Perkins Phaser Series - Cooling System

20A FUEL SYSTEM
To set the injection
advance device (KSB)20A-06C
Some Bosch EPVE rotary fuel injection pumps have
a starting aid (KSB) which advances the injection
timing. The device (A) is operated electrically and is
connected by a wire to the advance lever (A5) of
the fuel injection pump.
When the engine reaches the normal temperature
of operation a sender unit in the cooling system
energises, to apply 24v to the wax filled element
(A3) which operates to retard the timing.
The advance lever of the fuel injection pump is set
in the factory to advance the injection timing when
the engine is cold. Therefore it will be necessary to
energise the KSB if the static timing of the fuel
injection pump is to be set:
Caution: Do not release the clamp (A6) from the
KSB wire; this will result in the loss of adjustment
set in the factory.
1 With the fuel injection pump removed from the
engine connect a cable from the positive terminal of
the battery (A8) to the injection advance device
(A2).
2 Connect a cable from the earth terminal of the
battery to the fuel injection pump body (A4).
Warning! Do not touch the body of the hot KSB
during the pump setting operation.
3 Allow a minimum of five minutes for the wax in
the wax filled element to expand before the static
timing is set.
4 Turn the pump shaft in the direction of rotation to
move the lever of the advance mechanism, fully
towards the clamp (A6), into the fully retarded
position. Ensure that there is no tension in the
cable of the KSB before the pump is set.
Notes:
• New pumps may be supplied with a special tool
fitted to the end of the wire for factory adjustment
(A7). This tool must be removed by the release of
the screw and discarded to prevent damage to the
wire when the engine is operated. Cut off excess
wire which extends from the end of the clamp and
seal the end of the wire.
• If the pump performance is correct and static
timing adjustment is not necessary, the pump can
be removed and fitted without the requirement to
energise the KSB.
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20A.18 Perkins Phaser/1000 Series, April 1995