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17 ENGINE
17 .4.12
17.4.13
17.4.14
192
Installing the drive wheel of the balancer shaft
303077-10
Cylinder - Nikasil
®
coating
311622-10
Checking/measuring the cylinder
311617-10
-
Ensure that woodruff key
8
-
Warm drive wheel
of the balancer shaft and push it onto
the balancer shaft.
Guideline
1100 °C (212 °F)
is a surface protection layer for a coating procedure
®
Nikasil
developed by Mahle. The name is derived from the two materials
used in this procedure - a layer of nickel into which is embedded
the particularly hard silicone carbide.
The most important advantages of the
good heat conductivity, resulting in much improved performance,
low wear, and a lightweight cylinder.
-
Check the cylinder bearing surface for damage.
If the cylinder bearing surface is damaged:
-
Change the cylinder and piston.
-
Measure the cylinder diameter at several locations on
the 0- and 0-axes using a micrometer to identify oval
wear.
Guideline
Cylinder - drill hole diameter
Size I
Size II
Info
The cylinder size
-
Using a straightedge and the special tool, check the sealing
area of the cylinder head for distortion.
I Feeler gauge (59029041100)
Cylinder/cylinder head -
distortion of sealing area
If the measured value does not meet specifications:
-
Change the cylinder.
O
is seated properly.
coating are very
®
Nikasil
88.000 ... 88.012 mm
(3.46456 ... 3.46503 in)
88.012 ... 88.025 mm
(3.46503 ... 3.46554 in)
O
is marked on the cylinder collar.
(a
p. 288)
:e; 0.10 mm (:e; 0.0039 in)
41
41
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