Drill tool what should we care?
Hand drill due to heat dissipation, long-term use of internal dust, dust will make the gears and bearings (sleeve) oil on wear of mixed metamorphic sucks, especially alternative use more. To protect the rotation of the drill accuracy,drill edm reduced bearing (sleeve) wear and tear and had a big gap, therefore need to be kept clean and grease lubrication, because the hand drill is one's own.
Method
Loosen the drill out a few self tapping screw or screw.
Flat on the half shell opened, see something inside it.
General structure of a new type of hand drill is a half-block of, that is, all mechanical and electrical components are installations on the other half of the shell.
Carefully remove the carbon brushes
Win drilling Chuck end
Then gently lift the motor rotor remove (do not touch the wound wire)
Rotor on the commutator of the Qing dynasty (that is in contact with brush), if it is too dirty or worn badly can be cleaned with metallographic sandpaper or Emery cloth and Polish with water sandpaper to bright
Rotors front and rear bearing and if it is can be wiped clean out the seal, if seal is broken should be replaced in a timely manner. Wipe clean spiral tooth before the rotor shaft
Wipe clean inside of a shell oil clear
Chuck drill helical gears and bearings at both ends of the rod (or sleeve) clear clean
Removing the stuff back, install rotor; then loaded helical gear of drill Chuck; loaded carbon brush, brush if less than 7-8 mm to be renewed in a timely manner. Carbon brushes to install press
Finally found a little "Mobil" or "shell" plus lubricating grease in the gears and bearings (bushings) between
After a check and correct of all the parts to be installed to cover the other half, tightening screws, hand-turning feeling without the block, you can power up try to go.
Is prohibited to remove the flashlight in a charged state drill!
Basic knowledge of electrical appliances to avoid hand-free!