Alternator - Bosch K1/N1 Caterpillar


Brush Length - Check

Usage:

426C 1CR



Illustration 1g03224656

Brush length check

(1) Brush

(X) Brush length

  • Measure the length of brushes (1) on the longest side. Brush length (X) should be as follows:

    New length:

    K1, 24V 2Y-4212 Charging Alternator Gp ... 10 mm (0.39 inch)

    K1, 24V 2Y-8310 Charging Alternator Gp ... 13 mm (0.51 inch)

    K1, 12V, and N1, 24V Charging Alternator Gp ... 17 mm (0.67 inch)

    Minimum length:

    K1, 24V Charging Alternator Gp ... 8 mm (0.31 inch)

    K1, 12V, and N1, 24V Charging Alternator Gp ... 11.5 mm (0.45 inch)

    1. If the brushes are worn near or below the minimum length, replace the brushes.
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