Method For Cleaning Inside Of Cooling System - Komatsu D37EX-24 Operation & Maintenance Manual

MAINTENANCE
NOTICE
• If the outer element and cover are installed while the inner element is not installed properly, the
outer element may be damaged.
• Do not clean and reuse the inner element. When replacing the outer element, replace the inner
element with new one at the same time.
• The sealing portion of the improper part lacks precision, and allows the entry of dust, which
leads to damage of the engine. Do not use such improper part.
5.
Remove the inner element (3), then install the new inner element immediately.
Install the inner element securely so that it does not move.
6.
Install the new outer element (4).
NOTICE
When installing the cover (2), press it to the case securely, and check that clips (1) are secured cor-
rectly at 3 places.
7.
Replace the O-ring (6) of cover (2) with a new one.
8.
Set the arrow mark on cover (2) at the top, install it to the
air cleaner body, then secure it with clip (1).
9.
Replace the seal stuck to cover (2) with a new one.
10. Close the engine side cover on the left side of the ma-
chine.

METHOD FOR CLEANING INSIDE OF COOLING SYSTEM

• Immediately after the engine is stopped, the coolant is still hot and the pressure is accumulated in
the radiator. If the cap is removed under this condition and the coolant is drained, it may cause
burns. Always wait for the temperature to go down, and turn the cap slowly to release the pressure.
• Start the engine and clean it. When standing up or leaving the operator's seat, lock the parking
brake lever and work equipment lock lever.
• For starting the engine, see "CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE (3-121)" and
"METHOD FOR STARTING ENGINE (3-150)".
• It is very dangerous to go under the machine for cleaning while the engine is running, since the ma-
chine may move unexpectedly. While the engine is running, never go under the machine.
Place the machine on a level ground when cleaning or changing the coolant.
For cleaning the inside of the cooling system and changing the coolant, see the following table.
k k
WARNING
MAINTENANCE PROCEDURE
4-17