TUBE AS 4637962 - Caterpillar

Problem List
The starting motor does not turn or the starting motor turns too slowly.
The armature turns, but the pinion does not engage the flywheel ring gear.
The armature turns. The pinion engages the ring gear, but the engine does not crank.
The starting motor continues to run after the key start switch has been released.
The pinion does not disengage after the engine starts to run. Problems
The starting motor does not turn or the starting motor turns too slowly.
Probable Causes:
The battery is discharged: The battery needs to be charged.
The battery is damaged: The battery needs to be replaced.
The battery cable terminals are loose. The terminals are corroded or the terminals have a poor ground connection: Tighten the cable terminals. Clean the terminals and the battery posts. Apply anti-acid grease to the battery posts.
The solenoid contacts are burnt or worn out: Replace the solenoid (switch).
The solenoid windings are disconnected or the solenoid windings are short circuited: Replace the solenoid (switch).
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