Hyundai r35z-7 Workshop Manual page 299

(2) Disassembly of holding valve(Boom 1)
Loosen hexagon socket head bolts(120).
(Hexagon wrench : 5mm)
Remove the holding valve.
Pay attention not to lose the O-ring and
the poppet under the pilot cover.
Pay attention not to damage the "piston
A" under pilot cover.
When any abnormal parts are found,
replace it with completely new holding
valve assembly.
When disassembled,
components for identification so that they
can be reassembled correctly.
tag the
7-39
120
R35Z77MCV13
Holding valve
R35Z77MCV14