Manitowoc National Crane 800D User Manual

National Crane Published 5-27-2018 Control # 039-06 6-1
800D REPAIR
SECTION 6
REPAIR
SECTION CONTENTS
Cylinder Disassembly and Repair. . . . . . . . . . . . . 6-2
Telescope Cylinder. . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Telescope Cylinder Disassembly . . . . . . . . . . . . . 6-3
Telescope Cylinder Assembly. . . . . . . . . . . . . . . . 6-3
Three Section Boom Operation. . . . . . . . . . . . . . . 6-4
Boom Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Boom Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Boom Retracted . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Three Section Boom Maintenance . . . . . . . . . . . . 6-5
Internal Cable Sheave Lubrication . . . . . . . . . . . . 6-5
Three Section Cable Tensioning. . . . . . . . . . . . . . 6-5
Three Section Boom Service . . . . . . . . . . . . . . . . . 6-6
Boom Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Boom Disassembly . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Additional Maintenance, Disassembled Boom . . . 6-7
Three Section Boom Assembly. . . . . . . . . . . . . . . 6-8
Three Section Top/bottom Pad Replacement
Assembled Boom . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Top Rear Pad Replacement . . . . . . . . . . . . . . . . . 6-9
Front Bottom Pad Replacement . . . . . . . . . . . . . 6-10
Four Section Boom Operation . . . . . . . . . . . . . . 6-10
Four Section Boom Maintenance. . . . . . . . . . . . . 6-10
Internal Cable Sheave Lubrication. . . . . . . . . . . . 6-10
Four Section Cable Tensioning . . . . . . . . . . . . . . 6-11
Four Section Boom Service . . . . . . . . . . . . . . . . . 6-11
Boom Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Boom Disassembly . . . . . . . . . . . . . . . . . . . . . . . 6-11
Four Section Boom Assembly . . . . . . . . . . . . . . . 6-13
Four Section Top/bottom Pad Replacement
Assembled Boom . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Top Rear Pad Replacement . . . . . . . . . . . . . . . . 6-15
Front Bottom Pad Replacement . . . . . . . . . . . . . 6-16
Boom Cable Tensioning . . . . . . . . . . . . . . . . . . . . 6-16
Cable Tensioning. . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Cable Tension Sequence . . . . . . . . . . . . . . . . . . 6-17
4- Section Boom w/ 2 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
4- Section Boom w/ 1 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
3- Section Boom w/ 1 Stage Cylinder Cable
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Cable Retention . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
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Reference
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Manitowoc National Crane 800D Specifications

General

Brand	Manitowoc
Model	National Crane 800D
Category	Construction Equipment
Language	English