Lombardini 9 LD 625-2 User Manual

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9LD Workshop Manual _ cod. 1.5302.286 - 3° ed_rev. 02
9 LD 625-2 - 626-2 - 625/626 CE
9 LD 625-2 EPA
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How to check injection pump delivery valve sealing
Components:
1 Valves
2 Seat
Adjust pump rack at half-stroke.
Turn flywheel according to its direction of rotation so that the plunger puts
the circuit under pressure.
During this operation the displayed pressure will gradually reach a peak
followed by a sudden drop which corresponds to valve closing.
Pressure drop should be 30÷50 bar.
Replace the valve if pressure drop is below this value.
Repeat the same operation for the other plunger.
Fuel system
Control rod
max. force
Rod stroke
from max
deliv. point
R.P.M. Delivery
Max. plunger
difference
Newton mm mm
3
/stroke mm
3
/stroke
0,50
10 1500 34÷37 3
13 500 7÷11 3
015070÷78--------
10 500 22÷26 3
Control rod
max. force
Rod stroke
from max
deliv. point
R.P.M. Delivery
Max. plunger
difference
Newton mm mm
3
/stroke mm
3
/stroke
0,50
9.5 1500 34÷37 3
11.5 500 3÷7 3
015060÷68--------
9.5 500 13÷18 3
Test data for injection pump delivery
Check only maximum plunger difference by positioning rack rod according
to the indicated delivery value.

Lombardini 9 LD 625-2 Specifications

General

Brand	Lombardini
Model	9 LD 625-2
Category	Engine
Language	English