Rotax 912-UL Repair Manual page 20

6) Inspection and judgement of components
and units:
Evaluation of wear limits, crearances
and torerances
6.1) Crankshaft
As preventive measure against fouling of the
con-rod bearings, never wash a crankshaft,
but
just let drip off oil and wipe with
a non_fraying rag.
Zyt.1
Zyl.2
Dimensions
joumal of the 3 main bearings O and
O
joumal arpowcr-rakcoff end (pTO) g
joumal armagnero side (MS) 0
main bcaring - radial clcarance
crank pin - radial clearance
crankshaft - radial clcarance, magneto sidc
crankshaft - radial clearance, pTO side
crankshaft - axial clearance
crankshaft - out of round, pTO and MS
Zyl.3
Zyl.4
ncw mm
4445 + 44,46
27,99 +28,ffi
31,99 +32,6
0,A25+ 0,06
0,015+ 0,050
O,U2 + 0,04
O,U2 + 0,04
0,08 + 0,32
0,04
(in)
(
+ 1,750)
(
+ rJA2)
(
+ t,ZSg)
(0,001+ 0,002)
(0,001+ 0,002)
(0,00I + 0,002)
(0,001+ O,W2)
(0,003 + 0,013)
(
o,ooz;
wear limit mm (in.)
4,40 (1,749)
27,95 (1,1cf/)
31,95 (1258)
max. 0,12 (0,005)
max. 0,12 (0,m5)
max. 0,12 (0,005)
max. 0,12 (0,m5)
max. 0,50 (0,020)
max. 0,06 (0,002)