6-MAINTENANCE
Replacingthehydraulicltersanduid
whenahydraulicbreakerisused(optional)
Whenusingthehydraulicbreaker,hydraulicuiddeteri-
oratesmorequicklythanduringordinarydigging.Check
thehydraulicuidlevelmorefrequently.Inaddition,when
changingthelters,alsochecktheconditionofthehy-
draulicuid.
Usingthefollowinggraphasareference,determinethe
intervalsforchangingthehydraulicuidandlters,de-
pendingonthefrequencyofuseofthehydraulicbreaker.
Percentageofuse
100%40%20%10%
Intervalinhours1010060010300150010600300108004000
Servicepoints
Hydraulicuid(1)(3)(1)(3)(1)(3)(1)(3)
Returncircuitlter
(3)(3)(3)(3)
Suctionlter
(2)(3)(2)(3)(2)(3)(2)(3)
Pilotlter
(3)(3)(3)(3)
Hydraulicuidcondition
200H300H600H800H
(1)Checkthelevel
(2)Cleanorreplace
(3)Replace
Checkingthehydraulicsystempiping
Makesuretherearenoleaksfromthehydraulicsystem
hoses,pipes,plugs,connectionsandttingsandcheck
thatallnutsandscrewsarecorrectlytightened.Inthe
eventofproblems,repair,changeortightenthecompo-
nent(s)concerned.
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