Check the cylinder head

Check the valve guide

Measuring the length of the valve

Measure the diameter of the valve stem

Measurement of the internal diameter of the valve guide

Measuring the height of protrusion of the valve guide

Replacing the valve guide

Pressing the valve guide

Check and repair the valve seat

Check the valve spring

Checking camshaft

Measure the diameter of the neck of a cam

Measurement of radial clearance of cervical camshaft

Measuring axial clearance of cervical camshaft

Check valve tappet

Checking cylinder

Check valve nozzle maslorazbryzgivayuschego

Checking crankshaft

Measurement of run-out of the crankshaft

Measure the diameter of the necks of the crankshaft

Measurement of radial clearance in the crankshaft bearing

Check the connecting rod side clearance

Measurement of the radial clearance of the connecting rod

Check the bolts

Test the surface of the cylinder head by a color contrast. Using dye penetration, check for cracks in the combustion chambers, intake and exhaust ducts and on the surface of a gas joint (Fig. 2.136).

If there are cracks, replace the cylinder head or brew it (with subsequent grinding).

Check the depth of the valve seat, the radial and axial clearances camshaft bearings (see. Below).

Measure the cylinder head in six directions to detect warpage (Fig. 2.137).

If distortion exceeds the maximum, replace the cylinder head.

The maximum warpage: 0.10 mm.

Maximum polishing: 0.15 mm.