JLG 1850SJ Operator Manual - Manual (Page 145)

SECTION 7 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
3121618 – JLG Lift – 7-13
2. Swing Gearbox
Lube Point(s) - Fill Plug
Capacity - 3 qt. (2.8 L)
Lube - GL-5
Interval - Check level every 150 hrs/Change every 1200
hours of operation. Fill to cover ring gear.
3. Wheel Drive Hub
Lube Point(s) - Level/Fill Plug
Capacity - 2.6 quarts (2.5 liters) ± 10%
Interval - Check level every 3 months or 150 hrs of operation;
change every 2 years or 1200 hours of operation