Maintenance
9223−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
5/ 22
⇒ In order to align toothed belt 9 on its running track, turn the crankshaft one to
two revolutions with the turning gear.
⇒ Recheck belt tension according to Fig. ’G’ and ’H’ as well as marks ’MK’. Re-
peat tensioning procedure if belt slackened after crankshaft has been turned
or if marks ’MK’ are not matching.
⇒ Adjust and bend the long lugs of locking plates 17 according to Fig. ’G’.
⇒ Tighten all screws 15 and 15a with a torque of 16 Nm and lock them.
Attention! Always use new locking plates, bending them once only!
3.3 Outer shaft encoder
Fitting the outer shaft encoder 13 is carried out analo
gously to the inner one.
Attention! When fitting shaft encoders, toothed belt
or crank angle sensor drive (section 7) always pa
attention to the following points:
D Crankshaft at T.D.C. of Cyl. No.1.
D Bore for locating pin 58 of the crank angle senso
drive pointing downwards as shown in Fig. ’I’.
D Mark ’MK’ (T.D.C. 1) of gear wheel 18 pointing up
wards as shown in Fig. ’G’ and all other mark
aligned according to Fig. ’I’.
008.733/01
008.732/00
008.731/00
T.D.C. 1
008.731/00
G
I
9
I
18 15a
19
17
H
TOOTHED BELT
TENSIONED
TOOTHED BELT
LOOSE
MK
15 17
15a
I
MK
58
16
T.D.C. 1
SK
2011
rank Angle Sensor Unit: Dismantling, Assembling and Adjusting
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