Checking Individual Parts; Checking The Central Crankcases; Checking The Left Crankcase; Checking The Right Crankcase - SHERCO 2015 450 SEF-R Workshop Manual

Checking individual parts

❱❘ Controlling the central crankcases
• Check the general condition of the central cran-
kcases for any possible damage or crack.
Change the defective or worn crankcase set if
necessary.
• Check the condition of the bearings. Change
them if necessary.
❱❘ Left crankcase
• The crankshaft bearings (1), primary shaft (2)
and secondary shaft (3) of the gearbox are held by
some screws and/or plates.
• Balancer shaft bearing (4).
• Check the bearings, replace them if necessary.
• Remove the bearings.
• Check that their housing is clean and install the
new bearings, hot crankcase at about 70 °C.
• Apply blue thread lock on the bearings of the
retaining screws and tighten them to 5 Nm.
• Check that the top engine oil nozzle (5) and BV
(6) is not clogged or damaged.
WARNING
the piston nozzles (7) are indexed and cannot be
replaced. If damaged, replace the carters.
❱❘ Right crankcase
• The crankshaft bearings (1), primary shaft (2)
and secondary shaft (3) and selection drum (4) are
secured by screws and/or plates.
• Balancer shaft bearing (5).
• Check the bearings, replace them if necessary.
• Remove the bearings.
• Check that their housing is clean and reinstall
the new bearings, hot crankcase at about 70 °C.
• Apply blue thread lock on the bearings of the
retaining screws and tighten them to 5 Nm.
• Check that the oil nozzle (6) and (7) (external
side) is not clogged.
5
6
2
3
5
1
7
7
4
1
6
2
3
4
21