Malfunctions of pneumatic drive power supplies

When servicing the pneumatic drive of the car brakes, you must first of all make sure that the system is tight

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

Checking the technical condition of the timing drive

Remove the top cover.

Check the timing belt (A) for damage, oil or coolant ingress

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.

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

Cylinder block

  • - 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

The fuel supply system ensures fuel purification and uniform distribution among the engine cylinders in metered portions and at strictly defined moments in time

The fuel supply system filters the fuel and distributes it evenly among the engine cylinders in metered portions at strictly defined moments

KAMA3-740.50-360, KAMA3-740.51-320 engines, designed for installation on single vehicles and truck tractors used as part of road trains, supplied to the domestic market and for export to countries with a moderate and tropical climate, as well as supplied as spare parts

Tightening torques for diesel connections of KamAZ vehicles

Name

Tightening conditions

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:

Carburetor K-151V (Fig. 1) - vertical, emulsion, two-chamber, with a falling mixture flow and sequential opening of the throttle valves

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

The clutch of the YaMZ-238 model is double-disc, dry, friction type, with a peripheral arrangement of cylindrical springs

Installing cylinder heads, valve rocker arms and adjusting valve clearances

The cylinder head mounting studs are screwed into the right and left rows of the cylinder block, having previously lubricated the threaded holes for the studs in the block with diesel oil

The engine consists of a crank and gas distribution mechanisms, as well as cooling, lubrication, power and control systems, and starting

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

  • - The crankshaft is not turned by the starter;

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