Visual inspection in area of injection pump In the event of complaints resulting from poor per- formance, simple visual inspections may help avoid high-input and time-consuming troubleshoot- ing actions as well as the exchange of the injection pump. Speed−adjusting device (only in D 2848 LE 403 units) Figs. 1 and 2 It must be possible to bring the speed−adjusting lever on the governor into full-load position. For this purpose check the speed−adjusting device (picture) and the Bowden cables attached to the hull and extending beyond the engine to ensure 1 D easy action. D low elasticity in transmission. D correct adjustment. 2 Throttle in fuel return line (only in D 2842 LE 404 units) Fig.
3 Particularly in the case of the most powerful en- gine the fuel rinsing capacity through the suction gallery of the injection pump is an important cri- terion for the necessary large injection quantities and thus for maximum engine output. It is ensured by a throttle hollow bolt with optimised throttle bore cross−section (arrow, item no. 51.98150-0174) in the fuel return line. If a ”similar” hollow bolt is mistakenly fitted, the fuel supply to the injection pump will not be guaran- teed. 3 Fig. 4 The hollow bolt, item no. 51.98150-0174, can be identified by the turned−in notch in the bolt head. A second hollow bolt of this type is used nowhere else on the engine. 3 34