Husqvarna FE 250 AU 2014, Руководство по ремонту

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18 ENGINE
18.4.33 Preparing the timing chain tensioner for installation
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Press the timing chain tensioner together completely.
•
Info
I
This requires some force, as the oil must be pressed out.
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Release the timing chain tensioner.
✓ Without pressure, the timing chain tensioner expands fully.
166
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Place two compensating disks or similar aids next to the timing chain tensioner
piston. This ensures that, when pressed in, the piston cannot go in all the way.
200172-10
18.4.34 Checking the clutch
Guideline
I
Thickness of the compensating disks
I
2 ... 2.5 mm (0.08 ... 0.098 in)
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Release the timing chain tensioner.
✓ The detent mechanism engages and the piston remains in place.
Final position of the piston after
engagement
Info
3 mm (0.12 in)
This position is necessary for installation.
If the timing chain tensioner is now pressed again and is only extended
a maximum of half way (it is prevented from extending completely). This
locks the detent mechanism and the timing chain tensioner can no longer
be squeezed together. This function is necessary in order to ensure suffi­
cient timing chain tension even at low oil pressures.
304690-10
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Check the pressure piece
O
for damage and wear.
If there is damage or wear:
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Change the pressure piece.
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Place push rod
8
on a level surface and check for run-out.
If there is run-out:
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Change the push rod.
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Check spring retainer
fD
for damage and wear.