New Holland LS140 Workshop Manual page 577

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INSPECTION AND REPAIR

conventional test methods, and repair or replace as

Inspect the armature for internal short circuits with a

Replace the armature if a short circuit is indicated.

Inspect the armature for a short to ground using a

continuity tester.

Replace the armature if there is any continuity

between the commutator, 1, and armature shaft, 2, or

Check the armature for runout with a dial indicator

and V-blocks. If the commutator is rough, or more

than 0.05 mm (0.002") out of round, turn it down or

replace it. Undercut the separators between the

segments if the depth is less than 0.2 mm (0.01").

The distance, 1, from the commutator segment and

insulation should be between 0.5 mm and 0.8 mm

(0.02" and 0.03").

SECTION 55 - ELECTRICAL SYSTEM

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