7.1.2 Load chain lubrication
Refer to5.1(3) Lubricating the load chain.
ALWAYS lubricate load chain once a week, or more frequently, depending on severity of service.
ALWAYS lubricate more frequently than normal in corrosive environment (In salt water, sea air and/or acid or other
corrosive compounds)
7.2 Chain replacement
Observe the procedure below when replacing the chain referring to Fig.7-1. For single and double fall chains.
Refer to 7-2-1 and 7-2-2 respectively.
7.2.1 Single fall chain
(1) Remove the stopper from the no load side.
(2) Hook the C-link to the end link.
(3) Hook the end link of the new chain to the C-link.
(4) Operate the hoist to lower the chain.
(5) Stop to lower the chain when a sufficient amount of new chain is accumulated on the load side.
(6) Attach the chain spring or cushion rubber and bottom hook from the old chain to the end of the new
chain on the load side.
(7) Attach the chain spring or cushion rubber and stopper from the old chain to the correct link on the new
chain on the no load side.
7.2.2 Double fall chain
(1) Remove the stopper from the no load side.
(2) Hook the C-link to the end link.
(3) Hook the end link of the new chain to the C-link.
(4) Operate the hoist to lower the chain.
(5) Stop lowering the chain when a sufficient amount of new chain is accumulated on the load side.
(6) Feed the end link on the load side of the new chain through the idle sheave completely.
(7) When connecting the end link to the connection yoke by a chain pin, make sure that the chain is not
twisted throughout the whole links.
(8) Attach the chain spring or cushion rubber and stopper from the old chain to the correct link on the new
chain on the no load side.
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