Komatsu 37BF50111, Руководство по эксплуатации и техническому обслуживанию

Страница: 202 / 244

MAINTENANCE PROCEDURE
200
4.8.10 MANUTENZIONE OGNI 2000 ORE
Carry out these operations together with those to be performed EVERY 50, 250, 500 and 1000 HOURS.
4.8.10.a CHANGING THE COOLANT
WARNING
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 approxi-
mately 40-45ºC before changing the coolant.
q
Slowly loosen the radiator cap, in order to release the
residual pressure.
q
Oils, filters, coolants and batteries are considered spe-
cial waste and must be collected and disposed of ac-
cording to the anti-pollution regulations in force.
IMPORTANT
q
The change of the permanent coolant does not require
the descaling of the circuit.
Before changing the coolant, lift the loader arm and secure it
with the safety lock (see "3.1.1 LOADER LOCKS").
1 - Raise the engine hood (see "3.5.1 ENGINE HOOD") and
open the rear panel (see "3.5.2 REAR PANEL").
2 - Loosen and remove the upper cap (1) of the radiator.
3 - Open the drain cock (2) of the radiator, remove the drain
plug (3) positioned on the engine block and let the fluid
flow out. Use a 17 mm hexagon spanner.
While the fluid flows out, drain the coolant tank (4).
4 - Close the drain cock (2), the plug (3) on the engine block
and fill the radiator with new fluid (see "4.3 FUEL, COO-
LANT AND LUBRICANTS").
5 - Start the engine and let it idle for a few minutes; check the
level again and if necessary top up before putting back
the upper cap (1).
6 - Fill the tank (4) until reaching the maximum level.
7 - Close the rear panel and the engine hood.
RWAB0050
RWAA10060
1
RWAA10070
2
3
RWAA10080
RKAB1630
4
MAX
MIN