Jlg 450AJ Service Manual manuals

Owner’s manuals and user’s guides for Special machinery Jlg 450AJ Service Manual.
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Table of contents

February 16, 2000

1

PRECAUTIONS

3

REVISON LOG

4

5

TABLE OF CONTENTS

6

SECTION 1. SPECIFICATIONS

9

SECTION 1 - SPECIFICATIONS

10

1.5 TORQUE REQUIREMENTS

10

1.6 LUBRICATION

10

Hydraulic Oil

10

Lubrication Specifications

10

3120869 – JLG Lift – 1-3

11

SERIAL NUMBER

15

STAMPED ON FRAME

15

SECTION 2. PROCEDURES

17

2-2 – JLG Lift – 3120869

18

3120869 – JLG Lift – 2-3

19

2-4 – JLG Lift – 3120869

20

RETAINING RING

21

BASE BOOM

21

FLY BOOM

21

TELESCOPE CYLINDER

21

SECTION 2 - PROCEDURES

22

Inspection

22

Assembly of the Main Boom

22

2.7 DRIFT TEST

23

Telescope Cylinder

23

Lift Cylinder

24

2.9 CYLINDER REPAIR

25

Disassembly

25

Cleaning and Inspection

28

Assembly

29

BLEEDING PROCEDURE

32

2.11 HYDRAULIC PUMP (GEAR)

32

Inspect Parts For Wear

35

General Information

36

.0015" Feeler Gauge

39

Wear Tolerance

41

Replacement of Swing Bearing

41

Swing Bearing Torque Values

42

Parts Required

43

7016682 Shim Kit Includes;

43

3 of 0.005" thick shims

43

3 of 0.0075" thick shims

43

3 of 0.010" thick shims

43

2.15 EXTEND-A-REACH

44

LOCKOUT VALVE

44

Ring Gear/Cover Disassembly

45

Carrier Disassembly

45

Hub-Spindle Disassembly

46

Main Disassembly

46

Carrier Sub-Assembly

46

Ring Gear/Cover Sub-Assembly

49

Hub-Spindle Sub-Assembly

49

Main Assembly

49

Cover Disassembly

52

Assembly of the Carrier

52

Assembly of the Cover

54

2.19 DRIVE BRAKE (AUSCO)

61

CONTACT PLATE

64

PROXIMITY SWITCH

64

3120869 – JLG Lift – 2-49

65

Failure Modes

66

Adjustment Procedures

68

3120869 – JLG Lift – 2-53

69

Adjustment Procedure

70

3120869 – JLG Lift – 2-55

71

3120869 – JLG Lift – 2-59

75

2.29 SEMI-TRACK

77

Testing the Track

77

Removing the Track

77

Assuming Normal Wear

77

Adjustment

78

INSPECTION SCHEDULE

79

SECTION 3. TROUBLESHOOTING

83

SECTION 3 - TROUBLESHOOTING

100

JLG Worldwide Locations

116





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