JLG EC450AJ Operation & Safety Manual page 108

General Specifications and Operator Maintenance
4. Hydraulic Return Filter
• Lube Point(s) - Replaceable Element
• Interval - Change after first 50 hours and every 6 months or 300 hours
thereafter.
• Comments – Filter blockage indicator should be checked while operating a
high flow function (telescope in or tower boom down).
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BM001085B
EC450AJ, EC520AJ