Crankcase Assembly; Crankshaft Inspection - TGB EST 1000 Service Manual

5-3. ENGINE BOTTOM END
NOTE: Mark position of oil bore on crankcase
half. Align mark on plain bearing
remover/installer with mark on crankcase half.
NOTE: Wrong oil bore position will stop oil
supply to plain bearings and will cause engine
damage.
NOTICE: The partition of the plain bearing in
crankcase half ACG side must be positioned
near to oil bore in clockwise direction.
NOTICE: The partition of the plain bearing in
crankcase half CVT side must be positioned
near to oil bore in counterclockwise direction.

Crankcase Assembly

▪ The assembly of crankcase is essentially the
reverse of removal procedure. However, pay
attention to the following details.
▪ Clean oil passages and make sure they are
not clogged.
▪ Clean all metal components in a solvent.
▪ Install a new crankcase gasket.
▪ Oil the plain bearings before mounting the
crankshaft.
NOTICE: Correctly reinstall crankshaft.
▪ Properly reinstall engine oil strainer and bolts.
▪ Reinstall water pump shafts/gears.
▪ Tightening sequence for bolts on crankcase is
as per following illustration.

Crankshaft Inspection

NOTE: Check each bearing journal of
crankshaft for scoring, scuffing, cracks or other
signs of wear.
NOTE: Replace crankshaft if the gears are worn
or otherwise damaged..
NOTICE: Components out of specifications
always have to be replaced. If this is not
observed, severe damage may be caused
to the engine.
5-3-12