Left Engine Case Half - KTM 450 SX-F Repair Manual

5
bl
1
3
7

Left engine case half

– Pry out the shaft seal ring on the crankshaft
4
bk
– Remove the bearing bolt
– Remove the throttle
– Remove the oil jet
– Remove the screws
2
– Remove the dowel
– Remove the oil intake snorkel
– Thoroughly clean the case, removing any residual sealant.
6
8
NOTE: only remove the studs, case bushing
replacing the engine case.
– Clean all oil ducts and check whether they are clogged.
7
– Inspect the engine case half and add-on parts for damage and wear.
9
– Heat the engine case half in an oven to approx. 150°C and tap on a
– Push new bearings in the bearing seats of the hot engine case,
– Mount the bearing bolt
NOTE:
To avoid damage, make sure the case lies flat when pressing in the
bearings.
Always press in bearings on the outer ring or the bearings will be
damaged in the process.
Check the bearings for a tight fit when the case has cooled.
– Press in a new shaft seal ring for the crankshaft
– Press in a new shaft seal ring for the shift shaft
– Press in a new shaft seal ring for the countershaft
– Degrease the thread on the throttle
– Degrease the thread on the jet
– Degrease the thread on the screw
– Mount the dowel
– Degrease the thread on the oil intake snorkel
– Make sure the oil ducts are not clogged.
– Check the studs, case bushing
and the countershaft without damaging the case.
3
.
4
in the oil duct.
5
.
6
on the bearing retainer (and the retaining
7
brackets on the crankshaft bearing).
.
8
Check the oil pump housing for score marks or seizing marks.
level wooden surface, causing the bearings to fall out of the bearing
seats. Any bearings that remain in the case must be pressed out
with a suitable press/drift
151.12.017.000 and a suitable bit.
pressing all the way in until flush with a suitable press/drift tool if
necessary.
.
4
side on the outside until flush.
side on the inside until flush.
side on the inside until flush.
243 and tighten to 6 Nm.
4 Nm.
the retaining brackets and tighten the screws on the bearing retainer
to 6 Nm.
.
8
and tighten to 15 Nm.
, the shift shaft
1
.
9
and roller
bk bl
tool or with bearing
with the open
1
with the open
2
with the open
3
in the oil duct, apply Loctite
5
, apply Loctite 243 and tighten to
6
and apply Loctite 243. Mount
7
, apply Loctite 243
9
and roller for a tight fit.
bk bl
5-2
2
if you are
puller