How to remove the exhaust pipes and exhaust manifold of the ZMZ-406 engine

Receiving pipes and exhaust manifold are replaced in case of burnout of gaskets

Also when overhauling the engine, and if you need to completely remove the cylinder head for a complete overhaul.

Removing downpipes

Using keys 12 and 13, we unscrew the bolt securing the exhaust pipes to the bracket.

If the bolt does not lend itself, with a 14 key we unscrew the two bolts securing the bracket to the gearbox.

With a 17 head, we unscrew the four nuts securing the exhaust pipes to the exhaust manifold flange.

We mount the exhaust pipe in the reverse order, after putting a new gasket on the studs of the exhaust manifold flange.

Removing the exhaust manifold

Disconnect from the exhaust manifold or remove the exhaust pipe from the engine (see above).

Having loosened the clamp with a screwdriver, remove it from the fitting and set aside the vacuum booster hose

With a 14 head, we unscrew the eight nuts securing the exhaust manifold to the block head

Remove the washers and screen from the studs

Remove the engine lift bracket

Remove the bracket for attaching the water intake pipe

Remove the exhaust manifold.

We mount the exhaust manifold in the reverse order, having previously installed four gaskets on the studs.