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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06

150

5

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Turbocharger west gate adjustment - Regolazione corsa asta

comando valvola " Waste gate "

Disconnect westgate tube 7 from the turbocharger compressor side.

Using a T-joint connect a pressure gauge 4 (scale 0 to 2 bar) and

with the compressed air network pipe complete with reducer 5.

The network air supply pressure must be from 1.5 to 2 bar.

Make a hole B in the pressure gauge pipe of 1.55 mm in diameter.

This will help bleeding some air and stabilizing pressure in the

pressure gauge.

Set up a dial gauge (6) so that the feeler is rested on terminal 2.

Via the pressure reducer 5 convey some air to the actuator so as

terminal 2 is pushed forwards by A (A=1 mm).

The pressure read in the pressure gauge must be 830÷890 mm Hg

(1.11÷1.19 bar).

If the pressure is lower than the given value proceed as follows.

Unscrew locknut 1.

Remove split pin 9 and disconnect rod 8, “waste gate” control valve.

Keeping the rod steady tighten terminal 2 until you reach the

calibration pressure.

During the rotation of terminal 2, the rod should not undergo any

torsion.

Turbocharger

Engine Type	Diesel, 4-stroke
Number of Cylinders	2
Fuel System	Indirect injection
Starting System	Electric start
Lubrication System	Forced lubrication with gear pump
Bore x Stroke	72 mm x 62 mm
Cooling System	Air-cooled
Displacement	505 cm³ (30.8 cu in)

Lombardini LDW 502 User Manual

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