KTM 690 Enduro R AUS/UK 2012, Руководство по ремонту

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17 ENGINE
130
300103-10
–
The cylinder size
1
is marked on the side of the cylinder.
400376-10
–
Check the sealing area of the cylinder head for distortion using a straight edge and
the special tool.
Feeler gauge (59029041100) ( p. 216)
Cylinder/cylinder head - sealing area
distortion
≤
0.10 mm (
≤
0.0039 in)
» If the measured value does not equal the specified value:
–
Change the cylinder.
17.4.13 Checking/measuring the piston
0 0 A A
0 0 A A
0 0 A A
400484-10
–
Use the special tool to measure clearance
A
of the piston rings in the piston ring
groove.
Guideline
Piston ring - groove clearance
≤
0.08 mm (
≤
0.0031 in)
Feeler gauge (59029041100) ( p. 216)
» If clearance
A
is larger than the specified value:
–
Change the piston and piston rings.
–
Check/measure the cylinder. ( p. 129)
302137-10
–
Check the piston bearing surface for damage.
» If the piston bearing surface is damaged:
–
Change the piston and, if necessary, the cylinder.
–
Check that the piston rings can move easily in the piston ring grooves.
» If the piston ring is stiff:
–
Clean the piston ring groove.
Tip
Use an old piston ring to clean the piston ring groove.
–
Check the piston rings for damage.
» If the piston ring is damaged:
–
Change the piston ring.
Info
Mount the piston ring with the marking facing upward.
–
Check the piston pin for discoloration or signs of wear.
» If the piston pin has strong discoloration/signs of wear:
–
Change the piston pin.
–
Insert the piston pin into the connecting rod and check the bearing for play.
» If the piston pin bearing has too much play:
–
Change the connecting rod and the piston pin.