Bosch 4000 table saw

[Joe]

My Bosch 4000 table saw's motor is making very loud noise, what part do I need to change??? Field, ball bearing, or armature??? please help.....

[Mark]

A loud noise is usually caused by bad bearings. However you will need to do a little investigating. There are bearings on both the arbor shaft and on the motor armature. You will need to first remove the armature so you can test the bearings on the armature independent from the ones on the arbor.

Hope this points you in the right direction!

-Mark