Checking and setting start of fuel delivery Fig. 5 Remove screw plug А on governor housing. If fitted, take out blocking pin Б . If the indicator is exactly in the centre of the in- spection hole, the pump plunger for cylinder no. 1 is at start of delivery. However, it is only possible to determine exactly whether or not the pump is at start of delivery using the following special tools: a. Light signal transmitter 5 Fig. 6 Push light signal transmitter into socket in gover- nor housing. Make sure that guide lug В fits in groove Г . Tighten knurled screw Д by hand. 4 3 Fig. 7 Crank the engine by hand so that the piston in cy- linder no.
1 comes close to the start of delivery in the compression stroke. Lamp (A) comes on shortly before start of delivery is reached. 5 6 6 Continue cranking the engine slowly until lamp (B) comes on as well. The injection pump is now at start of delivery. Note: If only lamp (B) comes on during this check, the engine has been cranked past the start of delivery. In this case, crank the engine back and repeat the procedure. B A The picture shows the KDEP 1601 light signal transmitter, which is powered by its own batteries. 7 25 1 2