Jlg 120HX ANSI Service Manual manuals

Owner’s manuals and user’s guides for Special machinery Jlg 120HX ANSI Service Manual.
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Table of contents

P/N - 3120686

1

PRECAUTIONS

3

REVISON LOG

4

TABLE OF CONTENTS

5

(Continued)

10

SECTION 1. SPECIFICATIONS

11

1-2 – JLG Lift – 3120686

12

3120686 – JLG Lift – 1-3

13

SECTION 1 - SPECIFICATIONS

14

Engine (Crankcase) Oil

15

Hydraulic Oil

15

Lubrication Specifications

15

1.7 LUBRICATION

15

Main Control Valve

18

Frame Mounted Control Valve

18

3120686 – JLG Lift – 1-9

19

SECTION 2. PROCEDURES

21

2-2 – JLG Lift – 3120686

22

3120686 – JLG Lift – 2-3

23

2-4 – JLG Lift – 3120686

24

SECTION 2 - PROCEDURES

25

Inspection Procedure

26

2.7 WEAR PADS

28

2.8 DRIFT TEST

28

Telescope Cylinder

28

3120686 – JLG Lift – 2-9

29

2-10 – JLG Lift – 3120686

30

2.10 CYLINDER REMOVAL AND

31

INSTALLATION

31

Telescope Cylinder Removal

31

Lift Cylinder Removal

32

Lift Cylinder Installation

32

Master Level Cylinder Removal

33

2.11 CYLINDER REPAIR

33

Disassembly

33

Cleaning and Inspection

34

Assembly

35

2.12 BOOM MAINTENANCE

37

Inspection

41

Installation

42

2.13 TILT ALARM SWITCH

44

Manual Adjustment

44

3120686 – JLG Lift – 2-25

45

Frame Valve

47

.0015" Feeler Gauge

52

Wear Tolerance

53

Replacement

53

Swing Bearing Torque Values

55

2.18 DRIVE TORQUE HUB

55

2.19 SWING TORQUE HUB

60

2.20 SWING BRAKE

63

2.21 DRIVE BRAKE

65

3120686 – JLG Lift – 2-47

67

2.23 PQ CONTROLLERS

68

RAMP Adjustment

71

2-52 – JLG Lift – 3120686

72

Operational Check

73

2.26 LOAD MANAGEMENT SYSTEM

73

Overmoment Control System

74

2-58 – JLG Lift – 3120686

78

INSPECTION SCHEDULE

79

SECTION 3. TROUBLESHOOTING

83

SECTION 3 - TROUBLESHOOTING

100

JLG Worldwide Locations

114





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