MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
220
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-2-11 Removing the catalytic converter
pipe
Fig. 5-2-12 Removing the fastening nuts of
engine bracket
Fig. 5-2-13 Removing the engine assembly
Removing the catalytic converter pipe
⑩
(1) Remove the fixing bolts and nuts of catalytic
converter from the turbocharger or the exhaust elbow.
See Fig. 5-2-11.
(2) Remove the fixing bolts and nuts from the front
exhaust pipe.
(3) Remove the catalytic converter pipe and the sealing
gaskets on both ends.
(4) Check the sealing gasket, and replace those
damaged or deformed ones.
Removing the fastening nuts of engine bracket
○
11
(1) Use a crane to hitch the engine hook, but don't lift
the engine.
(2) Loosen 2 fastening nuts that fix the left / right engine
bracket to the frame studs (as shown in Fig. 5-2-12) so
as to separate the engine from the frame.
Removing the engine assembly
○
12
(1) Connect the hook to the crane to lift the engine
carefully, as shown in Fig. 5-2-13.
(2) After being raised, the head of the engine should be
higher than the tail.
(3) Place the engine steady on the maintenance rack for
repair, removal and reinstallation.
Attention:
When taking out the engine assembly,
do not damage the oil pipe, the sensor or electric
elements, etc.
Engine hook
