WORKSHOP MANUAL - lombardini service

9
SETTINGS
SPEED SETTINGS
Setting the idle minimum (standard)
After filling the engine with oil, fuel and coolant, start it and let it
warm up for 10 minutes.
Turn the screw 1 to adjust the idle speed at 850 to 900 rpm.
Tighten then the locknut.
Note: If you loosen screw 1 speed decreases. To the opposite
direction speed increases.
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Setting the idle maximum (standard)
After setting the idle speed turn screw 2 and regulate the idle
maximum at 3800 rpm.
Block then the locknut.
When the engine reaches its setting power, the maximum rpm will
stabilise at 3600 rpm.
Note: If you loosen screw 2 speed increases.
To the opposite direction speed decreases.
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Setting the stop
Remove the rocker arms cover and completely unloosen screw B.
Push rod A to the right and keep it in this position; see figure.
Tighten screw B until it touches rod A.
Release rod A and tighten again screw B by a 0.5÷1.0 turn.
Tighten the lock nut.
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Pump/injector unit timing with speed governor
- Loosen the screws C of each pump/injector unit.
- If it is not connected, connect spring D to rod A (with this
operation the speed governor blocks are closed).
- Move plates B of each pump/injector unit rightwards; see figure
(with this operation the pumps/injector unit are at their maximum
delivery).
- Tighten screws C at 1.1 Nm. Re-balance the deliveries.
Note: Spring D is the start-up fuel supplement spring: with the
engine stopped pull rod A to the right by bringing the pump/
injector unit delivery to the maximum value, until the speed
governor comes into operation with the engine running
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- 74 - FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00