• Home
  • GAZ-66
  • GAZ-2705
  • UAZ 3151
  • ZIL-5301
  • Kamaz
  • GAZ-3110 (Volga)
  • MAZ
  • Engines

Select your language

  • Русский
  • Қазақша (kk-KZ)
  • Українська (Україна)
  • Español (España)
  • German (DE)
  • English (UK)

Engine repair

Maintenance of diesel fuel filters YaMZ-238

Draining sediment from the coarse fuel filter, washing the filter

Unscrew the drain plug 6 (Fig. 1), drain the sediment from the filter.

Adjustment of injection pump models 806 and 807

Before starting the adjustment, flush the oil chamber of the pump and regulator with clean diesel fuel and fill with fresh engine oil up to the level of the drain hole. For the duration of the test, plug the drain fitting

Maintenance of injection pump models 173-30, 173.6-20

Before starting the adjustment, flush the oil chamber of the pump and regulator with clean diesel fuel and fill it with fresh oil used for the engine to the level of the drain hole

Checking and servicing diesel injectors YaMZ-238

When servicing each injector, check and adjust in the following order:

1. Adjust each nozzle to the injection start pressure:

Maintenance of the YaMZ-238 oil system

The service life of the engine depends on the timely and thorough lubrication, as well as on the grade and quality of the oils and greases used

How to install a high pressure fuel pump on a YaMZ-238 diesel

Install the driven half-coupling (Fig. 1, 2) on the advance clutch (damper clutch) and fasten with bolts

Turn the coupling so that the bosses of the driven coupling half are in a horizontal position, and the mark on the end of the coupling is in the indicator zone

Possible malfunctions of the YaMZ-238 engine

The normal operation of the engine and its long service life can only be ensured if all recommendations are followed.

Main parameters and characteristics of YaMZ-238 engines

The 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 / m3, as well as for vehicle movement 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.

How to adjust the fuel injection of a YaMZ-238 diesel engine

To adjust the fuel injection advance angle, two hatches are provided on the flywheel housing (see Fig. 1), and the angle values ​​\u200b\u200bare marked on the flywheel in two places

Adjustment of diesel valves YaMZ-238

Thermal gaps in the valve mechanism are used to ensure a hermetic fit of the valve on the seat, when the parts of the valve drive expand during engine operation

Design + maintenance of the turbocharger and air path of the YaMZ-238 diesel engine

The YaMZ-238 diesel engine is equipped with a turbocharger that uses the energy of exhaust gases to boost the engine

By increasing the mass of air entering the cylinders, the turbocharger contributes to more efficient combustion of the increased dose of fuel, thereby increasing engine power at moderate thermal stress.

  1. Design + maintenance of the YaMZ-238 diesel cooling system
  2. The design of the YaMZ-238 diesel fan drives
  3. Repair of the YaMZ-238 cylinder head
  4. Repair of the cylinder-piston group YaMZ-238

Page 1 of 3

  • 1
  • 2
  • 3