Nanni N4.40, Workshop Manual

Page: 100 / 175

ENGINE
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG, WSM
1-S30
Injection Timing
[D1803-M-DI, V2403-M-DI, V2403-M-DI-T]
1. Remove the solenoid.
2. Remove the injection pipes and the glow plugs.
3. Set the speed control lever to the position of maximum fuel
discharge.
(Reference)
• Turn the flywheel with screwdriver.
4. Turn the flywheel counterclockwise (refer to the figure) until the
fuel comes to the hole of the delivery valve holder for the first
cylinder.
5. Turn the flywheel more and stop when the fuel starts to flow out,
to get the injection timing.
6. Calculate the angle at which the center of the window points out.
(The flywheel has a mark 1TC and 4 lines that shows every
0.09 rad (5 °) of crank angle from 0.17 rad (10 °) to 0.44 rad
(25 °) before mark 1TC.)
7. If the result is different from specified injection timing, add or
remove the shim to adjust.
NOTE
• The sealant is applied to the 2 sides of the soft metal gasket
shim. The liquid gasket is not necessary to assemble.
• The shims are available in thickness of 0.175 mm
(0.00689 in.) (7), 0.20 mm (0.0079 in.) (3), 0.25 mm
(0.0098 in.) (4), 0.30 mm (0.012 in.) (5) and 0.35 mm
(0.014 in.) (6). Make a combination of these shims for
adjustment.
• The 0.175 mm (0.00689 in.) thick shim has only a thin layer
on the lower face. Thus, do not use the 0.175 mm
(0.00689 in.) thick shim as the top shim of the combination
(injection pump side). If not, it can cause oil leakage.
• Addition or reduction of shim (0.05 mm, 0.002 in.) delays or
advances the injection timing by approx. 0.009 rad (0.5 °).
• When you disassemble or replace, make sure that you use
the same number of new gasket shims with the same
thickness.
M00000003ENS0027US1
Injection timing
Factory
spec.
D1803-M-DI
V2403-M-DI
0.0742 to 0.100 rad
(4.25 ° to 5.75 °)
before T.D.C.
V2403-M-DI-T
0.0829 to 0.109 rad
(4.75 ° to 6.25 °)
before T.D.C.
(1) Delivery Valve Holder
(2) Timing Mark
(3) 2-Holes : 0.20 mm (0.0079 in.) Shim
(4) 1-Hole : 0.25 mm (0.0098 in.) Shim
(5) Without Hole : 0.30 mm (0.012 in.)
Shim
(6) 3-Holes : 0.35 mm (0.014 in.) Shim
(7) 2-Holes : 0.175 mm (0.00689 in.)
Shim
(A) 3 Cylinder
(B) 4 Cylinder
KiSC issued 06, 2009 A