MAC TOOLS JB12 Instructions for use

Capacity
12 Ton
20 Ton
Model Number
JB12
JB20
Hydraulic
Bottle Jacks
Operating Instructions & Parts Manual
JB12-M0_022014
Mac Tools
505 N. Cleveland Ave. Suite 200
Westerville, OH 43082
a division of Stanley Black & Decker Printed in China
US Patent No. 5,946,912

SAFETY AND GENERAL INFORMATION
Save these instructions. For your safety, read, understand, and follow the information provided with and on this
device before using. The owner and/or operator shall have an understanding of the device, its operating characteristics
and safety operating instructions before operating the equipment. The owner and/or operator shall be aware that use
and repair of this product may require special skills and knowledge. Instructions and safety information shall be read
to and discussed with the operator in the operator's native language, making sure that the operator comprehends
their contents, before use of this equipment is authorized. If any doubt exists as to the safe and proper use of this
device, remove from service immediately.
Inspect before each use. Do not use if abnormal conditions such as cracked welds, damaged, loose or missing
parts are noted. Any equipment that appears damaged in any way, is found to be worn, or operates abnormally shall
be removed from service until repaired. If the equipment has been or is suspected to have been subjected to an
abnormal load or shock, immediately discontinue use until inspected by a factory authorized repair facility (contact
distributor or manufacturer for list of authorized repair facilities). It is recommended that an annual inspection be
made by an authorized repair facility. Labels and Operator's Manuals are available from the manufacturer.
PRODUCT DESCRIPTION
Mac Tools Hydraulic Bottle Jacks are designed to lift, not support, rated capacity loads consisting of one end of a
vehicle. Immediately after lifting, the load must be supported by a pair of appropriately rated jack stands.
WARNING: Never use hydraulic jack as a stand alone device. After lifting, immediately support the lifted load
with a pair of appropriately rated jack stands.
SPECIFICATIONS
Model Capacity Min. Height Max. Height Hydraulic
Lifting Ext. Screw Base Size (L x W)
JB12 12 Ton 9-5/8" 18-5/8" 6" 3" 5-3/8" x 6"
JB20 20 Ton 9-7/8" 18-7/8" 6" 3" 6-3/8" x 5-7/8"
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Figure 1 - JB12 & JB20 Components
Oil Filler Plug
(not shown)
Release Valve
Extension Screw
Saddle
Ram
Pivot Points
Reservoir
Carry Handle
Handle Socket
Handle Assembly
!

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To avoid crushing and related injuries:
• Never work on, under or around a load supported
only by hydraulic jack.
• Always use adequately rated jack stands.
• Chock each unlifted tire in both directions.
• Do not use this device to lift, level, lower, support
nor move a house, mobile home, travel trailer,
camper or any building structure.
• Be alert and sober when using this product.
Do not operate under the inuence of drugs or
alcohol.
!WARNING
X
!WARNING
• Study, understand, and follow all instructions
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 load with appropriate means.
• Lift only on areas of the vehicle as specied by
the vehicle manufacturer.
• No alterations shall be made to this product.
• Only attachments and/or adapters supplied by
the manufacturer shall be used.
• Failure to heed these markings may result in
personal injury and/or property damage.
PREPARATION
Before Use
1. Before using this product, read the operator's manual completely and familiarize yourself thoroughly with the
product, its components and recognize the hazards associated with its use.
2. Verify that the product and application are compatible.
3. Assemble handle, ensure spring clips align with slots.
4. To familiarize yourself with basic operation, use the notched end of provided Pump Handle to engage and turn
the Release Valve:
a. Clockwise until rm resistance is felt to further turning. This is the ‘CLOSED’ Release Valve position used to
raise the ram plunger.
b. Counter-clockwise, but no more than 1/2 turn from the closed position. This is the ‘OPEN’ Release Valve
position used to lower the Ram Plunger.
5. With Ram Plunger fully retracted and release valve closed, pump the operating handle. If Ram Plunger responds
immediately, jack is ready for use. If jack does not respond, follow Bleeding/Venting Trapped Air instruction below.
6. Check that the pump operates smoothly and that the Extension Screw will thread up/down easily before putting
into service. Replace worn or damaged parts and assemblies with Mac Tools authorized replacement parts only.
Bleeding/Venting Trapped Air
With the Release Valve in the OPEN position (step 4b above) and with Ram Plunger fully lowered, locate and remove
the Oil Filler Plug/Screw. Insert the Pump Handle into the Handle Sleeve; then pump 6 to 8 full strokes. This will help
release any pressurized air which may be trapped within the reservoir. Oil level should be even with the bottom of
the oil ller hole. Reinstall the Oil Filler Plug/Screw.

