Sequence of work
1. Remove the cross suction air line and nozzle cover.
Pic. 4.80. Nozzle location: 1 - nozzle; 2 - union fitting; 3 - pipeline for supplying fuel to the nozzle; 4 - excess fuel removal pipeline; 5 - oil separator of the crankcase ventilation system
2. Unscrew the fuel line from the injector to be removed (pic. 4.80).
3. Disconnect excess fuel lines.
4. Unscrew the nozzle with a tubular wrench.
5. Pay attention to the adjusting washers, when unscrewed, they may remain in the nozzle socket. According to the manufacturer's recommendations, washers should be replaced with new ones when installing nozzles.
6. Install each nozzle in its place and tighten to 70–80 Nm.
7. Tighten the pipelines to the nozzles with a force of 10–15 Nm.