Lombardini LDW 502, Service Manual

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service manual
mod. 051135
6
L
L
H
G
F
D
E
C
4 - Assemble the dial indicator on stud bolt
(C).
5 - Place the dial indicator tracer on the
exhaust valve collar.
6 - Remove the O-ring (D) from the little non-
return valve and replace it with the suitable
rubber cap (E) (part of tool “7107-1460-
048”).
7 - Install the tool metal base plate (F).
8 - Remove the rocker arm cover gasket.
9 - Fix the tool lever base (G) on cylinder head.
10 - Rotate the crankshaft clockwise until the
injection cam acts on the rocker arm that
controls the injector pump.
In these conditions, the piston is near the
compression top dead centre.
11 - Place the auxiliary tank at a height higher
than that of the injectors (~30-40) cm.
12 - Connect the tank to union (H).
13 - Rotate slowly the crankshaft clockwise
keeping the lever (L) lowered and the valve
set on the piston crown, until the dial
indicator shows the maximum
measurement.
14 - Set the dial indicator to zero. In these
conditions, the compression top dead
centre can be identified.
dial indicator tracer
dial indicator
OVERHAULS AND TUNING