Injection Pump/Mechanical Speed Governor Timing; (Static) Injection Timing; Injection Static Advance Adjustment - Kohler KD 625/2 Workshop Manual

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Fuel system
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Injection pump/mechanical speed governor timing

Loosen screw 1
Move injection pump lever 2 to maximum delivery (to the right).
Check that drive rod 3 closes the speed governor; keeping lever 2
pressed to the right the drive rod should have no clearance.
Tighten screw 1.

(STATIC) INJECTION TIMING

Injection static advance adjustment

1 Remove rocker arm covers and high-pressure pipes.
2 Select the cylinder on which the injection static advance check will
be carried out.
3 Assemble the valve lowering tool (1460.285) by fastening it to the
fixing holes of the rocker arm cover screws.
4 Before tightening the tool fixing screws, make sure that the dial
indicator tracer is correctly placed on the intake valve collar.
5 Place the auxiliary tank at a higher height than the one of the in-
jection pump (~30-40 cm).
6 Connect the tank to the injection pump fuel supply hole.
7 Slowly rotate the crankshaft clockwise keeping lever 1 lowered
and the valve positioned on the piston crown, until the dial indica-
tor 2 shows the maximum measurement.
8 Set the maximum measurement dial indicator to zero which is
equivalent to the compression top dead centre.
9 Assemble the advance tester 4 (serial number 1460.024) on the
injection pump delivery union of the cylinder corresponding to the
one on which the valve lowering tool has been previously installed.
10 Rotate the crankshaft clockwise by approximately 45°.
11 Rotate the crankshaft alternately until the fuel leaks out from tester
4 with a certain pressure.
12 Position the stop lever 3 half a stroke so that the plunger delay
mark is excluded and keep the lever in this position.
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KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00