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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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Valve / Rocker arm clearance
Important
Setting should be performed when the engine is cold.
Bring each cylinder piston to top dead center on the compression
stroke and set clearance A at 0,20 mm for both the intake and
exhaust valves.
For greater convenience, clearance check B is accepted. In this case
the value is 0.15 mm.
Crankcase breather LDW 502
For LDW 602-702-903-1003-1204-1204/T-1404 engines, the exhaust
gases exit from the cylinder head cover, see Fig. 53, 54.
In the LDW 502 engine the exhaust gases exit directly from the
crankcase via cover 1.
Remove the cover, check the integrity of the air valve and oil
decanting wire gauze.
Fuel rail
When removing the fuel feeding pumps A, with the rail holders B,
pay attention that the sealing O-rings C remain in their seats.
When refitting tighten the rail holder screws at a torque of 4 Nm.
Injection pump control rod
Depending on the engine model, the injection pump control rod will
link two, three, or four injectors to the engine governor.
Screws 1 and 2 are pivoted on the delivery control lever of each
pump/injector B, unscrew the screws and remove spring 3.
When refitting tighten the screws 1 and 2 at a torque of 1,1 Nm
and make sure that they stop on lever B of each pump/injector and
not on rod A.
 To carry out the delivery equalisation of the injection pumps see
page 83.
 To carry out the timing of the injection pumps and speed
governor see page 95
Disassembly / Reassembly
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