The cylinder head is a cast iron casting, in the internal cavities of which there are intake and exhaust channels closed by valves

Intake channels - with a screw profile.

To ensure heat dissipation, the cylinder head has internal cavities in which the coolant circulates

The cylinder head has insert valve seats made of heat-resistant and wear-resistant alloy.

The struts, rocker shaft with rockers, head cover, intake manifold and cover cap, covering the valve mechanism, are installed on top of the cylinder head.

On the left side (from the fuel pump side), four injectors are installed in the head, and on the right side, the exhaust manifold is attached to the head.

To seal the connector between the head and the cylinder block a gasket made of asbestos-free fabric reinforced with perforated steel sheet is installed.

The holes in the gasket for the cylinder liners are edged with sheet steel.

When assembling a diesel engine at the factory, the cylinder holes of the gasket are additionally edged with fluoroplastic split rings.

Fig. 1. Cylinder head, valves and tappets

Name of parts in the picture:

  • - 10.65G.06 Washer
  • - 12.01.08kp.019 Washer
  • - 2.5x10 Pin
  • - 240-1002047 Bolt
  • - 240-1002047-01 Bolt
  • - 240-1002430-B Housing breather
  • - 240-1002444-A Gasket
  • - 240-1003027 Plug
  • - 240-1003029 Bushing
  • - 240-1003031 Gasket
  • - 240-1003032-A Head cover cylinders
  • - 240-1003037 Plug
  • - 240-1003108 Gasket
  • - 240-1003109 Gasket 
  • - 240-1003264-A Gasket
  • - 240-1003281 Plug
  • - 240-1007014-B4 Intake valve
  • - 240-1007015-B6 Exhaust valve
  • - 240-1007020 Cuff sealing
  • - 240-1007032-Б-01 Bushing
  • - 240-1007045-А2 Outer valve spring
  • - 240-1007046-А1 Inner valve spring
  • - 240-1007048 Valve spring plate
  • - 240-1007054 Lower valve spring washer
  • - 240-1007055 Upper valve spring washer
  • - 240-1007151-Б-01 Outer rocker arm axle stand
  • - 240-1007152-Б-01 Stand rocker arm axis middle
  • - 240-1007185 Retainer
  • - 240-1007310-B Rod 
  • - 240-1007375 Pusher
  • - 240-3707200 Plug
  • - 242-3707140-B Reservoir
  • - 245-1003011-01 Cylinder head assembly
  • - 245-1003015-A-01 Cylinder head
  • - 245-1003018 Intake valve seat
  • - 245-1003019 Seat exhaust valve
  • - 245-1003030-G Cylinder head cover in assembly
  • - 245-1003033-G Collector
  • - 245-1003035-G Pipe
  • - 245-1003037 Sleeve
  • - 245-1003122 Cap
  • - KG3/8"A12.019 Plug
  • - M12-6gx85.88.35.019 Bolt
  • - M12-6N.6 Nut
  • - M8-6gx16.88.35.019 Bolt
  • - M8-6gx 20.88.35.019 Bolt
  • - М8-6gх30.88.35.019 Bolt
  • - М8-6gх35.88.35.019 Bolt
  • - М8-6gх80.88.35.019 Bolt
  • - Ф-4.118.3 Ring
  • - ХЧП10-02.019 Clamp 
  • - 245-1014440 Cup
  • - 245-1014445 Oil deflector
  • - 245-3707220-А-01 Reservoir with plug assembly
  • - 36-1104788-01 Gasket
  • - 48-1002318 Washer
  • - 50-1003020-А2-01 Head gasket
  • - 50-1003103-А Cup
  • - 50-1003104-А Cap nut
  • - 50-1003106 Washer
  • - 50-1003107-А Ring
  • - 50-1003112 Stud of rack
  • - 50-1007053-А1 Crack valve
  • - 50-1007102-A Axle
  • - 50-1007103-A Rocker arm axle spring 
  • - 50-1007170-B Adjusting screw with nut assembly
  • - 50-1007175-B1 Adjusting screw
  • - 50-1007182 Rocker arm axle plug
  • - 50-1007183 Washer plugs
  • - 50-1007212-A3 Rocker arm
  • - 50-1015598 Gasket
  • - 50-61-65-0,2(2) Sleeve-part
  • - 8.01.08kp.019 Washer
  • - 8.65G.06 Washer
  • - DO2-003-A Plug
  • - DO2-063 Nut
  • - KG1/8"A12.019 Plug

Valve rocker arms - steel, swing on an axis mounted on four racks.

Extreme racks - increased rigidity.

The rocker arm axis is hollow and has eight radial holes for supplying oil to the rocker arms.

The movement of the rocker arms along the axis is limited by spacer springs.

The intake and exhaust valves are made of heat-resistant steel.

They move in guide bushings pressed into the cylinder head.

Each valve closes under the action of two springs: outer and inner, which act they blow on the valve through a plate and crackers.