REMOVAL & INSTALLATION
To remove the heat exchangers, remove the exhaust pipe clamps, the clamps between the heat exchanger and the exhaust pipe, and the rear engine cover plate (type 1 and 2). Remove the nuts on the cylinder head and warm air pipe connecting clips. The heat exchanger can now be removed. Check the outer shell and exhaust pipes for damage and leakage. If the heat exchangers leak, there could be a possibility of poisonous gases entering the heating system. The sealing surfaces must be clean and smooth, and flanges that are distorted or bent through excessive tightening should be straightened or machined. Use new gaskets and ensure that all connections are gastight. Heat exchangers must be attached at the cylinder heads with self-locking 8mm nuts. It is not permissible for any other type of nut to be used, even with lockwashers.