PREVOST X3-45 2016, Maintenance Manual

Page: 66 / 459

Section 04: EXHAUST AND AFTERTREATMENT SYSTEM
PA1593
8

Using the lines made earlier, line up the
lower and upper clamps with regard to the
emboss of the converter and afterward, line
up the lines made earlier on the clamps with
regard to the clamp supports on the catalytic
converter.
Lower
Upper
Lower
Upper

Before tightening the parts, make sure that
the catalytic converter lower support is well
centered with the exhaust inlet of the
catalytic converter.

While tightening the bolts, keep in mind to
respect the alignment of the parts and keep
the lower support as centered as possible
with the catalytic converter exhaust inlet.
4. DIFFUSER ASSEMBLY
During stationary regeneration, exhaust gases
temperature may get very hot at the DPF outlet.
The diffuser decreases the exhaust gasses
temperature by about half approximately, at 6
inches above the diffuser. The diffuser is an
important component of the exhaust system and
must remain on the vehicle at all times.
Operating the vehicle without the diffuser may
seriously damage the vehicle.
FIGURE 6: DIFFUSER ASSEMBLY
04014
4.1 DIFFUSER ADJUSTMENT
Should an adjustment of the diffuser position be
necessary, first remove the exhaust
aftertreatment roof ventilation grill.
CAUTION
To prevent paint damage and fiberglass
overheating caused by hot exhaust gases, the
diffuser louvered cover must be flush with the
roof surface or may exceed the roof surface
not more than 3/32" (2mm).
EXHAUST
INLET