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Engine Overhaul

It is not always easy to come to a conclusion about the advisability of engine overhaul as necessary based on a number of indicators.

The big run is not a sufficient indicator of the need for major repairs, on the other hand, small run does not exclude overhaul. The most important indicator most likely is timeliness of current maintenance of the engine. At timely change of oil and air filters, as well as the implementation of all other necessary works on service, the engine serves reliably throughout many thousand kilometers. On the contrary, the lack of maintenance can cause a sharp reduction in resources. Increased consumption of oil specifies in deterioration of piston rings or valve guides. Make sure that the leak did not cause increased oil consumption, and only after that to do a conclusion about unfitness of piston rings and directing plugs. To determine the volume of forthcoming works, spend compression measurement in cylinders, or check the tightness of the combustion chamber, which is recommended to turn to experienced professionals.

The oil pressure can be checked by removing the sensor (arrow) and screwing in its place an adapter pressure gauge (4-cylinder engines).

The 6-cylinder engine sensor (arrow) is located in front of the engine, the oil cooler on the adapter.

If the engine is tapped increased noise or knocking, the probable cause of the connecting rod can be wear or indigenous inserts.

Turn out the regular gauge and measure the oil pressure gauge, compare the value obtained with the specified in the manual. If the pressure is low, it may cause wear on bearings or the oil pump.

Power loss, "failures" of the engine, increased noise from the timing, increased fuel consumption point to the need for major repairs, especially if all of these factors occur simultaneously. If performance of all adjustments does not improve, then the most appropriate means of eliminating a remont.Kapitalny repair is to restore parts of the engine to a condition specified in the technical data for the new engine. During the overhaul replaced piston rings and cylinder walls chiseled till the repair size (or Honningbrew).

After repair of cylinders installation of new pistons need. Rods and radical loose leaves must also be replaced, if necessary, the crankshaft should be refinished to restore the gap with a rod and indigenous inserts. Typically, the valve mechanism is not changed, as his state of repair at the time it is usually satisfactory. During engine overhaul and repair of such units is carried out as the carburetor, distributor, starter and alternator. As a result, the engine should possess qualities of almost new unit and smoothly serve long time.

Before starting engine overhaul read the description of the relevant procedures, make an impression of forthcoming amount of works and requirements to them. Overhaul is simple, but time consuming. Roughly it is required not less than two weeks, especially if for repair and restoration of components (grinding, boring) will have to address in a specialized workshop. Check the availability of spare parts and in advance take care of acquisition of necessary special tools and equipment.

Almost all the work can be performed using a standard set of tools, but to test and determine the suitability of those or other details need precise measuring instruments. Often the inspection of the parts is carried out in specialized workshops, which give recommendations for replacement parts or restoration.

Contact the service center workshops follows only after full dismantling of the engine and check all parts, especially the block of cylinders to solve which operations on service and repair will be carried out in workshops.

In conclusion, the assemblage of any units should be carried out with great care in a clean room to avoid further refusals of the repaired engine.