WORKSHOP MANUAL - lombardini service

7
Fuel system
Plunger barrel ring nut assembly/disassembly
To disassemble ring nut 9 (fig. 142) , use the suitable wrench A
se.no. 7107-1460-029
When refitting tighten it a torque of 34 Nm.
143
Injection pump assembly/disassembly
Disassemble the unit following the progressive order of fig. 142.
Reassemble following the same steps in reverse order.
During reassembly, turn the plunger spiral L towards the non-return
valve 19, as follows.
144
Plunger injection pump reassembly
To be able to insert the plunger in its barrel press with a finger and
at the same time slowly rotate lever 8 (fig. 144) until guide M of the
plunger (fig. 145) enters the lever seating.
Note: If by mistake the plunger is mounted with the spiral in the
wrong direction the pump won’t function (there is no danger
that the engine runs away).
145
Pumping element
1 Plunger
2 Upper plunger section
3 Plunger barrel
4 Delay notch
5 Control slot
INJECTION
PUMP
Dimensions
A B C D E F
146
6590.290
6. 5
1.50
÷
1.55
1.50
÷
1.53
9.965
÷
10.035
9.565
÷
9.635
0.9
- 62 - FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00