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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 com-

pletely away from the work area.

11.

Make the workshop kid-proof. Use padlocks and mas-

ter 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 eye-

glasses 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 lubricat-
ing 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 proce-
dures as required.

20.

Avoid unintentional starting. Make sure the switch is in

the OFF (O) position before plugging the machine in or per-
forming 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 unintention-
ally 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 recepta-
cles 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 man-

ual. 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

Summary of Contents for EEBR308A

Page 1: ...ating 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 ...

Page 2: ...harp and clean for best and safest performance Follow instructions for lubricat ing 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 proce dures as required 20 Avoid unintentional starting Make sure the switch is in the OFF O position before plugging the machine in ...

Page 3: ...of Cut Micrometer Dial 7 Arbor Installation 7 Rotor Mounting 7 Typical Rotor Mounting Configurations 8 Reconditioning Disc Brake Rotors 9 Set Up and Reconditioning Rotors 9 10 Reconditioning Brake Drums 11 Set Up and Machining 11 12 Typical Drum Mounting Configurations 13 Maintenance and Service Oiling 14 Cleaning 14 Care of Arbors and Adaptors 14 Spindle V belt Replacement 14 Spindle V belt Adjus...

Page 4: ...e 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 ...

Page 5: ...fully 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 de...

Page 6: ...ly 3 wire exten sion cords which have 3 prong grounding type plugs and 3 pole receptacles which accept the lathe s plug 230 volt lathes use a plug and outlet like those illus trated in Fig 3 Replace or repair damaged or worn cords immedi ately Figures 2 3 Operating Specifications Overall Lathe Height 14 25 in 362 mm Spindle to Floor 39 25 in 997 mm when mounted on bench Spindle Speed 125 RPM Rotor...

Page 7: ...he spindle of the lathe during final assembly and testing Witness marks have been etched onto the arbor and spindle for repeatable pre cise alignment The witness marks should be carefully aligned when installing the arbor A true running arbor is essential to professional quality brake drum and rotor recondition ing The drawbar which can be tightened or loosened at the rear of the spindle pulls the...

Page 8: ...r Nut Self Aligning Spacer Spacer Small Double Taper Adapter Large Double Taper Adapter Adapter Used as Spacer Typical Rotor Mounting Configurations Note Refer to instructions in adapter kit for mounting Hubless drums and rotors Figure 4 ...

Page 9: ...ed mounting hole provided Always wear safety glasses or a face shield Cutting or grinding on an exposed surface such as a rotor will produce flying chips and debris 4 Turn the rotor slide handwheel clockwise to posi tion the rotor slide about 1 2 away from the rotor silencer band vented rotors or 1 2 away from the edge of the rotor non vented rotors 5 Make sure that the tool bits clear the rotor s...

Page 10: ... the lathe ON 17 Turn both tool bit controls to the desired depth of cut and lock them in position by tightening the red lock knobs above the tool bits Note Either rough or finish cuts may be taken to resurface a rotor Generally finish cuts should be 0 004 0 10 mm to 0 006 0 15 mm per side Very shallow cuts of less than 0 004 10 mm per side tend to reduce tool bit life because the heat generated d...

Page 11: ...r edge of the drum moves closer to and then fur ther away from the tool bit while the drum is turning A very small amount of runout is permissible A large amount of runout indicates either a bent drum or an incorrect mounting To determine the cause of the runout a scratch cut procedure can be used as out lined in steps 7A 7B and 7C 7A Use the drum slide handwheel to move the tool bit about 1 2 in ...

Page 12: ...e bottom of the drum making a scraping sound Turn the drum slide handwheel clockwise until the scraping stops 14 Hold the end knob of the tool bar micrometer still and turn the inner dial to zero Note Drum depth of cut is determined by the con dition of the drum Ovality Flatness taper bellmouth barrel shape Scoring Diameter how close to the max machining limit Cuts may be 002 010 deep A rough cut ...

Page 13: ... the burrs Slip the hubless adapter onto the arbor followed by a spring the cone the drum and another hubless adapter Fill out the shaft with spacers as needed Note Refer to instructions in adapter kit for mount ing Hubless drums and rotors Key to MountingAdapters Cones and Related Parts A 1 Arbor B Flange Plate C Spring D Centering Cone E Rotor Drum or Flywheel F Flange Plate G Spacer s H Self Al...

Page 14: ...s and scratches correct any flaw with a fine stone If the damage cannot be corrected replace the adaptor Handle the adaptors and arbors with care and store them on individual hooks DO NOT throw them into a box The adaptors are designed for mounting drums and rotors only DO NOT misuse the adaptors Spindle V belt Replacement 1 Disconnect the lathe from the power source 2 Remove the two 2 screws secu...

Page 15: ...d dirty grease from all the working parts 4 Slip the spring into the bore of the tool bar Grease the sleeve with white grease and slip it into the bore of the tool bar 5 Slip the tool holder between the ears of the bor ing bar press the tool holder against a solid stop and insert the allen head cap screws Run the screws all the way in 7 Fully tighten one of the allen head cap screws then back the ...

Page 16: ... other than Seller s authorized representatives D improper or negligent use application operation care cleaning storage or handling E fire water wind lightning or other natural causes F adverse environmental conditions including without lim itation excessive heat moisture corrosive elements dust or other air contaminants radio frequency interference electric power failure power line voltages beyon...

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