Lubrication; Hydraulic Oil; Lubrication Specifications; Cylinder Specifications - JLG 15MVL Series Service Maintenance Manual

SECTION 1 - MACHINE SPECIFICATIONS

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.
Table 1-4. Hydraulic Oil Operating Range
HYDRAULIC SYSTEM OPERATING
TEMPERATURE RANGE
+0° F to +180° F
(-18° C to +83° C)
+0° F to +210° F
(-18° C to +99° C)
+50° F to +210° F
(+10° C to +99° C)

Lubrication Specifications

Table 1-5. Lubrication Specifications
KEY
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.
1-4
SAE VISCOSITY
GRADE
10W
10W-20, 10W-30
20W-20
SPECIFICATIONS

1.5 CYLINDER SPECIFICATIONS

NOTE: All dimensions are given in inches (in), with the met-
ric equivalent, centimeters (cm), given in parenthe-
ses.
Table 1-6. Cylinder Specifications
DESCRIPTION
15MVL/15MSP -
Lift Cylinder
20MVL/20MSP -
Lift Cylinder

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.
– JLG Lift –
BORE STROKE
in./(cm) in./(cm)
1.63 41.50
(4.10) (105.4)
1.63 54.0
(4.10) (137.1)
ROD DIA.
in./(cm)
1.375
(3.49)
1.375
(3.49)
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