Doosan DA40 - Page 77

SHOP MANUAL
Engine
Ch 1 page 32
Shutdown
When the engine is switched off the reductant pump (11) continues for a set period to deliver reductant to the
reductant doser (12). However, reductant is not injected into the hydrolysis catalytic converter (6) but is returned
to the reductant tank (1) and has the purpose of cooling the reductant doser. Otherwise it may be damaged by
the heat from the hydrolysis catalytic converter.
Figure 45