Diffuser Assembly - PREVOST H3-41 Maintenance Manual

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SECTION 04 : EXHAUST AND AFTERTREATMENT

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

PA1615 Maintenance Manual All Series | Section 04 revised September 2016

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.

DIFFUSER ASSEMBLY

During stationary regeneration, exhaust gases

temperature may get very hot at the outlet. The

diffuser decreases the exhaust gas temperature

by about half 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.

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