Beta RR 4T-250, Workshop Manual

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31
6 - Motore
Release 00 Date 02/2005
The oil pump casing should show no signs of scoring or seizu-
re.
Blow all the oil channels with compressed air and ensure that
they are clear.
Check that the two steady pins 1 are firmly seated. If necessary
lock with Loctite 243.
Right-hand crankcase half
Remove all the oil seals and heat the crankcase half in an oven
to a temperature of approximately 150° C.
Crankshaft roller bearing 2
Using a suitable drift, push in the bearing from the outside. Fit
the new bearing, pushing it from the inside to its abutting end.
Driving shaft ball bearing 3
Using a suitable drift, push in the bearing from the outside. Fit
the new bearing, pushing it from the inside to its abutting end.
NOTE: Driving shaft ball bearing 3 is fastened by a screw. Ap-
ply Loctite 243 to the screw thread and tighten to 5 N·m.
Driven shaft ball bearing 4
Using a suitable drift, push in the bearing from the outside. Fit
the new bearing, pushing it from the inside to its abutting end.
Crankshaft oil seal 5
Insert the new oil seal and push it with is open side facing inward
until it is flush.
Kickstart idler gear support pin 6 . Electric start idler gear support
pin 7 . As a rule, support pins are not subject to wear. Replace-
ment of the support pins should be carefully evaluated, since in
most cases the operation causes damage to the crankcase.