14. Telescopingcylinder
1 5-SectionBoom(TripleCylinder)Operation
(1)WhenTelescopingCylinder1extends (14−1)
(2)WhenTelescopingCylinder1retracts (14−2)
(3)WhenTelescopingCylinder2extends (14−3)
(4)WhenTelescopingCylinder2retracts (14−4)
(5)WhenTelescopingCylinder3extends (14−5)
(6)WhenTelescopingCylinder3retracts (14−6)
(14−7)
2 FunctionandWorkingofCushionSeal
(1)FlowofPressureOilWhenRetracting (14−8)
(2)FlowofPressureOilWhenExtending (14−9)
3 CauseofTroublesandMeasurestobetaken
(14−10〜11)
15. Derrickcylinder
1 Flowofoil,whenlowering (15−1)
2 Flowofoil,whenraising (15−2)
16. Howtopunch
(16−1)
(16−2〜3)
17. Hoistwinch
(17−1)
2 Cautiontobetakenwhenreassemblinghoistwinch (17−2)
3 CauseofTroublesandMeasurestobeTaken(Hoistwinch) (17−3)
18. Hook
(18−1)
19. Slewing
1 Constructionofslewingreductiongear (19−1)
(19−2)
3 Slewingreductiongeardisassemblyprocedures (19−3〜5)
20. Turntable
1 TurntableMountingProcedures (20−1)
(20−2)
21. Column
(21−1)
22. Slipring
1 Constructionofslipringanditsfittingposition (22−1)
Telescoping/Derrickcylindermeasurestopreventpistonfrombeing
loosened
1 Tighteningtorqueforboltsfasteningcolumnandtighteningorder
1 ConstructionofHoistWinchandbrakeshoeadjustingprocedure
2 Positionofsoftzone,tighteningsequenceofboltsandtighteningtorque
(7)AdjustingProceduresforSelectorValvewithAdjustingBolt
2 ConstructiontobetakenwhenreassemblingSlewingreductiongear