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30/ENGINE - WORK ON INDIVIDUAL PARTS
®
cylinder - Nikasil
coating
19.23
Checking/measuring the cylinder
19.24
®
Nikasil
is a surface protection layer for a coating procedure developed by the Mahle
company. 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 Nikasil
resulting in much improved performance, low wear, and a lightweight cylinder.
600272-01
–
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 places on the
micrometer to check for oval wear.
Specification
Cylinder - bore diameter (450 XC ATV)
Diameter size I
600252-01
Diameter size II
Cylinder - bore diameter (525 XC ATV)
Diameter size I
Diameter size II
–
Cylinder size
600255-10
–
Check the sealing area of the cylinder head for distortion using a straight edge and
the special tool.
Feeler gauge (59029041100) (
Cylinder/cylinder head - sealing area
distortion
»
If the measured value does not equal the specified value:
–
Change the cylinder.
400376-10
®
is marked on the side of the cylinder.
P. 209)
coating are very good heat conductivity,
and
axes using a
89.000... 89.012 mm (3.50393...
3.5044 in)
89.013... 89.025 mm (3.50444...
3.50491 in)
95.000... 95.012 mm (3.74015...
3.74062 in)
95.013... 95.025 mm (3.74066...
3.74113 in)
≤ 0.10 mm (≤ 0.0039 in)
113
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