Komatsu HB365LC-3 Operation & Maintenance Manual page 371

MAINTENANCE
5.
Remove the undercover (3).
6.
Place a container under the drain valve (4) on the radiator
side to catch the coolant mixture.
7.
Open the drain valve (4) to drain the coolant.
8.
After draining the coolant, close the drain valve (4) and
add city water.
Pour water until it fills the radiator.
9.
Start the engine.
For starting the engine, see OPERATION, MACHINE OP-
ERATIONS AND CONTROLS, "METHOD FOR OPERA-
TIONS AND CHECKS BEFORE STARTING ENGINE
(3-174)", and "METHOD FOR STARTING ENGINE
(3-177)".
10. Set the swing lock switch to ON position and check that
the swing lock pilot lamp is lit.
11. To complete the warm-up operation of the hydraulic component more quickly, set the working mode to P
mode (heavy-duty mode).
For the working mode setting, see "METHOD FOR SE-
LECTING WORKING MODE (3-199)".
12. Move the lock lever slowly and steadily to FREE position
(F), then raise the bucket from the ground.
MAINTENANCE PROCEDURE
4-23