Solve challenging task or how to repair their own hands the screwdriver ?

battery Check and

speed control several standard faults can be identified, which are inherent in cheaper instruments:

• The device does not turn on;
• When the audible squeaks and whistles;
• not work speed control and reverse;
• After turning off the start button, the engine continues to operate;
• tool for a few seconds and sticks;
• strong beat of the chuck.

not included on the screwdriver may CHETRA reasons: broken power button, the motor brushes wear or burn-anchor, battery failure.Check the battery voltage measurement is made at the terminals.The operating voltage is indicated on the case and, if it is not correct, it is necessary to change during the scan.Also check the charger can be a problem in it.

Note!Standard battery voltage is 12 or 18 volts.

Scan speed control is necessary multimeter prozvanivaya chain.It should be noted that the button is fully pressed in it begins the closure of contacts and the motor voltage is applied directly.By the button connected two wires from the battery, which further are connected to the engine.For continuity probe is attached to the input lead and turn to the other.At the same time the button is pressed all the way.The device shows there is or there is no contact.If there is no contact, the button changes.

Replacement

button Repair button, you can do yourself, but you need to know how to disassemble screwdriver.It should be understood that many details simply fall out when opening the case.To avoid this dismantling of the screwdriver is carefully marked with the location of all the contacts and springs.If darkly colored contacts, they should be cleaned with sandpaper.After assembly, made repeated measurements and, if there was contact, the button is put in place.Note that if after replacing the engine earned only when you press a button, and with a smooth turnover is not regulated, the reason for failure in the circuit adjustment.In this case, you must replace the entire button.

If there is no reverse, replace the reversible switch or repair it.For this purpose screwdriver understands, it is important to comply with the above rules.Contacts are checked, and if they are deformed or burned, replace the reverse.If the reverse button is assembled in the body start button, then the whole system changed entirely.If the button is released, the engine is running on, you should check the regulator transistor speed controller.

Tip!Before gathering screwdriver check all the terminals and contacts, clean them, it will be useful for the operation of the instrument.

repair screwdriver with their hands

If all of these steps have not identified the cause of failure, then checks the condition of the motor brushes.To do this, turn off the engine of the button and check the multimer.If there is no low resistance, it is likely worn brushes, but also may break the anchor.If the anchor is blown, the engine is changing a whole, but if the reason brushes, the modifications made screwdriver and the engine.On some engines, you can make replacement brushes without disassembling the body, and some need to separate the back cover.

Note!When the whistle and squeaks can drip oil on the sleeve, but this is only a temporary measure that will solve the problem for a short while.

With long hours of work with heavy loads may occur bending drive shaft, which is manifested in a strong heartbeat at work.In addition, can wear the shaft bearings or bearing sleeve.If the damage is limited to the sleeve or the bearing, it is possible to replace only those elements, but when the shaft bending is necessary to change the whole system.