JLG 600SC_660SJC Operator Manual - Manual (Page 98)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
6-4 – JLG Lift – 3121156
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 6-5. Caterpillar 3044C/3.4
Type Four Stroke Cycle
Cylinders 4 in-line
Bore 3.70 inch (94 mm)
Stroke 4.72 inch (120 mm)
Aspiration turbocharged
Compression ratio 19:1
Displacement 203 in 3 (3.33 L)
Firing Order 1-3-4-2
Rotation (viewed from flywheel) Counterclockwise
Oil Capacity (w/filter) 10.6 quarts (10 L)
Cooling System (Engine Only) 5.8 quarts (5.5 L)
Idle RPM - 3044C 1000
Idle RPM - 3.4 1200
Low RPM 1800
High RPM 2600
Alternator 60 Amp, belt drive
Table 6-6. 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