940 L4-2320cc 2.3L DOHC VIN 89 B234F FI (1991)
Make sure that carbon brushes sit correctly. Test positive brushes holders, making sure that they do not short or arc to ground. Replace worn or corroded
springs. If necessary use a spring balance to test spring force.
K19 Replacement of carbon brushes
Replace brushes if they are less than 8.5 mm (0.334 in) in length (new brushes are 16.5 mm = 0.65 in).
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crush old brushes
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clean cable shoes with a file
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insert wire into new brush and spread out wires to form a better joint.