JLG 660SJ Operator Manual - Manual (Page 112)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
6-8 – JLG Lift – 3121205
Tires
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
recommends Mobilfluid 424 hydraulic oil, which has an
SAE viscosity index of 152.
NOTE: When temperatures remain below 20° F (-7 degrees C),
JLG Industries recommends the use of Mobil DTE 13M.
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, con-
tact JLG Industries for proper recommendations.
Table 6-11. Tire Specifications
Size 15 x 19.5 15 x 19.5 18 x 625 39x15-22.5 39x15-22.5
Load Range G G H G G
Ply Rating 14 14 16 14 14
Tire Pressure 95 PSI
(6.5 Bar)
Foam-
Filled
75 PSI
(5.2 Bar)
95 PSI
(6.5 Bar)
Foam-Filled
Table 6-12. Hydraulic Oil
HYDRAULIC SYSTEM OPERATING
TEMPERATURE RANGE
SAE VISCOSITY GRADE
+0° to +180° F (-18° C to +83° C) 10W
+0° F to +210° F (-18° C to +99° C) 10W-20, 10W-30
+50° F to +210° F (+10° C to +210° C) 20W-20
Table 6-13. 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