Checking Low Pressure Injection Timing For Engines With Mechanical Tappets; Injection Timing Correction By Changing The Pad Thickness - Kohler LAMBARDDINI LDW 1503 Workshop Manual

Injection timing
Engine
value for
type
r.p.m. ≥ 2400
LDW 1503
1603
13° ± 1°
2004
2204
LDW 2004/T
7° ± 1°
2204/T
168
Workshop Manual LDW CHD _ cod.
Injection timing value
for r.p.m. ≤ 2400
11° ± 1°
4° ± 1°
169
ED0053031210 - 1° ed_rev. 00
Checking low pressure injection timing for engines with
mechanical tappets
The check of the advance on engines with mechanical tappets
is carried out using the same procedure as that described for the
hydraulic tappets; the only difference is in the disassembly and
reassembly of the rocker-arm pin and of the push rods which is
not necessary.

Injection timing correction by changing the pad thickness

Should it be necessary to correct the injection static advance,
remove the injection pump from the engine block and replace pad
B inside the injection tappets with one of a different thickness (to
extract pad B use a magnet C).
Its value is printed on the lower part of the pad.
Twelve spare pads are supplied for the advance variations and
their thickness can vary from 4 to 5.1 mm.
The gasket A, between the injection pump flange and the engine
block, is only one, with the only task of preventing any possible
oil leaks.
Previously, to vary the injection advance, gaskets of different
thicknesses were used between the injection pump surface and
the engine block surface (in effect, gasket A without sealing rubber
border).
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Fuel system
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