Hyundai 10BOP-7 Operation Manual page 30

(7) INNER MAST
Using an overhead hoist raise the inner
mast straight and carefully draw out of
outer mast section.
Be careful the mast not to swing or fall.
Using an universal puller, remove the
load rollers.
Free lift
cylinder
Inner
mast
Middle
mast
Outer
mast
2-6
10BOP7RE13