940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Test commutator for arcing to ground.
K10 Commutator
Brush path should be smooth and free from dirt and oil. Machine commutator if burnt or out-of-round:
Min. diameter = 42.5 mm (1.673 in).
Max. radial throw = 0.05 mm (0.002 in).
K11 Undercutting