Workshop Manual S3.8 Engine A030K288 (Issue 2) 01-2010 Section 6 LUBRICANTS, FUELS & COOLANT Providing and maintaining an adequate supply of clean, high quality fuel, lubricating oil, grease and coolant in an engine is one way of insuring long life and satisfactory performance. FUELS a small and cheap private filling station. Before refilling, drain off the sediments through the drain cock provident at the bottom of the tank. HS-Diesel oils recommended for use on S 3.8 G series diesel engines confirm to following specification. If the diesel fuel has been split, the affected spots can be cleaned by using a mixture of 25-50% vinegar and 75-50% water (depending on the degree of contamination).
This will help go get rid of the offensive adour. IS 1460 DIN 51601 or equivalent Do not mix kerosene with diesel as a cost reducing measure. This mixture has poor lubricating properties. It causes faster wear and tear of fuel injection equipment components under normal operating conditions. At very low temperatures fluidity of diesel may become insufficient to paraffin separation. It is therefore, necessary to mix supplementary fuel with summer or winter grade diesel. The supplementary fuel to be used is kerosene of aviation turbine fuel. Cleanliness of the fuel influences the efficiency and life of the fuel filters and fuel injection equipment.
It is, therefore, more economical to fill clean fuel into the tank. All precautions should be taken to ensure that no dirt enters the tank while filling the fuel. Ratios for mixing of supplementary fuel and diesel are shown in table : Special precautions if fuel is stored in drums. Ambient Percentage temperature Summer Supple 0C grade mentary diesel fuel 1. Do not roll the drum to the engine to pump the fuel into the tank. The drum must be kept standing for at least 24 hours to allow impurities to settle down. up to 0 100 2.
When placing the suction pump into the drum see that approximately 15 cm distance is left between the bottom of the drum and the end of the suction pipe, so that sediments (dirt, mud, water) are not sucked in. 0 to -10 7030 Ambient Percentage temperature Winter Supple 0C grade mentary diesel fuel 3. The suction bore at the end of the suction pipe must be protected by a fine mesh sieve. 4. Put a piece of clean flannel cloth into filter opening. up to -15 100 0 -15 to -20 70 30 -20 and below 50 50 Care should be taken that diesel and supplementary fuel are thoroughly mixed before filling. 5. Keep suction pump free from dust. Do not place it on the floor.
To ensure that clean fuel is always available for refuelling it is advisable to set up a large tank (containing about 500 to 1000 liters, according to requirement) at a suitable place, thus establishing COOLANTS Presence of dirt in coolant chokes up radiator, water passages in cylinder head and crankcase, thereby causing overheating of engine. 25