Removal - PREVOST H3-41 Maintenance Manual

SECTION 04 : EXHAUST AND AFTERTREATMENT

4.1 REMOVAL

Procedure # 1
Radiator must be removed in order to lower the
catalytic converter for replacement.
• Set the starter selector switch to the OFF
position.
•
Shut off the heater line shut-off valves.
•
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 in order
installation. Plug all openings to prevent dirt
from entering the system.
•
Disconnect and remove section of coolant
pipe assembly
radiator outlet and the water pump inlet.
FIGURE 5: CATALYTIC CONVERTER
•
Disconnect and remove a section of coolant
pipe assembly
thermostat housing and the radiator inlet.
•
Disconnect the electric fan-clutch connector
located near the cooling fan right angle
gearbox.
PA1615 Maintenance Manual All Series | Section 04 revised September 2016
12
to facilitate re-
mounted between the
mounted between the
•
Disconnect and remove the air intake duct
mounted between the turbocharger outlet
and the air cooler inlet.
•
Open radiator door. Unfasten bolts and
screws fixing radiator sealing frame.
•
Remove radiator and air cooler assembly.
WARNING
Due to the heavy load of the radiator assembly,
it must be adequately supported before
attempting to remove it.
•
Safely support catalytic converter from the
top.
•
Disconnect catalytic converter outlet NOx
sensor.
•
Remove clamps holding catalytic converter
then lower.
•
Remove or disconnect
equipment or component that might be in the
way or that might prevent removing the
catalytic converter.
Procedure # 2
• Set the starter selector switch to the OFF
position.
•
Shut off the heater line shut-off valves.
•
Remove DOC and DPF assembly (Refer to
paragraph 2.1 in this Section).
•
Remove pipe connecting DOC & DPF
assembly to catalytic converter.
•
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 in order
installation. Plug all openings to prevent dirt
from entering the system.
•
Disconnect and remove section of coolant
pipe assembly
radiator outlet and the water pump inlet.
any piece
to facilitate re-
mounted between the
of