work on, under, or around a load  
supported only by a jack.  
supported only by this device.  
• ALWAYS use appropriately rated jack  
stands.  
• Do not move or dolly the vehicle while on  
the jack.  
• No alterations shall be made to this  
product.  
! SAFETY MESSAGE !  
Be sure all tools and personnel are clear  
before lowering load. No alterations shall  
be made to this device. Only attachments  
and/or adapters supplied by the  
manufacturer shall be used. Lift only on  
areas of the vehicle as specified by the  
vehicle manufacturer.  
• Only attachments and/or adapters  
supplied by the manufacturer shall be  
used. Contact 1-888-332-6419 for more  
information.  
• Failure to heed product markings or  
warnings may result in personal injury or  
property damage.  
NOTE: Jack stands are rated per pair  
unless otherwise noted.  
Use 1 matched pair per vehicle only.  
!
ADVERTENCIA  
Leer, comprender, y seguir las  
instrucciónes antes de utilizar el aparato.  
• El manual de instrucciónes y la  
información de seguridad deben estar  
comunicado en lengua del operador  
antes del uso.  
• No seguir estas indicaciónes puede  
causar daños personales o materiales.  
3
TO ASSEMBLE THE CARRY HANDLE ONTO THE JACK  
Snap the carry handle onto the nuts of jack’s middle axle. (see Fig. 1)  
Carry handle  
1
2
Nut of  
middle axle  
FIG. 1  
OPERATION  
KNOW YOUR JACK  
BEFORE USE  
• Read the operator's manual completely  
and familiarize yourself thoroughly with the  
product, its components and recognize the  
hazards associated with its use.  
Compare Fig. 2 illustration with your jack  
BEFORE operation to become familiar with  
the location of various jack components.  
oil filler plug  
(not shown,  
• Occasionally during shipment and/or  
handling air can get trapped in the system,  
which can interfere with the jacks lifting  
performance.  
on reservoir)  
cover plate  
(remove to  
access oil  
filler plug)  
saddle  
lifting arm  
• It is recommended to cycle the jack a few  
times without applying load:  
handle  
carry  
• Engage release valve with notched end  
of jack handle. Close release valve by  
turning the jack handle clockwise until  
tight.  
front  
sleeve  
handle  
wheel  
release  
valve  
• Insert jack handle into handle sleeve.  
Pump the handle until the jack saddle  
reaches its maximum height.  
• Engage release valve with notched end  
of jack handle. Open release valve by  
turning jack handle counterclockwise, but  
no more than 1/2 full turn.Allow the saddle  
to reach its lowest position.  
frame  
castor  
base  
engage release  
• Repeat the above procedure a few times.  
valve with this end  
SPECIFICATjIaOckNhSandle  
To release air from the hydraulic system:  
• Engage release valve with notched end  
of jack handle. Open the release valve  
FIG. 2  
b y t u r n i n g t h e j a c k h a n d l e  
counterclockwise, but never by more than  
1/2 full turn.  
Rated Capacity: 2-1/4 Ton/4500 Lbs  
Jack Dimensions: 21” x 8-1/2” x 5-1/2”  
Lifting Range: 5-1/2” ~ 15” (Approx.)  
(140mm - 381mm)  
• Remove the oil filler plug from the cylinder.  
(see Fig. 3)  
• Insert jack handle into handle sleeve.  
Rapidly pump jack handle through several  
Oil Capacity: 90 cc ± 5 cc  
full strokes.  
• Reinstall the oil filler plug into the cylinder  
Net Weight: 27.1 lbs. (Approx.)  
again and jack is now ready to use.  
4
• Continue to pump the jack handle to lift the  
vehicle to the desired height. After lifting,  
support the load with appropriately rated  
jack stands BEFORE working on the  
vehicle.  
OPERATING PRINCIPLES  
• 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.  
Rated capacity of jack stands is per  
!
pair, it is NOT the sum of individual  
capacities unless specifically noted to the  
contrary by the jack stand manufacturer.  
Do Not exceed rated 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 1 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.  
• 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.)  
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.  
LOWERING THE JACK  
!
To avoid crushing injuries and property  
• Opening the release valve allows oil to flow  
back into the reservoir. This releases  
damage: Keep hands and feet clear of work  
area when lowering load.  
hydraulic pressure on the ram, which  
results in lowering the saddle.  