OPERATION
Raising the Ram Plunger
1. Assemble Pump Handle, align spring clips with corresponding slots.
2. Place vehicle in park, with emergency brake on and wheels securely chocked to prevent inadvertent vehicle
movement.
3. Locate and close Release Valve by turning Pump Handle clockwise until rm resistance is felt.
4. Verify lift point, center jack Saddle under lift point.
5. Insert Pump Handle into Handle Sleeve and pump to contact lift point. To lift, continue pumping until load reaches
desired height.
6. Transfer the lifted load to a pair of appropriately rated jack stands.
NOTICE: Use Pump Handle provided by jack manufacturer. The handle provided with this jack will safely engage
the release valve and operate the Handle Sleeve. If handle is worn, operates abnormally, or will not positively engage
the release valve, STOP, discontinue use of the jack until a factory replacement handle can be acquired.
Lowering
WARNING: Clear all tools and personnel before lowering load. Open release valve slowly. The further handle is
turned counter-clockwise, the faster the load will descend. Maintain control of the load at all times.
1. Raise load high enough to clear the jack stands, then carefully remove jack stands.
2. Slowly turn the Pump Handle counter-clockwise, but no more than 1/2 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. Use the functioning jack to lower the vehicle.
3. After removing jack from under the load, push Ram Plunger and Handle Sleeve down to reduce exposure to rust
and contamination.
MAINTENANCE
NOTICE: Use only good quality hydraulic jack oil. Avoid mixing different types of uid and NEVER use brake uid,
turbine oil, transmission uid, motor oil or glycerin. Improper uid can cause premature failure of the jack and the
potential for sudden and immediate loss of load. Premium hydraulic jack oil is recommended.
Adding oil
1. With Ram Plunger fully lowered and pump piston fully depressed, set jack in its upright, level position. Remove
Oil Filler Plug/Screw.
2. Fill with oil until just below the rim of the oil ller hole. Reinstall the Oil Filler Plug/Screw.
Changing oil
For best performance and longest life, replace the complete uid supply at least once per year.
1. With Ram Plunger fully lowered and pump piston fully depressed, remove the Oil Filler Plug/Screw.
2. Lay the jack on its side and drain the uid into a suitable container.
NOTICE: Dispose of hydraulic oil in accordance with local environmental regulations.
3. Fill with oil until just below the rim of oil ller hole.
4. Perform Bleeding/Venting Trapped Air procedure (page 3). Reinstall the Oil Filler Plug/Screw.
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!

Lubrication
A periodic coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and assure that
pump assemblies move freely.
Cleaning
Periodically check the pump piston and Ram Plunger for signs of rust or corrosion. Clean as needed and wipe with
an oily cloth.
NOTICE: Do not use sandpaper or abrasive material on ram or pump piston surfaces.
Storage
When not in use, store the jack with pump piston and Ram Plunger fully retracted and air supply disconnected.
TROUBLESHOOTING
Symptom Possible Causes Corrective Action
Jack will not lift load
• Release Valve not tightly closed
• Overload condition
• Ensure Release Valve tightly
closed
•Remedy overload condition
Jack will lift, but not maintain
pressure
•Release Valve not tightly closed
•Hydraulic unit malfunction
•Ensure Release Valve tightly
closed
•Contact Mac Tools Tech. Service
Jack will not lower after
unloading
• Reservoir overlled • Ensure load is removed, then drain
uid to proper level
Poor lift performance
• Fluid level low
•Air trapped in system
• Ensure proper uid level
•Follow Bleeding/Venting Trapped
Air procedure on page 3
Will not lift to full extension • Fluid level low • Ensure proper uid level
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Figure 2 - Model JB12 & JB20 Replacement Parts Illustration
REPLACEMENT PARTS
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.
Call or write for current pricing: Mac Tools Inc. (a division of Stanley Black & Decker)
505 N. Cleveland Ave. Suite 200, Westerville, OH 43082. Tel: 1-800-MAC-TOOL (622-8665)
Replacement Parts for Models: JB12 & JB20
Item Part No. Description Qty.
1 F36100-0001 Oil Filler Plug 1
2 B21207-0002 Handle Assembly 1
3 B80200-0001 Release Valve 1
- B21207-0001 Repair Kit for JB12 -
- B22007-0001 Repair Kit for JB20 -
- JB12-L0 Label(s) for model JB12 (not shown) -
- JB20-L0 Label(s) for model JB12 (not shown) -
- JB12-M0 Manual
3
2
1
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ONE YEAR LIMITED WARRANTY
For a period of one (1) year from date of purchase, Mac Tools (a division of Stanley Black & Decker) will repair
or replace, at its option, without charge, any of its products which fails due to a defect in material or workmanship
under normal usage. This limited warranty is a consumer’s exclusive remedy.
Performance of any obligation under this warranty may be obtained by returning the warranted product, freight
prepaid, to Mac Tools (a division of Stanley Black & Decker) Warranty Service Department, 505 N.
Cleveland Ave., Suite 200 Westerville, OH 43082.
Except where such limitations and exclusions are specically prohibited by applicable law, (1) THE CONSUMER’S
SOLE AND EXCLUSIVE REMEDY SHALL BE THE REPAIR OR REPLACEMENT OF DEFECTIVE PRODUCTS
AS DESCRIBED ABOVE. (2) Mac Tools (a division of Stanley Black & Decker) SHALL NOT BE LIABLE FOR ANY
CONSEQUENTIAL OR INCIDENTAL DAMAGE OR LOSS WHATSOEVER. (3) ANY IMPLIED WARRANTIES,
INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE, SHALL BE LIMITED TO ONE YEAR, OTHERWISE THE REPAIR, REPLACEMENT
OR REFUND AS PROVIDED UNDER THIS EXPRESS LIMITED WARRANTY IS THE EXCLUSIVE REMEDY OF
THE CONSUMER, AND IS PROVIDED IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED. (4) ANY
MODIFICATION, ALTERATION, ABUSE, UNAUTHORIZED SERVICE OR ORNAMENTAL DESIGN VOIDS THIS
WARRANTY AND IS NOT COVERED BY THIS WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply
to you. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty gives you specic legal rights, and you may also
have other rights which vary from state to state.
Mac Tools
505 N. Cleveland Ave. Suite 200 Westerville, OH 43082. U.S.A.
a division of Stanley Black & Decker
7

Mac Tools
505 N. Cleveland Ave. Suite 200 Westerville, OH 43082. U.S.A.
a division of Stanley Black & Decker