KTM 125, Repair Manual

Page: 41 / 159

Repair manual KTM 125 / 200
Art No 3.206.005 -E
5-2C
Right housing half
Remove the shaft seal rings and use a hot plate to heat the housing half
to a temperature of approximately 150° C.
NOTE: At a temperature of 150° C it is usually sufficient to tap the
housing half onto a plane wooden surface and the bearings will simply
drop out of the bearing seats. However, in some cases it is necessary to
press the bearings out of their seats. To prevent damaging of the
bearings, the device used to press in the new bearings must be designed
in such a way that it touches only the outer ring of the bearing.
Grooved ball bearing of the crankshaft
1
Press the old grooved ball bearing inwards from the outside. Insert a
new grooved ball bearing with the open side of the ball cage facing
downwards (i.e. towards the exterior) and press it all the way into the
seat.
Grooved ball bearing of the main shaft
2
Apply a suitable mandrel on the outside to press the grooved ball
bearing inwards.
Before pressing the new grooved ball bearing inwards, mount the gear
shifting gate
bk
. Then, the grooved ball bearing can be pressed in from
the inside and up to the stop.
! CAUTION !
A
PPLY ONLY A LIGHT PRESSURE WHEN PRESSING IN THE GEAR SHIFTING GATE
.
O
THERWISE
,
YOU WILL DAMAGE THE SHIFTING GATE
.
Grooved ball bearing of the countershaft
3
Apply a suitable mandrel on the outside to press the old grooved ball
bearing inwards. Insert a new grooved ball bearing from the inside and
press it all the way into the seat.
Grooved ball bearing of the shift roller
4
Apply a suitable mandrel on the outside to press the old grooved ball
bearing inwards. Insert a new grooved ball bearing from the inside and
press it all the way into the seat.
! CAUTION !
– M
ODEL
2000
UPWARDS THE GROOVED BALL BEARING IS SECURED WITH A
SCREW
bl
,
THIS IS TO BE REMOVED BEFORE PRESSING OUTWARDS THE BEARING
AND TO BE MOUNTED AFTER PRESSING INWARDS THE BEARING
.
D
UE TO THIS SCREW THE SHIFT ROLLER HAS CHANGED
,
AN
„
OLD
“
SHIFT ROLLER
IS NOT ABLE TO MOUNT WITH A SCREW SECURING THE BEARING
.
– D
O NOT APPLY EXCESSIVE FORCE WHEN PRESSING THE GROOVED BALL BEARINGS
FLUSH WITH THE COLLAR IN THE HOUSING
. T
HE COLLAR WALL IS VERY THIN AND
CAN EASILY BE DAMAGED
!
Needle bearing of the shifting shaft 5 (from model 2002 on)
Use a suitable mandrel to press out the needle bearing. Insert the new
needle bearing and press it all the way in.
Grooved ball bearing of the centrifugal timer
6
Use an interior extractor and a Ø 5-7 mm insert to pull the grooved ball
bearing out of the housing. Press a new grooved ball bearing all the way
into the seat.
Grooved ball bearing of the water pump shaft
7
Use an interior extractor and a Ø 5-7 mm insert to pull the grooved ball
bearing out of the housing. Press a new grooved ball bearing all the way
into the seat.
Kickstarter release plate
8
When exchanging the release plate keep in mind to apply Loctite 243 to
both bolts.
Shaft seal ring of the crankshaft
9
Insert a new shaft seal ring from the outside and press it in flush, the
open side facing inwards.
Then check the lubrication bore for the grooved ball bearing
S
of the
crankshaft for obstructions.
1
2
3
4
6
7
8
9
S
10
5
11