Let's consider the malfunctions that may occur during engine operation:

  • - The crankshaft is not turned by the starter;

The GA3-66 vehicle is a two-axle truck, with a payload capacity of 2 tons, all-terrain, with drive on both axles. It is designed to replace the same type of GAZ-63 car produced by the plant

To assemble the engine, as well as to disassemble it, the engine cylinder block assembled with the clutch housing is fixed on a stand (see Fig. 1)

Before assembly, all engine parts are selected according to size, thoroughly washed, blown with compressed air and wiped with clean napkins

  • - it is not necessary to remove the engine to remove the cylinder head
  • - to prevent damage to the paintwork of the wings of the body, it is necessary to use a special coating
  • - to prevent damage to the cylinder head, before removing it, you must wait until the engine cools down

Cylinder block

Checking and adjusting the valve clearance must be done on a cold engine (coolant temperature 20˚С), with the cylinder head mounted on the block

Checking the technical condition of timing parts

Sprockets, hydraulic tensioner, chain guide and tensioner arm

By default, we already have the cylinder head removed

Power units are designed for operation at ambient temperatures from minus 60ºС to plus 50ºС, relative humidity up to 98% at a temperature of 25ºС, air dust content up to 0.4 g / m 3, as well as for movement car in mountainous conditions at an altitude of up to 4500 m above sea level and overcoming passes up to 4650 m above sea level with a corresponding decrease in power and economic indicators.

The cylinder head can be removed with the intake pipe and exhaust manifold. If the cylinder head is removed from an engine installed on a car, you must first perform the following operations:

  • - drain the liquid from the cooling system;

Checking the tightening of the cylinder head mounting bolts

Check the tightening of the cylinder head mounting bolts after the break-in period and every 40 thousand km of run on a warmed-up diesel engine in the following order:

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