To extend the life of a Marley Geareducer, regular servicing is essential:
: Excessive vibration can indicate misalignment or impending bearing failure.
$6,500 for a rebuild versus $14,000 for a new gearbox. You save ~50%, but it’s still not cheap.
Input and output shaft seals (typically lip seals) dry out and crack due to the cooling tower environment. Always replace these.