Fault Phenomenon: Tadano crawler crane one side of the idler has significant gear oil seepage.

Troubleshooting Process:
– Checked oil seal: lip seal worn.
– Checked floating oil seal: floating oil seal failed.
– Replaced idler floating oil seal set.

Root Cause: The idler floating oil seal aged and wore out, losing its sealing function.

Required Parts: Floating oil seal set, gear oil.