JLG 120-SXJ Service Manual - Manual (Page 80)

SECTION 5 - HYDRAULICS
5-10 – JLG Lift – 3121810
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 103 bar (1500 psi) 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 83 bar (1200 psi) using an Allen wrench.
Tighten nut.
e. Bottom out Swing Left function.
f. Loosen nut at swing left relief and adjust pres-
sure to 83 bar (1200 psi) using an Allen wrench.
Tighten nut.
4. Jib Relief.
a. Monitor pressure gauge at quick-connect on
main valve at Port 8.
b. Bottom out Jib Up function.
c. Loosen nut at jib up relief and adjust pressure to
207 bar (3000 psi) using an Allen wrench.
Tighten nut.
d. Monitor pressure gauge at quick-connect on
main valve at Port 7.
e. Bottom out Jib Down function.
f. Loosen nut at jib down relief and adjust pressure
to 97 bar (1400 psi) 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 172 bar (2500 psi). Tighten nut.
d. Bottom out Rotate Left function.
e. Loosen nut on rotate left relief and adjust pres-
sure to 172 bar (2500 psi). 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 152 bar (2200 psi).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 172 bar (2500 psi). Tighten nut.
Frame Mounted Valves
Frame Mounted Valves
NOTE: Steer/Axle Valve is located under front frame shield
on axle.
Back out steer adjustments to start setting pressures.
1. Rear Steer.
NOTE: Rear Steer valve is located under the center of the
frame.
STEER ADJUSTMENT
ADJUSTMENT