JLG T500J Operator Manual - Manual (Page 117)

SECTION 7 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
3121197 – JLG Lift – 7-13
9. Trailer Jack
Capacity - As necessary
Lube - MPG & EO
Interval - As necessary
10. Surge Brake
Lube Point(s) - Fill Cap
Capacity - No more than 1/2
" (13 mm) from top of reservoir
Lube - DOT 3 or 4 Brake Fluid
Interval - Check before each tow. Flush the system yearly
or when system is known to be contaminated
OIL
GREASE