PREVOST X3-45 Multiplex, Maintenance Manual

Page: 106 / 1422

Section 04: EXHAUST SYSTEM
PA1562
4
WARNING
TOXICITY
Do not initiate a stationary regeneration in a
closed area like a garage.
Stationary
regeneration must be undertaken outdoors
only.
2.1 DIESEL PARTICULATE FILTER (DPF)
REMOVAL - BOTH ENGINES
To remove the DPF, proceed as follow:
CAUTION
External and internal temperatures remain hot
long after engine has been shutdown. Allow
the Aftertreatment Device and DPF to cool
before handling. Wear protective clothing and
glove while servicing.
FIGURE 4: OPENING DPF COMPARTMENT ACCESS
DOOR
04023
1. First, open the engine compartment door;
2. Under the ATD (Aftertreatment Device), on
the left wall, pull the catch connecting rod to
unlock the DPF compartment access door
and lift the door open;
3. Hold the door open by inserting the support
rod’s free end into the receptacle located on
the left side of the DPF;
CAUTION
After inserting the support rod into the
receptacle, make sure the rod supports the
door securely from falling down on to your
head or body.
4. From under the ATD, loosen the water drain
pipe clamp to set free the pipe as it will
move up with the ATD later in this
procedure.
5. To ease proper positioning of the ATD and
the diffuser at the time of reinstallation, using
a marker, draw a line along the support strap
bracket on the ATD. This will be helpful to
reposition the ATD exactly as it was before
removal (figure 5).
FIGURE 5: MARKING THE SUPPORT STRAP BRACKET
04024
6. With Volvo D13 engine : Disconnect the
DPF inlet pressure pick-up tube, this will
help to clear the way off for removal of the
DPF cartridge from the compartment (figure
6).
FIGURE 6: DISCONNECTING THE LOWER PRESSURE
PICK-UP TUBE (VOLVO D13 ONLY)
04025
7. With Volvo D13 engine ; Dismount the
differential pressure sensor and detach the
two hoses from the differential pressure
sensor. Detach the two pressure pick-up
tubes from the support bracket. This will help
to clear the way off for removal of the DPF
cartridge from the compartment (figure 7).