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13
KMR 1250 B, LPG, D
Unit Functions
Diesel Engine (YANMAR L 70 AE-DE)
Injection pump (cross-section)
Injection pump
The injection cam on the camshaft shuttles the
injection pump piston (1) back and forth. Fuel is
conveyed to the injection nozzle via pressure
valve (7).
Injection timing is determined by the thickness
and number of shims (2) in shim pack.
Note:
Checking injection timing and related fine
adjustment are the exclusive domain of a
licensed service facility.
In the event that the injection pump fails to deliv-
er fuel, the entire injection pump assembly must
be removed and checked.
Note:
Injection pump service and repair are the
exclusive domain of a licensed service facil-
ity.
Injector assembly
The fuel that is conveyed to the injector by the
injection pump is transported through the feed
channel (14), past the nozzle valve (13), and then
sprayed into the engine combustion chamber.
Injector assembly (cross-section)
4
3
2
1
5
6
7
8
9
10
11
13
12
14
1
Pump piston
2
Shim pack
3
Flange
4
Fuel inlet
5
Pressure valve holder
6
Valve spring
7
Pressure valve
8
Housing, injection pump
9
Piston spring
10
Holder, piston spring
11
Housing, injector
12
Valve spring
13
Nozzle valve
14
Fuel feed line