Technical data

Brush and Brush Rig
1. Check the length of the brush. A brush worn down to the service limit line should be replaced.
Description Standard value Service limit
Length of brush 18 mm (.709 in.) 8 mm (.315 in.)
Load of brush spring 3.04 to 4.22 N 2.06 N (.5 lbs.)
(.7 to 1 lbs.) ---
2. Check the brush spring pressure to make sure the brush moves smoothly in the brush holder.
Reassembly
Reverse the disassembly procedure but pay special attention to reassembly of the following.
1. Install seals in front and rear of the front bearing
as shown.
2. To install the rotor assembly in the rear bracket, push
the brushes into the brush holder, insert a wire to hold
them in raised position, and then install the rotor.
NOTE: After installation, remove the wire.