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NATIONAL CRANE
08-19-2022 Control # 092-13
4-1
600H SERVICE MANUAL
BOOM
4
SECTION 4
BOOM
SECTION CONTENTS
Three Section Boom Operation. . . . . . . . . . . . . . . 4-2
Special Boom Inspection . . . . . . . . . . . . . . . . . . . 4-2
Three Section Boom Maintenance . . . . . . . . . . . . 4-2
Three Section Cable Tensioning. . . . . . . . . . . . . . 4-2
Hoist Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Boom Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Boom Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Boom Disassembly Alternative #1 . . . . . . . . . . . . 4-4
Boom Disassembly Alternative #2 . . . . . . . . . . . . 4-5
Additional Maintenance, Disassembled Boom . . . 4-5
Three Section Boom Assembly. . . . . . . . . . . . . . . 4-6
Three Section Top/Bottom Pad Replacement
(Assembled Boom) . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Top Rear Pad Replacement . . . . . . . . . . . . . . . . . 4-7
Front Bottom Pad Replacement . . . . . . . . . . . . . . 4-8
Inner Wear Pad Calibration . . . . . . . . . . . . . . . . . . 4-8
Four Section Boom Operation. . . . . . . . . . . . . . . 4-10
Four Section Boom Maintenance . . . . . . . . . . . . 4-11
Four Section Boom Disassembly . . . . . . . . . . . . 4-11
Boom Disassembly Alternative #1 . . . . . . . . . . . 4-12
Boom Disassembly Alternative #2 . . . . . . . . . . . 4-13
Four Section Boom Assembly. . . . . . . . . . . . . . . 4-13
Cable Tensioning . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Tensioning Setup Procedure . . . . . . . . . . . . . . . 4-16
Cable Tension Sequence . . . . . . . . . . . . . . . . . . 4-17
5 - Section Boom w/ 2 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4- Section Boom w/ 2 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4- Section Boom w/ 1 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
3- Section Boom w/ 1 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Cable Retention . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Lift Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . . 4-24
Lift Cylinder Disassembly . . . . . . . . . . . . . . . . . . 4-24
Telescope Cylinder Repair . . . . . . . . . . . . . . . . . . 4-25
Telescope Cylinder Disassembly. . . . . . . . . . . . . 4-25
Telescope Cylinder Assembly . . . . . . . . . . . . . . . 4-26
Jib Installation and Adjustment . . . . . . . . . . . . . . 4-26
Jib Jack Service and Maintenance . . . . . . . . . . . 4-28
Five Section Boom . . . . . . . . . . . . . . . . . . . . . . . . 4-29
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Six Section Boom . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
Boom Disassembly . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Boom Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Sixth Section Assembly . . . . . . . . . . . . . . . . . . . . 4-47
5th, 4th, 3th, and 2nd Section Assembly . . . . . . . 4-53
Telescope Cylinder Installation . . . . . . . . . . . . . . 4-56
3rd-2nd-1st Section Assembly. . . . . . . . . . . . . . . 4-59
Sync Cable Top Anchor Brackets . . . . . . . . . . . . 4-60
Sync Cable Adjustment . . . . . . . . . . . . . . . . . . . . 4-62
REFERENCE ONLY
Summary of Contents for 600H
Page 1: ...Service Manual National Crane 600H R E F E R E N C E O N L Y...
Page 6: ...THIS PAGE BLANK R E F E R E N C E O N L Y...
Page 136: ...BOOM 600H SERVICE MANUAL 4 62 08 19 2022 Control 092 13 R E F E R E N C E O N L Y...
Page 231: ...R E F E R E N C E O N L Y...
Page 232: ...R E F E R E N C E O N L Y...