WHEN REQUIRED WHEN REQUIRED a. CLEAN INSIDE OF COOLING SYSTEM Corrosion resistor l Clean the inside of the cooling system, replace the antifreeze, and replace the corrosion resis- l Change water after first parking the machine on a level surface. tor, according to the table. Stop the engine, tighten up corro- sion resistor valve (I), and turn cap (2) slowly until it comes off. Open drain valve (3) of the radia- tor, valve (4) of the oil cooler and valve (5) on the side of cylinder block to drain off the cooling water. After draining the cooling water, close up drain valves (31, (4) and (51, and pour in soft water (ex: city water) up to the vicinity of the water filler.
Cleaning inside of cooling system and replacing antifreeze Type of antifreeze solution Replacing corrosion resistor Permanent type antifreeze Every year (autumn) or Every 1000 hours and when every 2000 hours whichever cleaning the inside of the comes first cooling system and when replacing antifreeze Other permanent type antifreeze of eltylene glycol base Every 6 months (spring, Every 1000 hours and when autumn) cleaning the inside of the Change antifreeze only cooling system and when in autumn replaceng antifreeze When not using antifreeze Every year (autumn) or Every 1000 hours and when every 2000 hours whichever cleaning the inside of the comes first cooling system w-04315 - 105-