Hitachi ZW 120-6 Operator's Manual page 232

Section
Check Brake Oil Level
Check Parking Brake Force
Check Right and Left Brake Interlocking
Performance
Brake
system Greasing (Brake Pedal)
Greasing (Brake Pedal Linkage)
Change Brake Oil
Check Brake Disks (Service and Parking)
Check Hydraulic Oil Level
Check Cutting Edge
Check Hoses and Lines for Leaks
Check Hoses and Lines for Cracks, Bends,
Etc.
Greasing
Replace HST Charge Filter
Check Ride Control Accumulator
Function, Gas Leakage, Looseness, and
Loading Damage
system
Replace Hydraulic Tank Oil Filter
Replace Air Breather Element
Check Pilot Circuit Accumulator
Function, Gas Leakage, Looseness, and
Damage
Check Gas pressure in Ride Control
Accumulator (Optional)
Change Hydraulic Oil and Clean Suction
Filter
Replace Pilot Circuit Accumulator
f
NOTE:
 *1 Add grease daily during first 50 hours of operation.
In case the machine is engaged in excavation in mud, water or snow, add grease after each work shift.
 *2 After 50 hours of operation, carry out next greasing at the first 250 hours of operation.
Then, carry out greasing every 500 hours of operation afterwards.
Shorten greasing intervals when the machine is operated under severe conditions or when the machine is continuously
operated for a long period of time.
 *4 Hydraulic oil changing interval differs according to the kind of hydraulic oil used.
MAINTENANCE
Item for check
: First time replacement or cleaning only
Operating hours
10 50 100 250 500 1000 2000 3000 4500
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 
*1 *2
Every 4000 hours or once every two years whichever
comes first.
7-14
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*4
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