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TROUBLESHOOTING engine , and their methods .Chast 2.

-------------------------------------------------- ------- increased oil consumption -------------------------------------------------- ------- 1. Flow of oil through the engine seals ................. ............... Tighten krrepleniya and, if necessary, replace gaskets or seals -------------------------------------------------- ------- 2. Clogging of the crankcase ventilation system .................. ............... Clean the ventilation system -------------------------------------------------- ------- 3. Wear of piston rings ................................. ............... Replace worn-out ring -------------------------------------------------- ------- 4. Excessive wear of pistons and piston skirts groove ..... ............... Replace the piston -------------------------------------------------- ------- 5. Excessive wear in the engine cylinder .................. ............... Replace sleeves, pistons and rings -------------------------------------------------- ------- 6. The occurrence of the piston ring grooves in the pistons .......... ............... Loosen the ring and clean the grooves of pistons of carbon -------------------------------------------------- ------- 7. Breakage of piston rings ............................... ............... Replace rings -------------------------------------------------- ------- 8. Slots in the coking valve stem grooves ....... ............... Clean cuts from scale -------------------------------------------------- ------- 9. Excessive wear of valves rods .................... ............... Replace valves and rubber seals Ring -------------------------------------------------- ------- 10. Excessive wear valve guides ........ ............... Perform repair cylinder heads, Replace the sleeve valve -------------------------------------------------- ------- knocking of the engine crankshaft -------------------------------------------------- ------- Knocking of the engine crankshaft is deaf metal tone, whose frequency increases with increasing frequency engine speed. Excessive axial clearance crankshaft of the engine noise is more dramatic tone with irregular intervals, especially noticeable with smooth accelerating or decelerating. -------------------------------------------------- ------- 1. Excessively early ignition timing ....... ............... Adjust the ignition timing -------------------------------------------------- ------- 2. Work at an inappropriate oil ..................... ............... Change the oil -------------------------------------------------- ------- 3. Not enough pressure and oil flow ................. ............... Check operation of oil pump and reducing valve, if necessary, correct faulty pump and relief valve. Check The gap between the main and connecting rod journals and relevant inserts. Check whether the channels are not blocked lubrication system -------------------------------------------------- ------- 4. Excessive clearance between the liner and the journals of indigenous bearings .............................................. ............... Remove the engine crankshaft, inspect and measure the ear and neck of main bearings, proshlifuyte neck and, if necessary, replace the liner -------------------------------------------------- ------- 5. Eccentricity and ovality of indigenous journals ............. ............... Remove the crankshaft, check the diameter Alignment and indigenous journals, proshlifuyte them and replace liners -------------------------------------------------- ------- 6. Excessive clearance in the thrust washers ..................... ............... Check the gap and replace the thrust washers with the new thicker -------------------------------------------------- ------- 7. The weakening of the bolts attaching the flywheel to crankshaft ......................................... ............... Tighten the recommended torque -------------------------------------------------- ------- connecting rod bearing knock -------------------------------------------------- ------- Knocking rods has a sharp, metallic tone than knocking main bearings. Knocking is usually seen at work the engine idling in neutral position of the lever shifting and increases with increasing frequency engine speed. Knocking rods can be easily define, disabling one by one spark plug. -------------------------------------------------- ------- 1. Work at no relevant oil .................... .............. Change the oil -------------------------------------------------- ------- 2. Lack of oil pressure .......................... .............. Check operation of oil pump and reducing valve, if necessary, correct pump fault and a pressure reducing valve. -------------------------------------------------- ------- 3. Excessive clearance between the connecting rod crankshaft journals and inserts ............................................. .............. Dismantle the engine and check the wear of the connecting rod journals and crankshaft bearings, if necessary, replace Ear and neck pereshlifuyte -------------------------------------------------- ------- 4. Ovality or taper crank crankshaft journals .............. Dismantle the engine, connecting rod pereshlifuyte cervical and replace liners -------------------------------------------------- ------- 5. Deviation from parallelism of the axes of the upper and lower heads rod ................................................. .. .............. Disassemble the piston-rod group and restore parallelism -------------------------------------------------- -------
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