PREVOST X3-45 COMMUTER User Manual

SECTION 04 : EXHAUST AND AFTERTREATMENT
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 04 revised March 2021
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FIGURE 6: TAKING DOC AND DPF APART
10. Always put DOC and DPF filtration cartridge
back together again in a vertical position to
facilitate gaskets positioning.
FIGURE 7
11. Tighten V-band clamps.
TORQUE: 20 lb-ft (27 Nm)
CAUTION
Always torque clamps by hand.
12. With a rubber mallet, hit clamps forcefully
around the circumference to make sure
gasket is fully seated;
13. Support Diesel Oxidation Catalyst (DOC)
and Diesel Particulate Filter (DPF) assembly
during reinstallation;
14. Fasten straps holding DOC and DPF
assembly;
15. Reconnect pressure, NOx and temperature
sensors;
16. Reinstall the heat shield;
17. Put insulating blanket back.
4. SELECTIVE CATALYTIC REDUCTION
CONVERTER
In the first instance, the catalytic converter of the
Selective Catalytic Reduction (SCR) does not
need any maintenance. Unless an accident or
damage occurs in the vicinity of the engine
compartment; the catalytic converter will not
have to be replaced.
However, if the catalytic converter must be
replaced, use one of the two following
procedures:
4.1. REMOVAL
Procedure # 1
Radiator must be removed in order to lower the
catalytic converter for replacement.
1. Set the starter selector switch to the OFF
position.
2. Shut off the heater line shut-off valves.
3. Using the quick-connect drain hose, drain
the engine cooling system. Refer to Section
05, COOLING under "DRAINING COOLING
SYSTEM".
CAUTION
Tag hoses and cables for identification before
disconnecting to facilitate re-installation. Plug
all openings to prevent dirt from entering the
system.
4. Disconnect and remove section of coolant
pipe assembly mounted between the
radiator outlet and the water pump inlet.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in