Hydraulic Oil Fill; Oil Check Procedure - JLG 1930ES Service Maintenance Manual

Table 4-1. Lift Pressure Settings
Model Lift Relief
1800 psi ± 50 psi
1930ES
(124 bar ± 3.5 bar)
1800 psi ± 50 psi
2030ES
(124 bar ± 3.5 bar)
1950 psi +/- 50 psi
2630ES
(134.5 bar ± 3.5 bar)
2000 psi +/- 50 psi
2646ES
(138 bar ± 3.5 bar)
2000 psi +/- 50 psi
3246ES
(138 bar ± 3.5 bar)
8. Remove pressure gauge and replace the plug into
the P port.
9. Replace the bronze washer with a new bronze
washer and large nut over the pressure setting
screw. Do not use old bronze washer. Using the old
bronze washer will cause leakage.
10. Torque the large nut to 160 in. lb (16 Nm).
Alternate Lift Pressure Setting Procedure:
1. Increase lift pressure to raise the platform and set
the safety prop.
2. Remove plug from port P (3) and install a pressure
gauge.
3. Remove the solenoid from the lift valve.
4. Set the pressure actuating lift function from the
ground or platform.
5. Remove the pressure gauge from port P (3) and
replace plug.
6. Replace the solenoid on the lift valve.

4.5 HYDRAULIC OIL FILL

NOTE: The hydraulic oil level should be checked every 6
months. Always check the oil level any time any
maintenance is performed that would effect the
hydraulic oil level.

Oil Check Procedure

1. With the scissor lift on a flat and level surface and
the platform empty, elevate machine and swing
safety prop out of it's stowed position.
2. Continue to elevate the platform until the fill plug,
located on the right side of the tank attached to the
lift cylinder, is fully accessible.
3121166
ENSURE THE SCISSOR ARMS ARE PROPERLY SUPPORTED.
Steer Relief
NOTE: The 2630ES/2646ES/ 3246ES platforms will have to
1500 psi
(103.4 bar)
1500 psi
(103.4 bar)
1500 psi
(103.4 bar)
1500 psi
(103.4 bar)
1500 psi
(103.4 bar)
3.
4. Slowly remove the fill plug venting any pressure that
5. To check the oil level, lower platform so it rests on
THERE MAY BE UP TO 10 PSI OF PRESSURE IN THE TANK.
6. With the plug removed, the oil level should be com-
7. If additional oil is required, add proper grade of oil
NOTE: Care should be taken not to introduce any impurities
8. Replace plug and torque to 40 ft. lbs. (56 Nm).
9. Any time a hydraulic component is removed or
– JLG Lift –
SECTION 4 - HYDRAULICS
CAUTION
be raised higher than the 1930ES and 2030ES in
order to access the oil plug.
Wipe all dirt and debris from the filler plug area.
may be built up in the reservoir.
the safety porp.
CAUTION
pletely full, at the top of the fill port with scissor arms
resting on the safety prop. from the fill port.
by using a funnel with a flexible spout or a plastic
squeeze bottle. Fill until oil weeps out of opening.
(dirt, water etc.) while plug is removed.
replaced, cycle the scissor arms several times and
refer to steps 3 and 4 to recheck oil level.
4-3