Isuzu NHR 4J Series Workshop Manual page 339

6D2 – 6 STARTING SYSTEM
3. Yoke Assembly
Separate the yoke from the solenoid switch.
4. Yoke Cover
6D2-6-1.tif
5. Brush and Brush Holder
Remove (pull out) the brushes and the brush holder from
the armature with a pair of long-nose pliers.
6. Armature
7. Drive Side Housing
6D2-6-2.tif