JLG 18RS Service Manual - Manual (Page 126)

SECTION 5 - HYDRAULICS
5-36 – JLG Lift – 3121284
Pressure Limiter Adjustments
Lock motor output shaft to adjust the pressure limiter setting.
Lock the vehicle’s brakes or rigidly fix the work function so it
cannot rotate.
NOTE: Ensure charge pressure is properly set before checking
pressure limiter.
NOTE: If you change pressure limiter settings, you must also
change the HPRV valve to maintain proper PL function.
1. Install 600 bar [10,000 psi] pressure gauges in the high
pressure gauge ports (MA and MB). Install a 50 bar [1000
psi] pressure gauge in the charge pressure gauge port
(M3).
Figure 5-38. Charge Pressure Adjustment
Figure 5-39. Pressure Limiter Adjustment