1
Introduction
2
Meritor WABCO
Maintenance Manual MM-1012 (Issued 02-10)
Schematics
Figure 1.2
Figure 1.3
Figure 1.2
4007
99
4
a
UREA/AIR
MIXTURE
SENT TO
EXHAUST
PRIMARY
UREA
TANK
UREA
PUMP
UREA
DOSER
NORMALLY CLOSED CONFIGURATION
SECONDARY
WET
AIR CONTROL
UNIT
Figure 1.3
4007
99
5
a
UREA/AIR
MIXTURE
SENT TO
EXHAUST
AIR CONTROL
UNIT
PRIMARY
UREA
TANK
UREA
PUMP
UREA
DOSER
NORMALLY OPEN CONFIGURATION
SECONDARY
WET