Perkins New 1000 Series, Workshop Manual, Page: 183 / 290

Workshop Manual, TPD 1350, issue 3 183
20
New 1000 Series
Cold start advance unit
Some Lucas, Bosch and Stanadyne rotary fuel
injection pumps have a cold start advance unit that
holds the timing of the pump in an advanced position
when the engine is cold.
Caution: It is important that the electrical
connections to the sender unit are connected
correctly. Failure of the starting aid to operate
correctly could result in damage to the engine as the
timing will be fully advanced for normal operation.
The sender unit, for engines fitted with belt driven
coolant pumps, is on the top of the thermostat
housing. The sender unit, for engines fitted with gear
driven coolant pumps, is on the rear of the timing case
on the left side of the engine.
As the engine warms, the sender unit energises to
retard the pump timing to the correct timing for normal
operation of the Lucas and Bosch fuel injection
pumps. The sender unit for the Stanadyne cold start
unit de-energises to retard the pump timing to the
correct timing for normal operation.
Note: The wiring diagrams on page 184 show the
sender unit (component 3) position when the engine
is cold.
To ensure that the engine conforms to the emissions
legislation, it is important that the electrical
connections of the engine cold start advance unit are
fitted correctly before the engine is operated.
Caution: Damage to the engine will occur if the
engine is load tested at more than 80% of full load
with the cold start device disconnected.
Continued
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