Tip & How-To about Festool Saws

This is a table saw with a little problem between after a 3 and 4 years of use

This is a tip for EVERYBODY who have a Festool CS 70 EB table saw , that just out of warranty or between 3 and 4 years old.
If there was nothing wrong then the table was not daily used or there was very much luck because of a little problem that is easy to repair. and thats by 1 thing that on factory was doing wrong by this beautiful quality product, and i have more then 25 tables customized on the motor because of the bad place of only one little ty-rap on the wires that give not only much tension but also trouble by the tremble of the saw function, first of all is the disassembling of the motor that should somebody who knows about powertool repair.
first its important you know what is the electric field of the motor you can see here


You see the ty-rap in the middle and the tension on the wires that has to much force on the contacts of the electric field


cut that little ty-rap carefully and look then


All of the wire contacts are because of tension at this moment of remove the ty-rap faultering it was already faultering if you work with the tool but you not see it in first time.


Thats the electric field unmounted from the motorhouse the contacts are now to see they are loose weak but ready to soldering.
look here behind







VID_20170223_123427.3gp


look the differences between the videos unsoldered and soldered wires .

It will take sometimes an hour with intermediate start and stop thats neccesary if the motor have on one side of the carbon brush a spark because of faultering fieldcontacts before the brush sparks on one or both brushes , i have done in some years 25 tables and it will build according to the ty-rap principle with that unlucky bad ty-rap but i have never bought a new armature but it must cleaned and the commutator should recover if not smooth flat and round by lathe or on other way and fully cleaned relubricate or replaced the ballbearings of the armature , the armature was sparking and it can take one hour motor that the commutator will be become smoot again if it was not a very bad sparking problem.



some extra video

VID_20170223_123717.3gp


VID_20170223_124240.3gp

the colors on the electric assembly



If you have a some older CS70EB and have removed the drive belts control them both good on little rips after long working hours.





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