JLG 1850SJ, Service And Maintenance Manual, Page: 26 / 712

SECTION 1 - SPECIFICATIONS
1-2 3121619
1.5 ENGINE DATA
1.6 MAJOR COMPONENT WEIGHTS
DO NOT REPLACE ITEMS CRITICAL TO STABILITY WITH ITEMS OF DIFFERENT
WEIGHT OR SPECIFICATION (FOR EXAMPLE: BATTERIES, FILLED TIRES, PLAT-
FORM) DO NOT MODIFY UNIT IN ANY WAY TO AFFECT STABILITY.
1.7 HYDRAULIC OIL
NOTE: Hydraulic oils require anti-wear qualities at least API Ser-
vice Classification GL-3, and sufficient chemical stability
for mobile hydraulic system service.
NOTE: Aside from JLG recommendations, it is not advisable to
mix oils of different brands or types, as they may not con-
tain the same required additives or be of comparable vis-
cosities.
OIL SAMPLING
This machine is equipped with an oil sampling valve to
allow for verification of hydraulic oil condition. Refer to
Section 5 - Hydraulics for Oil Sampling procedures.
Table 1-6. Critical Stability Weights
Components LBS. KG.
Tire & Wheel 1025 465
Drive Hub & Motor 337 153
Swing Drive 223 101.2
Engine Assembly 822 373
Complete Boom (including jib & platform) 23,600 10705
Main Boom Assembly 21,600 9798
Jib Assembly 1493 677
Table 1-5. Engine Data - Deutz TD 3.6L
Type Turbo-charged Diesel
Number of Cylinders 4
Bore 3.9 in. (98 mm)
Stroke 4.7 in. (120 mm)
Total Displacement 221 cu.in. (3.6 L)
Firing Order 1-3-4-2
Output 99.8 hp (74.4 kW)
Low Idle Engine RPM 1000 ±50
High Engine RPM 2300±50
Average Fuel Consumption 2.73 gph (10.3 lph)
Acceptable Fuel Grades Ultra Low Sulfur (15 ppm)
Up to 5% BioDiesel
Table 1-8. 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 1-7. Hydraulic Oil
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