Workshop Manual S3.8 Engine A030K288 (Issue 2) 01-2010 Premix Coolant in 5 Litre Can. Coolant is ‘Ethylene Glycol’ (Type JIS K 2234 94, Class 2) Coolant is recommended to prevent Corrosion of Engine & Radiator. I t also broadens the Operating Temperature range by Lowering the coolant freezing point & by raising it’s boiling point. TIGHTENING OF CYLINDER HEAD NUTS After every remounting of cylinder head, the cylinder head nuts should be tightened in the sequence as shown in the figure. Clean and oil NOTE threads on the collared nuts as well as on the cylinder head studs prior to figment. Tighten evenly This Premix Coolant Do-Not require, any addition OR mixing of Raw Water.
Coolant is to be used, directly from Coolant Can (Ready To Use) in three stages till the maximum torque is achieved. A special socket must be used for tightening the nuts below the rocker arm shaft. Then adjust intake and exhaust valve clearances Coolant recovery Bottle is to be filled externally, with Coolant. Radiator is to be filled slowly, upto bottom of Fill Neck. to specified valve. Run the engine for approximately one hour, thereafter, retighten cylinder head nuts and recheck Check Coolant Level Daily, before starting Gen-set. CAUTION valve clearances. Repeat the above procedure after 5 to 16 hrs. of operating evertime a cylinder Do-not add cold coolant to hot engine.
Engine castings can be damaged . Allow engine head is refitted. Always fit a new cylinder head gasket and ensure that the marking “TOP” is 0 to cool below 50 C, before adding Coolant. 0 Allow engine to cool below 50 C, before adding Coolant. Failure to do so, can result in personal injury from steamy coolant. Do-Not remove Cap, Radiator, from hot engine. towards the cylinder head side. For removing the cylinder head, loosen nuts in the reverse order of tightening sequence. Do-Not use sealing additives, to stop leaks in the cooling system. This can result in coolant system plugging & inadequate coolant flow, causing, engine to Over heat.
13 13 Operating procedure 15 15 Again operate the engine for 5 mins. with the water temperature above 80°C Shut the engine and drain the cooling system. If the water drained is still dirty, the system must Cylinder head nut tightening sequence be flushed again until the water is clean. 28