Workshop Manual S3.8 Engine A030K288 (Issue 2) 01-2010 viii. Clean the drain plug of the engine oil sump Starting the Engine and refit with a new sealing washer if necessary. Tighten to 4 to 6 Kg-m. torque. Starting requires the clean air & fuel to be supplied to the combustion chambers in proper quantities at the correct time. ix. Fill in 8 liters of engine oil into the sump. x. Start engine and allow it to run for a few minutes and stop. Engine Warm-up xi. After 2° minutes check level of oil indicated When the engine is started, it takes a while to get the lubricating oil film re-established between shafts and bearings and between pistons and liners.
The most favourable clearances between moving parts are obtaining only after all engine parts reach normal operating temperature. Avoid seizing pistons in liners and running dry shafts in dry bearings by brining the engine up to operating speed gradually as it warms up. on the dipstick. It should be at the upper mark and if not, top up. xii. Check oil level in fuel injection pump and governor. Top up, if necessary. Caution : Make sure that only genuine oil filter cartridge is used. Inspection of non genuine filter cartridges available in the market at low prices have revealed: Oil Temperature i. Use of inferior filtering material which cannot properly filter the engine oil.
The oil temperature gauge normally should read between 167 ° F (75 ° C) and 221 ° F (1°5 ° C). Under full load conditions, an oil temperature of 24° ° F (116 ° C) for a short period is not a cause for alarm. ii.Improper dimensions which cannot prevent filtered oil getting mixed with unfiltered oil. Caution : Any sudden increase in oil temperature which is not caused by load increase is a warning of possible mechanical failure and should be investigated at once. Since it is extremely difficult to distinguish between genuine and non-genuine filter elements, obtain these only from Cummins Dealers. PREPARING THE ENGINE FOR A OPERATION PREPARING THE ENGINE FOR A DAY'S WORK Check the following :
During warm-up period, apply load gradually until oil temperature reaches 14° ° F (6° ° C). While oil is cold it does not do a good job of lubricating. Continuous operating or long periods of idle with oil temperatures below 14° ° F (6° ° C) may cause crankcase dilution and acids in the lubricating oil which quickly accelerate engine wear. 1. Fuel level in fuel tank, Top up, if necessary and secure cap. 2. Engine oil level - First thing in the morning or at least 2° minutes after stopping the engine. Top up, if oil level is less than midway between minimum and maximum marks. Water Temperature The oil Should not exceed the maximum level mark. Use only approved brand of oil.
A water temperature of 167 ° to 2°3 ° F (75 ° C to 95 ° C) is the best assurance that working parts of the engine have expanded evenly to the most favourable of clearances. Maximum engine coolant temperatures should not exceed 2°3 ° F (95 ° C).Keep thermostats always in the engine, avoid long period of idling and take necessary steps to keep water temperature up to a minimum of 167 ° F (75 ° C). If necessary in cold weather, use radiator shutters or cover a part of the radiator to prevent overcooling. 3. Radiator coolant level. Top up, if necessary and secure radiator cap. 4. Condition and tension of fan belt. Adjust tension, if necessary. 5. All gauges, for proper functioning. 6.
Leakage of coolant, fuel or oil at all joints of hoses and pipes and rectify, if necessary. 12