During engine operation, the exhaust gas system heats up to a high temperature, therefore, in case of severe mechanical damage or significant corrosion of the thermal screens installed on the system elements, be sure to replace them. In addition to reducing the level of comfort in the cabin, a malfunction of thermal screens can lead to charring of the thermal and sound insulation of the body floor.
WARNING: The edges of the thermal shield of the collector are very sharp, so when removing it, protect your hands with rags or gloves.
To remove the thermal screen of the collector, do the following.
1. Disconnect the wire from the terminal «minus» battery.
2. Squeeze the clamps of the wiring harness block of the control oxygen concentration sensor...
3.... and disconnect the block.
4. Remove the crankcase protection (see «Removal and installation of mudguards and engine crankcase protection»).
5. Unscrew the two bolts of the upper fastening of the thermal screen: the guide tube of the pointer is attached with the left bolt (probe) oil level, and on the right - the holder for the wiring harness of the control oxygen sensor; move aside the harness holder...
6.... remove the dipstick guide tube seal from the cylinder block bore and remove the tube.
7. Remove two bolts securing the thermal screen to the collector...
8.... and remove the thermal screen of the collector by passing the wires and the block of the control oxygen concentration sensor through the hole in the screen.
9. Install the thermal screen of the collector in the reverse order of removal.