Technical data

45
1 – filter housing; 2 – slinger with the filter screen; 3 – cup.
Fig. 24 – Washing the coarse fuel filter.
3.3.18. Checking the 4UTNI and 4UTNI-T Fuel Pumps (Bench Test)
Check the fuel pump every 2,000 service hours of the diesel engine.
Dismantle the fuel pump from the diesel engine and check it on the bench for corre-
spondence of the adjustment parameters to those specified in Appendix D.
Adjust the speed mode by means of the adjusting screw turned into the lug of the gover-
nor housing, as shown in Fig. 25(a). The screw limits the travel of the lever controlling the fuel
delivery. The adjusting screw is fixed by means of a lock nut and sealed.