Components; Def Tank - Perkins 1200F Series Supplement Manual

4.2 Components

4.2.1 DEF Tank

The DEF tank is an emissions related component and should be selected from Perkins product
offering. These tanks have been fully validated as part of an integrated solution to ensure
durability, performance and adherence to legislative requirements.
The DEF tank is available in two sizes - a 19 litre tank available in portrait or landscape or a 38 litre
tank in landscape orientation only. Note this capacity is the total volume of the tank and not the
useable DEF volume which is required for tank sizing. Please also note that if remote fill is required
then a compatible tank must be selected.
The DEF tank requires heating and this is done by engine coolant which is controlled by the coolant
control valve (CCV.)
For maintenance of the DEF tank please refer to the engine OMM. Note for cleaning of the tank, it
can be reverse flushed with distilled or de-ionized water through the drain, then flushed with new
DEF just before use.
A typical DEF tank is shown in Fig 4.2. This shows the following features, which are incorporated
into the tank design:
•
DEF tank header – ref section 4.2.3
•
Drain plug
•
Fill neck
Compatible with an ISO22241 compliant adapter and contains a serviceable 180 µ strainer.
All adapters supplied by Perkins include a magnetic toggle which when filled from a nozzle
with a magnetic safety switch will prevent DEF from being dispensed into a non-DEF tank.
The size of the neck is such that it prevents a standard diesel or gasoline fill nozzle from
being inserted into the tank resulting in a miss fill. There are, however, no devices in the
adapter preventing a determined party from inserting a non-standard fill hose and filling the
tank with fluids other than DEF. A remote fill adapter is also available as an option.
•
Fill cap with filtered vent –ref section 4.2.2
The DEF cap is designed such that it cannot be installed on other type of tanks (fuel,
coolant, etc.) and conversely, other caps cannot be used on the DEF tank.
•
Overfill protection device (incorporated into fill adapter)
This maintains the volume of expansion space and is done by simply extending a tube to
the required level then allowing the flow to back up in the nozzle activating its automatic
shutoff.
A&I manual Publication TPD 1832 – Production issue 3.
Fig 4.2 – Typical DEF Tank
1204F - DEF System Supplement
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