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9LD Workshop Manual _ cod. 1.5302.286 - 3° ed_rev. 02
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SPEED ADJUSTMENTS
WARNING
-Adjustments should be carried out by Lombardini authorised
personnel only.
-Any tampering with the adjustment immediately makes the warranty
null and void.
Idling speed setting in no-load conditions
After filling with oil and fuel, start the engine and let it warm up for 10
minutes.
Adjust idling speed at 1000÷1100 r.p.m. by turning setscrew 1; then
tighten lock nut.
INJECTION PUMP DELIVERY SETTING
Important
This adjustment must be performed with the engine connected to
the dynamometric brake. Without this the regulation is approximate.
lnjection pump delivery limiting and extra fuel device
Limiting device C limits the injection pump maximum delivery.
It also acts as a torque setting device since spring N opposes the
resistence of spring M inside the cylinder through lever L.
The torque setting device allows lever L to move over stroke H
corresponding to 0.15÷0.25 mm.
This consequently increases injection pump delivery with torque reaching
its peak value.
Note: In generator sets and power welders, the torque setting device
acts as a delivery limiter only.
It therefore does not feature spring M or stroke H.
Full speed setting in no-load conditions (standard)
After setting idle speed turn screw 2 and set full speed in no-load
conditions at 3200 r.p.m.; then tighten lock nut.
Note: When the engine reaches the pre-set power full speed stabilizes
at 3000 r. p. m.
SETTINGS
Not valid on EPA engines, on which it is not possible to modify the
adjustment of the maximum.
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