JLG 740A, Service And Maintenance Manual

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SECTION 1 - SPECIFICATIONS
3121160 – JLG Lift – 1-5
1.15 TORQUE REQUIREMENTS 1.16 LUBRICATION
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 consistently below 20
degrees F. (-7 degrees C.), JLG Industries recom-
mends the use of Mobil DTE13.
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 1-18. Torque Requirements
Description
Torque Value
(Dry)
Interval Hours
Wheel Bolts 300 ft. lbs.
(407 Nm)
150
Support to Rotator Bolts 50 ft. lbs.
(68 Nm)
As required
Rotator Center Bolt 480 ft.lbs.
(651 Nm)
As required
Swing Bearing Bolts 190 ft. lbs.
(260 Nm)
50/600*
Starter or Aux Pump
Solenoid
Contacts
Coil
95 in. lbs. (10.5 Nm)
40 in. lbs. (4.5 Nm)
As required
Oxygen Sensor (Ford
Engine)
29.5-40 ft. lbs.
(40-54 Nm)
At Installation
Megajector Mounting
Bolts (Ford Engine)
60 in. lbs.
(7 Nm)
As required
Lockoff Solenoid (Ford
Engine)
8-12 ft.lbs.
(11-16 Nm)
At Installation
*Check swing bearing bolts for security after first 50 hours
of operation and every 600 hours thereafter. (See Swing
Bearing in Section 3.)
NOTE: When maintenance becomes necessary or a fas-
tener has loosened, refer to the Torque Chart to
determine proper torque value.
Table 1-19. 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
Table 1-20. 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