5-5E
Working on the left half of the housing
Remove shaft seal rings and heat housing half to approx. 150° C by
5
1
means of a hot-plate.
4
Needle bearing of counter shaft
1
Press in new needle bearing from inside until flush.
2
Shaft seal ring of kickstarter shaft
Press in new shaft seal ring from outside with sealing lip facing inwards
until flush.
3
2
Grooved ball bearing of the balancer shaft
.
3
Use an extractor 151.12.017.000 and insert to remove the grooved ball
bearing from the housing half.
4
Shaft seal ring of crankshaft
6
6
Press in new shaft seal ring from outside with sealing lip facing inwards
until flush.
5
Retaining plate for main shaft grooved ball bearing
If the retaining plate has been removed, use Loctite 243 for the two
countersunk bolts during assembly.
6
Oil ducts
Use compressed air to clean all oil ducts. Ensure that the oil ducts are
not clogged.
8
7
7
Roller bearing of crankshaft
9
From outside press crankshaft roller bearing inwards using a suitable
mandrel.
Press in new roller bearing from inside up to the stop.
Grooved ball bearing of main shaft
8
Press in new grooved ball bearing from inside up to the stop.
!
!
CAUTION
D
O NOT USE FORCE WHEN PRESSING THE GROOVED BALL BEARING AGAINST THE
5
,
RETAINING PLATE
TO AVOID A BENDING OF THE PLATE
WHICH WOULD RESULT IN
.
EXCESSIVE AXIAL PLAY OF THE MAIN SHAFT
9
Needle bearing of kickstarter shaft
Press in new needle bearing from inside until flush.
3
Bypass valve
Test valve piston, tight fit and pressure spring for damage.
bk
Minimum length of the pressure spring
: 25.00 mm (1 in)
NOTE: The opening pressure of the bypass valve is reduced when the
length of the pressure spring decreases below 25 mm (1 in). This
reduces the oil pressure and causes engine damage.
10
A
Ensure that neither the lubrication bore of the roller bearing
nor the
oil ducts of the oil pumps are clogged.
– After the housing half has cooled down, check bearings for tight fit.
– Finally, insert both dowels so that the dowel with internal diameter
15.4 mm (0.616 in) is mounted at the rear (swingarm pivot).
A
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