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30/ENGINE - WORK ON INDIVIDUAL PARTS
Measuring the crankshaft end play
19.16
®
Cylinder - Nikasil
coating
19.17
Checking/measuring cylinder
19.18
–
Insert the crankshaft in the right section of the engine case.
Info
Do not forget the fitted bushings.
–
Mount the left section of the engine case.
–
Mount and tighten the screws.
Guideline
Screw, engine case
301214-10
Screw, engine case
–
Mount the dial gauge support on the engine case, and measure and note the
crankshaft end play.
Guideline
Crankshaft - end play
»
If the measured value does not meet specifications:
–
Remove the crankshaft.
–
Remove the crankshaft bearing inner race. (
–
Determine the thickness of the compensating disks by calculating.
–
Add or subtract compensating disks equally on both sides.
–
Install the crankshaft bearing inner race. (
®
Nikasil
is a surface protection layer for a coating procedure 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 Nikasil
resulting in much improved performance, low wear, and a lightweight cylinder.
301248-10
–
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
micrometer to identify oval wear.
Guideline
Cylinder - drill hole diameter (450 SX ATV)
Size I
301215-10
Size II
Cylinder - drill hole diameter (505 SX ATV)
Size I
Size II
M6
M7x1
0.25... 0.35 mm (0.0098...
0.0138 in)
Info
If the end play is too small, compensating disks must be removed.
If the end play is too large, compensating disks must be added.
®
coating are very good heat conductivity,
97.000... 97.012 mm (3.81889...
3.81936 in)
97.013... 97.025 mm (3.8194...
3.81987 in)
100.000... 100.012 mm (3.937...
3.93747 in)
100.013... 100.025 mm (3.93751...
3.93798 in)
127
10 Nm (7.4 lbf ft)
14 Nm
(10.3 lbf ft)
p. 125)
p. 125)
‑ and
‑axes using a
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