Service Manual Instruction Manual

SECTION 1 - SPECIFICATIONS
1-4 – JLG Lift – 3121171
1.10 HYDRAULIC OIL
NOTE: Hydraulic oils must have anti-wear qualities at least to API
Service Classification GL-3, and sufficient chemical stabil-
ity for mobile hydraulic system service. JLG Industries rec-
ommends Mobilfluid 424 hydraulic oil, which has an SAE
viscosity index of 152.
NOTE: When temperatures remain consistently below 20 degrees
F. (-7 degrees C.), JLG Industries recommends the use of
Mobil DTE13.
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
Industries for proper recommendations.
Table 1-13.Hydraulic Oil Specifications
Hydraulic System
Operating
Temperature Range
S.A.E. Viscosity
Grade
+0° to + 180° F
(-18° to +83° C)
10W
+0° to + 210° F
(-18° to +99° C)
10W-20, 10W30
+50° to + 210° F
(+10° to +99° C
20W-20
Table 1-14. Mobilfluid 424 Specs
SAE Grade 10W30
Gravity, API 29.0
Density, Lb/Gal. 60°F 7.35
Pour Point, Max -46°F (-43°C)
Flash Point, Min. 442°F (228°C)
Viscosity
Brookfield, cP at -18°C 2700
at 40° C 55 cSt
at 100° C 9.3 cSt
Viscosity Index 152
Table 1-15. Mobil DTE 13M Specs
ISO Viscosity Grade #32
Specific Gravity 0.877
Pour Point, Max
-40°F (-40°C)
Flash Point, Min.
330°F (166°C)
Viscosity
at 40° C 33cSt
at 100° C 6.6 cSt
at 100° F 169 SUS
at 210° F 48 SUS
cp at -2 0° F 6 ,2 00
Viscosity Index 140