E30 series BMW 3

since 1983-1994 of release

GENERAL INFORMATION

Nuts of fastening of a cover of a head of cylinders and ventilating hose

Order of a tightening of nuts of a cover of a head of cylinders 4-cylinder (above) and 6-cylinder (in the bottom of) engines

Removal and installation

PERFORMANCE ORDER

1. Remove the air filter.
2. Disconnect from a cover of a head of cylinders a ventilating hose.
3. On the M20 engine remove a rack of a soaking-up collector and an arm of sensors (or the valve of stabilization of turns of idling), previously having disconnected sockets.

4. Unscrew nuts of fastening of a cover. Disconnect the holder of high-voltage wires, or remove a casing of wires from hairpins (in drawing on the right – the 4-cylinder engine, in drawing at the left – the 6-cylinder engine).
	5. Uncover heads of cylinders of the M40 engine and laying.
	6. On the M40 engine also uncover a cam-shaft.
	7. Get a semicircular cap in a forward part of a head of cylinders of the M40 engine (if are provided).
8. Before installation clear condensed surfaces of a cover and a head of cylinders of the remains of consolidations.
9. Replace a semicircular cap, having greased a prileganiye place to laying of a cover of a head of cylinders by RTV hermetic. Wrap nuts during no more than 10 mines after hermetic drawing.
10. Uncover also laying. On the M40 engine also uncover a cam-shaft. Get a semicircular cap in a forward part of a head of cylinders (if are provided).
11. On the M40 engine establish a cover of a cam-shaft and new laying. Evenly tighten nuts as it should be specified illustrations, without allowing their excessive tightening, that not сдеформировать a cover.
12. Further assembly is carried out upside-down.