Hitachi ZW140-6 Operator's Manual page 269

Base Machine
Hydraulic
System
Front
Attachment
Cab
f
NOTE: Be sure to replace seals, such as O-rings and gaskets,
when replacing hoses.
MAINTENANCE
Periodic Replacement Parts
Pump suction hose
Hydraulic hose (Main pump to main valve)
Hydraulic hose (Fan pump to fan motor and fan valve)
Hydraulic hose (Pilot pump to charging valve)
Hydraulic hose (HST high pressure circuit hose)
Hydraulic hose (HST cooler line hose)
Hydraulic oil tank return hose
Hydraulic oil cooler line hose
Hydraulic hose (Valve to hydraulic oil tank return hose)
Lift arm cylinder line hose
Bucket cylinder line hose
Pilot hose
Seat belt
7-17
Replacement Intervals
Every 2 years or 4000 hours
whichever comes first
Every 3 years