JLG 601S Service Manual - Manual (Page 21)

SECTION 1 - SPECIFICATIONS
3120866 – JLG Lift – 1-5
Hydraulic Oil
NOTE: Hydraulic oils must have anti-wear qualities at least
to API Service Classification GL-3, and sufficient
chemical stability for mobile hydraulic system ser-
vice. 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.
NOTE: 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, contact JLG Indus-
tries for proper recommendations.
Lubrication Specifications
1.7 PRESSURE SETTINGS
Main Relief - 3000 PSI (206.85 Bar).
Upper Boom Lift Down - 1500 PSI (103.4 Bar).
Swing - 1700 PSI (117.2 Bar).
Steer - 1800 PSI (124.11 Bar).
Steer Reliefs - 4WS Front & Rear - 1500 PSI (103.4 Bar).
Platform Level Forward - 2800 PSI (193.06 Bar).
Backward - 1800 PSI (124.11 Bar).

Table 1-3. 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 1-4. Mobil DTE 13M Specs
ISO Viscosity Grade #32
Specific Gravity 0.877
Pour Point, Max -40 F (-40 C)
Flash Point, Min. 330 F (166 C)
Viscosity
at 40° C 33cSt
at 100° C 6.6 cSt
at 100° F 169 SUS
at 210° F 48 SUS
cp at -20° F 6,200
Viscosity Index 140
Table 1-5. Lubrication Specifications
KEY SPECIFICATIONS
MPG Multipurpose Grease having a minimum drip-
ping point of 350° F. Excellent water resistance
and adhesive qualities, 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. API service classification GL-3,
e.g. Mobilfluid 424.
EO Engine (crankcase) Oil. Gas - API SF, SH, SG
class, MIL-L-2104. Diesel - API CC/CD class,
MIL-L-2104B/MIL-L-2104C.
NOTE: Refer to Lubrication Chart, for specific lubrication
procedures.