• Raise load high enough to clear the jack  
stands, then carefully remove jack stands  
(always used in pairs).  
HOW TO USE YOUR JACK  
• With notched end of jack handle, SLOWLY  
open the release valve by turning the  
handle counterclockwise, but never more  
than 1/2 full turn. If the load fails to lower:  
RAISING THE JACK  
• With notched end of the jack handlle (see  
Fig. 2) close release valve by turning the  
handle clockwise.  
a. Use another jack to raise the vehicle  
high enough to reinstall jack stands.  
b. Remove the affected jack and then the  
stands.  
• Chock the vehicle’s wheel with appropriate  
devices to ensure lifting stability.  
• Refer to the vehicle manufacturer’s owners  
manual to locate approved lifting points on  
the vehicle. Position jack so that the saddle  
is centered under the load at an appropriate  
lift point.  
c. Using the other jack, lower the load by  
turning the operating handle counter-  
clockwise, but no more than 1/2 full turn.  
• After removing jack from under the load,  
push saddle down to reduce ram exposure  
to rust and contamination.  
• Insert jack handle into handle sleeve. 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.  
5
MAINTAINING OIL LEVEL  
• When not in use, ALWAYS store jack with  
saddle lowered all the way down.  
Important: When adding or replacing oil,  
ALWAYS use a good grade Hydraulic Jack  
oil. We recommend Mobil DTE13M or  
equivalent. 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.  
ANNUAL INSPECTION  
To ensure that it is in optimum condition,  
annual inspection of the jack at a Sears  
Service Center is recommended.  
REPLACING OIL  
ADDING OIL  
To drain oil, remove cover plate and oil filler  
plug and open release valve. Turn jack over  
and drain old oil out through the oil filler  
hole and into a suitable container.  
• Position the jack on level ground and fully  
lower the saddle. (Ram will be all the way  
in). Remove oil filler plug located under  
cover plate (see Fig. 3).  
Note: Dispose of hydraulic oil in accordance  
with local regulations.  
• 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.  
• Refill with new oil through the oil filler hole.  
DO NOT allow dirt or foreign material to  
enter the hydraulic system when filling.  
• Re-install oil filler plug and cover plate. The  
jack is now ready to use.  
• After refilling, remove any air from the  
hydraulic system by opening the release  
LUBRICATION  
valve and rapidly pumping the jack handle  
several times.  
• Add lubricating oil to all moving parts as  
• Re-install oil filler plug and cover plate and  
the jack is ready to use.  
needed.  
PREVENTING RUST  
• Check ram and pump plunger (see Fig. 3)  
every few months for any signs of rust or  
corrosion. Clean as needed by wiping with  
an oily cloth.  
Oil Filler Plug  
Proper Oil Level  
Ram all the way in  
Release Valve  
Plunger Down  
FIG. 3  
6
PROBLEM-SOLVING HINTS  
Corrective Action  
Symptom  
Possible Causes  
• Release valve not tightly closed  
• Ensure release valve is tightly closed  
Jack does not lift load  
• 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  
• Replace power unit assembly  
• Drain fluid to proper level  
Jack does not lower after • Oil reservoir overfilled  
unloading  
• Clean and lubricate moving parts  
• Linkages binding  
• Fluid level low  
• Ensure proper fluid level  
• Air trapped in system  
Poor lift performance  
• With ram fully retracted, open release  
valve, pump handle several times to  
expel trapped air  
Does not lift to full  
• Fluid level low  
• Ensure proper fluid level  
MODEeLxteNnUsioMn BER: 50524  
PARTS  
The Model Number and Serial Number are found on the lifting arm and handle sleeve  
respectively. Always mention the Model Number and Serial Number when requesting service  
or repair parts for your jack.  
INDIVIDUAL PARTSARE NOT AVAILABLE FOR REPLACEMENT ASSEMBLIES  
Key  
Description  
Saddle  
1
7
2
6
1
2
Power Unit Assembly  
3
Handle Assembly  
Front Wheel Assembly  
Rear Castor Assembly  
Cover Plate  
4
5
3
6
7
Oil Filler Plug  
4
––  
Operators Manual  
Warning Label  
5
FIG. 4  
For after sale support and assistance:  
Call 1-888-332-6419, 8:00 AM - 4:45 PM CST., Monday - Friday  
7
Get it fixed, at your home or ours!  
Your Home  
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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.  
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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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