8-16
CHAIN
Chain sheave(V mast)
Place a sling around carriage and attach
to an overhead hoist. Lift carriage high
enough so that the tension on the chain
over sheaves is relieved after the carriage
is blocked. Position wooden blocks under
the carriage and lower it.
Remove the split pin securing the chain
anchor pins and discard.
While supporting the chains, remove the
chain anchor pins and drape the chains
over the carriage.
Remove retaining ring securing sheaves
to sheave support. Remove sheaves
with bearings.
Remove bearing retaining ring from
sheave and press bearings from
sheaves.
Thoroughly clean, inspect and replace all
worn or damaged parts.
Reverse the above to assemble and
install. Use new split pins in chain anchor
pins.
6)
(1)
Η
Θ
Ι
Κ
Λ
Μ
Outer mast
Chain
Sheave
Inner
mast
Carriage
Anchor
bolt
22BHA7MS23
Middle mast
Chain
Sheave
Chain
Free lift cylinder
Carriage
Anchor
bolt
Anchor
bolt
Inner mast
22BHA7MS25
Rear chain sheave(TF mast)
Raise and securely block carriage and
inner mast section.
Remove the split pin securing the chain
anchor pins and discard. While
supporting the chains, remove the chain
anchor pins from outer mast section.
Remove chains.
Remove retaining ring securing chain
sheaves to sheave support. Pry off
sheaves with bearings.
Remove bearing retaining ring from
sheave and press bearings from
sheaves.
Thoroughly clean, inspect and replace all
worn or damaged parts.
Reverse the above procedure to
assemble and install. Use new split pins
in chain anchor pins.
(2)
Η
Θ
Ι
Κ
Λ
Μ
Ν
