Rotax 912-UL Repair Manual page 22

6.2.L) Measuring of crankcase
For taking dimensions of the bearings, join
crankcase halves with crankshaft bearing
halves fitted and tighten screws as specified
(M8 to 25 Nmlz2l in.lb., M6 to 10 Nm/88
in.lb.). Take dimension of crankshaft and
camshaft bearings and recordthem in dimen-
sion sheet 2 (chapter'11, dim. sheets). After
measuring, disassemble crankase again.
I ATTENTION: Tighten all4 screws at the
centre bearing, otherwise
readings will be incorrect!
Readings of the 3 main bearings:
Dimension
without bcaring halves
with bcaring halves
Dimensions
camshaft bcaring
6.2.2) Thrust ring halves:
Dimensions
thickness of ring halves
Readings of the camshaft bearings:
ncw mm
48,13 + 48,14
44,47 + 44,50
new mm
30,00 + 30,O2
wear limit mm (in.)
48,17 (l,g96)
4,56 (rJ54)
l\
(in)
( I,895)
(1,751 + 1,752)
(in.)
( l , l 8 l + I , 1 8 2 )
wear limit mm (in.)
30,10 (1,185)
Visual check of the sliding face and readings of the thickness of the ring halves.
new mm
(inJ
2,37 + 2,36 (0,091 + 0,093)
wear limit mm (in)
2,25 (0,099)
Rm::1912:UL