SECTION 3 - TROUBLESHOOTING
3120863
– JLG Lift –
3-7
Boom swings erratically in either direction.
Hydraulic system oil low.
Replenish oil as necessary.
Lack of lubricant on swing gear or speed reducer
pinion.
Lubricate as required. (See Lubrication Chart.)
Swing motor not functioning properly.
Repair or replace swing control switch.
Worn or broken teeth on swing gear or swing
motor pinion.
Replace gear(s) as required.
Restrictor valves(s) plugged.
Clean or replace restrictor valve.
Table 3-2.Boom Assembly - Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
Summary of Contents for 80HX
Page 2: ......
Page 10: ...vi JLG Lift 3120863 TABLE OF CONTENTS Continued THIS PAGE LEFT BLANK INTENTIONALLY...
Page 16: ...SECTION 1 SPECIFICATIONS 1 6 JLG Lift 3120863 Figure 1 2 Lubrication Diagram...
Page 27: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 5 Figure 2 1 Proportional Control Valve...
Page 34: ...SECTION 2 PROCEDURES 2 12 JLG Lift 3120863 Figure 2 5 Typical Hydraulic Cylinders Sheet 1 of 4...
Page 35: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 13 Figure 2 6 Typical Hydraulic Cylinders Sheet 2 of 4...
Page 36: ...SECTION 2 PROCEDURES 2 14 JLG Lift 3120863 Figure 2 7 Typical Hydraulic Cylinders Sheet 3 of 4...
Page 37: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 15 Figure 2 8 Typical Hydraulic Cylinders Sheet 4 of 4...
Page 44: ...SECTION 2 PROCEDURES 2 22 JLG Lift 3120863 Figure 2 12 Boom Assembly Sheet 1 of 2...
Page 45: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 23 Figure 2 13 Boom Assembly Sheet 2 of 2...
Page 53: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 31 Figure 2 16 Adeco Actuator Adjustments F4L912...
Page 68: ...SECTION 2 PROCEDURES 2 46 JLG Lift 3120863 Figure 2 32 Swing Bearing Torquing Sequence...
Page 70: ...SECTION 2 PROCEDURES 2 48 JLG Lift 3120863 Figure 2 33 Torque Hub Assembly...
Page 108: ...SECTION 3 TROUBLESHOOTING 3 20 JLG Lift 3120863 Figure 3 1 Wiring Schematic Sheet 1 of 4...
Page 110: ...SECTION 3 TROUBLESHOOTING 3 22 JLG Lift 3120863 Figure 3 3 Wiring Schematic Sheet 3 of 4...
Page 112: ...SECTION 3 TROUBLESHOOTING 3 24 JLG Lift 3120863 Figure 3 5 Hydraulic Schematic Sheet 1 of 6...
Page 114: ...SECTION 3 TROUBLESHOOTING 3 26 JLG Lift 3120863 Figure 3 7 Hydraulic Schematic Sheet 3 of 6...
Page 116: ...SECTION 3 TROUBLESHOOTING 3 28 JLG Lift 3120863 Figure 3 9 Hydraulic Schematic Sheet 5 of 6...
Page 118: ...SECTION 3 TROUBLESHOOTING 3 30 JLG Lift 3120863 This page left blank intentionally...
Page 119: ......
