CRAFTSMAN 50156 User Manual

Operators Manual  
FLOOR JACK  
9
Model 50156 - 4 Ton Capacity  
• Safety  
• Assembly  
• Operation  
• Maintenanc
• 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  
U.S. Patent:  
5,755,099,5,946,912,6,199,379B1  
Printed in China  
rev 04/07  
SAFETY INSTRUCTIONS  
!
!
WARNING  
WARNING  
To avoid crushing and  
• 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 surface.  
• This is a lifting device only. Immediately  
after lifting, support the vehicle with  
appropriately rated vehicle stands.  
related injuries:  
N E V E R w o r k o n ,  
under or around a load  
supported only by jack.  
ALWAYSuseadequately  
rated jack stands.  
• Do not move or dolly the vehicle while  
on the jack.  
• Failure to heed product markings or  
warnings may result in personal injury  
or property damage.  
! SAFETY MESSAGE !  
Be sure all tools and personnel are clear  
before lowering load. No alterations  
shall be made to this product. 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.  
!
ADVERTENCIA  
Leer, comprender, y seguir las instrucciones  
antes de utilizar el aparato. El manual  
de instrucciones y la informacion de  
seguridad deben estar comunicado en  
lengua del operador antes del uso. No  
seguir estas indicaciones puede causar  
danos personales o materiales.  
NOTE: Jack stands are rated per pair  
unless otherwise noted.  
Use 1 matched pair per vehicle only.  
ASSEMBLY  
TO ASSEMBLE THE TWO PIECE  
HANDLE  
Spring Pin  
Spring Pin Receiver  
Upper Handle  
Locate the spring pin on bottom end of upper  
handle and the spring pin receiver on the  
upper end of lower handle. (Fig. 1).  
Lower Handle  
FIG. 1  
• 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.  
1
Handle Socket  
TO ASSEMBLE THE HANDLE INTO  
THE SOCKET  
2
1. Press and hold the handle socket to loosen  
the lock pin (Fig. 2).  
2. Pull out the lock pin, then release handle  
socket slowly.  
Lock Pin (to hold the  
position of Handle  
Socket in packaging)  
FIG. 2  
!
Caution: Handle socket is spring loaded.  
Beware of pinching on fingers during  
removal of lock pin.  
Assembled  
Handle  
cket  
3. Pull and hold the spring knob (Fig. 3).  
4. Insert the assembled handle into the  
socket, until it is firmly seated.  
Spring Knob  
5. Release spring knob to secure the handle  
in position.  
FIG. 3  
3
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. 4 illustration with your jack  
BEFORE operation to become familiar with  
the location of various jack components.  
• Occasionally during shipping and handling,  
the hydraulic oil in jack may become  
unstable or air may trapped in the system,  
both of which can interfere with the jacks  
lifting performance.  
Jack Handle  
To stabilize the hydraulic oil, it is  
recommended to cycle the jack a few times  
without applying load:  
• Close release valve by turning the jack  
handle clockwise until tight.  
• Pump the handle until the jack saddle  
reaches its maximum height.  
• 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.  
• Repeat the above procedure a few  
times.  
To release air from the hydraulic system:  
(inside Handle  
• Open the release valve by turning the  
jack handle counterclockwise, but never  
by more than 1/2 full turn at a time.  
Socket, engage  
Rear Castor  
with Jack Handle)  
FIG. 4  
• Remove the oil filler screw from the  
cylinder (Fig. 4).  
• Rapidly pump jack handle through  
several full strokes.  
Reinstall the oil filler screw into the  
cylinder again and jack is now ready to  
use.  
BEFORE EACH USE  
SPECIFICATIONS  
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.  
Rated Capacity: 4 Ton / 8000 Lbs  
Jack Dimensions: 27-1/4” x 13-1/4” x 6-  
7/16”  
Lifting Range: 5-3/4” ~ 19-13/16” (Approx.)  
(145 - 504 mm)  
DAMAGE TO JACK  
Oil Capacity: 235 c.c.  
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.  
Net Weight: 89.1 Lbs (Approx.)  
4
OPERATION  
LOWERING THE JACK  
OPERATING PRINCIPLES  
• SLOWLY open the release valve by  
turning the handle counterclockwise,  
but never more than 1/2 full turn at a  
time.  
• 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.)  
• Whentheramreachesmaximumextension,  
oil is bypassed back into the reservoir to  
prevent an over-extended ram stroke and  
possible damage to the jack.  
!
Warning: 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 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.  
• 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.  
LOWERING THE JACK  
!
Warning: To avoid crushing injuries and  
property damage: Keep hands and feet clear  
of work area when lowering load.  
Note: The release valve must be closed  
for the handle to remain upright. When the  
release valve is opened, the handle may  
lower to the floor.  
• Raise load high enough to clear the jack  
stands, then carefully remove jack stands  
(always used in pairs).  
SLOWLY open the release valve by turning  
the handle counterclockwise, but never  
more than 1/2 full turn. If the load fails to  
lower:  
HOW TO USE YOUR JACK  
RAISING THE JACK  
• Use another jack to raise the vehicle high  
enough to reinstall jack stands.  
• Remove the affected jack and then the  
stands  
• 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.  
• Chock the vehicle wheels with appropriate  
devices to prevent vehicle from moving and  
to ensure lifting stability.  
• Close the release valve by turning the jack  
handle clockwise until tight (Fig. 4).  
• Refer to the vehicle manufacturer’s owner’s  
manual to locate approved lifting points on  
the vehicle. Position jack so that the saddle  
(Fig. 4) is centered under the load at an  
appropriate lift point.  
• 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.  
5
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 plug from the reservoir  
(see Fig. 4 & 5).  
• 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 plug. 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 plunger (Fig. 5)  
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.  
FIG. 5  
6
TROUBLESHOOTING  
PROBLEM-SOLVING HINTS  
Symptom  
Possible Causes  
Corrective Action  
• Ensure release valve is tightly closed  
• Overloaded - too much weight on jack • Reduce weight on jack  
• Release valve not tightly closed • Ensure release valve is tightly closed  
Jack will not lift load  
• Release valve not tightly closed  
Jack bleeds off  
(starts to lower) after lift • Hydraulic unit malfunction  
• Replace power unit assembly  
Jack will not lower after • Oil reservoir overfilled  
• 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  
PARTS  
MODEL NUMBER: 50156  
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.  
Key Description  
1
2
3
4
5
6
7
8
Saddle Assembly  
Power Unit Assembly  
Handle Assembly  
Front Wheel Assembly  
Handle Socket Assembly  
Rear Castor Assembly  
Tool Tray  
3
5
Oil Filler Screw  
-- Operators Manual  
-- Warning Label  
6
FIG. 6  
For after sale support and assistance:  
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419  
7
Get it fixed, at your home or ours!  
Your Home  
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For the replacement parts, accessories and  
owner’s manuals that you need to do-it-yourself.  
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and items like garage door openers and water heaters.  
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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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