JLG 120-SXJ ANSI Service Manual - Manual (Page 83)

SECTION 5 - HYDRAULICS
3121105 – JLG Lift – 5-11
2. Lift Down Relief.
a. Monitor pressure gauge at quick-connect (G
port) on main valve.
b. Bottom out Lift Down function.
c. Loosen nut at lift down relief and adjust pressure
to 1500 psi (103 bar) using an Allen wrench.
Tighten nut.
3. Swing Relief.
a. Monitor pressure gauge at quick-connect (G
port) on main valve.
b. Ensure turntable lock is engaged.
c. Bottom out Swing Right function.
d. Loosen nut at swing right relief and adjust pres-
sure to 1200 psi (83 bar) using an Allen wrench.
Tighten nut.
e. Bottom out Swing Left function.
f. Loosen nut at swing left relief and adjust pres-
sure to 1200 psi (83 bar) using an Allen wrench.
Tighten nut.
4. Extend-A-Reach Relief.
a. Monitor pressure gauge at quick-connect on
main valve at Port 8.
b. Bottom out Extend-A-Reach Up function.
c. Loosen nut at extend-a-reach up relief and
adjust pressure to 3000 psi (207 bar) using an
Allen wrench. Tighten nut.
d. Monitor pressure gauge at quick-connect on
main valve at Port 7.
e. Bottom out Extend-A-Reach Down function.
f. Loosen nut at extend-a-reach down relief and
adjust pressure to 1400 psi (97 bar) using an
Allen wrench. Tighten nut.
5. Platform Rotate Relief.
a. Monitor pressure gauge at quick-connect on
main valve.
b. Bottom out Rotate Right function.
c. Loosen nut on rotate right relief and adjust pres-
sure to 2500 psi (172 bar). Tighten nut.
d. Bottom out Rotate Left function.
e. Loosen nut on rotate left relief and adjust pres-
sure to 2500 psi (172 bar). Tighten nut.
6. Platform Level Relief.
a. Monitor pressure gauge at quick-connect on
main valve at Port 11.
b. Bottom out Platform Level Down function.
c. Loosen nut on platform level down relief and
adjust to 2200 psi (152 bar).Tighten nut.
d. Monitor pressure gauge at quick-connect on
main valve at Port 12.
e. Bottom out Platform Level Up function.
f. Loosen nut on platform level up relief and adjust
to 2500 psi (172 bar). Tighten nut.
Frame Mounted Valves
Back out steer adjustments to start setting pressures.
1. Rear Steer.
a. Steer Select Switch should be in crab or com-
pound steer.
b. Operate steer switch right or left to set rear steer
pressure.
c. Pressure should be 2850 psi (197 bar).
STEER ADJUSTMENT
ADJUSTMENT