PERIODIC SERVICE 18 ENGLISH B Changing coolant 1. To drain coolant, always open both drain cocks and simultaneously open the radiator cap as well. With the radiator cap kept closed, a complete drain of water is impossible. 2. Remove the overflow pipe of the radiator pressure cap to drain the recovery tank. 3. Prescribed coolant volume (U.S.gallons) B Checking radiator hoses and clamp bands To avoid personal injury: A Be sure to check radiator hoses and clamp bands periodically. If radiator hose is damaged or coolant leaks, overheats or severe burns could occur. Check to see if radiator hoses are properly fixed every 200 hours of operation or 6 months, whichever comes first. 1.
If hose clamps are loose or water leaks, tighten hose clamp securely. 2. Replace hoses and tighten hose clamps securely, if radiator hoses are swollen, hardened or cracked. Replace hoses and hose clamps every 2 years or earlier, if checked and found that hoses are swollen, hardened or cracked. A Coolant quantities shown are for standard radiators. 4. An improperly tightened radiator cap or a gap between the cap and the seat quickens loss of coolant. 5. Coolant (Radiator cleaner and anti-freeze) B Precaution at overheating The event that the coolant temperature is nearly or more than the boiling point is called "OVERHEATING" .
While running, make the following checks to see that all parts are working correctly. If anything is unusual, inspect it, referring to the relevant description in "MAINTENANCE" and "PERIODIC SERVICE" section. B Remedies for quick decrease of coolant 1. Check any dust and dirt between the radiator fins and tube. If any, remove them from the fins and the tube. 2. Check the tightness of the fan belt. If loose, tighten it securely. 3. Check the internal blockage in the radiator hose. If scale forms in the hose, clean with the scale inhibitor or its equivalent.
C Coolant If the coolant temperature warning lamp lights up or if steam or coolant does not stop squirting from the radiator overflow pipe, turn off the load and keep the engine idling (COOLING-DOWN) for at least 5 minutes to let it cool down gradually. Then stop the engine and take the following inspection and servicing. 1. Check to see if the coolant runs short or if there is any coolant leak; 2. Check to see if there is any obstacle around the cooling air inlet or outlet; 3. Check to see if there is any dirt or dust between radiator fins and tube; 4. Check to see if the fan belt is too loose; and 5. Check to see if radiator water pipe is clogged.
B Cleaning radiator core (outside) If dust is between the fin and tube, wash it away with running water. A Do not clean radiator with firm tools such as spatulas or screwdrivers. They may damage specified fin or tube. It can cause coolant leaks or decrease cooling performance. Models Quantity D1503-M-E,D1703-M-E 5.5 L (1.45 U.S.gals.) D1803-M-E 5.8 L (1.53 U.S.gals.) V2003-M-E,V2203-M-E 8.1 L (2.14 U.S.gals.) V2003-M-T-E,V2403-M-E 8.4 L (2.22 U.S.gals.) Season Coolant All seasons Pure water and anti-freeze (See "Anti-freeze" in "RADIATOR" section.)