M10 head gasket BMW 3 SERIES 1991 E30 Workshop Manual

BMW 3 SERIES 1991 E30 Workshop Manual 3 SERIES 1991 E30 BMW BMW https://www.carmanualsonline.info/img/1/2759/w960_2759-0.png BMW 3 SERIES 1991 E30 Workshop Manual

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BMW 3 SERIES 1991 E30 Workshop Manual drag when the feeler gauge is moved back
and forth.
6If the gap is too large or too small, loosen
the locknut, insert a hook made from large-
diameter metal wire, and rotate the eccentric
to obtain th

Page 39 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 1 General information
This Part of Chapter 2 is devoted to in-
vehicle engine repair procedures. All
information concerning engine removal and
refitting and engine block and cylinder head
overhaul can

Page 40 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 12After the No 1 piston has been positioned
at TDC on the compression stroke, TDC for
any of the remaining pistons can be located
by turning the crankshaft and following the
firing order. Mark the rem

Page 42 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 6 Exhaust manifold- 
removal and refitting
1
Warning: Make sure the engine is
completely cool before beginning
work on the exhaust system.
Caution: If the radio in your
vehicle is equipped with an ant

Page 48 of 228

BMW 3 SERIES 1991 E30 Workshop Manual applied. Tighten the retaining nut to the
specified torque to hold the tensioner in its
correct position. Note:It is important that the
timing belt is tensioned correctly. If the belt is
over-tightene

Page 49 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 22Using a scraper, remove all traces of old
gasket material from the sealing surfaces of
the covers and engine block.
Caution: Be very careful not to
scratch or gouge the delicate
aluminium surfaces.

Page 50 of 228

BMW 3 SERIES 1991 E30 Workshop Manual nothing (including oil, water, etc) remains in
the holes (see illustration).
25BMW recommend head bolts are renewed,
but if the old ones are re-used, mount each bolt
in a vice, and run a die down the

Page 52 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 15The remainder of refitting is the reverse of
removal. Fit a new gasket to the lower sump
section on models with the M40 engine.
16On completion refill the engine with oil
(Chapter 1). Run the engine

Page 54 of 228

BMW 3 SERIES 1991 E30 Workshop Manual 26Refit the cover plate and tighten the bolts
to the specified torque.
27To check the pressure relief valve, extract
the circlip and remove the sleeve, spring and
piston. Check that the length of the

Page 60 of 228

BMW 3 SERIES 1991 E30 Workshop Manual Torque wrench settings (continued)Nm
Connecting rod cap bolts/nuts
M10 and M30 engines  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
M20 and M40 engines
Stage 1  . . . .
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