... ,BUW-SH2,DH-6,DH-10,DM-13,DW-24,DW-30,LUh3b,LU-DN,LUh-DH,2,3LUh ... must be quartered. Quartering is setting the brush holders at equal distance around the commutator. For a 4 pole ... obtain optimum machine performance, the brush must be set at the machine electrical neutral. If the unit is off ... give the size of opening. HITCACHI carbon brush,HITACHI 99-006,carbon brush for power tools,power tools carbon ...