Chapter XII Exhaust System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
483
Fig. 12-3-2 Removing the catalytic converter pipe
Removal
Preparation
Disconnect the earthing cable of storage battery.
Removing the catalytic converter pipe
①
(1) Remove 3 high temperature resistant hexagon
flange nuts which fasten the catalytic converter
pipe and the VGT turbocharger; then remove 2
fixing bolts and nuts which connect the catalytic
converter pipe and the exhaust elbow.
(2) Remove 2 fastening bolt nuts which connect
the catalytic converter pipe and the front exhaust
pipe; then take off the catalytic converter pipe and
the sealing gaskets of its both ends. See Fig.
12-3-2.
(3) Check the sealing gasket, and replace those
damaged or deformed ones.
Fig. 12-3-3 Removing the front exhaust pipe
Fig. 12-3-4 Removing the muffler
Removing the Front Exhaust Pipe
②
(1) Remove the fastening bolt and nut which
connect the front exhaust pipe and the muffler. See
Fig. 12-3-3.
(2) Take off the front exhaust pipe from its bracket.
Removing the Muffler
③
(1) Remove the fastening bolt, nut and gasket
which connect the muffler and rear exhaust pipe.
See Fig. 12-3-4.
(2) Take off the muffler from its bracket.
(3) Check the sealing gasket, and replace those
damaged or deformed ones.
Removing the Rear Exhaust Pipe
④
Loosen the clamp fastening bolt, and then remove
the rear exhaust pipe from the bracket of this pipe.
See Fig. 12-3-5.
Installation
Installing the Rear Exhaust Pipe
④
(1) Connect the rear exhaust pipe with the muffler,
install the sealing gasket, and screw down the bolt
and nut as per the specified torque. See
Fig.12-3-6.
Tightening torque for the fastening bolt and
nut of rear exhaust pipe:
45 N • m ± 3 N • m
Front exhaust
manifold pipe
Mounting bracket
for front exhaust
manifold pipe
