940 L4-2320cc 2.3L DOHC VIN 89 B234F FI (1991)
Test commutator for arcing to ground.
J10 Commutator
Brush path should be smooth and free from dirt and oil. Machine commutator if burnt or out-of-round.
Min diameter = 33.5 mm (1.3 in).
Max. radial throw = 0.05 mm (0.002 in).
J11 Undercutting