JLG 15/20MSP Service Manual - Manual (Page 18)

SECTION 1 - MACHINE SPECIFICATIONS
1-4 – JLG Lift – 3121231
1.4 LUBRICATION
NOTE: Also see Lubrication Interval Chart - Table 1-7, Lubri-
cation Intervals for Various Components in this sec-
tion of the manual.
Hydraulic Oil
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 of 10W-30 and a viscosity index of 152.
For cold weather applications, i.e. when temperatures
remain consistently below +20°F (–7°C) JLG recom-
mends using Mobil DTE 13 hydraulic oil.
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. If use of hydraulic oil other than Mobilfluid 424 is
desired, contact JLG Industries for proper recommenda-
tions.
Lubrication Specifications
1.5 CYLINDER SPECIFICATIONS
NOTE: All dimensions are given in inches (in), with the met-
ric equivalent, centimeters (cm), given in parenthe-
ses.
1.6 SERIAL NUMBER LOCATIONS
For machine identification, a serial number plate is affixed
to the machine. The plate is located on the back of the
mast, just above the mast support column.
1.7 TORQUE REQUIREMENTS
When maintenance becomes necessary or a fastener has
loosened, refer to the applicable Torque Charts in this sec-
tion of the manual, to determine proper torque values for
different size fasteners. Table 1-4. Hydraulic Oil Operating Range
HYDRAULIC SYSTEM OPERATING
TEMPERATURE RANGE
SAE VISCOSITY
GRADE
+0° F 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 +99° C)
20W-20
Table 1-5. Lubrication Specifications
KEY SPECIFICATIONS
MPG - Multipurpose Grease having a minimum dripping point
of 350° F. Excellent water resistance and adhesive qual-
ities, and being of extreme pressure type. (Timken OK
40 pounds minimum.)
EPGL - Extreme Pressure Gear Lube (oil) meeting API service
classification GL-5 or MIL-Spec MIL-L-2105.
HO - Hydraulic Oil. ISO-Vg grade 32, 46.
CL - Chain Lube. Use a good quality chain lubricant.
Table 1-6. Cylinder Specifications
DESCRIPTION
BORE
in./(cm)
STROKE
in./(cm)
ROD DIA.
in./(cm)
15MVL/15MSP -
Lift Cylinder 1.63
(4.10)
41.50
(105.4)
1.375
(3.49)
20MVL/20MSP -
Lift Cylinder
1.63
(4.10)
54.0
(137.1)
1.375
(3.49)