SECTION 3 - COMPONENT SERVICING
3-12 – JLG Lift – 3121741
Gas Cylinder Pressurizing
BEFORE PRESSURIZING THE GAS CYLINDER BE CERTAIN THE FLY-
WHEEL CRANK PIN IS ENGAGED WITH ONE OF THE FLYWHEEL BACK-
ING PLATE SLOTS.
Fill each gas cylinder through the valve on the side of the
cylinder barrel with nitrogen gas.
DO NOT EXCEED 1450 PSI (100 BAR) MAXIMUM PRESSURE IN THE GAS
STRUT.
Flywheel Rotation Force - Testing
(See Figure 3-18.)
When the gas cylinder is pressurized properly, it should
take no more than 55 lb. (25 Kg) of force to turn the fly-
wheel handle in the counter-clockwise (lowering) direc-
tion, when the platform is close to fully lowered. At this
mast position the gas cylinder inside the mast assembly, is
almost fully compressed.
Table 3-1. Ecolift 50 - Gas Cylinder Recharging Pressure
AMBIENT TEMPERATURE IN
RECHARGING AREA
PRESSURE
5° F to 23° F
(-15.0 to -5.1°C)
928 PSI +/- 7 PSI
(64 bar +/- 0.5 bar)
23° F to 41° F
(-5.0 to +4.9°C)
972 PSI +/- 7 PSI
(67 bar +/- 0.5 bar)
41° F to 59° F
(+5.0 to +14.9°C)
1015 PSI +/- 7 PSI
(70 bar +/- 0.5 bar)
59° F to 77° F
(+15.0 to +24.9°C)
1059 PSI +/- 7 PSI
(73 bar +/- 0.5 bar)
77° F to 95° F
(+25.0 to +34.9°C)
1102 PSI +/- 7 PSI
(76 bar +/- 0.5 bar)
Table 3-2. Ecolift 70 - Gas Cylinder Recharging Pressure
AMBIENT TEMPERATURE IN
RECHARGING AREA
PRESSURE
5° F to 23° F
(-15.0 to -5.1°C)
1001 PSI +/- 7 PSI
(69 bar +/- 0.5 bar)
23° F to 41° F
(-5.0 to +4.9°C)
1044 PSI +/- 7 PSI
(72 bar +/- 0.5 bar)
41° F to 59° F
(+5.0 to +14.9°C)
1088 PSI +/- 7 PSI
(75 bar +/- 0.5 bar)
59° F to 77° F
(+15.0 to +24.9°C)
1031 PSI +/- 7 PSI
(78 bar +/- 0.5 bar)
77° F to 95° F
(+25.0 to +34.9°C)
1175 PSI +/- 7 PSI
(81 bar +/- 0.5 bar)
Figure 3-18. Flywheel Rotation Force - Testing - Ecolift
1. Flywheel Crank - Pin Released + Person in Platform
2. Calibrated Digital Spring Balance
3. Rotate in Counter-Clockwise Direction
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