Snap-On EEBR312A Owner's Manual
EEBR312A
Brake Lathe
Installation Instructions
Operating Instructions
Safety Instructions
Maintenance Instructions
READ these instructions before placing unit in
service. KEEP these and other materials delivered
with the unit in a binder near the machine for
ease of reference by supervisors and operators.
2 • Snap-on
READ ALL INSTRUCTIONS
When using your garage equipment, basic safety precau-
tions should always be followed, including the following:
1. Keep guards in place and in working order.
2. Remove adjusting keys and wrenches from the tool
before turning it on. Make this a habit.
3. Keep work area clean and well lighted. Cluttered areas
and benches invite accidents.
4.To reduce the risk of fire, do not operate equipment in the
vicinity of open containers of flammable liquids (gasoline).
5. Adequate ventilation should be provided when working
on operating internal combustion engines.
6. Care must be taken as burns can occur from touching
hot parts.
7. Do not operate equipment with a damaged cord or if the
equipment has been dropped or damaged—until it has been
examined by a qualified serviceman.
8. If an extension cord is necessary, a cord with a current
rating equal to or more than that of the equipment should be
used. Cords rated for less current than the equipment may
overheat. Care should be taken to arrange the cord so that it
will not be tripped over or pulled.
9. To reduce the risk of electric shock, do not use on wet
surfaces or expose to rain.
10. Keep children away. All bystanders should be kept completely away from the work area.
11. Make the workshop kid-proof. Use padlocks and master switches, and remove starter keys.
12. Don’t force a tool. It will do the job better and safer at
the rate for which it was designed.
13. Use the right tool. Don’t force a tool or an attachment
to do a job for which it was not designed.
14. Dress properly. Keep hair, loose clothing, neckties,
shop rags, jewelry, fingers, and all parts of body away from
moving parts. Non-slip footwear is recommended.
15. ALWAYS WEAR SAFETY GLASSES. Everyday eyeglasses only have impact resistant lenses, they are NOT
safety glasses. Safety glasses, goggles, or a face shield will
help protect the operator from injury. Use a face shield and
dust mask during dusty operations.
16. Secure the work properly to the unit for setup and tool
bit positioning. Do not attempt to hold a drum or rotor steady
on the arbor with your hands. Both hands must be free to
operate unit.
17. Don’t overreach. Keep proper footing and balance at all
times when lathe is in operation or when working around the
unit.
18. Maintain tools with care. Keep tools sharp and clean for
best and safest performance. Follow instructions for lubricating and changing accessories.
19. Remove power from the unit and disconnect tools
before servicing and when changing accessories such as
blades, bits, cutters, etc. Follow lock-out and tag-out procedures as required.
20. Avoid unintentional starting. Make sure the switch is in
the OFF (O) position before plugging the machine in or performing any maintenance or service work.
21. Use of improper accessories may cause risk of injury to
operator or bystanders. Use only as described in this manual.
Use only manufacturer’s recommended attachments.
22. Never stand or lean on a lathe. Serious injury could
occur if the lathe is tipped or if the cutting tool is unintentionally contacted.
23. Check damaged parts carefully. Before further use of
the lathe, a guard or other part that is damaged should be
carefully checked. Immediately replace all damaged, missing,
or non-functional parts. Check for alignment of moving parts,
binding of moving parts, breakage of parts, mounting, and any
other conditions that may affect operation. Guards and other
parts that are damaged should be properly repaired or
replaced before lathe is used again.
24. Always feed the work into a blade or cutter and against
the direction of rotation. Cutters and tool bits are designed to
cut from the inside of a drum or rotor to the outer edge. Do
not attempt to cut from the outside edge in to the center.
25. Never leave tools running unattended. Turn the power
off. Don’t leave the tool until it comes to a complete stop.
26. Never use compressed air to blow the tool clean. Chips
and dust may be driven between machined parts and into
bearings, causing undue wear. They may also contact persons
in the area causing personal injury.
27. Operate the lathe in the proper environment. The lathe
incorporates parts such as snap switches and power receptacles which tend to produce arcs or sparks. Therefore, when
located in a garage,the unit should be in a room or enclosure
provided for the purpose, or should be at least 18” or more
above the floor to minimize the risk of igniting fuel vapors.
