Manuale Officina LGW 523-627 - lombardini service

8Fuel systemInjection advance control and regulation182- Dismount the rocker arm cover, see page 40.- Position the device on the head, in contact with cylinder no. 1.- Mount the dial gauge on the valve controlled by tool ref. 1460.048.- Via lever 1 of the tool, open the valve until it comes into contactwith the piston.- Then rotate the crankshaft until the TDC is read in the dial gauge.Then reset the hundredths.- Remove the fuel pipes.- Remove the O-ring in contact with the non-return valve andreplace it with the appropriate gasket - equipment component partref. 1460.074. Once the check has been completed, remove thegasket and refit the O-ring.Connect tool 1460.074 on pump n° 1. This will automaticallyposition the control lever to the maximum delivery. The tool isprovided with 3÷4 couplings for connection to a tank that must benot lower than 30 cm from the pumps level. Coupling 2 isequipped with a plastic pipe with internal drip collecting wire.- Put cylinder 1 under compression and open the tank tap. Fueldiesel will start to flow out from coupling 2.- Slowly rotate the engine towards TDC 1 until the diesel fuel stopsleaking out.- At this point with lever 1 (of fig. 182) move again the valve until ittouches the piston and read on the dial gauge how manyhundredths are missing from the previously reset value (TDC).- To convert hundredths into degrees, consult the table below.- Repeat the operation on the other cylinders.183αLDW 502(mm)LDW 602-903-1204-1204/T(mm)LDW 702-1003-1404(mm)18°1.9472.3672.46817°1.7392.1152.20516°1.5431.8761.95615°1.3581.6511.72114°1.1841.4401.50113°1.0221.2421.29612°0.8711.0591.10511°0.7330.8910.93010°0.6060.7370.7699°0.4910.5970.6238°0.3880.4720.4937°0.2970.3620.3786°0.2180.2660.277Injection advance for currently used pump/injector unitEngine Code Reference n° Rpm502-602903-1204502-602903-1204502*6590-307272+3000÷360010°÷12°702-10031404702-10031404702-10031404α6590-285272-11500÷29998°÷10°6590-285272-1> 300012°÷14°6590-290235-41500÷29998°÷10°6590-290235-43000÷360012°÷14°6590-290235-4> ÷360013°÷15°1204/T6590-290235-41500÷36006°÷8°* With aluminuim crankcase- 80 - FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06