Volvo Penta D2-55 Workshop Manual page 60

Group 23 Fuel system
58
4. Connect a fuel container with stopcock to the inlet
of the injection pump. It should hold about 0.7 li-
ter. Use the hose between the fuel filter and the
injection pump to connect the fuel container. If ev-
erything is correctly arranged, fuel should start to
run out of the drop pipe.
5. Turn the crankshaft in normal direction until the
piston in cylinder 1 is at TDC, the rocker arms on
cylinder 1 should overlap.
Turn the crankshaft another half turn (180°) in the
normal direction.
6. Move the actuator arm to maximum position.
7. Turn the crankshaft slowly in the normal direction
until the flow is 7 drops/minute, then read off the
number of degrees on the crankshaft pulley. If the
value read off diverges from the value in technical
data, the injection timing must be adjusted.
A 0.1 mm shim alters the injection timing approx.
1°. Thicker shims give later timing and thinner
shims give earlier timing.
8. Refit the pressure valve.