GENERAL 20 3.1.3 RECOMMENDED FUEL High Speed diesel conforming to IS1460 or EN 590 or equivalent is recommended to be used as fuel. At very low temperature, fluidity of diesel may become insufficient due 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 or aviation turbine fuel. Ratio for mixing of supplementary fuel and diesel are shown in the table. Outside ambient Temp up to ºC Percentage (%) Summer Grade Diesel Supplementary Fuel Upto 0ºC 100 0 0 ºC to - 10 ºC 70 30 -10 ºC to -15 ºC 50 50 Care should be taken that the diesel and supplementary fuel are thoroughly mixed before filling. Outside ambient Temp up to ºC Percentage (%) Winter Grade Diesel Supplementary Fuel Upto -15ºC 100 0 -15 ºC to - 20 ºC 70 30 -20 ºC and above 50 50 !! WARNING Do not mix gasoline or alcohol with diesel. This mixture can cause explosion. 3.2 GENERAL FITTING REMINDERS 3.2.1 WORKSHOP SAFETY Refer the Section Precautions for Workshop Safety related advises and directions. 3.2.2 PREPARATION 1. Clean components and surrounding area prior to removal. 2. Plug off any openings exposed by component removal using greaseproof paper and masking tape. 3. Immediately block fuel, oil or hydraulic lines when separated, using plastic caps or plugs, to prevent loss of fluid and entry of dirt. 4. Close open ends of oil-ways, exposed by component removal, with tapered hardwood plugs or readily visible plastic plugs. 5. Once a component is removed, place it in a suitable container; use separate containers for each component and its associated parts. 6. Before dismantling a component, clean it thoroughly. 7. Clean bench and keep labels, markers ready before dismantling. 3.2.3 DISMANTLING 1. Observe cleanliness when dismantling components, particularly when brake, fuel or hydraulic system parts are being worked on. A particle of dirt or a cloth fragment could cause a dangerous malfunction if trapped in these systems. 2. Blow out all tapped holes, crevices, oil-ways and fluid passages with an air line. Ensure that any “O-rings” used for sealing are correctly replaced or renewed, if disturbed. 3. Use marking ink to identify mating parts, to ensure correct reassembly. If a centre punch or scriber is used, they may initiate cracks or distortion of components. 4. Wire together mating parts where necessary to prevent accidental interchange (e.g. roller bearing components). 5. Wire labels on to all parts which are to be renewed, and to parts requiring further inspection before being passed for reassembly; place these parts in separate containers from those containing parts for rebuild. 6. Do not discard a part due for renewal until it has been compared with the new part, to ensure that its correct replacement has been obtained.
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