940 L4-2320cc 2.3L DOHC VIN 89 B234F FI (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