JLG 80SL Service Manual - Manual (Page 16)

SECTION 1 - SPECIFICATIONS
1-4 – JLG Lift – 3121325
1.8 PRESSURE SETTING
Cold temperatures have a significant impact on pressure
readings. JLG Industries Inc. recommends setting the
pressures with the operating temperature between 59° -
68°F (15°- 20°C). JLG Industries Inc. also recommends the
use of a calibrated gauge. The pressures may be set with
a tolerence of 43.5 psi ( ± 3 bar).
1.9 MAJOR COMPONENT WEIGHTS
1.10 CRITICAL STABILITY WEIGHTS
DO NOT REPLACE ITEMS CRITICAL TO STABILITY, SUCH AS
BATTERIES OR SOLID TIRES, WITH ITEMS OF DIFFERENT-
WEIGHT OR SPECIFICATION. DO NOT MODIFY UNIT IN ANY WAY
TO AFFECT STABILITY.
1.11 LUBRICATION
Hydraulic Oil
NOTE: Hydraulic oils must have anti-wear qualities at least
to API Service Classification GL-3, and sufficient
chemical stability for mobile hydraulic system ser-
vice. JLG Industries recommends Mobilfluid 424
hydraulic oil, which has an SAE viscosity index of
152.
When temperatures remain below 20°F (-7°C), JLG
Industries recommends the use of Mobil DTE13M.
Aside from JLG recommendations, it is not advisable
to mix oils of different brands or types, as they may
not contain the same required additives or be of
comparable viscosities. If use of hydraulic oil other
than Mobilfluid 424 is desired, contact JLG Indus-
tries for proper recommendations.
Table 1-7. Pressure Settings
Main Pressure Relief ±43.5 psi (3 bar)
3046 psi
(210 bar)
Pump Charge Pressure ±43.5 psi (3 bar)
203 psi
(14 bar)
Table 1-8. Major Component Weights
Component 80SL
Platform Assembly (including extension)
2414 lbs
(1095 kg)
Platform Extension
1058 lbs
(480 kg)
Chassis
12,787 lbs
(5800 kg)
Arm Assembly
15,653 lbs
(7100 kg)
Lift Cylinder
1821 lbs
(826 kg)
Table 1-9. Critical Stability Weights
Component 80SL
Wheel and Tire Assembly (each)
573 lbs
(260 kg)
Wheel/Tire and Drive Assembly (each)
675 lbs
(306 kg)
Batteries - Standard (each)
54.2 lbs
(24.6 kg)
Table 1-10. Hydraulic Oil
HYDRAULIC SYSTEM OPERATING
TEMPERATURE RANGE
SAE VISCOSITY GRADE
0° to +23°F
(-18° to -5°C)
10W
0° to +210°F
(-18° to +100°C)
10W-20, 10W-30
+50° to +210°F
(+10° to +100°C)
20W-20
Table 1-11. Mobil Hydraulic Oil Specs
Description Mobil 424
Mobil DTE
13M
Mobil EAL 46
(Envirosyn H 46 )
ISO Viscosity Grade 10W-30 #32 46
Specific Gravity 29.0 0.877 0.922
Pour Point, Max -46°C
(-43°F)
-40°C
(-40°F)
-39°C
(-38.2°F)
Flash Point, Min. 228°C
(442°F)
166°C
(330°F)
310°C
(590°F)
Viscosity
at 40° C (104°F)
at 100°C (212°F)
Viscosity Index 55 cSt
9.3 cSt
152
33 cSt
6.5 cSt
140
47 cSt
9 cSt
176