Electrical System. Electric starter System

NOTE

Electric Starter System

ELECTRICAL SYSTEM 16-47

Armature Inspection

• Using the × 1 Q hand tester range, measure the resis­tance between any two commutator segments [A].

• If there is a high resistance or no reading (°°) between any two segments, a winding is open and the starter motor must be replaced.

• Using the highest hand tester range, measure the resis­tance between the segments and the shaft [B].

• If there is any reading at all, the armature has a short and the starter motor must be replaced.

OEven if the foregoing checks show the armature to be good, it may be defective in some manner not readily detectable with the hand tester. If all other starter motor and starter motor circuit components check good, but the starter motor still does not turn over or only turns over weakly, replace the starter motor with a new one.

Brush Plate Inspection

• Using the × 1 Q hand tester range, measure the resis­tance between the brush plate [A] and the negative brush [B].

• If there is not close to zero ohm, the brush plate has an open. Replace the brush plate assembly.

• Using the highest hand tester range, measure the re­sistance between the brush plate and the positive brush holder [C].

• If there is any reading at all, the brush holder has a short. Replace the brush plate assembly.

• Using the × 1 Q hand tester range, measure the resis­tance between the terminal bolt [D] and the positive brush [E].

• If there is a high resistance or no reading (°°), a lead is open and the brush plate must be replaced.

• Using the highest hand tester range, measure the resis­tance between the terminal bolt [A] and the end cover [B].

• If there is any reading at all, the insulation is faulty and the brush plate must be replaced. Replace the terminal assembly.

Starter Chain Guide Wear

• Visually inspect the rubber on the guide.

• If the rubber is cut or damaged in any way, replace the guide.

Дата добавления: 2014-12-23