MAINTENANCE PROCEDURES
239
q
In machines equipped with breaker hydraulic oil deterio-
rates more rapidly than in machines used for simple dig-
ging operations.
Change the oil following the instructions given in the table.
(B): Hydraulic oil replacement interval.
(X): Hydraulic breaker - use percentage (%).
(Y): Change interval (H).
4.9.8.b CHANGING THE COOLANT
q
The coolant must be changed every 2000 hours of operation or every 2 years, whichever occurs first.
q
Soon after the machine has been stopped the coolant is very hot and under pressure and it may cause
serious burns; let the engine cool down until it reaches approximately 40–45°C before changing the
coolant.
q
Slowly loosen the radiator cap, in order to release any residual pressure.
q
Oils, filters, the coolant and the battery are considered special waste and must be collected and dis-
posed of according to the regulations in force.
q
The change of the permanent coolant does not require any
washing cycle for descaling the circuit.
1. Open the engine hood and the radiator cover. For further
details, see paragraphs "3.2.6 ENGINE HOOD" and "3.2.7
RADIATOR COVER".
2. Remove the screws (1) and remove the radiator cap panel on
the right side of the machine.
0 20 40 60 80 100
(%)
500
2000
(H)
RKA27960
1500
1000
B
Y
X
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