Bit Binding
A high rotational force occurs when a bit binds. If the bit binds, the tool will be forced in the opposite direction of the bit rotation (See Fig. 12 - 14). Bits may bind if they are misaligned or when they are breaking through a hole. Wood boring bits can also bind if they run into nails or knots. Be pre- pared for bit binding situations.
To reduce the chance of bit binding:
•Use sharp bits. Sharp bits are less likely to bind when drilling.
•Use the proper bit for the job. There are bits that are designed for specific pur- poses.
•Use caution when drilling pitchy, knotty, wet or warped material or when drill- ing in material that may contain nails.
Typical Bracing Methods
Fig. 12 | Forward rotation |
Reaction
Bracing against the floor
Fig. 13
Forward rotation
Reaction
Bracing against your leg
Fig. 14 | Reaction | |
| ||
Reverse rotation | Forward rotation | |
| Bracing against a stud | |
1.Unplug tool and rest it on its side with the cartridge facing up. Loosen the brush holder screw in the cartridge and pull cartridge out.
Fig. 16
2. | Remove worn brushes. If the brushes |
| should fall into the tool, be sure to shake |
| them out before reinserting the car- |
| tridge. Discard BOTH brushes. Brushes |
| should always be replaced in sets. |
3. | A set of spare brushes is provided in |
| the cartridge. Remove the brushes from |
| storage compartment. |
4. | Position new brushes with the flat sil- |
| ver end facing into the brush holder. |
| Push cartridge into the tool and press |
| evenly on top and bottom of the car- |
| tridge to align terminals for proper con- |
| nection. |
5. | Tighten the brush holder screw gently. |
before further use. Do not use a damaged tool. Tag damaged tools “DO NOT USE” until repaired (see “Repairs”).
Under normal conditions, relubrication is not necessary until the motor brushes need to be replaced. After six months to one year, depending on use, return your tool to the nearest MILWAUKEE service facility for the following:
•Lubrication
•Brush inspection and replacement
•Mechanical inspection and cleaning (gears, spindles, bearings, housing, etc.)
•Electrical inspection (switch, cord, armature, etc.)
•Testing to assure proper mechanical and electrical operation
WARNING!
To reduce the risk of injury, electric shock and damage to the tool, never immerse your tool in liquid or allow a liquid to flow inside the tool.
Cleaning
Clean dust and debris from vents. Keep
MAINTENANCE
If the head of Screw is damaged, use |
the replacement screw provided in the |
the tool handles clean, dry and free of oil or grease. Use only mild soap and a damp
WARNING!
To reduce the risk of injury, always unplug your tool before performing any maintenance. Never disassemble the tool or try to do any rewiring on the tool's electrical system. Contact a MILWAUKEE service facility for ALL repairs.
Replacing Brushes (Fig. 15 & 16)
MILWAUKEE Magnum Drills have an ex- clusive Brush Cartridge System. The tool will not start when the brushes are worn to 1/8", preventing expensive damage to the armature. New brushes are provided in the Cartridge for fast changes any- where.
Fig. 15 | Extra brushes |
Brushes
Brush
holder
Brush holder screw
Replacement screw
cartridge. |
WARNING!
Never use a metal screw as a brush holder screw.
Maintaining Tools
Keep your tool in good repair by adopting a regular maintenance program. Before use, examine the general condition of your tool. Inspect guards, switches, tool cord set and extension cord for damage. Check for loose screws, misalignment, binding of moving parts, improper mounting, broken parts and any other condition that may af- fect its safe operation. If abnormal noise or vibration occurs, turn the tool off imme- diately and have the problem corrected
cloth to clean your tool since certain clean- ing agents and solvents are harmful to plas- tics and other insulated parts. Some of these include: gasoline, turpentine, lacquer thinner, paint thinner, chlorinated cleaning solvents, ammonia and household deter- gents containing ammonia. Never use flam- mable or combustible solvents around tools.
Repairs
If your tool is damaged, return the entire tool to the nearest service center.
12 | 13 |