(1) Remove main hydraulic filter from
hydraulic reservoir (Para 20-9).
(2) Inspect filter and relief valve for
excessive contaminants clogging filter
and relief valve.
(a) If filter is clogged, replace filter.
(b) If relief valve is clogged, clean or
replace relief valve.
(c) If filter and relief valve are not
clogged with debris, perform
Step (3) below.
(3) Install main hydraulic filter in hydraulic
reservoir (Para 20-9).
(1) Operate fan, LHS, winch and crane
(a) If fan, LHS, winch, and crane do
not operate, fault not corrected.
Turn OFF ENGINE switch and
notify DS Maintenance.
(b) If fan, LHS, winch and crane
operate, fault has been corrected.
(2) Turn OFF ENGINE switch.