Hyundai 110D-7E Operating Manual page 346

Take out the spool, as straight as possible.
Even very little force on the spool while
disassembling & assembling could make
deformation on the spool.
Prepare all components before starting
reassembling spool control kit.
Fit aluminum kit to the body with 5mm
wrench by 1.0kgf·m(7.2lbf·ft).
Replacing relief valve
(3)
Prepare a new relief valve.
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