Table of Contents
Advertisement
SERVICE PROCEDURE
Antifreeze is flammable, so keep it away from flame.
Antifreeze is toxic. When removing the drain plug, be careful not to get water containing antifreeze on
you. If it gets in your eyes, flush your eyes with large quantities of fresh water and see a doctor at once.
Use city water for the cooling water.
If river water, well water or other such water supply must be used, contact your Komatsu distributor.
We recommend use of an antifreeze density gauge to control the mixing proportions.
Prepare a container having capacity of at least 60 liters (15.85US gal)to receive the antifreeze solution.
1.
Stop the engine.
2.
Turn radiator cap (1) slowly until it hits the stopper and by
so doing, relieving the internal pressure.
3.
Turn radiator cap (1) until it hits the next stopper, while
depressing it. Keep turning the radiator cap (1) until it hits
the last stopper.
4.
Place a container to receive the antifreeze solution under
drain valve (2) on the underside of the radiator and drain
plug (3) on the side of the cylinder block.
Open drain valve (2) and remove drain plug (3) to drain
the antifreeze solution.
5.
After draining the antifreeze solution, close drain valve (2) and tighten drain plug (3), then pour city water.
After the radiator is filled with the water, start and run the engine at low idling speed. After the water temper-
ature rises above 90°C, run the engine for about 10 minutes.
6.
Stop the engine and open drain valve (2) and remove drain plug (3) to drain the water.
7.
After draining the water, clean the cooling system with cleaning agent.
For the cleaning method, see the instructions for the cleaning agent.
8.
Close drain valve (2). Wind seal tapes onto drain plug (3), then tighten it.
9.
Add water through the water filler up to the filler port.
10. After the engine warming up, check that each gauge and caution lamp are in normal condition. If any abnor-
mality is found, carry out adjustment or repairs.
Operate the machine under a light load until the engine water temperature gauge (2) points to the white
range (monitor panel spec.) or the green range (gauge panel spec.).
To remove the air in the cooling water, run the engine for 5 minutes at low idling, then for another 5 minutes
at high idling. (While doing this, leave the radiator cap removed).
4-26
WARNING
MAINTENANCE
Advertisement
Chapters
Table of Contents
