SECTION 5 - HYDRAULICS
3121160
– JLG Lift –
5-1
SECTION 5. HYDRAULICS
5.1 LUBRICATING O-RINGS IN THE
HYDRAULIC SYSTEM
When assembling connectors in the hydraulic that use o-
ring fittings, it is necessary to lubricate all fittings with
hydraulic oil prior to assembly. To lubricate the fittings, use
one of the following procedures.
NOTE:
All O-ring fittings must be pre-lubricated with hydrau-
lic oil prior to assembly.
Cup and Brush
The following is needed to correctly oil the o-ring in this
manner:
• A small container for hydraulic oil
• Small paint brush
1.
Hold the fitting in one hand while using the brush
with the other hand to dip into the container.
Remove excess hydraulic oil from the brush so an
even film of oil is applied on the o-ring.
2.
Holding the fitting over the hydraulic oil container,
brush an even film of oil around the entire o-ring in
the fitting, making sure the entire o-ring is com-
pletely saturated.
3.
Turn the o-ring on the other side of the fitting and
repeat the previous step, ensuring the entire o-ring
is coated with hydraulic oil.
Summary of Contents for 740A
Page 1: ...Service and Maintenance Manual Models 740A 740AJ P N 3121160 January 8 2013 ...
Page 2: ......
Page 52: ...SECTION 2 GENERAL 2 12 JLG Lift 3121160 NOTES ...
Page 109: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 57 Figure 3 39 Swing Hub ...
Page 135: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 83 Figure 3 48 Rotary Coupling Port Location ...
Page 153: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 101 Figure 3 54 EFI Component Location ...
Page 156: ...SECTION 3 CHASSIS TURNTABLE 3 104 JLG Lift 3121160 Figure 3 55 ECM EPM Identification ECM EPM ...
Page 173: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 121 Figure 3 65 EMR2 Fault Codes Sheet 1 of 5 ...
Page 174: ...SECTION 3 CHASSIS TURNTABLE 3 122 JLG Lift 3121160 Figure 3 66 EMR2 Fault Codes Sheet 2 of 5 ...
Page 175: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 123 Figure 3 67 EMR2 Fault Codes Sheet 3 of 5 ...
Page 176: ...SECTION 3 CHASSIS TURNTABLE 3 124 JLG Lift 3121160 Figure 3 68 EMR2 Fault Codes Sheet 4 of 5 ...
Page 177: ...SECTION 3 CHASSIS TURNTABLE 3121160 JLG Lift 3 125 Figure 3 69 EMR2 Fault Codes Sheet 5 of 5 ...
Page 244: ...SECTION 4 BOOM PLATFORM 4 28 JLG Lift 3121160 Figure 4 14 Rotator Assembly HELAC ...
Page 286: ...SECTION 4 BOOM PLATFORM 4 70 JLG Lift 3121160 NOTES ...
Page 307: ...SECTION 5 HYDRAULICS 3121160 JLG Lift 5 21 Figure 5 17 Variable Displacement Pump Rexroth ...
Page 316: ...SECTION 5 HYDRAULICS 5 30 JLG Lift 3121160 NOTES ...
Page 319: ...SECTION 6 JLG CONTROL SYSTEM 3121160 JLG Lift 6 3 Figure 6 2 ADE Block Diagram ...
Page 328: ...SECTION 6 JLG CONTROL SYSTEM 6 12 JLG Lift 3121160 Figure 6 11 Control Module Location ...
Page 374: ...SECTION 6 JLG CONTROL SYSTEM 6 58 JLG Lift 3121160 NOTES ...
Page 406: ...SECTION 7 BASIC ELECTRICAL INFORMATION SCHEMATICS 7 32 JLG Lift 3121160 NOTES ...
Page 407: ......