Before operating the lathe, review the warning information on the lathe and the cautions, warnings and dangers in this manual. Also review the following general safety instructions. Failure to follow safety instructions could result in personal injury to
operator or bystanders and damage to the lathe or personal property.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Snap-on • 3
Brake Lathes
Table of Contents
Important Safety Instructions . . . . . . . . . . .2
Safety Notices and Decals . . . . . . . . . . . . . .4
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Cautions and Dangers . . . . . . . . . . . . . . . . . . . . . .4
Owner’s Responsibility . . . . . . . . . . . . . . . . .5
Definitions of Hazard Levels . . . . . . . . . . . . .5
Before You Begin . . . . . . . . . . . . . . . . . . . . . .6
Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Electrical Requirements . . . . . . . . . . . . . . . . . . . . .6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Operating Specifications . . . . . . . . . . . . . . . . . . . .7
Principle Operating Parts . . . . . . . . . . . . . . . . . . . .8
Arbor Installation . . . . . . . . . . . . . . . . . . . . . . . . . .9
Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Basic Operation . . . . . . . . . . . . . . . . . . . . . . .9
Spindle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Spindle Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Spindle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Spindle Speed Adjustment . . . . . . . . . . . . . . . . . .9
Cross Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10
V-Belt Tension and Adjustment . . . . . . . . . . . . . .10
Basic Operation of Handwheels . . . . . . . . . . . . .10
Reconditioning Brake Drums . . . . . . . . . . .11
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Mounting Drums . . . . . . . . . . . . . . . . . . . . . . .11-13
Typical Drum Mounting Configurations . . . . . . . .12
Reconditioning Disc Brake Rotors . . . . . . .14
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Rotor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . .14
Model 6950 Twin Cutter . . . . . . . . . . . . . . . . . . .14
Typical Rotor Mounting Configurations . . . . . . . .15
Set Up and Reconditioning Rotors . . . . . . . . .16-18
Maintenance and Service . . . . . . . . . . .18-19
Oiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-19
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Care of Arbors and Adapters . . . . . . . . . . . . . . . .19
Shear Gear Replacement . . . . . . . . . . . . . . . . . . .19
4 • Snap-on
Brake Lathes
Safety Notices and
Decals
For your safety, and the safety of others, read and
understand all of the safety notices and decals included here and on the unit.
Read entire manual
before installing,
operating, or servicing this equipment.
Proper maintenance
and inspection is
necessary for safe
operation.
Do not operate a
damaged lathe.
Failure to follow danger, warning, and caution instructions may lead to serious personal injury or death to operator or
bystander or damage to property. Do not
operate this machine until you read and
understand all the dangers, warnings and
cautions in this manual.
Warnings
This equipment incorporates parts such as snap
switches and power receptacles which tend to produce arcs or sparks. Therefore, when located in a service facility, the unit should be in a room or enclosure
provided for the purpose, or should be at least 18” or
more above floor to minimize the risk of igniting fuel
vapors.
Cautions and Dangers
1. Eye and face protection requirements:
“Protective eye and face equipment is required
to be used where there is a reasonable
probability of injury that can be prevented by use
of such equipment.” OSHA 1910.133 (a).
Protective goggles, safety glasses, or a face
shield must be provided by the purchaser/user
and worn by the operator of the equipment.
Make sure all eye and face safety precautions are
followed by the operator(s). Keep bystanders out
of the area.
2. Do not remove any safety equipment, belt
guards, or shortcut controls or operations.
3. Make sure drums and rotors are properly and
squarely mounted before starting lathe, and that
all parts are secure.
4. Do not wear loose clothing, jewelry, or gloves
when operating or working around a lathe.
5. Do not overload the lathe. Read and understand
the lathe specifications. Overloading is poor
machine tool practice, shortens the life of the
lathe, and could cause a failure resulting in
personal injury.
WARNING
WARNING
For Your Own Safety Read Instruction
Manual Before Operating Lathe
• Wear eye protection.
• Do not wear gloves, necktie, or loose clothing.
• Tighten all locks before operating.
• Rotate workpiece before installing on faceplate.
• Risk of injury due to accidential starting.
• Do not use in an area where children may be
present.
941134
Snap-on • 5
Brake Lathes
Owner’s Responsibility
To maintain machine and user safety, the responsibility of the owner is to read and follow these instructions:
• Follow all installation instructions.
