12. OPERATION CHECK DUST INDICATOR 1. Check that the red piston has not appeared in the transparent portion of dust indicator 1 . 2. If the red piston has appeared, clean or replace the element immediately. For details of the method of cleaning the element, see “24.2 WHEN REQUIRED”. AE133080 3. After checking, cleaning, or replacing, press dust indicator 1 to return the red piston to its original position. DRAIN WATER FROM AIR TANK 1. After starting the engine, pull ring 1 of the tank drain valve to drain the water from the tank. 2. Carry out the same operation after completing work.
NOTICE In cold areas, there is danger of the water freezing, so drain the water from the air tank after operations when it is still warm. 2-50