Sears Companion 50181 User manual

Operators Manual
•Safety
•Operation
•Maintenance
•Parts
FLOOR JACK
Model 950181 - 2 Ton Capacity
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Visit our website: www.sears.com
Printed in China
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.
!

TABLE OF CONTENTS
Warranty .....P. 2
Save these instructions .....P. 2
Safety instructions .....P. 3
Operation .....P. 4 & P. 5
Maintenance .....P. 6
Troubleshooting .....P. 7
Parts .....P. 7
Service .....Back cover
WARRANTY
One Year Full Warranty on Companion Floor Jack
If within one year from date of purchase, this Companion 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
SAVE THESE INSTRUCTIONS
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 operators native language before use of this
product 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 been checked
by a Sears or other qualified service center. It is recommended that an annual inspection
be done by qualified personnel.
• Labels and Operators Manual are available from Sears (see PARTS section on page 7).
2

SAFETY INSTRUCTIONS
3
To avoid crushing and related injuries:
•NEVER work on, under or around a load
supported only by a jack.
•ALWAYS use appropriately rated jack
stands.
WARNING
!
•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.
ADVERTENCIA
!
•Study, understand, and follow all
instructions provided with and on this
device before use.
•Do not exceed rated capacity.
•Use only on hard, level surfaces.
•Lifting device only.
•Immediately after lifting, support the
vehicle with appropriately rated jack
stands.
•Do not move or dolly the vehicle while
on the jack.
•Failure to heed these markings may
result in personal injury and/or property
damage.
WARNING
!
! 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.
NOTE: Jack stands are rated per pair
unless otherwise noted.
Use 1 matched pair per vehicle only.

4
OPERATION
KNOW YOUR JACK
Compare Fig. 1 illustration with your jack
BEFORE operation to become familiar with
the location of various jack components.
FIG. 1
SPECIFICATIONS
Rated Capacity: 2 Ton/4000 Lbs
Jack Dimensions: 19-3/4” x 8-1/2” x 5-1/2”
Lifting Range: 5-1/2” ~ 14” (Approx.)
(140mm - 356mm)
Oil Capacity: 90 cc ±5 cc
Net Weight: 23.1 Lbs. (Approx.)
saddle
lifting arm
handle
sleeve
cover plate
(remove to
access oil
filler plug)
oil filler plug
(not shown,
on reservoir)
front
wheel
jack handle
release
valve
castor
engage release
valve with this end
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.
•Occasionally during shipment and/or
handling air can get trapped in the system,
which can interfere with the jacks lifting
performance.
•It is recommended to cycle the jack a few
times without applying load:
•Engage release valve with notched end
of jack handle. Close release valve by
turning the jack handle clockwise until
tight.
•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.
•Repeat the above procedure a few times.
•To release air from the hydraulic system:
•Engage release valve with notched end
of jack handle. Open the release valve
by turning the jack handle
counterclockwise, but never by more than
1/2 full turn.
•Remove the oil filler plug from the cylinder.
(see Fig. 2)
•Insert jack handle into handle sleeve.
Rapidly pump jack handle through several
full strokes.
•Reinstall the oil filler plug into the cylinder
again and jack is now ready to use.

OPERATION
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.
•Adownward 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.
•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’s wheels with appropriate
devices to prevent vehicle from moving and
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
(see Fig. 1) is centered under the load at
an appropriate lift point.
•With notched end of the jack handlle (see
Fig. 1) close release valve by turning the
handle clockwise.
•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.
•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.
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.
LOWERING THE JACK
To avoid crushing injuries and property
damage: Keep hands and feet clear of work
area when lowering load.
•Raise load high enough to clear the jack
stands, then carefully remove jack stands
(always used in pairs).
•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:
a. Use another jack to raise the vehicle
high enough to reinstall jack stands.
b. Remove the affected jack and then the
stands.
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.
!
!
5

6
MAINTENANCE
MAINTAINING OIL LEVEL
Important: Use only a good grade hydraulic
jack oil. Avoid mixing different types of fluid
and Never use brake fluid, turbine oil,
transmission fluid, motor oil or glycerin.
Improper fluid can cause failure of the jack
and the potential for sudden and immediate
loss of load. We recommend Mobil DTE13M
or equivalent.
ADDING OIL
•Position the jack on level ground and fully
lower the saddle. (Ram is all the way in).
Remove oil filler plug located under cover
plate (see Fig. 2).
•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 and cover plate. The
jack is now ready to use.
LUBRICATION
•Add lubricating oil to all moving parts as
needed.
PREVENTING RUST
•Check ram and pump plunger (see Fig. 2)
every few months for any signs of rust or
corrosion. Clean as needed by wiping with
an oily cloth.
FIG. 2
•When not in use, ALWAYS store jack with
saddle 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
For best performance and longest life,
replace the complete fluid supply at least
once per year.
•To drain oil, with saddle fully lowered,
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.
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.
•Re-install oil filler plug and cover plate and
the jack is ready to use.
Ram all the way in
Plunger Down
Release Valve
Oil Filler Plug
Proper Oil Level

7
TROUBLESHOOTING
PROBLEM-SOLVING HINTS
Symptom Possible Causes Corrective Actions
Jack does not lift load
Jack bleeds off
(starts to lower) after lift
Jack does not lower after
unloading
Poor lift performance
•Release valve not tightly closed
•Overloaded - too much weight on jack
• Release valve not tightly closed
• Hydraulic unit malfunction
•Oil reservoir overfilled
•Linkages binding
•Fluid level low
•Air trapped in system
•Ensure release valve is tightly closed
•Reduce weight on jack
•Ensure release valve is tightly closed
•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 levelDoes not lift to full
extension
FIG. 3
PARTS
•Fluid level low
MODEL NUMBER: 50181
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 PARTS ARE NOT AVAILABLE FOR REPLACEMENT
ASSEMBLIES
1
2
3
4
5
67
Key Description
1Saddle
2Power Unit Assembly
3Handle Assembly
4Front Wheel Assembly
5Rear Castor Assembly
6Cover Plate
7Oil Filler Plug
—Operators Manual
–– Warning Label
For after sale support and assistance:
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419

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