Craftsman 50239 User manual

50239-0M
Operators Manual
(RRFTSMRH
2TON CAPACITY
FLOOR JACK Model No. 50239
CAUTION:
Before using this
product, read this
manual and follow
all its Safety Rules
and Operating
instructions.
•Safety
°Assembly
°Operation
° Maintenance
° Parts
Complies with ANSi standards for automotive lifting devices
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Visit our Craftsman website: www.sears.com/craftsman
US Patents:5,755,099 5,937,647 6,199,379B1
Part No. e2_:7
50239-0M
Printed in China

Warranty ..... R 2
Save these instructions ..... R 2
Safety instructions ..... R 3
Assembly ..... R 3
Operation ..... R 4
Maintenance ..... R 5
Troubleshooting .....R 6
Parts ..... R 6
Service .....Back page
One Year Full Warranty on Craftsman Floor Jack
If within one year from date of purchase, this Craftsman floor jack fails due to a defect in
material or workmanship, return it to the nearest Sears store in United States and Sears
will replace it, free of charge.
If this floor jack is used for commercial or rental purposes, this warranty will apply for only
30 days from date of purchase.
This warranty gives you specific legal rights, and you may also have other rights which vary
from state to state.
Sears Roebuck and Co., Dept° 817WA, Hoffman Estales, IL 60179
For your safety, read, understand, and follow, the information provided with and on this
jack.
• The owner and operator of this equipment shall have an understanding of this jack and
safe operating procedures before attempting to use. The owner and operator shall be
aware that use and repair of this product may require special skills and knowledge.
Instructions and safety information shall be conveyed in the operator's native language
before use of this jack is authorized. If any doubt exists as to the safe and proper use of
this jack, remove from service immediately.
° Inspect before each use. Do not use if broken, bent, cracked, or damaged parts
(including labels) are noted. Any jack that appears damaged in any way, operates
abnormally or is missing parts, shall be removed from service immediately.
° If the jack has been or suspected to have been subjected to a shock load (a load
dropped suddenly, unexpectedly upon it), immediately discontinue use until jack has
beenchecked by a factory authorized service center. It is recommended that an annual
inspection be done by qualified personnel.
°Labels and Owner's Manuals are available from manufacturer (see PARTS section on
page 6).
2

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.
• Never work on, under, or around a load
supported only by this device.
o Do not move or dolly the vehicle while on
the jack.
• No alterations shall be made to this
product.
° Failure to heed product markings or
warnings may result in personal injury or
property damage.
CAUTION BEFORE USING
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.
To stabilize the oil it is recommended to
cycle the jack a few times prior to putting
a load on it.
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 turns.
• Remove the air vent valve from the
cylinder. (see Fig. 4)
° Rapidly pump jack handle through
several full strokes.
° Replace the air vent valve into the
cylinder again and jack is now ready to
use.
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.
DAMAGE TO JACK
If you think jack has been subjected to an
abnormal load or shock, have it inspected
for damage at a Sears Service Center
before using it again.
TO ASSEMBLE THE TWO
PIECE HANDLE
1. Locate the Spring Pin on
bottom end of Upper
Handle and the Fixing
Hole on the top end of
Lower Handle. (See
Fig.l)
2. Align the Spring Pin with
the Fixing Hole. Connect
the two handle pieces
together by pressing the
Spring Pin and insert
until the Spring Pin is
locked in the Fixing
Hole.
,_p8 pnrlpper 1.
andle 2.
ng
J 3.
Fixing
Hole
FIG. 1
Lower
Handle
3
TO ASSEMBLE THE HANDLE INTO
THE SOCKET
Pull out and hold
the Spring Knob
(see Fig. 2)
Insert the
assembled handle
into the Socket, until
it is firmly seated.
Release the Spring
Knob, the handle is
then fixed in
position. /
FIG. 2 Spring Knob ._
Assembled
Handle
Handle
Socket

