The timing belt is one of the main in the engine drive. Its main job is to synchronize the rotation of the crankshaft and camshaft. Therefore, you should periodically monitor its technical condition and, if defects are found, replace it. In addition, it should be properly tensioned so that it can be fully exploited.
Necessary
- - key for 10;
- - key for 13.
Instructions
Step 1
Check the technical condition of the timing belt. Its surface of the toothed part should have a clear profile of the teeth, not be worn out, not have cracks, folds, peeling of fabric from rubber and undercuts. Pay attention to the integrity of the end surfaces, they should not show any loosening and delamination, only a slight protrusion of the fringe of the fabric is allowed. Examine the surface of the outer flat part, it should be flat, free from cracks, folds, bulges and depressions. The timing belt must be free of engine oil. If you find any of the defects, replace it.
Step 2
Remove the alternator and pump drive belt and then the upper protective cover. Set the first cylinder to TDC by aligning the mark on the crankshaft pulley with the middle mark on the protective cover, and the mark on the camshaft pulley with the mark on the cylinder head cover. Unscrew with a socket head 10 nuts of the middle and lower protective caps and remove them. Disconnect the spring, loosen the bolts and slide the tension roller bracket to the left until it stops. Remove the timing belt.
Step 3
Check the belt tensioning mechanism. To do this, inspect the working surface of the roller, it should be smooth and free of burrs and nicks. Its bearing should rotate smoothly and smoothly. Check the elasticity of the tension spring, if it is loose, replace it. Install a new belt. To do this, put it on the crankshaft toothed pulley and, pulling, put it on the oil pump drive pulley, and then on the camshaft pulley. Putting the belt on the tensioner roller, install the spring by pushing the bracket to the right. Keep the timing belt taut and turn the crankshaft two turns without jerking. Do not loosen it when stopping the shaft. At this point, the spring will automatically set its tension. Secure the bolts. Check the alignment of the marks on the crankshaft and camshaft. If they do not match, reinstall the belt. Replace the protective covers and tighten the nuts.
