Manuale Officina LGW 523-627 - lombardini service

Fuel system8Instrument connectionPlace the instrument 1, se.no. 7104-1460-127 at least 20 cm abovethe pump/injector level.Connect pipe A (outlet from every instrument test piece) with pipe A(inlet of every pump/injector) and pipe B (return to the instrument)with pipe B (outlet from the pump/injector).Open tap 2 and 3 of each pipe and fill the instrument with diesel.Start the engine and bring it to 1500 rpm idle running.Close the fuel supply to the engine from the instrument’s tank usinglever 4 and after 1 minute observe the levels in the test piece.If a level goes down more than the others it is necessary to decreasethe delivery of the corresponding pump (see below) and vice versato increase the delivery if the level increases.192Injection pumps delivery balancingIn case the balancing error read on the test pieces is greater than 2cm³/min, then injection pumps deliveries should be adjusted.Plate 4 and rod 3 are blocked by screws 1 and 2. Loosen them.Move plate 4 rightwards with respect to rod 3 if you want toincrease delivery.If moved leftwards delivery decreases. Make very small movementswith the plate. Tighten screws 1 and 2 at a torque of 1,1 Nm.Note: Each time a pump/injector is replaced it is necessary tobalance the deliveries.193FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06- 83 -