KNOW YOUR JACK
Compare Fig. 3 illustration with your jack
BEFORE operation to become familiar with
the location of various jack components.
Jack Handle
Handle Socket
Magnetic Tool Tray
remove to access Air Vent Valve) Saddle Pad
Air Vent Valve (located _addie
beneath Tool Tray)
Lifting Arm
-'rontRoller °
Rear Handle
Release Value
(inside Handle
Socket, engage
with Jack
Handle) Rear Castor
Side Handle
FIG. 3
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 the 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 it 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.
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.
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.
Close the release valve by turning the
jack handle clockwise until tight. (see Fig.
3)
• 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.
• 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, support the load with appropriately
rated vehicle support stands BEFORE
working on the vehicle.
LOWERING THE JACK
•SLOWLY open the release valve by
turning the handle counterclockwise.
Never more than 1/2 turns.
CAUTION: Keep hands and feet clear of
the jack hinge mechanism and ground
contact area when lowering the load!
SPECIFICATIONS
Rated Capacity: 2 Ton/4000 Lb
Jack Dimensions: 27-3/4" x 12-1/8" x 6-1/4"
Lifting Range: 3-3/4" - 18-1/2" (Approx.)
Oil Capacity: 150 c.c.
Net Weight: 42.5 Ibs. (Approx.)
4

MAINTAINING OIL LEVEL
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.
ADDING OIL
• Position the jack on level ground and fully
lower the saddle. (Ram will be all the way
in). Remove air vent valve located under
tool tray (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 air vent valve and tool tray. The
jack is now ready to use.
LUBRICATION
• Add lubricating oil to all moving parts as
needed.
• When not in use, ALWAYS store jack with
saddle and pump plunger lowered all the
way down.
ANNUAL INSPECTION
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 tool tray and air vent
valve and open release valve. Turn jack
over and drain old oil out through the oil
filler hole.
• Refill with new oil through the oil filler
hole. DO NOT allow dirt or other 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.
•Re-install air vent valve and tool tray and
the jack is ready to use.
PREVENTING RUST
Check ram and pump plunger (see Fig.
4) every few months for any signs of rust
or corrosion. Clean as needed by wiping
with an oily cloth.
Plunger
Release Valve Air Vent Valve
/Oil Filler Hole Cylinder
/I_ -- Ram all the way in
FIG. 4

Symptom
Jack will not lift load
Jack bleeds off
(starts to lower) after lift
Jack will not lower after
unloading
Poor lift performance
Wi'll'not lift to full
extension
PROBLEM-SOLVING HINTS
Possible Causes
• Release valve not tightly closed
• Overloaded - too much weight on jack
• Release valve not tightly closed
• Too much weight on jack
• Hydraulic unit malfunction
• Oil reservoir overfilled
• Linkages binding
• Fluid level low
• Air trapped in system
• Fluid level low
Corrective Action
• Ensure release valve is tightly
closed
• Reduce weight on jack
• Ensure release valve is tightly
closed
• Reduce weight on jack
i. Replace Power Unit Assembly
• Drain fluid to proper level
• Clean and lubricate moving parts
Ensure proper fluid level
With ram fully retracted, open release
valve, pump handle several times to
expel trapped air
•Ensure proper fluid level
MODEL NUMBER: 50239
The Model Number and Serial Number are
found on the lifting arm and handle socket
respectively. Always mention the Model
Number and Serial Number when
requesting service or repair parts for your
jack.
PARTS ARE ONLY AVAILABLE
IN ASSEMBLIES (except Saddle)
Key Parts NO.
1 6201
6202
6203
_,6204
_ "2_ 6205
6206__,_
-- 6207
Description '
• ',,
Saddle !
\ \
Power unit ass-@mblyx V
Handle Assembl_)]
Front Roller __J_ O(\_
Handle Socket _
Rear Castor Assembly (_ @
\O pc_,-at_ors manual °_ _
®
FIG. 5

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For the replacement parts, accessories and
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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)
www.sears.com
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 reparaci6n
a domicilio, y para ordenar piezas:
1-888-SU-HOGAR sM
(1-888-784-6427)
Au Canada pour service en frangais:
1-800-LE-FOYER Mc
(1-800-533-6937)
www, sears.ca
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