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2 - 4
Every 250 Operating Hours or Monthly
Whichever occurs first
1
Do a 100 hour service plus:
2
Clean
a
Drain water and deposits from hydraulic oil tank.
b
Air cleaner dust valve.
3
Grease
a
Door and canopy hinges.
b
Slew ring bearing.
4
Change
a
Engine oil.
b
Engine oil full flow filter element.
5
Check (Engine Stopped)
a
Battery electrolyte level.
b
Security of major unit mounting bolts and nuts.
If loose, tighten to specified torque.
c
Track gearbox oil level.
d
Fan belt adjustment.
e
Air inlet system security
Every 500 Operating Hours or 3-Monthly
Whichever occurs first
1
Do a 250 hour service plus:
2
Clean
a
Radiator, grille and oil cooler fins.
3
Grease
a
Slew ring teeth.
4
Change
a
Fuel filter element.
5
Check (Engine Stopped)
a
Exhaust system security.
b
Top and bottom track rollers for oil leaks.
c
Track idler wheels for oil leaks.
d
Hydraulic oil (check the degradation and cleanliness
by sampling).
e
Seat belt condition and security.
f
Teeth and sidecutters.
6
Check (Engine Running)
a
Operation of throttle system.
b
Operation of overload warning.
c
Operation of stop control.
Every 1000 Operating Hours or 6-Monthly
Whichever occurs first
1
Do a 500 hour service plus:
2
Clean
a
Fuel lift pump strainer.
b
Hydraulic fluid suction strainer.
3
Change (Engine Stopped)
a
Engine air filter element (outer).
b
Hydraulic tank air breather element.
c
Track gearbox oil.
d
Return filter element.†††
e
Nephron filter.†††
f
Servo oil filter element.†††
g
Drain filter.†††
4
Check (Engine Stopped)
a
Track wear.
Every 2000 Operating Hours or Yearly
Whichever occurs first
1
Do a 1000 hour service plus:
2
Check (Engine Stopped)
a
Sample hydraulic oil and replace if necessary.
3
Grease
a
Slew gearbox
4
Change
a
Hydraulic fluid suction strainer.
b
Engine air filter element (inner).
Every 4000 Operating Hours or 2 Years
Whichever occurs first
1
Do a 2000 hour service plus:
2
Change
a
Top and bottom track roller oil
b
Long life coolant.
c
Fuel hose (fuel tank - engine).
d
Fuel hose (fuel filter - injection pump).
e
Hydraulic pump exit hose (pump - operation valve).
f
Boom ram line hose.
g
Dipper ram line hose.
h
Bucket ram line hose.
†††
Refer to Service intervals for Hydraulic Oil and Filters
when using a Breaker.
Section 3
Routine Maintenance
9803/6020
Section 3
2 - 4
Issue 1
Service Schedules
Summary of Contents for JS70
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Page 189: ...Section E Section E Hydraulics 9803 6020 Issue 1 33 4 33 4 Control Valves Control Valve 291360...