• Make sure installation conforms to all applicable
Local, State, and Federal Codes, Rules, and
Regulations; such as State and Federal OSHA
Regulations and Electrical Codes.
• Carefully check the unit for correct initial function.
• Read and follow the safety instructions. Keep
them readily available for machine operators.
• Make certain all operators are properly trained,
know how to safely and correctly operate the
unit, and are properly supervised.
• Allow unit operation only with all parts in place
and operating safely.
• Carefully inspect the unit on a regular basis and
perform all maintenance as required.
• Service and maintain the unit only with
authorized or approved replacement parts.
• Keep all instructions permanently with the unit
and all decals/labels/notices on the unit clean and
visible.
• Do not override safety features.
Definitions of Hazard
Levels
Identify the hazard levels used in this manual with
the following definitions and signal words:
DANGER
Watch for this symbol:
It Means: Immediate hazards, which will result in
severe personal injury or death.
WARNING
Watch for this symbol:
It Means: Hazards or unsafe practices, which could
result in severe personal injury or death.
CAUTION
Watch for this symbol:
It Means: Hazards or unsafe practices, which may
result in minor personal injury or product or property
damage.
Watch for this symbol! It means BE ALERT! Your
safety, or the safety of others, is involved!
DANGER
WARNING
CAUTION
6 • Snap-on
Brake Lathes
Before You Begin
Receiving
The shipment should be thoroughly inspected as
soon as it is received. The signed bill of lading is
acknowledgement by the carrier of receipt in good
condition of shipment covered by our invoice.
If any of the goods called for on this bill of lading are
shorted or damaged, do not accept them until the carrier makes a notation on the freight bill of the shorted
or damaged goods. Do this for your own protection.
NOTIFY THE CARRIER AT ONCE if any hidden loss or
damage is discovered after receipt and request the
carrier to make an inspection. If the carrier will not do
so, prepare a signed statement to the effect that you
have notified the carrier (on a specific date) and that
the carrier has failed to comply with your request.
IT IS DIFFICULT TO COLLECT FOR LOSS OR DAMAGE AFTER YOU HAVE GIVEN THE CARRIER A
CLEAR RECEIPT.
File your claim with the carrier promptly. Support
your claim with copies of the bill of lading, freight bill,
invoice, and photographs, if available.
Electrical Requirements
The lathe must be properly grounded to protect the
operator from shock. The lathe is equipped with an
approved 3-conductor cord and a 3-prong grounding
type plug to fit the proper grounding-type receptacle.
Should an extension cord be required, use 3-conductor cords with 3-prong grounding plug and 3-prong
grounding receptacle properly rated to handle this
electrical power tool only. Do not modify a cord or plug
to match a receptacle; have a qualified electrician
install an appropriate outlet to match the lathe requirements. Repair or replace any worn or damaged power
cords immediately.
Verify that the lathe plug and grounding-type receptacle match as shown in Figure 1.
Figure 1 - Power Cord Plug and Receptacle Types
Installation
1. Assemble bench according to the instructions
provided. Tighten all fasteners securely.
2. After assembly, the bench should be leveled and
may be bolted down with 3⁄8 or 7⁄16 inch bolts or lag
screws.
3. Unbolt the lathe from the shipping pallet. Lift the
lathe onto the bench.
4. Bolt the lathe to the bench with the hardware
provided. Tighten fasteners securely.
5. Remove any packing materials and protective
wrapping from the lathe and components.
6. Make sure lathe is turned off. Plug lathe into a
properly installed and grounded outlet that matches
the lathe plug.
7. Remove the shipping plug, insert the oil dipstick,
and check oil level. The lathe is shipped with the correct amount and type of oil. Add oil as necessary to
reach the correct mark on the dipstick. Use only EP80-90 gear oil. Oil level should be checked often.
Figure 2 – Check oil level
8. Clear the area and turn lathe on. Check for proper
operation (motor and spindle rotation).
Preparation for Use
1. Inspect all adapters and accessories for burrs,
nicks, or other damage.
2. Clean accessories with a vaporizing solvent.
3. Apply a light film of oil to all adapters to protect
their machined surfaces from rust. Refer to the maintenance section for more information.
115 VAC 220 VAC
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