1. Remove external components and electric switches / sensors from the block. For full cleaning, ideally, also hollow caps have to be removed. Caps are removed as follows. Drill a small opening in a cap, then insert into it the self-tapping screw. Take traffic jams, having grasped self-tapping screws with flat-nose pliers or pincers. Also to an otboltita from the crankshaft of 4 oil nozzles (on B204/B234 engines).
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2. Scratch out all traces of old sealant from the block of cylinders / case - be careful, do not damage pro-masonry / sealing surfaces. 3. Remove caps of oil galleries (where are established). Caps usually sit very densely - as a last resort caps can be drilled, and carvings in openings are restored by a tap. At assembly of the engine establish new caps. 4. In case of strong pollution of the block of cylinders / case it is necessary to subject it to steam cleaning. 5. Clean all oil openings and oil galleries and wash out internal cavities warm water - continue washing until clear water goes. Carefully dry and, in order to avoid a rzhavleniye, grease with a thin film of oil all interfaced surfaces. Grease also mirrors of cylinders. In case of existence of access to compressed air use it for drying process acceleration, blow also compressed air all oil openings and galleries. 6. In case the block of cylinders is polluted not really strongly, normal cleaning can be carried out by means of hot (so on how many you can bear), soap water and a rigid brush. Do not feel sorry for time and work for carrying out this work. Irrespective of the chosen method of carrying out cleaning, make sure of care of cleaning of all oil openings and galleries, and also of care of drying of all components. In conclusion make protection of mirrors of cylinders against corrosion as it is described above. |
7. For ensuring correctness of effort of tightening of threaded connections all carving openings have to be smoothed out by means of taps. For cleaning of carvings insert a tap of the required size into an opening and remove traces of a rust, corrosion, sealant for fixing of carvings or pollution; also it will help to correct a situation at violation of a carving. If there is an opportunity, use compressed air for cleaning of carving openings of the shaving formed during a procedure of cleaning. Injection aerosols of water disperse lubricant in each opening through the long tubule which is usually enclosed complete with аэрозолью will be a good alternative.
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8. Apply suitable sealant on new caps of oil galleries and insert caps into an opening in the block of cylinders. Strong tighten caps. Establish and tighten oil nozzles in the lower part of a case on B204/B234 engines. 9. If the engine is not subject to immediate dismantling, for maintenance it in purity cover the engine with a big plastic casing; in order to avoid formation of a rust make protection of all interfaced surfaces and mirrors of cylinders in the way described above. |
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